STP - Please Suggest Best Solution

Response #1 needs no further expansion.

The information you provide is inadequate for any further comments.

I question why anyone would want to pay to treat it twice! I would also like to believe that in the planning of the CETP. Means of disposal of the water and solid waste was in the planning.

I would also think that the powers to be at the STP would also question it. As the waste is coming from an industries. They may not be set up to handle the chemical contaminates.

Sound fishy to me!

Most municipalities will have sewer use bylaws that define the limits of most parameters including metals. A dairy may have limits on the BOD loading to a municipal sewage system. If not the whole town could smell of H2S in very short order. Pre-treatment is also required if a particular industry has a waste product that the STP cannot handle. Some metals may upset the biological processes of the plant. So handling waste more than once is required. The final disposal of the sludge is also framed in different nutrient and metal ratios. Some sludge cannot be spread on agriculture land and then some may be readily accepted. The operators of the STP and the municipality need to know and they will enforce their bylaws if they exist as they should.

In fact the scheme should have been, combined trade waste & sewage treatment and the final let out be safer discharge. The sewage in put reduces TDS and give a sort of dilution effect to the industrial effluent. We have seen such a scheme in Dottballpur Industrial area in Karnataka, India, but whether the scheme is operational is unsure.

Based on the complex characteristics of the combined effluent of your CETP, what is primarily important is the determination of primary treatment coagulant system or coagulation method, which if properly done, will take care of rest your treatment & disposal targets.

If you are particular about pipe line work consultation in this forum, I am sorry I have no relevance.

If you want support for treatment technology part of the CETP, we can provide you possible support by way of Scientific study of the complex in put combined effluent from various industries & demonstrate a viable primary treatment as per scheme of your CETP. If found feasible, we can think of the Hybrid Hydro Power generation from your CETP, by which revenue generation via selling power to grid can also be facilitated.

Please feel free to contact me via private message system in CR4.

What was the aim of the CETP? If it was designed to bring the outflow to environment discharge levels, and still meets current legislation, then continue to discharge where authorised.

If this is a new plant, and the parameters have been agreed with the STP, then these values should be acceptable.

If no-one has spoken to the environmental agency, or the STP, then there is a major problem, as the treatment in the CETP must be suitable for discharge to one of these options - including flow rates.