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LAKASA Marketing & Distribution

LAKASA Commitment:

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Content Page

Article Extract 2

LAKASA Biomatic Grease Interceptor 3 – 5

LAKASA Biomatic Liquid Enzyme 6 – 7

LAKASA Auto-Dosing Unit (ADU) 8 – 9

LAKASA Sediment Interceptor 10

LAKASA Floor Sediment Trap 10

Installation for LAKASA Grease and

Sediment Interceptor & Floor Sediment Trap 11

LAKASA Oil Interceptor 12 – 14

LAKASA Neutralization Tank 15

Stainless Steel Grade 16

As product improvement is an ongoing process and in pursuit of excellence, LAKASA reserve the right to change specifications or designs without prior notice.

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“Article Extract”

THE CITY OF NEW YORKDEPARTMENT OF ENVIRONMENTAL PROTECTION

Wastewater Treatment

Preventing Grease Discharges Into SewersGuidelines for New York City Businesses

A thriving business community is vital to New York City and its neighborhoods. A healthy economy benefits every New Yorker. But when businesses disregard sewer use regulations and improperly dispose of grease, fat or oil, sewer lines can become clogged, causing sewage to back up into basements of homes and commercial establishments. When that happens, the entire community suffers.

The New York City Department of Environmental Protection (DEP) is responsible for maintaining the City’s sewage system - 6,000 miles of sewers and 14 wastewater treatment plants that process about 1.3 billion gallons of sewage per day. Sewer back-ups are a major sewer system problem that damages property and affects public health. In some areas, back-ups are frequently caused by grease clogging the local sewers. To address this problem, DEP is helping businesses comply with the City’s sewer use regulations. DEP is educating not only restaurant owners but also operators of nursing homes, fruit and vegetable stands, laundries, and dry cleaners, among others, to keep grease and other materials and chemicals out of the sewer system.

To work effectively, sewer systems need to be properly maintained, from the drain to the treatment plant. If wastes are disposed of correctly, the City’s sewer system can handle them without any problem. Grease is an example of a waste that the sewer system cannot handle, and therefore should not be put down the drain. The City needs businesses and individuals to do their part to maintain the system because repeated repairs are disruptive to residences and businesses alike. Furthermore, proper disposal by commercial establishments is required by law.

SEWER REGULATIONS CONCERNING GREASE

To ensure the proper disposal of animal fats and vegetable oils, and to prevent sewage back-ups, the City requires grease-generating establishments to correctly install, operate and maintain properly sized and designed grease interceptors. These grease interceptors must be routinely cleaned to ensure proper operation.

On November 9, 1998, the City amended the Sewer Use Regulations. These amendments clarify existing requirements and provide for self-certification of grease interceptors by a NYS licensed Professional Engineer or Registered Architect. Self-certification relieves regulated establishments from a lengthy departmental review process.

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LAKASA Biomatic Grease Interceptor

Need for Good Grease

Interceptor System!

Direct discharge of greasy and oily wastewater from restaurants, fast food stores, centralized food courts in commercial and institutional buildings as well as traditional individual shops into the drain lines has significantly increase pollution to server plants, rivers, lakes and other waterways. The increasing difficulties in dealing with these problems are in the form of frequent pipeline and manhole blockages, obnoxious and rancid odors. This calls for a compulsory adoption of effective waste effluent pre-treatment.

LAKASA Biomatic Grease Interceptor is designed to provide an effective, hygienic and environmental friendly solution to grease contamination. LAKASA Biomatic Grease Interceptor is recommended for use in kitchens, restaurants, institutions, and all types of food processing areas, with wastewater containing grease, fats and oil (FOG) and solid starch. LAKASA Biomatic Grease Interceptor is completed with two individual chambers to take care both the solid waste and starch, as well as grease and oil which are frequently exist in kitchen wastewater. The solid waste and starch is filtered out effectively from the sediment trap (first chamber), while the grease and oil is intercepted from the second chamber. The interceptor can be used for manual removal of oil and grease or used in conjunction with LAKASA Biomatic Liquid Enzyme for waste digestion.

Specification of LAKASA Grease Interceptor

The unit is completed with two chambers and with two separate interceptor covers. The first chamber comes with a perforated stainless steel bucket and is able to effectively filter away incoming solid waste and starch. The interceptor cover for first chamber can be easily opened with hinges support for easy maintenance. The second

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Type of Installation


chamber is completed with checker plate aluminium cover; a proper design removable baffle assembly which can effectively control flow velocity and turbulence of incoming wastewater; enzyme dosing connection and deep seal integral trap with rodding access.

How LAKASA Grease Interceptor Functions

Wastewater from kitchen sink, dishwasher that contains air, grease and food particles are flushed and enters the inlet of interceptor at high velocity. Food particles will be trapped and filtered in the stainless steel perforated basket, leaving only greasy water to continue its journey to the next chamber. At the inlet to second chamber, wastewater is immediately directed downward by the main deflecting baffles, at the same time allowing trapped air bubbles to rise to the surface. The baffles will effectively reduce the velocity and turbulence of the incoming liquid. The turbulence of the liquid flow is further reduced when the wastewater passes through the remaining baffles. These baffles are arranged in unique positions to allow effective and efficient separation of grease, fats, and oils from wastewater and rise above the normal established water line of the interceptor.

