The electroplating waste water treatment technology ::
In the whole treatment process of the sewage /waste water treatment , the most important treatment technology and the key process is a kind of electrochemistry process /method called “High-voltage pulse electric flocculation treatment”,which is the newest technology in the world .
We have built many plants in China ,and overseas with this kind of technology ,we get reputation from the goverment and our customers.
we thanks to the domestic and foreign experts for treatment technology guidence, We strive to be the most advanced envrionmental protection supplier .
The water treatment advantages of the the chemistry technology:
1.much more efficient on the removal of COD and heavy metals,reduce zinc,chromium, nickel, copper, and other heavy metals to under 0.2-0.1 ,superior to the domestic similar product the level,
2.Up to 90% removal of Chromium, zinc, iron in the Electroplating wastewater ,which contains many kinds of metal ions;
3.Up to 70% removal of COD,90% of suspended solids;
4.Up to 80%-90% removal of Pigment wastewater of printing and dying ;
5.Generates minimum sludge, hence less handling of sludge;
The water treatment features of this newest “high-voltage pulsed electric flocculation”technology :
1.The technology using high pressure pulse electrochemical flocculation water treatment principle, producing Fe 2+, Fe3+ Al3+,and other metallic ion, which will lead to redox reaction to the organic or inorganic in the wastewater;
2.then the pollutans and heavy metal ion condense, to Separated and sediment from the water.
3.Still, In electric coagulation process, the anode and the cathode surface constantly produce oxygen and hydrogen, so the tiny air bubbles escape, the air bubbles can adhere to flocculate and oil content in the waste water, then float to the surface of the water, lead to air flotation effect.
4.In addtion,electric coagulation reduce the content of BOD ,COD,SS.in the waste water.
How to reduce and and removel heavy metals??? that is the following:
Fe3+ +3OH-→Fe(OH)3↓
Fe2+ + 2OH- → Fe(OH)2↓
4Fe(OH)2 + O2 + 2H2O→4Fe(OH)3↓
Zn2+ + 2OH-→Zn(OH)2↓
How to remover COD???,the following is answer:
Fe-2e→Fe2+
4OH- - 4e→2H2O + 2O → 2H2O + O2↑
Oxygen has a strong oxidation ability, can removel oxidized organic or inorganic compounds in the water, remove the COD in the water.
The process of the water treatment diagram.
The water treatment capacity is 0--10 tons per hour.
Tanks and technology explanation
Tanks and technology explanation :
Stage 1,Grating:
Remove the larger particles suspended solids which floating on the surface of the raw water ,to protect the pump machine ,thread and cloth.
Stage 2,Water collecting tank :
After grating ,the water flow into the water collecting tank ,which also can store much waste textile ,dyeing water .
Stage 3,Heart exchange:
In the water collecting tank, the heart axchange reduce the waste water temp ,saving energy from wastewater
Stage 4,Adjust tank:
In this tank,the water mix with each other ,maily adjust the the is about 5--6,ensuring the steady working .
Stage 5,Electric flocculation Tanks :
l Using the electrochemical principle, producing Fe 2+,Al3+,and other metallic ion in the barrel , which will lead to redox reaction to the organic or inorganic in the wastewater;
l .then the pollutans and heavy metal ion condense, to Separated and sediment from the water.
l Still, In electric coagulation process, the anode and the cathode surface constantly produce oxygen and hydrogen, so the tiny air bubbles escape, the air bubbles can adhere to flocculate and oil content in the waste water, then float to the surface of the water, lead to air flotation effect.
l In addtion,electric coagulation reduce the content of BOD ,COD,SS.in the waste water.
Stage 6,Aeration Tank:
In this tank ,the chemical agent (,PAM),react to the activated sluge which can decompose organic matter in wastewater.
Stage 7,Sedimentation tank :
l In this tank ,the treated water and activated water are seprated with each other .
l The actived sluge sink into the bottom ,then go through to the sluge tank with pipe.
l The water will flow into the clear water tank.
l Some wastewater return back to the electic flocculation .
Stage 8,Sluge tank:
The sluge is pumped to the plate -and -frame filter press ,by using sluge pump to dehydrate water in it.After that ,sluge shipment.
l The actived sluge sink into the bottom ,then go through to the sluge tank with pipe.
l The water will flow into the clear water tank.
l Some wastewater return back to the electic flocculation .
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water treatment process of electroplating / industry waste water purification process for our customer
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