溶解氧对好氧颗粒污泥处理城市污水的影响  

Effect of Dissolved Oxygen on Municipal Sewage Treatment by Aerobic Granular Sludge

作　　者：张颜 金文博 付丽丽 梁纪灵 鹿钦礼[1] 张伦秋[1] Zhang Yan;Jin Wenbo;Fu Lili;Liang Jiling;Lu Qinli;Zhang Lunqiu(College of Civil Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学土木工程学院,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2021年第4期28-33,共6页Journal of Liaoning Petrochemical University

基　　金：辽宁省自然科学基金项目(L2019005)。

摘　　要：研究了序批式活性污泥法(SBR)反应器中溶解氧(DO)质量浓度对好氧颗粒污泥(AGS)系统处理人工模拟城市污水效果的影响。通过改变曝气量,控制SBR反应器中DO的质量浓度:3 mg/L≤ρ(DO)<4 mg/L、2 mg/L≤ρ(DO)<3 mg/L和1 mg/L≤ρ(DO)<2 mg/L,对出水中的COD、NH_(4)^(+)-N、NO_(3)^(—)-N、NO_(2)^(—)-N、TN和P等指标进行检测。结果表明,DO质量浓度对COD、NH_(4)^(+)-N和P的去除率影响不显著,对TN的去除率影响明显。当3 mg/L≤ρ(DO)<4 mg/L、2 mg/L≤ρ(DO)<3 mg/L和1 mg/L≤ρ(DO)<2 mg/L时,TN的去除率分别达到62.14%、71.81%和82.11%;当1 mg/L≤ρ(DO)<2 mg/L时,AGS系统对TN的去除效果最好,此时AGS系统运行稳定,对COD、NH_(4)^(+)-N和P的平均去除率分别为90.43%、96.97%和76.00%。The effect of dissolved oxygen(DO)concentration on aerobic granular sludge(AGS)treatment on simulated municipal sewage was studied in SBR reactor.By changing the amount of aeration,the DO concentration in SBR reactor was controlled respectively in the range of 3 mg/L≤ρ(DO)<4 mg/L,2 mg/L≤ρ(DO)<3 mg/L and 1 mg/L≤ρ(DO)<2 mg/L.The concentrations of COD,NH_(4)^(+)-N,NO_(3)^(—)-N,NO_(2)^(—)-N,TN and P in the effluent were detected.The results show that the removal rates of COD,NH_(4)^(+)-N and P are affected little by the DO concentration,but the removal rate of TN is affected significantly.When 3 mg/L≤ρ(DO)<4 mg/L,2 mg/L≤ρ(DO)<3 mg/L和1 mg/L≤ρ(DO)<2 mg/L,the removal rate of TN is 62.14%,71.81%and 82.11%respectively;when 1 mg/L≤ρ(DO)<2 mg/L,the removal rate of TN reached the best for the AGS system and the system was stable.The average removal rates of COD,NH_(4)^(+)-N and P were 90.43%,96.97%and 76.00%,respectively.

关 键 词：溶解氧 好氧颗粒污泥 同步硝化反硝化 生物除磷 SBR 

分 类 号：X52[环境科学与工程—环境工程]