Sizing & Selection

(i) Check the flowrate of wastewater from each fixture.

(ii) Calculate total flowrate from all the fixtures connected to one particular grease interceptor.

(iii) Identify and assume the simultaneous discharge diversity factor for all the fixtures.

(iv) Multiply the total flowrate with the assumed diversity factor to obtain flowrate during peak activity hour.

(v) Refer to the table for sizes available and select proper interceptor of equivalent or next higher rate.

Selection Tables: Fixture Size

Sinks: Dishwashers:

Sink SizeInterior Measurements

# Bowls Capacityin Gallons

Water Flowrate

GPM

Capacity

In Gallons

Size

GPM

12" x 18" x 6" 1 4.2 7 15-20 15

14" x 16" x 8" 1 5.8 7 20-30 20

18" x 20" x 8" 1 9.4 10 30-50 25

16" x 18" x 8" 2 15.0 15 50-70 35

18" x 20" x 8" 2 18.7 20 70-100 100

20" x 30" x 8" 1 15.5 20

20" x 24" x 12" 1 18.7 20

20" x 22" x 8" 2 23.0 25

20" x 22" x 12" 2 34.0 35

24" x 24" x 12" 2 44.9 50

EXAMPLE OF CALCULATION

Fixtures No. of fixtures

Fixture value(GPM)

Total value(GPM)

Diversity factor

Flow rating(GPM)

Floor drains 2 8 16Double bowl sink (18”x20”x8”)

2 20 40

Hand washing sink (14”x16”x8”)

2 8 16

Dishwasher (50 gallon capacity)

1 35 35

Total 107 75% 80 GPM

The model recommended is LK2100 (100 GPM)

Operation and Maintenance Guide

1. Sediment trap chamber is to be cleaned up on daily basis. However, the frequency of cleaning can be once a few days if the incoming volume is low.

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2. Grease trap chamber is designed to intercept incoming grease and oil. The grease and oil which is trapped in this chamber can be cleaned either

by manual scoop (once a week). In this case, Grease Interceptor shall be maintained in efficient operating condition by periodic removal of the accumulated grease. No such collected grease shall be introduced into any drainage piping, or public or private sewer.

OR by biomatic liquid enzyme, which actually converts grease into water and carbon dioxide. If a

thickening of the contents is noted, with a distinct caking effect across the surface, or an offensive, pungent odour is emitted, then gradually increase the suggested dosage rate to compensate. If the contents appear to remain in a minimal semi-liquid state with little or no odour, this indicates successful degradation of the grease. Whenever tank is cleaned, the initial dosing procedure must be repeated.

3. With the introduction of biomatic enzyme, periodic cleaning for grease is about once every 6 months. For manual cleaning (without using biomatic enzyme), cleaning for grease is about once a week. However, more frequent cleaning is required when there are more activities and/or when incoming grease content is high.

4. Additional aeration system is suggested for larger size grease interceptor. The aeration pump is pre-set to run at the right timing and duration to achieve optimum performance.

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LAKASA Biomatic Grease InterceptorUse in restaurant, food court, cafeteria, school canteen, etc.

Each interceptor carries an unique serial number ONE YEAR WARRANTY ON WELDING JOINTS (LEAKAGE) FOR LAKASA GREASE INTERCEPTOR

Interceptor Material:

Stainless Steel 304: Interceptor body, Perforated bucket, baffles, integral trap, inlet & outlet pipe sleeve.

Aluminium Checker plate:Interceptor Cover.

*Other material is available upon special request

Advantages:

Complete with sediment interceptor. Baffle design to avoid blockage by sediment waste.

Baffle is removable for periodic cleaning. Easy opening cover with hinges support makes

cleaning works much easier. Interceptor cover is checker plate, to avoid slippery

floor. Interceptor cover is gasketted airtight.

Dimensional Data

(All dimension in mm)

ModelFlowrate

(GPM)Flowrate(litre/sec)

Grease capacity

Inlet &

outlet

A(length)

B(width)

C(height)

D E FWeight

(full)

Shallow Range (under the sink installation)

LK2012S 12 0.91 10 kg 50 630 340 300 80 85 215 65kgLK2015S 15 1.14 14 kg 50 690 370 320 90 95 225 80kgLK2020S 20 1.50 18 kg 75 730 400 330 90 95 235 100kg

Standard Range (floor-mounted, suspended or semi/fully recessed installation)

LK2012 12 0.91 10 kg 50 610 290 360 90 100 260 65kgLK2015 15 1.14 14 kg 50 650 310 400 100 110 290 80kgLK2020 20 1.50 18 kg 75 720 330 400 100 110 290 100kgLK2025 25 1.89 23 kg 75 780 360 420 100 110 310 135kgLK2035 35 2.65 32 kg 100 820 440 430 100 110 320 160kgLK2050 50 3.78 46 kg 100 920 490 500 110 130 370 200kgLK2075 75 5.68 68 kg 100 1220 580 530 110 130 400 350kgLK2100 100 7.57 91 kg 100 1220 720 740 150 180 560 700kgLK2150 150 11.35 136 kg 100 1700 760 810 150 180 630 1000kgLK2200 200 15.14 182 kg 150 1820 860 910 180 210 700 1200kgLK2250 250 18.92 227 kg 150 1960 940 1010 180 210 800 1800kgLK2300 300 22.70 273 kg 150 2200 980 1110 180 210 900 2000kgLK2350 350 26.49 318 kg 150 2350 1070 1140 180 210 930 2200kgLK2400 400 30.28 363 kg 150 2440 1180 1140 180 210 930 2500kgLK2450 450 34.05 409 kg 150 2550 1140 1310 180 210 1100 3000kgLK2500 500 37.84 454 kg 150 2650 1240 1410 180 210 1200 4000kg

