鸟粪石沉淀—光合细菌复合序批式生物膜反应器协同处理猪场沼液  

Synergistic treatment of pig biogas slurry by struvite precipitation-photosynthetic bacteria composite SBBR

作　　者：张正红[1] 何文辉[1] 向天勇[1] 单胜道 ZHANG Zhenghong;HE Wenhui;XIANG Tianyong;SHAN Shengdao(College of Agriculture and the Environment,Jiaxing Vocational Technical College,Jiaxing Zhejiang 314036;College of Biological and Chemical Engineering,Zhejiang University of Science&Technology,Hangzhou Zhejiang 310023)

机构地区：[1]嘉兴职业技术学院农业与环境分院,浙江嘉兴314036 [2]浙江科技学院生物与化学工程学院,浙江杭州310023

出　　处：《环境污染与防治》2018年第4期404-408,共5页Environmental Pollution & Control

基　　金：浙江省重点科技创新项目计划(No.2013TD12);嘉兴市科技计划项目(No.2014AY21029);国家国际科技合作专项(No.2014DFE90040)

摘　　要：采用鸟粪石沉淀处理猪场沼液,出水再用光合细菌复合序批式生物膜反应器(SBBR)进一步处理,优化了鸟粪石沉淀的最佳Mg^(2+)∶NH_4^+(摩尔比)和光合细菌复合SBBR的最佳污泥停留时间(SRT)。结果表明:鸟粪石沉淀的最佳Mg^(2+)∶NH_4^+为1.3,COD、氨氮、TP和SS去除率分别可达52.86%、77.16%、83.24%、93.75%;光合细菌复合SBBR的最佳SRT为10d,运行第20天后基本达到稳定,COD、氨氮、TN和TP去除率分别达到87.19%~91.67%、90.18%~95.69%、82.79%~88.85%、74.81%~82.39%,稳定后鸟粪石沉淀—光合细菌复合SBBR对COD、氨氮、TN、TP的总去除率分别达到95.29%、98.39%、95.95%、96.95%以上。The pig biogas slurry was treated by struvite precipitation-photosynthetic bacteria composite SBBR.The effects of Mg2+∶NH+4 in struvite precipitation and sludge retention time(SRT)in photosynthetic bacteria composite SBBR were analyzed.Results showed that the optimum Mg2+∶NH+4 was 1.3,and the optimum SRT was 10 d.The removal rates of COD,ammonia nitrogen,TP and SS were 52.86%,77.16%,83.24%and 93.75%in struvite precipitation,respectively.The photosynthetic bacteria composite SBBR tended to be stable after 20 d,and the removal rates of COD,ammonia nitrogen,TN and TP reached 87.19%-91.67%,90.18%-95.69%,82.79%-88.85%and 74.81%-82.39%,respectively.The total COD,ammonia nitrogen,TN and TP removal rates of struvite precipitation-photosynthetic bacteria composite SBBR were up to 95.29%,98.39%,95.95%and 96.95%,respectively.

关 键 词：鸟粪石 沉淀 光合细菌 活性污泥 序批式生物膜反应器 猪场沼液 

分 类 号：X713[环境科学与工程—环境工程]