硝化/反硝化滤池用于一级A水质提升的中试研究

Pilot Test of Nitrification and Denitrification Biofilters for Improving Water Quality from First Level A Criteria to Surface Water Class Ⅳ Criteria

研究了硝化和反硝化滤池系统应用于市政污水一级A出水水质提升至Ⅳ类地表水水质的可行性。当中试系统进水NH_4^+-N均值为16.05 mg/L时,出水NH_4^+-N均值为0.3 mg/L,硝化滤池的平均硝化负荷为0.32 kg NH_4^+-N/(m^3滤料·d);进水TN均值为17.9 mg/L时,出水TN均值为2.7 mg/L,反硝化滤池的平均脱氮负荷为1.2 kg N/(m^3滤料·d);进水TP均值为0.65mg/L时,出水TP均值为0.27 mg/L。中试结果表明硝化和反硝化滤池系统基本可以满足将市政污水一级A出水水质提升至Ⅳ类地表水水质的提标改造要求。

The feasibility of improving effluent quality from the first level A criteria for municipal sewage to the surface water class Ⅳ criteria by nitrification and denitrification biofihers was investigated. When the average NH4^＋ - N concentration in the influent of the pilot test system was 16.05 rng/L, the average NH4^＋ - N concentration in the effluent was 0.3 mg/L, and the average loading rate in nitrification biofilter was 0.32 kgNH4^＋- N/（m^3 media·d）; when the average TN concentration in the influent was 17.9 mg/L, the average TN concentration in the effluent was 2.7 mg/L, and the average loading rate in denitrification biofilter was 1.2 kgN/（m^3media· d） ; when the average TP concentration in the influent was 0.65mg/L, the average TP concentration in the effluent was 0.27 mg/L. Pilot results showed that nitrification and denitrification biofilters could meet the requirements for improving effluent quality from the first level A criteria for municipal sewage to the surface water class Ⅳ criteria.