基于生物膜组合工艺的农村生活污水治理方案

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中图分类号： TQ085+.419;X703 文献标识码：A文章编号：1001-5922（2025）12-0162-04

Rural domestic sewage treatment scheme based on biofilm combined process

HE Shangwu （Guyuan Ecological Environment Bureau Xiji Branch Bureau，Guyuan 7562O5，Ningxia China）

Abstract：Aiming at the problem that the chemicaloxygen demand（COD）and ammonia nitrogen content of rural domesticsewage treated by traditional methods cannotreachthe stable discharge standard，ananaerobic-biofilm-anaerobic ammonia oxidationcombined process was constructed to treat ruraldomestic sewage.Firstly，the start-upeffectof theanaerobic-biofilm-anaerobic ammoniaoxidation reaction stage wasanalyzed，and then the effect of the system onthe treatment of rural sewage was characterized.The results showed that the stable operation time of anaerobic reaction stage，biofilm reaction stage and anaerobic ammonia oxidation reaction stage was more than 20 days，and the monomer was successfully started.The constructed anaerobic-biofilm-anaerobic ammonia oxidation system has a COD removal rate of about 92% and a ammonia nitrogen removal rate of about 98 % . After the system treatment，the effluent COD concentration is about 28mg/L ，and the ammonia nitrogen concentration is about 0.88 mg/L，which meets the national first-level discharge standard.

KeyWords： biofilm;sewage treatment;domestic sewage;anaerobic reaction;anaerobic ammonium oxidation

随着乡村振兴战略的深入推进，农村生活污水治理已成为改善农村人居环境、建设美丽乡村的关键任务。（剩余5064字）