Sole Agent: LAKASA Marketing & Distribution Tel: 03-6120 6895 Fax: 03-6120 1852

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SIRIM TESTED(Ref. No. 237/16/206)

(Job No. J114/01)

Schematic View

1. Selected microbes produce enzyme

2. Enzymes liquefy organic waste

3. Microbes digest liquefied organic waste

4. After digesting liquefied waste, microbes give off harmless carbon dioxide (CO2) and water (H2O) byproducts

5. Microbes multiply and continue this process until all organic waste is eliminated


LAKASA Biomatic Liquid Enzyme

LAKASA Biomatic Liquid Enzyme is a blend of highly specialized microorganisms (multiple strain) designed specifically to promote rapid degradation of excessive, difficult to digest organic waste. These organic wastes include grease, fats and oils (FOG), detergents, starches, protein, cellulose and hydrocarbons. With the introduction of LAKASA Biomatic Liquid Enzyme, FOG is converted into harmless compounds of CO2 (carbon dioxide) and H2O (water). It is an effective pre-treatment for organic waste to prevent it from passing over to the municipal wastewater system.

Characteristic of LAKASA Biomatic Enzyme Concentrate

LAKASA Biomatic Enzyme is designed for use to enhance the decomposition (degradation) of organic waste compounds in food processing wastewater treatment.

Microorganisms Strains:Bacillus subtilis (3 strains) Bacillus Licheniformis

Bacillus MegateriumBacillus Polymyxa

Bacterial Cultures:Bacillus subtilis (3 strains) Superior producer of protease, amylase,

cellulase and lipase enzyme activity

Bacillus Licheniformis Excellent producer of protease and amylase activity and requires facultative condition for growth

Bacillus Megaterium Excellent producer of protease, lipase and cellulase activity and requires facultative condition for growth

Bacillus Polymyxa Excellent producer of lipase activity and requires facultative condition for growth

Enzymes Protease, Amylase, cellulase, Pectinase, Beta glucanase, xylanase and lipase

Other Ingredients Essential nutrient and amino acid complexes

Benefits(i) Effectively and rapidly reduce/eliminate BOD and COD in

wastewater.(ii) Decomposes and permanently converts organic wastes into

water soluble compounds. (iii) Keeps drain lines flowing smoothly; reduces the amount of

pumpouts.(iv) Non-corrosive: will not damage drain lines & grease interceptor(v) Controls and reduces odors(vi) Contains no polluting phosphates(vii) Non-toxic, Non-pathogenic (non-disease causing)(viii) Environmentally safe & friendly

Biodegradation Process Summary

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Glycerol

FFA

FFA

FFA

FFA

Glycerol

VFAs

CO2

+H2O


Why Biomatic Enzyme is NOT working in some cases

I. Inadequate dosage. II. Inappropriate dosing time – the water temperature might be too high or the enzyme might have been flushed

out before it has enough time to react.III. The grease content might be too high for biological process. In this case, manual cleaning is required once

a month or more frequent if needed.IV. Inadequate oxygen for microbe to perform, additional aeration might be required, especially for large

interceptor.V. Wastewater might be too acidic or contains high chlorine mixture which can kill microbes.

Enzyme Dosage (Actual dosage required might vary according to actual grease content)

Model Daily meals Starter dose(ml)

Monthly dose (litres)

LOW grease

HIGH grease

LK2012 up to 80 90 0.6 1.8LK2015 80 – 150 90 0.6 1.8LK2020 150 – 250 180 1.0 2.7LK2025 250 – 300 180 1.0 2.7LK2035 300 – 400 270 1.5 3.6LK2050 400 – 600 360 1.8 4.5LK2075 600 – 1000 450 2.0 5.4LK2100 1000 – 2000 540 2.0 5.4LK2150 2000 – 3000 900 3.0 9.0LK2200

to LK2500

3000 and above 1080 3.6 10.8

Wastewater from main kitchen always contain high % of grease, whereas those from hand washing sink / basin and secondary centralized Grease Interceptor usually does not have much grease and oil.

During the first few weeks of dosing operation, regular inspection of the internal condition of the interceptor should be conducted to gauge the performance of the dosage. If a thickening of the contents is noted, with a distinct caking effect across the surface, or an offensive, pungent odour is emitted, then gradually increase the suggested dosage rate to compensate. If the contents appear to remain in a minimal semi-liquid state with little or no odour, this indicates successful degradation of the grease. Whenever tank is cleaned, the initial dosing procedure must be repeated.

