腈纶污水处理厂污染物转化规律分析  

Study on pollutants transformation rules of acrylic fiber manufacturing wastewater in treatment processes

作　　者：张华[1,2] 王崇杰 罗臻 刘译阳 ZHANG Hua;WANG Chongjie;LUO Zhen;LIU Yiyang(CNPC Research Institute of Safety and Environmental Technology,Beijing 102206,China;State Key Laboratory of Petroleum and Petrochemical Pollution Control and Treatment,Beijing 102206,China;Environmental Monitoring Station,CNPC Daqing Refining & Chemical Company,Daqing 163411,China)

机构地区：[1]中国石油安全环保技术研究院有限公司,北京102206 [2]石油石化污染物控制与处理国家重点实验室,北京102206 [3]中国石油大庆炼化公司环境监测站,黑龙江大庆163411

出　　处：《化工环保》2019年第1期22-27,共6页Environmental Protection of Chemical Industry

基　　金：石油石化污染物控制与处理国家重点实验室HSE实验新方法研究课题项目(2016D-5006-08);水体污染控制与治理科技重大专项(2017ZX07402-002-02)

摘　　要：对某腈纶污水处理厂的现有处理工艺进行了评估,考察了污染物的转化规律。结果表明,经一级生化处理后,废水中的COD、TOC和BOD_5去除率分别为51.1%、32.1%和98.1%,但二级生化处理对COD和TOC的去除没有贡献。一级生化处理过程中氨化作用显著,有机氮逐渐向氨氮和有机胺转化,含氰基的大分子逐渐降解为较小的分子,且可见光区类富里酸荧光物质向类腐殖酸荧光物质、紫外区类富里酸荧光物质转化,同时生化出水中新增溶解性微生物代谢产物。但一级生化出水中碳氮比很低,几乎没有可生化性,导致二级生化处理效果不佳。The existing wastewater treatment processes of an acrylic fiber manufacturing plant were assessed , and the pollutants transformation rules were investigated. The results showed that after the first-stage biochemical treatment , the removal rate of COD , TOC and BOD 5 in wastewater was 51.1 %, 32.1 % and 98.1 %, respectively , while the second-stage biochemical treatment had no contribution to removal of COD and TOC. It was found that an evident ammonification occurred in the first-stage biochemical treatment , where organic nitrogen transformed to ammonia nitrogen and organic amines , and the macromolecules with cyanogroup gradually degraded to smaller molecules , and the furic acid-like fluorescent substances in visible region were converted to humic acid-like and furic acid-like fluorescent substances in ultraviolet region , and new soluble microbial metabolites were found in the effluent. However , a low ratio of C to N in the first-stage biochemical treatment confirmed the limited biodegradability , resulting in the ineffective second-stage biochemical treatment.

关 键 词：腈纶污水 生化处理工艺 污染物转化 

分 类 号：X502[环境科学与工程—环境工程]