Technical discussion: A2/O process for treating coking wastewater
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This post was last edited by hesonchang214 on 2009-11-29 15:19. Ask Haiyou for advice: How effective is the A2/O process in treating coking wastewater? What are the pros and cons?
This post was last edited by hesonchang214 on 2009-11-29 15:44 Coking wastewater is generated from the high-temperature carbonization of raw coal, gas purification and chemical product refining. The composition of wastewater is complex, and its water quality changes with the composition of raw coal and the coking process. Coking wastewater contains dozens of inorganic and organic compounds. Among them, inorganic compounds mainly include large amounts of ammonia salts, thiocyanide, sulfide, cyanide, etc. In addition to phenols, organic compounds also include monocyclic and polycyclic aromatic compounds, heterocyclic compounds containing nitrogen, sulfur, and oxygen. In short, coking wastewater is seriously polluted and is a prominent environmental problem in industrial wastewater discharge. A2/O process advantages: ●The principle of the A2/O process with high effluent quality is aimed at high-efficiency biological nitrogen and phosphorus removal. The process operates reliably and saves the use of chemicals. ●Convenient operation and management. The A2/O process has strong impact load resistance and stable operation. ●High sludge fertilizer efficiency. The remaining sludge from the A2/O process contains 3% to 5% phosphorus, has high fertilizer efficiency, and can be used as sludge compost.