Health & Safety

The Lakasa biomatic liquid enzyme concentrate is safe in normal use. The biologically active nature of the product may cause skin irritation in some cases. It is essential that rubber gloves are worn at all times.Skin contact Should the concentrate come in contact with skin, wash with plenty of clean water.Eye contact If the concentrate splashes into the eyes or is rubbed in by hand, flush eyes with plenty of

clean running water.Ingestion Avoid ingesting the concentrate but should an accident occur, wash mouth thoroughly with

water. Do not induce vomiting. Drink plenty of water or milk. Seek medical advice immediately after the initial treatment has been given.

This product should be stored, handled and used in accordance with good industrial hygiene practices. The information contained herein is based on the present state of our knowledge and is intended to describe all products from the point of view of health and safety requirements. It should not therefore be construed as guaranteeing specific properties.

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SIRIM LAB TEST

Day Grease & Oil

Day 1 0.5945 gDay 7 0.2280 gDay 14 0.1182 g

Conclusion:

The results clearly showed positive impacts of LAKASA BIOMATIC ENZYME in the degradation of FOG.

For best performance

1. Follow the initial and daily dosing procedures.2. Optimum dosing time is 1 hour after kitchen closes.3. Do not discharge very hot water into the interceptor

immediately before or immediately after dosing.4. Do not discharge chlorine, strong caustics,

concentrated disinfectants, bleach or sanitizers into the interceptor.

5. Do not deliberately discharge cooking oil or grease

Characteristics

Appearance : LiquidOdour : Pleasantly

perfumedpH : 8.2 – 8.8Effective pH range : 5.5 – 9.0Effective temperature: 5 – 50oCStability : 2 years


LAKASA Auto-Dosing Unit (ADU)

LAKASA Auto-Dosing Unit (ADU) is highly recommended to install in conjunction with grease interceptor. It will ensure the dosing of biomatic liquid enzyme at regular intervals consistently. It enhances the efficiency of the

operation and significantly reducing the build-up of grease and frequency of cleaning.

Specification of Auto-Dosing Unit

The unit is a temporized dosing system, activated by a programmable digital clock. It comes together with a peristaltic pump, 2.5 m electric wiring and 4.0m (6mm Ø) flexible polythene enzyme supply tube.

The advantages of LAKASA Auto-Dosing Unit

1. There is a digital timer to control setting for the dosage and timing of dosing the biomatic enzyme. The reliability and accuracy for the timing and dosage setting is important and critical, because this will ensure the optimum performance of the enzyme and to avoid the wastage of enzyme.

2. The setting is digital type and is user-friendly. Easy and fast to learn and understand. Do not require any specially-trained technician to come and adjust the setting.

3. There is a Back-up battery for the setting in case of power failure. The setting will still be valid and when the power supply is resumed. The auto-dosing system will continue to run as normal and do not have to re-set again. This is another important point to ensure the proper running of the Biomatic Grease Interceptor System!

4. Auto-Dosing Unit is usually installed at the wet area (Kitchen). The casing of LAKASA Auto-Dosing Unit is of standard IP56 - Waterproof. This is to avoid breakdown caused from water to the electronic component and motor.

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Cabinet Hanging (lockable) Panel

Material: Stainless Steel 304

Technical Characteristics

Power supply 230 V 13 amp fuse Single phased 3 pin plug

Power consumption 5 WTimer Digital clockADU dimension 150 x 190 x 110 mm


5. The whole unit is fully imported from an established manufacturer from Europe. From the past record, there is seldom any breakdown complaint. This proves the reliability and quality of LAKASA Auto-Dosing Unit.

Installation

The LAKASA ADU is located in close proximity to the grease interceptor. A conduit pipe (>7mm Ø) for the enzyme supply tube is recommended to link the auto-doser to the grease interceptor. The recommended distance is not more than 5 meters for effective transmission of enzyme from the source to the destination.

Operating Instruction for ADU

I. Connect the ADU to a 13 amp power point.II. Set the current time at the digital clock.III. Set the dosing ‘ON’ time (2 hours after the

kitchen is closed) and the dosing ‘OFF’ time for a correct dosing duration according to recommended enzyme dosage.

IV. Run manual dosing with the initial dosage and to ensure the ADU is running properly.

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Control panel and Digital clock setting

I = manual operated dosing Auto = Auto operated dosingO = Off = set timeRun = normal run

= program

= choose program for dosing ON and OFF 1 … 7 = set dosing day (Mon to Sun)h = hour m = minute R = reset

LAKASA Auto-Dosing Unit (ADU) is installed close proximity to Grease Interceptor

The Setting of LAKASA Auto-Dosing Unit (ADU)

(1) Ensure button is pointing to < Auto > in between and < O >.(2) Set Today / Current Date & Time.

(a) Push the button from <Run> mode to the < > mode.(b) Press <1…7> button to point to the current day. For instance,

pressing arrow until it’s pointed to number 3 which means Wednesday.

(c) Press <h> button to show current hour. For instance, pressing 11 means 11.00am and pressing 22 means 10.00pm.

(d) Press <m> button to show current minute. For instance pressing 45 means 45 minutes.

(e) Once the date & time is confirmed, push the button back to the <Run> mode.

