UASB-O/A/O组合工艺对规模化养猪场废水的生物脱氮除磷研究  

BIOLOGICAL NITROGEN AND PHOSPHORUS REMOVAL FROM LARGE SCALE PIGGERY WASTEWATER BY UASB-O/A/O COMBINED PROCESS

作　　者：夏宏生 陈师楚 

机构地区：[1]广东水利水电职业技术学院,广州510635 [2]佛山市弘骏水处理设备有限公司,广东佛山528225

出　　处：《环境工程》2018年第1期11-14,36,共5页Environmental Engineering

基　　金：广东省水利科技创新项目(2016-05)

摘　　要：为了高效实现猪场养殖废水生物脱氮除磷,报道了一种新型生物处理工艺,即上流式厌氧污泥床(UASB)-好氧/缺氧/好氧。结果表明:该工艺能够有效地去除猪场养殖废水中的化学需氧量(COD)、总氮和总磷,出水满足GB 18596—2001《畜禽养殖业污染物排放标准》。UASB段对COD去除率为80%左右,而对氨氮和总磷的去除无贡献。第1段好氧段去除总磷的效率为88.2%。缺氧区NO_2^--N和NO_3^--N的去除率分别高达96.6%和97.3%。将30%原水直接加入缺氧段可解决缺氧段进水碳源不足的问题,达到了良好的生物脱氮效果。微生物种群结构分析表明,Betaproteobacteria是反应体系中组分最多的功能微生物,其最大比例约占63%。In order to effectively realize the biological nitrogen and phosphorus removal from piggery wastewater,a new type of biological treatment process,namely upflow anaerobic sludge bed（UASB）-aerobic/anoxic/aerobic,was proposed.The results showed that the process could effectively remove chemical oxygen demand（COD）,total nitrogen and total phosphorus in the pig farm wastewater,and the effluent met the ＂Emission Standard for Livestock and Poultry Breeding Industry＂（GB 18596—2001）.Further study found that the UASB stage achieved COD removal rate of about 80%,while did not contribute to the removal of ammonia and total phosphorus.The removal efficiency of total phosphorus in the first aerobic stage was 88.2% at the first aerobic phase.The removal efficiencies of NO_2^--N and NO_3^--N in the anoxic zone were 96.6% and 97.3%,respectively.Adding 30% of the raw water into the anoxic stage directly solved the problem of insufficient carbon source and achieved a higher biological nitrogen removal.Microbial population analysis showed that Betaproteobacteria was the most functional microbes in the reaction system,with a maximum proportion of about 63%.

关 键 词：猪场养殖废水 脱氮除磷 UASB 微生物种群 

分 类 号：X713[环境科学与工程—环境工程]