混凝-二级AO耦合工艺处理垃圾渗滤液研究  

Study on the Treatment of Landfill leachate by Coagulation-Two-stage AO Combined Process

作　　者：童笑琴 刘东方[1,2] 曹振华 徐俐 付明翔 TONG Xiaoqin;LIU Dongfang;CAO Zhenhua;XU Li;FU Mingxiang(School of Environmental Science and Engineering,Nankai University,Tianjin 300350,China;Nankai Cangzhou Bohai New Area Green Chemical Research Co.,Ltd.Cangzhou,Cangzhou 061100,China)

机构地区：[1]南开大学环境科学与工程学院,天津300350 [2]南开沧州渤海新区绿色化工研究有限公司,河北沧州061100

出　　处：《水处理技术》2023年第1期87-91,共5页Technology of Water Treatment

基　　金：沧州渤海新区制药与化工行业高盐有机废水处理与零排放研究与应用(NCC2020FH11)。

摘　　要：采用“混凝-二级A/O”组合工艺处理垃圾转运站渗滤液,并分析了梯级驯化过程中一级AO的微生物群落组成。结果表明,pH在7.5时,0.4 g/L聚合氯化铝与20 mg/L聚丙烯酰胺配合使用混凝效果最佳;一级A/O池、二级A池和二级O池水力停留时间分别为48 h、48 h和24 h时,出水COD、NH4+-N去除率最高达83.85%和94.67%。通过高通量测序技术对梯级驯化中一级AO反应器微生物群落进行分析,发现优势菌门为Proteobacteria,A池主要菌属为Candidatus-Competibacter和OLB14,O池主要菌属为Candidatus-Competibacter、SC-I-84和C10-SB1A。The"coagulation-two-stage AO"combined process was used to study the treatment of the leachate in the garbage transfer station,and the microbial community composition of the first-stage AO in the cascade domestication process was analyzed.The results showed that when the pH was7.5,the coagulation effect of 0.4 g/L polyaluminum chloride and 20 mg/L polyacrylamide was the best;When the hydraulic retention time of the firstlevel AO tank,the second-level A tank and the second-level O tank were respectively 48 h,48 h and 24 h,the effluent COD and NH4+-N removal rates were as high as 83.85%and 94.67%;Using high-throughput sequencing technology to analyze the bacterial communities in the first-level AO reactor in the cascade domestication,it was found that the dominant bacteria phyla were Proteobacteria.The main species in reactor A were CandidatusCompetibacter and OLB14,and the main species in reactor O were Candidatus-Competibacter,SC-I-84 and C10-SB1A.

关 键 词：二级AO 垃圾转运站渗滤液 混凝 生物接触氧化 微生物多样性 

分 类 号：X703[环境科学与工程—环境工程]