(3) Set Everyday Auto-Dosing Operation Start Time.(a) Push the button from <Run> mode to the mode.

P=1appears on screen. (b) Press <1…7> button several times until 7 arrows appear at the bottom of the 7 numbers from 1 to 7.

This implies operation day is from Monday to Sunday. (c) Press <h> and <m> to set the dosing start time. For instance, 00:00 means ADU will start running at

0.00am.(4) Set Everyday Auto-Dosing Duration Before Operation Stop.

(a) Press button for one time. P=2 appears on screen.(b) Press <1…7> button several times until 7 arrows appear at the bottom of the 7 numbers from 1 to 7 (i.e. Monday to Sunday). (c) Press <h> and <m> to set the dosing stop time. For instance, 00:20 means ADU will stop running at

0.20am.(d) The ADU is running at 7ml / minute. (e) Push the button from mode back to the <Run> mode.

(5) Once steps 1 to 4 are completed, the ADU is in Auto mode and is ready for operation. (6) To manually run the ADU, push the button from <Auto> to mode.(7) To switch off the ADU, push the button from <Auto> to < O > mode, which means OFF.

Note : <R> button will clear/ reset all the settings which has been done before.

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LAKASA Sediment Interceptor

LAKASA Sediment Interceptor is completed with a perforated bucket and able to act as an effective strainer to avoid drain lines clogging by foreign solid particles. The perforated bucket should be cleaned on daily basis or as frequent as possible to avoid overflow of solid waste and interrupting free flow of wastewater in the drain lines.

Dimensional Data Model Pipe Size

(mm)A

(mm)B

(mm)C in(mm)

C out(mm)

D in(mm)

D out(mm)

E(mm)

LKS 9434 75 400 400 100 200 200 100 300LKS 9545 100 500 500 110 250 290 150 500LKS 9656 100 600 600 120 300 380 200 600LKS 9767 100 700 700 120 300 480 300 700LKS 9878 100 800 800 130 350 670 350 800

Various dimensions is available upon request or to suit site requirement

LAKASA Floor Sediment Trap

Advantage: 1) Prevent the pipeline being clogged with solid waste. 2) Stainless steel material to avoid rusty and corrosion over long period. 3) Perforated sediment bucket is removable to make cleaning work easy. 4) Type B c/w deep seal integral trap prevent outside air entering into building.

Material: Stainless Steel 304Dimensional Data

MODEL INLET (mm)

OUTLET (mm)

A(mm)

B(mm)

C(mm)

D(mm)

E(mm)

LFS 4150 - 50 150 150 150 - -LFS 5150 50 75 150 150 300 180 120LFS 5200 50 75 200 200 350 200 150LFS 5250 75 100 250 250 400 220 180LFS 5300 75 100 300 300 500 250 250LFS 5400 75 100 400 400 500 250 250

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Advantages

1. Easily open cover to ease cleaning work.

2. Prevent the pipeline being clogged with solid waste.

3. Stainless steel interceptor material to avoid rusty and corrosion over long period.

4. Deep integral trap to avoid smell in manhole from entering the building thru pipeline.

LFS 4150LFS 5series

Type A

Type B


Installation for LAKASA Grease and Sediment Interceptor & Floor Sediment Trap

Testing & Commissioning Method Statement Grease Interceptor 1. Place at a firm & balance concrete base. 2. Inlet & outlet is connected accordingly and properly. 3. Interceptor is to be filled up with clean water until it reaches static water level.

Auto-Dosing Unit (ADU)1. To mount the ADU to wall with a lockable cabinet.2. To connect ADU to a 13 Amp power point. 3. To set current time and dosing time (set 1 hour after kitchen close). 4. To set the dosing duration according to recommended dosage. The unit is running at a speed of 30 mL/min.5. To connect a short flexible hose to enzyme bottle. Use steel weight and strainer provided to ensure the hose

reaches the bottom of the bottle. 6. To connect a long hose (with conduit pipe) to the grease interceptor. To use the connector provided to join

the connection. 7. To switch to manual dose to ensure pump head is rotating and enzyme is sucked up and delivered to

interceptor. 8. To switch to “Auto” and the ADU will run automatically according to the preset time.

Biomatic Enzyme1. Avoid direct sunlight and should be kept inside the ADU cabinet. 2. To top up enzyme periodically.

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Cross Section

Detail of Pre-Casted Sump Plan View

LAKASA BIomatic Grease Interceptor System Installation: Suspended with hanger support Model: LK2035 (35 GPM)

LAKASA Biomatic Grease Interceptor (Typical Installation: Suspended Type)

BEAM OPENING REQ.

LAKASA Oil Interceptor

LAKASA Oil Interceptor is required wherever lubricating oil, cutting oil, kerosene, gasoline, naptha, paraffin, trisod phosphate and numerous other light density and volatile liquids are present in the drainage. In commercial establishments such as service stations, garages, auto-repair shops, dry cleaners, laundries industrial plants or process industries having machine shops, metal treating process rooms, chemical process or mixing rooms, etc, there is always the problem of flammable or volatile liquids entering the drainage system which can contaminate the sewer line and cause a serious fire or explosive condition. The discharge of oily wastewater, which consists of high degree of BOD (Biological Oxygen Demand), COD (Chemical Oxygen Demand), FOG (Fat, oil and grease), and other organic wastes into natural waterways has disastrous impacts on aquatic life and the environments.

