低碳源污水深度脱氮除磷工艺的经济性分析及优化策略  

Economic Analysis and Optimization Strategy of Advanced Denitrification and Dephosphorization for Low Carbon Source Wastewater Treatment

作　　者：田海成 杨红红 焦文海 王磊 梁瑜海 吕育锋 TIAN Haicheng;YANG Honghong;JIAO Wenhai;WANG Lei;LIANG Yuhai;LÜYufeng(Jinan Municipal Engineering Design&Research InstituteCo.,Ltd.,Jinan 250001,China;College of Natural Resources and Environment,South China Agricultural University,Guangzhou 510642,China;China Institute of Water Resources and Hydropower Research,Beijing 100038,China)

机构地区：[1]济南市市政工程设计研究院<集团>有限责任公司,山东济南250001 [2]华南农业大学资源环境学院,广东广州510642 [3]中国水利水电科学研究院,北京100038

出　　处：《净水技术》2024年第7期56-62,110,共8页Water Purification Technology

摘　　要：我国污水处理厂普遍面临进水低碳源问题,同时各地区越来越严格的污水深度脱氮除磷排放标准也使得碳源投加成本日益增加。AAO工艺中的生物除磷与反硝化脱氮之间存在碳源争夺矛盾,采用生物除磷方式去除1 mg/L磷所消耗的BOD5药剂成本为0.154元/(m^(3)污水),反硝化脱氮去除1 mg/L氮所消耗的BOD5药剂成本为0.038元/(m^(3)污水)。因此,采用生物除磷方式去除1 mg/L磷所消耗的BOD5可供反硝化去除4 mg/L的氮。而采用化学除磷方式去除1 mg/L磷所消耗的混凝剂药剂成本以及污泥增加量产生的处理与处置成本合计为0.040元/(m^(3)污水),因此,采用生物除磷的成本相当于化学除磷成本的3.85倍。对于低碳源污水的深度脱氮除磷,采用化学除磷代替生物除磷的AOAO+化学除磷工艺具有运行成本低的优势。The wastewater treatment plants(WWTPs)are facing the problem of low carbon source at home,and the cost of adding carbon source is increasing due to the increasingly strict discharge standard of deep nitrogen and phosphorus removal from wastewater in different regions.In AAO process,there is competition for carbon source between biological phosphorus removal and denitrification nitrogen removal.The cost of BOD5 reagent to remove 1 mg/L phosphorus by biological phosphorus removal is 0.154 yuan/m^(3),the BOD5 cost of denitrifying nitrogen removal is 0.038 yuan/m^(3),so the BOD5 consumption of biological phosphorus removal can be used for denitrifying nitrogen removal of 4 mg/L.The total cost of coagulant reagent and the treatment and disposal cost of the increased amount of sludge for chemical phosphorus removal is 0.040 yuan/m^(3),therefore,the cost of biological phosphorus removal is 3.85 times of that of chemical phosphorus removal.For advanced nitrogen and phosphorus removal from low carbon source wastewater,AOAO+chemical phosphorus removal process,which uses chemical phosphorus removal instead of biological phosphorus removal,has the advantage of low operation cost.

关 键 词：低碳源 深度脱氮除磷 生物除磷 化学除磷 AOAO 运行成本 

分 类 号：TU992[建筑科学—市政工程]