Concentrate treatment technology for coking wastewater after membrane osmosis
Thread Content
Coking wastewater has long been recognized in the industry as difficult to treat, and now zero-discharge requirements have been imposed on it as well. Currently, due to the pressure for zero emissions in the industry, advanced membrane filtration and reuse systems are widely used. While this solves the problem of wastewater reuse, it also introduces new issues, primarily related to the treatment of concentrated water streams generated by nanofiltration and reverse osmosis. Especially the reverse osmosis concentrate, accompanied by unfavorable factors such as high COD, high chloride ions, high fluoride ions, high total nitrogen, and high total cyanide, is even more difficult to treat. Based on the above factors, I would appreciate it if experts could help come up with some ideas, such as what application technologies are currently in use, which organizations are employing them, and how well they are being utilized, etc.
De-fluorination and de-cyanidation + evaporation – we can handle this
After ammonia evaporation in coking wastewater, it can be directly used as make-up water for the circulating water system without the need for further membrane treatment. If membrane treatment has already been employed, the concentrated water can also be used directly as make-up water for circulating water.