LAKASA Oil Interceptor is a preliminary treatment for oily (hydrocarbon) wastewater discharged from sources such as service & repair workshop, carwash bays etc. The effluent from the interceptor should be channeled to sewer line for further process and treatment.

LAKASA Oil Interceptor is designed to allow introduction of any liquid types for separation as long as there is sufficient specific gravity differential to permit gravitational separation. It is designed for intermittent and variable flows of water, oil or any combination of non-emulsified oil/water mixtures. LAKASA Oil Interceptor can be installed at drain lines in areas like parking garages, petrol stations, hangars, machine shops, and also industrial plants where oil, sediment and other volatile liquid are encountered. It prevents oil and sediment in wastewater from entering discharge lines and protect against water pollution. The design allows intercepted oil to be automatically drawn-off for storage in a continuous operation. Sediment should be removed from sediment bucket at regular intervals. To eliminate pressure build-up inside the interceptor, a vent connection on side of the body allows the venting of interceptor.

Coalescing Plate Separators - Taking advantage of the buoyancy of oil droplets in water, coalescing plates perform oil/water separation. The system consists of many corrugated plates stacked one above the other, forming a set of narrow channels through which the oily water must flow. As the water flows through the plates the oil droplets rise and meet the underside of the plates where they are captured and eventually as more droplets are captured a film forms which eventually forms larger drops. The large oil droplets rise to the surface of the separator through holes provided for that purpose as a layer to be removed manually or automatically.

Coalescing plates offer high efficiency and low operating and maintenance costs because there are no moving parts and no replacement parts are needed or spent absorbents generated.

Operation and Maintenance Guide

The oil shall be skimmed and dirt, sand and sludges shall be removed on a quarterly basis at a minimum. Oil shall be handled as a hazardous waste stored and sent to a used oil recycler. If the oil is too thin to pump or skim, oil absorbent pads or pillows can be used to remove the oil. These can be sent for disposal or recycling, or if oil can be removed from them they can be reused (oil collected and sent for recycling). The first quarter’s sludge/dirt shall be sent for waste characterization to determine if it can be disposed off as ordinary waste or hazardous waste. If hazardous, sludge shall be stored in labeled drums and picked up by a licensed hauler. If non-hazardous, sludge shall be disposed off to a landfill, and is not to be deposited on-site.

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Preliminary treatment for oily wastewater 99% Oil Removal Quality of effluent on average < 60 ppm of oil; < 80 ppm of BOD5.


1. Manual draw off of oil. A routine inspection of oil interceptors should be undertaken at least once every 3 months by the inspection technician. Using a dipstick, the amount of accumulated oil and solids shall be measured to determine if a clean-out is required. Servicing and clean-out of oil to a separate storage tank pending for proper disposal whenever is necessary.

2. Automatic draw off of oil. During the first 2 weeks of operation, check the oil storage tank for oil build up to determine the frequency it needs to be emptied. If water is found entering the draw-off sleeve into the oil storage tank during normal working condition, adjust the draw off level upwards from 2 mm to 5 mm.

L A K A S A O i l I n t e r c e p t o r U s e d a t g a r a g e , c a r w a s h a r e a , s e r v i c e & r e p a i r w o r k s h o p e t c .

Each interceptor carries a unique serial number ONE YEAR WARRANTY ON WELDING JOINTS (LEAKAGE) FOR LAKASA OIL INTERCEPTOR

Dimensional Data (All dimension in mm)Model Flowrate

(GPM)Flowrate

(litre / sec)

Inlet &outletpipe

A(length)

B(width)

C(height)

E F G H Weight(full)(kg)

LK3015A 15 1.14 50 600 450 430 110 320 200 150 120LK3020A 20 1.50 75 780 470 450 110 340 220 200 150LK3025A 25 1.89 75 800 500 480 110 370 250 250 200LK3035A 35 2.65 100 880 550 500 110 390 270 300 240LK3050A 50 3.78 100 930 600 550 130 420 300 350 300LK3075A 75 5.68 100 1200 800 620 130 490 370 400 550LK3100A 100 7.57 100 1450 900 750 180 570 450 450 1000LK3150A 150 11.35 100 1650 1000 850 180 670 550 500 1500LK3200A 200 15.14 150 1850 1100 1000 210 790 670 550 1800LK3250A 250 18.92 150 1970 1200 1200 210 990 870 600 2700LK3300A 300 22.70 150 2250 1300 1300 210 1090 970 650 3000LK3350A 350 26.49 150 2360 1350 1400 210 1190 1070 700 3300LK3400A 400 30.28 150 2460 1400 1500 210 1290 1170 750 3800LK3450A 450 34.05 150 2560 1550 1700 210 1490 1370 800 4500LK3500A 500 37.84 150 2660 1800 1850 210 1640 1520 850 6000

Sole Agent: LAKASA Marketing & Distribution Tel: 03-6120 6895 Fax: 03-6120 1852

Interceptor Materials:Stainless Steel 304:

Interceptor Body, Perforated Bucket, Integral Trap, Inlet/Outlet Pipe Sleeve, Coalescer Pack.

