Electroplating, galvanizing and chemical plating is an industry of metal finishing which is integral to manufacturing industry but which results in the release of large quantity of wastewater and effluent too. This effluent contains high degree of dissolved metals such as copper, lead, chromium, tin, zinc, mercury etc which contribute to constant toxicity resulting in the rise of grave environmental issues. Our government has laid down a series of regulations on such industries for safer and secure disposal of sewage and effluent and they keep strict vigil on their compliance with the law, but again meeting such law and by-laws pose a new challenge before the industries. The versatile solution lies in the custom design of some effluent treatment plant for electroplating industry and expertise is always being looked for. Hence, being the most notable manufacturer of effluent treatment plant for electroplating industry, our insightful engineers and site supervisors are all capable to design and deploy the most suitable and highly customized effluent treatment plant to address your objectives unique to your industry. Further, a range of effluent treatment solutions already exists and we can customized any system to suit the interest, needs and budget of our clients, who look for safe disposal of effluent or for reuse.

Generally, the following stages are implemented during the course of effluent treatment plant operation:

• Precipitation and Coagulation: At stage 1, a coagulant is added like ferric chloride and pH is made to increase from 3 to 8.5, however while effluent can be tested to ensure if a coagulant is needed or not. In some cases some extra and high performance coagulants are needed since there are present chemicals and emulsifiers that enhance plating and hence to split the bonds and to enable metal to precipitate.
• Flash Mix: This is stage 2 where the wastewater or effluent is transferred to flash mix zone which also draws a polymer flocculent and the flocculent is broken down in smaller units and is dispersed in the flow of coagulated wastewater or effluent.
• Flocculation: This comes to stage 3, where slow mix zone becomes operational and wastewater or effluent is sent there in order to agglomerate the pin floc into bigger particles.
• Clarifier, Bent Plate: Here the flocculated effluent is sent into clarifying zone where the particles that settle are made to land upon bent plates and are transmitted downside and into sludge chamber too. After this, the water that is treated appears on top of the clarifier which is then made to flow downstream to sewer.

Pre-treatment Or Preliminary Treatment Level:-
Here, the solids with larger size are removed certain activities are involved such as coarse screening, grit removal or crushing big solids into smaller objects. After such treatment, the wastewater is sent to next step of treatment level.

Primary Treatment Level:-
Gross filtration takes place so as to remove the big volume of solid objects that are still left in the effluent and here upto 50% or 60% f suspended solids are taken out, which also include oil, grease, nitrogen, phosphorus etc which remains glued to such solid objects.

Secondary Treatment Level:-
Here, aerobic and anaerobic processes are initiated to remove the suspended solids as well as other residual matter. The sludge process which is activated is the most commonly used and relied one where aeration tank is put into action containing oxygen that is supplied to microorganisms and as a result of which, biodegradable waste is removed thereby.

Tertiary Treatment Level:-
The sole purpose of such level is to completely rid the effluent of any harmful chemicals and contents, before it is left open to be mixed into the environment. Here, just like a fresh start, the hazardous elements are removed which are left during earlier levels and disinfection process is the key feature which chlorine, UV light, ozone etc are included and as a result of this, no contaminant is left in the effluent and it is termed safe to dispose into the environment and such water can be recycled and reused too.

WASTE WATER AND TREATED WATER CHARACTERSTICS:-
Wastewater will have the following characteristics of before and after treatment as per PCB norms. As the BOD load is equally distributed in daily discharge, no separate BOD removal is suggested.

NOTE:-
As the BOD load is equally distributed in daily discharge, no separate BOD removal is suggested.

TREATMENT CONCEPT

• The effluent reach to ETP from all the streams is made homogeneous in the underground equalization tank, after subjected to, bar screen chamber, and Oil and grease trap.
• Air agitation is being provided in the equalization tank to ensure homogeneity.
• Effluent is lifted and transferred to flash mixer, where coagulant/chemicals are being added by dosing.
• Dosing is achieved by automatic dosing pumps for precise quantities of chemical dosing.
• Air agitation is provided in dosing tanks and flash mixer for mixing of solutions.
• The air quantity can be regulated by valves provided in the piping.
• The overflow solution of flash mixer shall be taken to clari-flocculator tank.
• Flocculent chemical is added in this tank with dosing pump, which help the impurities to form large flocs in the form of sludge.
• The clarifier is inclined tube type settler, having tubepac media for sludge separation. These are inclined tubes made out of PVC material, placed at an angle of 600.
• Sludge settles at the bottom of tube settler and treated water goes to biological treatment.
• Sludge from the bottom of the clarifier in being taken to sludge drying beds or filter press system for dewatering.
• Sludge cakes are being formed after separation of water.
• Solid waste will be transferred to land fill or PCB designated sites.
• Sludge settles at the bottom of secondary tube settler and treated water overflows to treated water holding tank.
• Filtered water from sludge dewatering system will be taken back to equalization tank.
• Water from TWHT is being transferred to DMF (Dual Media Filter) for final treatment of TSS.
• Water from DMF is being transferred to ACF (Activated Carbon Filter) for treatment of Color, Odor etc.
• Finally water will be discharged or used for horticulture.

BRIEF SCOPE OF SUPPLY:-
Our brief scope of supply will include following items for the integrated ETP: