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Advanced treatment of low COD wastewater

Reconstruction is the main purpose of sewage treatment plant emission standards to improve a grade B standard for the level A standard, emissions of sewage in the COD, ammonia nitrogen, total nitrogen and total phosphorus and improve to meet these requirements it is necessary to re design of the sewage treatment facilities (as little as possible, it is necessary to re design changes) to improve the sewage treatment capacity of the effluent to meet the requirements of the standard of sewage treatment facilities...