UCT工艺处理生活污水的实验研究  

Experimental study on treatment of domestic sewage by UCT process

作　　者：孙鹏展 吴俊奇 王真杰[2,3] 刘书敏 贾军峰 SUN Peng-zhan;WU Jun-qi;WANG Zhen-jie;LIU Shu-min;JIA Jun-feng(School of Environmental and Energy Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Science and Technology and Industrialization Development Center of the Ministry ofHousing and Urban-Rural Development,Beijing 100835,China;Beishi Technology Co.,Ltd.,Beijing 100124,China)

机构地区：[1]北京建筑大学环境与能源工程学院,北京100044 [2]住房和城乡建设部科技与产业化发展中心,北京100835 [3]倍适科技有限公司,北京100124

出　　处：《应用化工》2020年第3期641-644,650,共5页Applied Chemical Industry

基　　金：北京教育委员会科技发展计划项目(SQKM201710016006)。

摘　　要：采用气提式UCT工艺处理高氨氮城市生活污水,研究了启动和稳定运行阶段系统对COD、NH^+4-N和TP的去除规律。结果表明,经过19 d的启动,对COD和NH^+4-N的平均去除率分别为86.17%和83.04%;稳定运行后,系统对COD、NH^+4-N和TP的平均去除率分别为82.94%,97.84%和58.31%,出水平均浓度分别为36,1.9,5.34 mg/L,COD、NH^+4-N均达到GB 18918—2002《城镇污水处理厂污染物排放标准》一级A排放标准。70%的COD在厌氧区和缺氧区被利用,进水中较高浓度的NH^+4-N对COD去除没有影响,好氧区采用大曝气量去除高浓度NH^+4-N,硝化效果较好,NH^+4-N最高去除率为99.73%,基本实现NH^+4-N零排放。在UCT工艺中,高氨氮生活污水有利于缺氧区的反硝化除磷,排泥能显著降低出水TP浓度。The high-ammonia nitrogen urban domestic sewage was treated by gas-lifting UCT process.The removal of COD,NH^+4-N and TP in the startup and stable operation stages was studied.The results showed that after 19 d of startup,the average removal rates of COD and NH^+4-N were 86.17%and 83.04%,respectively.After stable operation,the average removal rates of COD,NH^+4-N and TP were 82.94%,97.84%and 58.31%,respectively.The average effluent concentrations were 36 mg/L,1.9 mg/L and 5.34 mg/L,respectively.COD and NH^+4-N can reach GB 18918—2002 the pollutant discharge standard of urban sewage treatment plant National Level A emission standard.70%of COD is utilized in anaerobic and anoxic zone.Higher concentrations of NH^+4-N in the influent have no effect on COD removal.The removal of NH^+4-N is achieved by large aeration,and the nitrification effect is better.The maximum removal rate of NH^+4-N is 99.73%,which basically achieves zero emission of NH^+4-N.In the UCT process,high ammonia nitrogen domestic sewage is beneficial to denitrifying phosphorus removal in the anoxic zone,and sludge discharge can significantly reduce the effluent TP concentration.

关 键 词：UCT工艺 高氨氮 脱氮除磷 反硝化除磷 

分 类 号：TQ085.4[化学工程] X703.1[环境科学与工程—环境工程]