畜禽养殖废水处理技术研究
Research on Livestock and Poultry Breeding Wastewater Treatment Technology
张青 1张勋 1张强 1董献彬 1孔殿超 1张静1
作者信息
- 1. 安徽环境科技集团股份有限公司,安徽合肥 230088
- 折叠
摘要
针对畜禽养殖废水开展小试及中试试验,并对氨氮吹脱条件进行优化.氨氮吹脱试验结果表明:氨氮吹脱最理想的pH值为11,气液比为400:1,吹脱时间宜为1 h,在理想状态吹脱效率达到86.81％.通过畜禽养殖废水开展小试及中试试验,分别检测进出水水质指标,结果表明:畜禽养殖废水小试装置对废水中COD去除率在93％以上、氨氮去除率在92％以上、TP去除率在89％～94％;畜禽养殖废水中试装置对废水中COD的去除率可达到95％以上、氨氮去除率在95％以上,TP去除率在90％以上,整体出水指标均达到排放标准,表明"吹脱+AO生化处理+MBR膜法+化学除磷"工艺可有效的处理畜禽养殖废水.
Abstract
Small-scale and pilot-scale experiments were carried out for livestock and poultry breeding wastewater,with optimization of the ammonia nitrogen stripping conditions.The results of the ammonia nitrogen stripping ex-periment indicate that the most ideal pH value for ammonia nitrogen stripping is 11,with a gas-to-liquid ratio of 400:1,and the optimal stripping time should be 1 hour,achieving a stripping efficiency of up to 86.81％under i-deal conditions.By carrying out pilot and medium-scale experiments on livestock and poultry breeding wastewater,the water quality indicators of influent and effluent were measured respectively.The research findings show that the small-scale pilot unit for livestock and poultry breeding wastewater can achieve a removal rate of o-ver 93％for COD,over 92％for ammonia nitrogen,and between 89％～94％for TP;the medium-scale pilot unit can achieve a removal rate of over 95％for COD,over 95％for ammonia nitrogen,and over 90％for TP.The o-verall effluent indicators meet the discharge standards,indicating that the"stripping+AO biochemical treatment+MBR membrane method+chemical phosphorus removal"process can effectively treat livestock and poultry breeding wastewater.
关键词
畜禽养殖废水/氨氮吹脱/小试试验/中试试验Key words
livestock and poultry breeding wastewater/ammonia nitrogen stripping/small-scale test/pilot test引用本文复制引用
出版年
2024
NETL
NSTL
万方数据