• 关键词：生物除磷  厌-好氧循环工艺  活性污泥法

• 基金项目：清华大学青年研究基金

• 竺建荣
• 清华大学环境工程系,北京100084

• 刘纯新
• 清华大学环境工程系,北京 100084

• 何建中
• 清华大学环境工程系,北京 100084

• 顾夏声
• 清华大学环境工程系,北京 100084

• 摘要：采用模拟配制的生活污水,研究了厌好氧交替工艺对磷和有机污染物的去除效果。结果表明,经过驯化运行等阶段后,在高效除磷阶段运行期间,磷的去除效率在90%以上。总COD去除率通常大于90%.实验表明COD主要是在好氧阶段被去除。反应器的有机处理负荷Fr达1.21-1.5kg(COD)/(m³·d).这些良好的运行性能与反应器中培养出好氧颗粒活性污泥有关。运行过程中,不必投加外部碳源(甲醇或乙酸钠),只利用生活污水自身的有机物就能达到如此好的除磷和降解COD效果,而且该工艺的曝气时间仅为传统活性污泥法的一半。

• Abstract：This paper describes the phosphorus (P) and COD removal characteristics in alternation of aerobic/anaerobic (AAA process) using synthetic domestic wastewater as feed. It is shown that through the cultivation and operation of the technology, the influent P concentration of 9 84-13 57mg/L can reduce to about 1mg/L of effluent at the 4 th stage, P-removal efficiencies reach more than 90%. The influent COD of 372.548 mg/L decreases to 20.50 mg/L of effluent,total COD removal efficiency is higher than 90%. The proportion of COD removal in anaerobic operation period is 16.7%-33.4%,and 54.9%-75.6% in aerobic operation period.This indicates that the degradation of COD mainly occurs in aerobic period.These good operational properties of AAA process are attributed to the formation and cultivation of granular activated sludge in the reactor,which is first reported.It is unnecessary to add any external carbon source for operation.The reactor can effectively metabolize organic matters and conversion of phosphorus,and only uses half aeration of the conventional technology.It implies that AAA process is a good potential treatment process both in P removal and COD degradation.

• Key words：biological P-removal  alternation of aerobic/anaerobic process  activated sludge process

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