Aluminium Checker Plate: Interceptor Cover.

Advantages: 1. Complete with sludge interceptor.2. Easy opening cover with hinges support makes

cleaning works much easier.3. Coalescer pack is removable for periodic cleaning.4. Interceptor cover is checker plate, to avoid slippery

floor.

15

Schematic View

SIRIM TESTED(Ref. No. 237/16/206)

(Job No. J197/01)


Note: Alternative in interceptor material is available upon special request.

5. Complete with oil draw-off, to channel oil into a separate container for proper disposal

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Installation

1. Place at a firm & balance concrete base. 2. Inlet & outlet is connected accordingly and properly. 3. Interceptor is to be filled up with clean water until it reaches static water level. 4. Connect a ventilation pipe to the interceptor. This is to eliminate pressure build-up inside the interceptor. 5. For automatic oil draw off by gravity flow, connect the interceptor to an oil storage tank for receiving and

storing oil pending for proper disposal. For manual draw off of oil, seal up the connection. 6. The LAKASA Oil Interceptor is ready for operation.

Specification for LAKASA Oil Interceptor

The unit is completed with a sludge trap chamber and an oil trap chamber. Sludge trap chamber is completed with a separate cover with hinges support for easy maintenance. A perforated stainless steel bucket is to filter and collects chips, particles and other sediment (stone, sand etc), which are frequently present in industrial wastewater. Oil trap chamber is completed with non-skid aluminium cover(s) and Lamellar honeycomb cell (coalescer pack) to promote coalescence of hydrocarbons with its large active surface. It is also completed with a deep seal integral trap and an adjustable oil draw-off sleeve, which will trap and channel the floating oil to a separate oil storage tank pending for proper disposal.

Important Notes to follow in order to generate good effluent:

1. Sizing of interceptor meets the requirement. Water flow rates are within the specification. Adequate water retention time will ensure proper separation of oil/ water mixture.

2. Rainwater and other runoff shall not be allowed to enter the interceptor. For outdoor washing either a canopy is required and the wash pad shall be slopped or bermed to keep runoff from entering. In some cases engineered, automatic rainwater diversion system will be allowed. All waste shall enter through the inlet pipe. Discharge of other wastes or wastewater shall not be made through accesses openings.

3. Perforated bucket at sludge chamber should be inspected and cleaned on a regular basis. The amount of debris such as sand, gravel, dirt, leaves, grass cuttings, etc., permitted to enter the system must be minimized. Automotive and truck engine crankcase oil should not be drained into the system. Sludge and deposits present in the oil will significantly reduce the effectiveness of the interceptor.

4. Hydrocarbons entering the separator will be in a free non-emulsified state and capable of being separated from water by gravity separation.

5. Detergent will emulsified the oil and allow it to enter the sanitary sewer system because detergents have a definite affinity for hydrocarbons. Wash water from truck washing racks must be routed directly to a sanitary sewer or treated with special equipment.

6. It is advisable to install a flowrate controller at the upstream of the unit to ensure no accidental discharge of oil during periods of excessive wastewater flow.

LAKASA Oil Interceptor is preliminary treatment for oily wastewater.

Thus the effluent is to channel to sewer for further process.

Sizing of LAKASA Oil Interceptor

In order to work properly the amount of wastewater flowing into the interceptor needs to be calculated. An estimate of the flow of water used in the washing process, and total volume generated each day shall be made. The maximum number of wash jobs per day should be used. Estimate peak wastewater flowrate and select the interceptor model with flow rating equal to peak flowrate or the next higher rate.

Covered Area Peak flowrate Total nos. of hose outlet, equipments etc. that continuous discharging to drain line at a particular

timeExample A carwash bay, with total 3 water hoses are used for car washing during peak washing session.

Each hose power is about 15 GPM (example). Thus the estimated peak water flow is 15 GPM x 3 = 45 GPM

Area Exposure to Rainfall (Open Area)

Calculation of flowrate Total area (length x width in meter) x rainfall (mm/sec) Example Length 30m, width 15m, rainfall 75mm/hr

Calculation = 30 x 15 x 75 ÷ 3600 = 9.375 liter/second

Sizing of Oil Storage Tank

1. Estimate the volume of oil into the interceptor2. Frequency of maintenance routine (once a month, twice a month, etc)3. Calculate the tank size required to cater for the total accumulated oil during the period. To allocate tank size 30% bigger to

meet contingency.

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LAKASA Neutralization Tank

Dimension Data Model Ave.

Continuous Flowrate

(litres/min)

No. of Sink/ Tab

Capacity(litres)

Inlet & Outlet (mm)

A(mm)

B(mm)

C(mm)

D(mm)

E(mm)

F(mm)

G(mm)

LN050 10 1~10 50 75 500 380 380 100 280 110 270LN085 17 1~20 85 75 650 520 400 100 300 110 290LN125 25 21~30 125 75 720 540 440 100 340 120 320LN150 30 31~40 150 75 800 580 470 100 370 120 350LN200 40 41~50 200 100 870 610 510 110 400 130 380

LAKASA Neutralization Tank is also called Dilution Tank, designed to receive, dilute and neutralize corrosive and harmful chemical wastes before allowing such materials to be discharged into the pubic sewers or the environment, is suitable for centralized installation for neutralizing and dilution of laboratory acids and chemicals.

