污水再生全流程中分段进水A/O除磷工艺启动研究  

STUDY OF STEP-FEED ON START-UP OF A/O PHOSPHORUS REMOVAL PROCESS IN INTEGRATED RECLAMATION

作　　者：马金明[1] 李冬[1] 张杰[1,2] 蔡言安[1] 吴迪[1] 崔少明[1] 

机构地区：[1]北京工业大学水质科学与水环境恢复工程北京市重点实验室,北京100124 [2]哈尔滨工业大学城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090

出　　处：《水处理技术》2013年第3期120-124,共5页Technology of Water Treatment

基　　金：国家自然科学基金(50878003);北京市自然科学基金(8092006);城市水资源与水环境国家重点实验室开放基金(QAK201005);国家水体污染控制与治理科技重大专项(2008ZX07208-003-003;2008ZX07208-005-003;2009ZX07424-001;2009ZX07424-002-003;2009ZX07424-005)

摘　　要：采用A/O除磷工艺中试装置处理实际生活污水,研究了生物除磷系统的快速启动策略。结果表明,在启动初期向好氧段分流体积分数45%的进水有利于抑制硝化反硝化作用,有利于加速聚磷菌的富集,分段进水3 d后即可明显抑制硝化反硝化作用,进出水氨化率26.82%、硝化率8.98%,同时,长时间分段进水会导致过高的有机负荷进入好氧段而引起丝状菌污泥膨胀,取消分段进水并降低负荷后,污泥膨胀短期内即可恢复,对系统的运行影响较小。控制负荷和分段进水有利于实现无硝化A/O生物除磷系统的快速启动。系统启动,运行24 d后可实现TP去除率为90%,出水TP的质量浓度为0.5 mg/L以下。Domestic wastewater was treated by pilot test of A/O biological phosphorus removal process and fast starting-up technology was studied.The results showed that divert 45% of the influent into the aerobic stage at initial stage of starting was beneficial to inhibiting nitrification/denitrification and accelerating the enrichment of phosphate accumulating organisms.After 3 d of step-feed,nitrification/denitrification can be inhibited significantly,with a low influent and effluent ammonification rate of 26.82% and nitrification rate of 8.98%.However,long term of step-feed could lead to high COD loading into aerobic tank and filamentous sludge bulking.The sludge bulking would be recovered after step-feed was canceled,and there was little effect on the A/O system.Controlling the load and step-feed was proved to be beneficial to the starting-up of A/O biological phosphorus removal process.After the system was running for 24 d,the removal rate of TP reached 90% and TP concentration in effluent was below 0.5 mg/L.

关 键 词：分段进水 A O生物除磷工艺 负荷 泥龄 生物染色 

分 类 号：X703.1[环境科学与工程—环境工程]