摘要
珠海市某水质净化厂一期工程原采用传统活性污泥处理工艺，无脱氮除磷功能，处理规模为1．8×10^4m3／d。对原工艺的初沉池和曝气池进行改造（改造后称ZL工艺），改造后运行的第一阶段（第1～30天）出水TP平均浓度为1．1mg／L，平均去除率为58．4％，出水TP〉1mg／L的几率达48．4％。通过及时调整运行模式，第二阶段（第30～121天）出水TP平均浓度为0．34mg／L，平均去除率为83．7％，符合《城镇污水处理厂污染物排放标准》（GB18918--2002）的一级B标准；两个阶段出水TN均符合《城镇污水处理厂污染物排放标准》（GB18918--2002）的一级A标准；由于改造不增加新池体，新工艺没有混合液回流，因此整个改造工程造价低，运行节能，成功实现了脱氮除磷目标。
Traditional activated sludge process was adopted in the first-phase project of a munici- pal sewage treatment plant in Zhuhai City, and the plant had no nitrogen and phosphorus removal func- tion. The treatment capacity was 1.8 ×10^4m3/d. The primary settling tank and aeration tank of the orig- inal system were reconstructed, and the new process is named ZL. The average concentration of effluent TP was 1.1 mg/L in the first stage after the reconstruction （from day 1 to day 30） , the average removal rate of TP was 58.4% , and the probability of effluent TP above 1 mg/L was 48.4%. The running mode was changed in the second stage after the reconstruction （from day 30 to day 121 ）. The average concen- tration of effluent TP was 0.34 mg/L, the average removal rate of TP was 83.7% , the effluent TP met the first level B criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treat- ment Plant （GB 18918 -2002）. The effluent TN in the two stages met the first level A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （GB 18918 -2002）. Due to no increase of new tank and no mixed liquid recycle, sumption were low, and the goal of nitrogen and phosphorus choices for upgrading the municipal sewage treatment plants moval function. the reconstruction cost and the energy con- removal was achieved. It is one of the best which have no nitrogen and phosphorus re-
出处
《中国给水排水》
CAS
CSCD
北大核心
2014年第6期81-84,共4页
China Water & Wastewater
关键词
工艺改造
脱氮除磷
运行模式
process reconstruction
nitrogen and phosphorus removal
running mode
