Can coking wastewater be treated through biochemical methods to achieve zero discharge and reuse at present?
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The company generates 100 cubic meters of coking wastewater per hour; is it possible to achieve zero discharge and reuse of this water through biochemical treatment?
For coking wastewater, biochemical treatment cannot achieve the required standards
If the biochemical test results do not meet the standards, using a COD precipitant can help meet your requirements for water reuse.
It is not recommended to recycle biochemical wastewater into the circulating water unless it is absolutely necessary. At present, even if the wastewater from coking plants after biochemical treatment meets the standards, recycling it into the circulating water will prevent the entire circulating water system from being able to discharge waste, as the water in the circulation system will no longer meet the discharge requirements.
It’s entirely possible. We have already implemented a technology in many coking enterprises: all wastewater that does not meet the standards after biochemical treatment is used as makeup water for the circulating water system. Special chemicals are employed to prevent scaling and corrosion in the system, and discharge from the circulating water system is avoided over the long term. Multifunctional rapid water purifiers are used to control the turbidity of the circulating water, thereby achieving zero discharge of coking wastewater.
Even the professors at Nanjing University have not managed to achieve zero emissions; they can only reach near-zero emissions. The water purification equipment currently in use are ultrafiltration devices and reverse osmosis systems. The filtered water meets the standards, but it also removes wastewater; no one can claim to achieve zero emissions. The chemicals used are things like reverse osmosis scale inhibitors and reverse osmosis disinfectants; standard-grade products are more effective, as there are many fake products on the market that are not very effective.
Don’t believe in zero emissions. It would be good to achieve 80% reuse.
Believe it or not? Will it work? Let the facts speak. Everyone can go to the project site for an on-site inspection. You can also bring the instruments to the site for testing.
None of the four great inventions of the Chinese people are related to Nanjing University; if you don’t believe it, you can ask the professors at Nanjing University.