腈纶污水处理厂污染物转化规律分析

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英文篇名：Study on pollutants transformation rules of acrylic fiber manufacturing wastewater in treatment processes 作者：张华 ; 王崇杰 ; 罗臻 ; 刘译阳 英文作者：ZHANG Hua;WANG Chongjie;LUO Zhen;LIU Yiyang;CNPC Research Institute of Safety and Environmental Technology;State Key Laboratory of Petroleum and Petrochemical Pollution Control and Treatment;Environmental Monitoring Station,CNPC Daqing Refining & Chemical Company; 关键词：腈纶污水 ; 生化处理工艺 ; 污染物转化 英文关键词：acrylic ?ber manufacturing wastewater;;biochemical treatment process;;pollutant transformation 中文刊名：化工环保 英文刊名：Environmental Protection of Chemical Industry 机构：中国石油安全环保技术研究院有限公司;石油石化污染物控制与处理国家重点实验室;中国石油大庆炼化公司环境监测站; 出版日期：2018-10-25 16:23 出版单位：化工环保 年：2019 期：01 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) 语种：中文; 页：26-31 页数：6 CN：11-2215/X ISSN：1006-1878 分类号：X783

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 ?ber manufacturing plant were assessed,and the pollutants transformation rules were investigated. The results showed that after the ?rst-stage biochemical treatment,the removal rate of COD,TOC and BOD5 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 acidlike 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 ?rst-stage biochemical treatment con?rmed the limited biodegradability,resulting in the ineffective second-stage biochemical treatment.

引文

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