高盐稠油污水达标外排强化处理中试研究  

Pilot Study on Strengthening Treatment of High Salt and Heavy Oil Wastewater with Standard Discharge

作　　者：王其仓 杜易 李坤 李京京 徐军 WANG Qicang;DU Yi;LI Kun;LI Jingjing;XU Jun(Jiangsu Fangyang Water Co.,Ltd.,Lianyungang 222000,China;China Bluestar Lehigh Engineering Corp.,Lianyungang 222000,China)

机构地区：[1]江苏方洋水务有限公司,江苏连云港222000 [2]中蓝连海设计研究院有限公司,江苏连云港222000

出　　处：《环境保护科学》2019年第2期48-52,共5页Environmental Protection Science

摘　　要：针对某油田稠油污水盐度高、有机成分复杂、可生化性低、毒性大等特征,开展"强化混凝预处理+高盐生物强化+臭氧-BAF深度净化"综合处理中试。结果表明:通过混凝药剂复配、耐盐微生物强化及不同工艺的协同优化,构建了稳定高效的高盐稠油污水强化处理系统;在进水TDS 28 500～31 200 mg/L、COD 821～875 mg/L、石油类44～48 mg/L、挥发酚43～56 mg/L、SS 133～146 mg/L条件下,处理出水COD 38～43 mg/L、石油类0.10～0.13 mg/L、挥发酚0.01～0.04 mg/L、SS 2～4 mg/L,外排水质远远满足辽宁省污水综合排放标准(DB21/1627—2008)一级要求,为稠油污水达标排放工程化设计提供了技术依据。In view of the characteristics of heavy oil wastewater in an oilfield which has high salinity,complex organic composition,low biodegradability and high toxicity,the pilot test of “enhanced coagulation pretreatment & high salt biological treatment & ozone-BAF process ” is carried out.The results show that a stable and efficient wastewater treatment system to deal with high salinity and heavy oil has been established through the mixture of coagulants,the strengthening of salt-tolerant microorganisms and the synergistic optimization of different processes.Under the conditions of influent TDS 28 500~31 200 mg/L, COD 821~875 mg/L,petroleum 44~48 mg/L,volatile phenol 43~56 mg/L,SS 133~146 mg/L,the effluent quality can meet the first level requirements of Liaoning Comprehensive Sewage Discharge Standard (DB21/1627-2008) with the effluent COD 38~43 mg/L,petroleum 0.10~0.13 mg/L,volatile phenol 0.01~0.04 mg/L,SS 2~4 mg/L.It provides the technical basis for the engineering design of heavy oil wastewater discharge to meet the standard.

关 键 词：稠油污水 强化混凝 高盐生化 臭氧-BAF 

分 类 号：X703[环境科学与工程—环境工程]