A^2/O工艺城市污水处理厂的启动与调试  

Startup and commissioning of A^2/O municipal wastewater treatment plant

作　　者：邱兆富[1] 周琪[1] 杨殿海[1] 李风亭[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《给水排水》2005年第9期30-33,共4页Water & Wastewater Engineering

摘　　要：当曝气池水温为12.9-22.2℃,平均进水CODCr为142 mg/L时,在不接种的条件下,通过投加聚硅硫酸铁(PFSS)和聚丙烯酸(PA),经闷曝和连续进水两个阶段,完成了A2/O工艺城市污水处理厂的启动与调试。闷曝阶段,PFSS投加量为6 mg/L时,可使MLSS提高22%。当PFSS和PA的投加量分别为30 mg/L和0.05 mg/L时,MLSS达到100 mg/L即可进入连续进水阶段,从而缩短了启动时间。污泥培养58 d,MLSS达到3 000 mg/L,CODCr去除率稳定在80%左右,脱碳功能形成,且污泥中存在反硝化细菌和聚磷菌。污泥培养89d,当进水氨氮为10.8-21.4 mg/L时,氨氯去除率稳定在90%以上,硝化功能形成。Without inoculation and any other nutriment, when water temperature of the aeration tank is 12.9-22.2℃ and the average influent CODcr is 142 mg/L, by putting in poly ferric silicate sulfate （PFSS） and polyacrylic acid （PA）, startup and commissioning of an A^2/O municipal wastewater treatment plant is finished through two stages, batch flow and continuous flow stages. At the first stage, dosage PFSS 6 mg/L can increase the mixed liquor suspended solids （MLSS） by 22%. By PFSS dosage of 30 mg/L and PA dosage of 0.05 mg/L, the continuous flow stage can be started when MLSS is about 100 mg/L. Therefore the startup period can be shortened. It is show that MLSS in the reactor is high than 3 000 mg/L after 58 days, and about 80% CODer is removed. The experimental results show that the cultured sludge contains phosphate-accumulating bacteria and denitrifiers. After 89 days, nitrification is achieved. As the influent ammonia is 10.8～21.4 mg/L, more than 90% ammonia is nitrified.

关 键 词：城市污水 脱氮除磷 启动与调试 聚硅硫酸铁 聚丙烯酸 城市污水处理厂 A^2/O工艺 调试 CODCR去除率 反硝化细菌 

分 类 号：X505[环境科学与工程—环境工程] X703