稠油废水深度处理中试研究  

Pilot Study on Advanced Treatment of Heavy Oil Wastewater

作　　者：仝坤 谢加才 刘杰[3] 王东[3] 曾魏[3] 张皓[3] Tong Kun;Xie Jiacai;Liu Jie;Wang Dong;Zeng Wei;Zhang Hao(State Key Laboratory of Petroleum Pollution Control;CNPC Research Institute of Safety&Environment Technology;PetroChina Liaohe Oil Field)

机构地区：[1]石油石化污染物控制与处理国家重点实验室 [2]中国石油集团安全环保技术研究院有限公司 [3]中国石油辽河油田公司

出　　处：《油气田环境保护》2020年第6期6-10,67,共6页Environmental Protection of Oil & Gas Fields

基　　金：《中国石油低碳与清洁发展关键技术研究及应用》(No.2016E-1203)。

摘　　要：为解决稠油废水达标排放问题,构建了5 m^3/h中试实验装置,以经过除油、浮选和过滤预处理的富含溶解性有机化合物、氮磷缺乏的低浓度难生化稠油废水为原水,开展了半饱和褐煤活性焦预吸附-生物降解-活性焦吸附、活性焦吸附-生物降解-臭氧催化氧化、臭氧催化预氧化-生物降解-臭氧催化氧化3种不同组合工艺深度处理稠油废水研究。实验各运行30 d。结果表明:在确保处理后水质满足辽宁省DB 21/1627—2008《污水综合排放标准》的条件下,3种工艺成本均可控制在6元/m^3以内,半饱和褐煤活性焦预吸附-生物降解-活性焦吸附工艺处理效果最好,成本最低,仅为4.31元/m^3。采用吸附生化出水且尚未饱和的活性焦吸附原水,既提高了活性焦的利用率,也降低了生化降解的负荷,为稠油污水处理厂深度处理达标外排工程建设提供了技术依据。To meet the stringent discharge standards,a 5 m^3/h field pilot study was conducted to treat heavy oil wastewater that has rich dissolved recalcitrant organic compounds and low nutrient of nitrogen and phosphorus.The wastewater was pretreated by oil removing,flotation and filtration processes.Three kinds of combined process have been operated for advanced treatment of heavy oil wastewater,which are half saturated lignite activated coke pre-adsorption-biological treatment-lignite activated coke adsorption,lignite activated coke adsorption-biological treatment-ozone catalytic oxidation,and ozone catalytic oxidation-biological treatment-ozone catalytic oxidation.Each experiment has been lasted for 30 days.Experiment result indicates that the cost of all three processes can be controlled under 6.0 yuan/m^3(RMB),and the treatment result can meet the standard discharge.The process of half saturated lignite activated coke pre-adsorption-biological treatment-lignite activated coke pre-adsorption has the best treatment effect and the lowest cost,which is only 4.31 yuan/m^3(RMB).In this study,we use the half saturated lignite activated coke that had adsorbed the biological process effluent to adsorb raw water.This method not only improves the utilization ratio of active coke,but also reduces biological process load.On the whole,it will provide a technical basis for the construction of heavy oil wastewater advanced treatment plant.

关 键 词：稠油废水 生物降解 褐煤活性焦 臭氧催化氧化 

分 类 号：X74[环境科学与工程—环境工程]