Neutralization of corrosive, toxic and flammable wastes is necessary to the environment and piping systems, even when quantities and concentrations are small. Such wastes can cause physical damage to a building's piping or outside sewer systems and, if effluent is being discharged to the environment (such as rivers and lakes), severe damage can result to wildlife and water sources.

Neutralization is the process whereby acids and alkalis are rendered harmless. The degree of neutralization can be measured by a system known as pH (positive Hydronium ions). The degree of measurement is a pH number of 7, which is neutral. Acids range from 0 to 6.99. Alkalis range from 7.01 to 14. The smaller the number, the higher the content of acidic waste. The higher the pH number, the higher the alkaline waste.

LAKASA Neutralization Tank is recommended for preliminary treatment for acidic wastewater. Therefore the effluent should be channeled to nearest sewer for further process.

Acid neutralization tanks have been commonly installed at the discharge site from many college and university laboratory buildings. In many cases, they are required by local municipalities, and in other cases, considered good practice for basic acid neutralization. Within the confines of these tanks is limestone, which can reduce the pH of small quantities of acids.

LAKASA Neutralization Tank is designed for intermittent flow of acidic wastewater which attempts to achieve a retention time of > 5 minutes, as such the interaction and dilution to be taken place between the acidic wastewater and the calcium carbonate base neutralizing agent.

1. Material: Stainless Steel 316 Body; Checker Plate Aluminium Cover.

2. Maintenance: The limestone supplied are 1-3" in diameter and have a calcium carbonate content certified to be in excess of 90%. A maintenance schedule should be established to observe and maintain proper limestone levels in the tank. Limestone replacement should be performed at regular intervals. Typically, once every one to three months is sufficient, however, these intervals can be increased or decreased based upon application needs and performance. Factors affecting limestone replacement are waste flow rated and chemical composition as well as operating temperatures. Solids in the waste stream can plug the tank and should be avoided.

3. Installation: Underground installation.

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Stainless Steel Grade

What is the difference between type 304 and type 316 Stainless Steel

TYPE 304

Type 304, with its chromium-nickel content and low carbon, is the most versatile and widely used of the austenitic stainless steels. Type 304 alloys are all modifications of the 18 percent chromium, 8 percent nickel austenitic alloy. Applications for this group of alloys are varied and all posess somewhat similar characteristics in resistance to oxidation, corrosion, and durability. All provide ease of fabrication and cleaning, prevention of product contamination and offer a variety of finishes and appearances.

General Properties Type 304Type 304 stainless steels can meet a wide variety of physical requirements, making them excellent materials for applications including auto molding and trim, wheel covers, kitchen equipment, hose clamps, springs, truck bodies, exhaust manifolds, stainless flatware, storage tanks, pressure vessels and piping.

Typical Analysis Type 304Represented by ASTM-A240 and ASME SA240.

Elements by Percentage by Weight - Maximum Unless Range is Specified.C=.08 / Mn=2.00 / P=.045 / S=.030 / Si=1.00 / Cr=18.00-20.00 / Ni=8.00-12.00 / N=.10

Type 304 Resistance To Corrosion The 18 percent chromium, 8 percent nickel, provides good resistance to moderately acidic or caustic solutions. Type 304 may be considered to perform similarly in most non-severe applications. A notable exception is in the case of welding. Low carbon (304L) is the recommended alloy and provides increased resistance to intergranular corrosion.

Mechanical Properties Of Type 304 At Room TemperatureTypical Mechanical Properties required for annealed material covered by ASTM A240.

Yield Strength .2% offset=30,000 / Ultimate Tensile Strength=80,000 / Elongation=50% Hardness R =90 max.

TYPE 316

Type 316 is an austenitic chromium-nickel stainless and heat-resisting steel with superior corrosion resistance as compared to other chromium-nickel steels when exposed to many types of chemical corrodents such as sea water, brine solutions, and the like.

General Properties Type 316Type 316 alloy is a molybdenum bearing stainless steel. It has a greater resistance to chemical attack than the 304 family. Similarly, Type 316 is durable, easy to fabricate, clean, weld and finish.

Typical Analysis Type 316Represented by ASTM-A240 and ASME SA240

C=.08 / Mn=2.00 / P=.04 / S=.03 / Si=1.00 / Cr=16.00-18.00 / Ni=10.00-14.00 / Mo=2.00-3.00

Resistance To Corrosion Type 316The addition of 2% molybdenum makes 316 considerably more resistant to corrosion and oxidation than the 304 family of alloys.

Mechanical Properties Of Type 316 At Room TemperatureTypical Mechanical Properties required for annealed material covered by ASTM A240.

Yield Strength .2% offset=30,000 / Ultimate Tensile Strength=80,000 / Elongation=50%Hardness R =90 max.

Type 316 is considerably more resistant to solutions of sulfuric acid, chlorides, bromides, iodides and fatty acids at high temperature. In the manufacture of certain pharmaceuticals, stainless steels containing molybdenum are required in order to avoid excessive metallic contamination.

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