石化污水系统改造项目试验研究
2016-05-14张花彭芸喻敏霞
张花 彭芸 喻敏霞

摘要:为了满足《石油炼制工业污染物排放标准 GB31570-2015》的要求,实现污水达标外排,减少污水对环境造成的污染,某石化企业需对污水处理系统进行改造,在现有流程后增设深度处理单元,实现总氮的达标排放,并起到COD达标的把关作用。本试验采用了高效生物膜脱氮、臭氧催化氧化组合工艺处理某石化污水处理场的出水,着重从工程项目概述、试验方案以及试验结果等方面进行概述。为后期污水处理系统提标改造工程提供相关指导建议。
关键词:含油污水;污水提标改造;高效生物膜脱氮;臭氧催化氧化
中图分类号:X703 文献标识码:B 文章编号:2095-672X(2016)05-0059-03
DOI:10.16647/j.cnki.cn15-1369/X.2016.05.014
Experimental study on reformation project of petrochemical wastewater system
Zhang Hua 1,PengYun 1,Yu Minxia 2
(1.Zhuzhou Institute of environmental protection,Hunan 412007;
2.Changsha Environmental Protection College,Hunan 410004)
Abstract:In order to meet the requirements of (the petroleum refining industry standards for the discharge of pollutants GB31570-2015), make sewage efflux meet the standard and reduce the environmental pollution caused by the sewage, need of the sewage treatment system of certain petrochemical enterprises is needed to be improved. Meanwhile, depth processing unit is needed to be added after the existing process so as to achieve the discharging standard of total nitrogen and the COD. This experiment adopts efficient biofilm removal nitrogen process and ozone-oxidation combined process to treat effluent of a petrochemical wastewater treatment, this paper will focus on the project overview, test scheme and the results of experiments, and provide guidance and advice to the improvement project of the sewage treatment system.
Keywords: Oily sewage;Sewage extraction;High efficiency biological membrane;Ozone catalytic oxidation
1 项目概述
目前含油系列污水处理系统采用粉末活性炭/湿式氧化再生处理工艺,运行状态良好,水质满足现有排放标准,运行较为稳定。但设计时未考虑总氮排放限值,工艺流程无脱总氮功能。WAR系统开工、硝酸清洗等直接增加污水中硝态氮,由于无反硝化工艺,导致污水中总氮超标。目前含油系列总排口总氮平均41.7mg/L,最大102mg/L。不能满足《石油炼制工业污染物排放标准》(GB31570-2015)的要求(总氮特别排放限值30mg/L)。
为了贯彻“可持续发展”战略和“清洁生产”政策,实现含油污水达标外排,减少污水对环境造成的污染,拟对含油污水处理系统进行提标改造,在现有流程后增设深度处理单元,实现总氮的达标排放,并起到COD达标的把关作用。
2 项目试验方案
本试验采用高效生物膜脱氮、臭氧催化氧化组合工艺处理武汉石化含油污水处理系统澄清池出水。……
