WATER TREATMENT TECHNOLOGY FOR INDUSTRIAL, COMMERCIAL & ENVIRONMENTAL APPLICATIONS

OCTOBER 2013 - WATER TREATMENT NEWSLETTER

Optimize Polymer Usage for Belt Filter Press OperationBelt Filter Presses are commonly found in many industrial and municipal applications requiring sludge dewatering. Petroleum refineries, paper mills, food processing plants, and municipal waste treatment facilities often use belt presses in their waste treatment processes. Polymers are used as filter aids to release the water from the sludge matrix. A useful test to optimize polymer selection and dosage determination is the “Free Gravity Drainage Test”. The test method is described and an example graph of test results is shown at our websites. CLICK HERE.

Kansas Water Techkansaswatertech.com

FOR MORE INFO:

Remediation Services Co.remediation-services.com

Cooling Tower Flowrates

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“The Emperor has no Clothes” or “What happended to my Cooling Tower Blowdown? A 500 MW power plant was having problems with their condenser cooling system. Troubleshooting the problem began with monitoring the cooling tower blowdown flowrate. Read the rest of the story at our website. Typical cooling tower flowrates are shown in the schematic of a 500 MW power plant. CLICK HERE.

OCTOBER 2013 - WATER TREATMENT NEWSLETTER

OSHA Requires Training on the new Hazcom StandardOSHA requires training on the new GHS (Globally Harmonized Standard) by December 2013. Manufacters and users of chemical products are required to provide this information to their employees. The standard has changed the formatting of the MSDS (now called SDS or Safety Data Sheets). Labels for chemical products have also changed significantly.

OSHA claims that workers now not only have the “Right to Know” but also the “Right to Understand” and this new standard is a philosophical change to the Hazcom standard.

KWT and RSC have training programs available with videos for those who use or may use our water treatment chemical products. An example of the video content of the training is included in the following link.

http://www.marcomltd.com/products/viewdemo.php?shortpath=mp4/ghs_sds_ind_en.mp4

The training with accompanying videos include the following:

1. Introduction to GHS

2. GHS Safety Data Sheets

3. GHS Container Labeling

4. Safe Handling of Industrial and Commercial Water Treatment Chemicals

Boiler Systems – The Cost of DepositsIt is well known that boiler deposits result in poor boiler e�ciency. It is also possible that deposition can cause boiler tube failure and boiler outages. We have published a useful graph showing boiler e�ciency loss for some common types of boiler deposits. Also the Department of Energy has published additional information about fuel losses with di�erent deposit compositions and thickness. Actual fuel loss will depend on the composition of the deposit and the design of the boiler. Most boilers recover heat in preheaters, economizers and other heat recovery systems. The two documents showing fuel losses from the University of Illinois and the US Dept of Energy are found at our websites. CLICK HERE.

CLICK HERE

Fuel Cost:

KWT has successfully

treated boilers in many commercial

and industrial facilities.

Kansas Water Techkansaswatertech.com

FOR MORE INFO:

Remediation Services Co.remediation-services.com

Kansas Water Technologies

provides advanced

mechanical and chemical water

treatments designed to meet

our customers' requirements.

October 2013 - WATER TREATMENT NEWSLETTER

RO Biocide ApplicationsRO systems which are susceptiple to microbiological fouling are common. Many biocidal approaches have been researched. Chlorination, chloramination, peracetic acid, peroxide, chlorine dioxide and other biocidal products have been applied. Each of these have products have their advantages and disadvantages and limitations in membrane separation technology. Each of the above are oxidizing biocidal products.

A few non-oxidizing biocides have also been applied successfully to prevent and/or control biofilm and biofouling of polyamide membranes. The two most commonly found nonoxidizing biocides in RO system operation are isothiazolin and dibromo nitrilo proprionamide (DBNPA) . Avista markets these products as IS-2 and DB-20. Their use in RO applications are quite di�erent due to their biocidal activity. For example, IS-2 is a relative slow acting biocide so it use is typical for low concentration continuous feed. DB-20 on the other hand is a quick acting biocide which is most commonly used for “shot treatment” and/or cleanup. Continuous treatment levels for IS-2 as low as 5 ppm have been e�ective. Treatment levels for shot feeding DB-20 at the levels as low as 50 ppm for 30 minutes have been e�ective. Note that these feedrates are based on feedwater flows and the biocidal concentration throughout the systems is primarily determined by recovery rates. Actual feedrates will vary depending on many factors including:

1. Biocide demand

2. Contact time and biocide concentration

3. Interference with other dissolved substances

4. pH and temperature

5. Types of organisms present

6. Presence or absence of biofilms