Download - Final Year Project Progress 02
Page 1 of 24
Supervised by:Dr. Ruwan Gallage
Dr. SrimalMr. T. Ranjan
DOMESTIC WATER PURIFIER
Group No 17
Wickramarathne G.T (EG/2012/2111)Thiviyanesan K. (EG/2012/2098)Thajivan S. (EG/2012/2090)
Progress Section-02
Page 2 of 24
Our Client…
Page 3 of 24
Fly Back to 1st Progress Section:
Water purification technologies
Proposed design
Next step
Page 4 of 24
Conceptual Design
Modifications• Heavy metal filter at last• More user friendly
Page 5 of 24
Page 6 of 24
Ready for Testing..
Page 7 of 24
Page 8 of 24
Fabrication
Page 9 of 24
Selecting Parameters
Chemical equations
Thermodynamic diagrams
Experimental results
Page 10 of 24
Source: Industrial waste water treatment book- Frank Woodard
Page 11 of 24
Selecting Electrodes
Ref: Bazrafshanet al. Journal of Environmental Health Science & Engineering (2015)
Page 12 of 24
Concentration Vs. Time
Removal of T race H eavy Metals from Drinking Water by ElectrocoagulationJoe Heffron-Marquette University
Page 13 of 24
Ceramic filter
Electrocoagulation treatment
Charcoal filter
UV treatment Post filter
Secrete of 5 Stage Filtering..
Page 14 of 24
CAD Design
Ceremic filter
Charcoal filter
Electrocoagulation chamber
Post filter
UV filterStorage tank
Page 15 of 24
Fabricated Model for Testing
Page 16 of 24
Ceramic Filter
Purify water from sand, mud and other suspended matters- sediments
Inexpensive and commonly available in market
Easy to use
Efficiency depends on the height water (container)
Automatically continuous feeding system of water to
The container with the aid of a mechanical floating valve
Page 17 of 24
Charcoal filterCan be purchased at low price
Removing chlorine, sediment, hexavalent volatile organic compound, order and taste
Efficiency of filter is based on flow rate
Page 18 of 24
Why electrocoagulation
No chemicals.Less sludge.Low initial cost.Easy maintenance.Less voltage requirement can be supplied.High effectiveness
Page 19 of 24
Electrocoagulation Reactor
Page 20 of 24
Not only a purifier…
Purifier• Decontamination• Remove smell and flavours• Remove of metal ions
including As, Cd, Pb, Ni, Cu and etc.
• Dechlorination• Remove colloidal particles
Water quality improver
• Water soften• Oxygen saturation• Reduce ORP ( Oxidation
Reduction Potential)• pH balanced• Reduce surface tension
Page 21 of 24
Factors affected for electrocoagulation
Wherem -mass liberated from the anode I -current (A) t -reaction time(s)M -molar mass (g/mol), =for Al, M=26.98 g/mol; Z -valence number=for Al, Z=3F -Faraday’s constant (C/mol)=(96,486 C/mol).
𝑚=𝐼 .𝑡 .𝑀𝑧 .𝐹
Page 22 of 24
Reactor for electrocoagulation
Control circuit
Solenoid
Inlet
outlet
electrodes
Page 23 of 24
UV- purifier
Uv filter
Uv bulb
Stainless steel
Page 24 of 24
THANK YOU…