好氧颗粒污泥工艺处理低浓度市政污水实现高效脱氮除磷  

Achieving high efficiency phosphorus and nitrogen removal in low-strength municipal wastewater treatment with aerobic granular sludge process

作　　者：马林 王香莲 贾春芳 彭云清 徐伟 药宝宝 陈凯 胡清 章雄飞 MA Lin;WANG Xianglian;JIA Chunfang;PENG Yunqing;XU Wei;YAO Baobao;CHEN Kai;HU Qing;ZHANG Xiongfei(HD Environmental Consortium,Beijing 100083,China;General Water of China Co.Ltd.,Beijing 100022,China;School of Environment,Southern University of Science and Technology,Shenzhen 518055,China;CECEP Shenzhen Renewable Energy Co.Ltd.,Shenzhen 518104,China)

机构地区：[1]北京环丁环保大数据研究院,北京100083 [2]中环保水务投资有限公司,北京100022 [3]南方科技大学环境科学与工程学院,深圳518055 [4]深圳中节能可再生能源有限公司,深圳518104

出　　处：《环境工程学报》2024年第6期1489-1498,共10页Chinese Journal of Environmental Engineering

摘　　要：为探索好氧颗粒污泥(aerobic granular sludge,AGS)工艺在低浓度市政污水处理中应用的可行性,本研究在中环水务下属某市政污水处理厂内搭建了处理规模为500 m^(3)·d^(-1)的好氧颗粒污泥反应器(aerobic granular sludge reactor,AGSR)。以污水厂低浓度实际市政污水为进水基质、接种厂区现有生化段絮状污泥,成功实现了污泥颗粒化。污泥平均粒径由33.85μm增至158.25μm,SVI30由118.42 mL·g^(-1)降至45 mL·g^(-1)。在不投加外部碳源和除磷药剂的情况下,AGSR出水化学需氧量、氨氮、总磷、总氮、悬浮物平均质量浓度分别为19.4、0.26、0.28、11.7、4 mg·L^(-1),COD容积负荷率为4 m^(3)·(m^(3)·d)^(-1),实现了高效脱氮除磷。16S rRNA基因分析结果表明,运行期间与脱氮、除碳、除磷相关的功能菌为优势菌属。与厂内运行的A2/O工艺相比,采用AGS工艺可节省40%左右的运行电耗、100%的外加碳源和除磷药剂。以上研究结果可为AGS工艺在低浓度市政污水处理领域的推广和应用提供参考。To explore the feasibility of aerobic granular sludge(AGS)technology to treat low-strength municipal wastewater,a facility of 500 m^(3)·d^(−1) aerobic granular sludge reactor(AGSR)was set in a municipal treatment plant of General Water of China Co.Ltd..The low-strength wastewater of the actual wastewater treatment plant(WWTP)was taken as influent and substrate of AGSR being inoculated the flocculent sludge in biochemical stage of this WWTP,and sludge granulation successfully occurred.The average diameter of the sludge increased from^(3)3.85μm to 158.25μm,the SVI30 index decreased from 118.42 mL·g^(−1) to 45 mL·g^(−1).Without the addition of extra-carbon sources and dephosphorization agents,COD,,TP,TN and SS of AGSR effluent were 19.4,0.26,0.2811.7 and 4 mg·L^(−1),respectively,and COD volumetric loading rates reached 4 m^(3)·(m^(3)·d)^(−1),highly effective nitrogen and phosphorus removal realized.16S rRNA gene analysis indicated that the dominant bacterial genus belonged to the functional groups associated with denitrification,carbon removal,and dephosphorization during operation.In comparison with the A 2/O process in this WWTP,AGSR could save 40%power consumption,and 100%external carbon source and dephosphorization agent.The above results can provide a reference for promotion and application of AGS process in the field of low-strength municipal wastewater treatment.

关 键 词：好氧颗粒污泥 低浓度市政污水 高效脱氮除磷 污泥颗粒化 

分 类 号：X703[环境科学与工程—环境工程]