大港羊三木油田外排水处理技术升级应用  

Discussion on Upgrading and Application of External Drainage Treatment Technology in Dagang Yangsanmu Oilfield

作　　者：王云鹏 王端 王建伟[2] 邹晓燕[2] 张津华 Wang Yunpeng;Wang Duan;Wang Jianwei;Zou Xiaoyan;Zhang Jinhua(Quality,Safety and Environmental Protection Department of Dagang Oilfield Company;Oil Production Technology Research Institute of Dagang Oilfield;Dagang Oilfield Bin’gang Petroleum Technology Group Co.,Ltd.)

机构地区：[1]中国石油大港油田公司质量安全环保处 [2]中国石油大港油田采油工艺研究院 [3]中国石油大港油田滨港石油科技集团有限公司

出　　处：《油气田环境保护》2020年第4期28-31,75,共5页Environmental Protection of Oil & Gas Fields

摘　　要：羊三木油田外排采出水处理系统采用高效节能过滤器+微絮凝处理系统+FSBR活性污泥处理系统+高效节能过滤器处理工艺,处理效果无法达到最新指标要求,需要进行升级改造。通过生产情况分析和国内外处理技术调研,优选“高效节能过滤+微絮凝处理+降温+UASB厌氧处理+一级接触氧化+水解池+二级接触氧化+活性炭过滤吸附”相结合的处理工艺,并根据室内试验和现场中试结果,对已建FSBR池维修改造成一级、二级接触氧化池、水解池,并新建冷却塔、UASB反应器、活性炭吸附塔,实现过滤、沉降、厌氧反应、水解、接触氧化、吸附的外排水处理工艺,处理后的外排水满足COD≤50 mg/L,石油类≤1 mg/L,氨氮≤5 mg/L的技术指标。The effluent treatment system of Yangsanmu oilfield adopts the treatment process of high efficiency energy-saving filter+micro flocculation treatment system+FSBR activated sludge treatment system+high-efficiency energy-saving filter,and the treatment effect can not meet the requirements of the latest indicators,so it needs to be upgraded.Based on the analysis of production situation and investigation of treatment technology at home and abroad,the treatment process of“high efficiency and energy saving filtration+micro flocculation treatment+cooling+UASB anaerobic treatment+primary contact oxidation+hydrolysis tank+secondary contact oxidation+activated carbon filtration adsorption”was optimized.According to the results of indoor test and field pilot test,the existing FSBR tank was repaired and transformed into primary and secondary contact oxidation tank Hydrolysis tank,and new cooling tower,UASB reactor and activated carbon adsorption tower are built to realize the external drainage treatment process of filtration,sedimentation,anaerobic reaction,hydrolysis,contact oxidation and adsorption.The treated effluent successfully meets the technical indexes of COD≤50 mg/L,petroleum≤1 mg/L,and ammonia nitrogen≤5 mg/L.

关 键 词：油田采出水 外排水处理 UASB 水解 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程] X741[环境科学与工程—环境工程]