瞬时有机负荷冲击对SBR反应器的影响及调控措施  

Effects of instantaneous organic load shock on SBR reactor and control measures

作　　者：艾胜书[1,2] 刘轩彤 王帆 杜林竹[1,2] 边维 边德军 AI Shengshu;LIU Xuantong;WANG Fan;DU Linzhu;BIAN Wei;BIAN Dejun(Changchun Institute of Technology,Changchun 130012,China;Jilin Provincial Key Laboratory of Municipal Wastewater Treatment,Changchun 130012,China)

机构地区：[1]长春工程学院,吉林长春130012 [2]吉林省城市污水处理重点实验室,吉林长春130012

出　　处：《环境保护科学》2022年第5期115-120,共6页Environmental Protection Science

基　　金：国家自然科学基金资助项目(51878067);吉林省科技发展计划项目(20190303091SF);吉林省教育厅科学研究项目(JJKH20210684KJ)。

摘　　要：为探究瞬时有机负荷(OLR)冲击对序批示活性污泥法(SBR)处理城镇污水的影响,进行了单周期瞬时高浓度OLR冲击试验,考察冲击时污染物去除效果及冲击前后胞外聚合物(EPS)组分及含量变化,并给出系统自然恢复的周期。通过调节曝气量的方式应对冲击,确定不同有机负荷条件下的最适曝气量。试验结果表明,系统在负荷达到0.68 g/(L·d)时出水COD、NH_(4)^(+)-N、TN和TP不能满足污水处理厂污染物排放标准。此时系统冲击前多糖(PS)和蛋白质(PN)分别为16.62和14.62 mg/g,冲击后EPS组分中PN含量无明显变化,PS含量经过11个周期自然恢复,在第5个周期PS达到最大值为30.17 mg/g,且反应器出水污染物能满足污水处理厂污染物排放标准。当有机负荷达到0.68 g/(L·d)时,系统最适曝气量2.1 L/min。To explore the effect of transient organic load shock on the sequential activated sludge process(SBR)treatment in the urban sewage,a single period transient high concentration OLR shock test was carried out to investigate the effect of the pollutant removal and the changes of extracellular polymer(EPS)composition and content before and after shock,and the natural recovery period of the system was obtained.The optimal aeration volume under different organic load conditions was determined by adjusting aeration volume to cope with the shock.The experimental results showed that the effluent COD,NH_(4)^(+)-N,TN and TP cannot meet the pollutant discharge standards of the sewage treatment plant with the system load of 0.68g/(L·d).The polysaccharide(PS)and protein(PN)were 16.62 mg/g and 14.62 mg/g before the system with a shock,respectively.After the shock,the PN content in the EPS component did not change significantly.The PS content recovered naturally after 11 cycles,and the PS content reached the maximum value of 30.17 mg/g in the fifth cycle.And the effluent pollutants from the reactor could meet the pollutant discharge standards of the sewage treatment plant.When the organic load was 0.68 g/(L·d),the optimal aeration volume of the system was 2.1 L/min.

关 键 词：有机负荷冲击 SBR系统 胞外聚合物 自然恢复 气量调控 

分 类 号：X703[环境科学与工程—环境工程]