英买力气田污水絮凝处理试验研究

第29卷第6期石油化工应用Vol.29 No.62010年6月PETROCHEMICAL INDUSTRY APPLICATIONJune 2010英买力气田污水絮凝处理试验研究任青云',屈撑囤',刘武',晁宏洲2(1.西安石油大学化学化工学院，陕西省环境污染控制技术与储层保护重点实验室,陕西西安710065;2.中国石油塔里木油田分公司,新疆库尔勒841000)摘要:针对英买 力作业区气田采出污水矿化度高、腐蚀性强、总铁含量高硫化物含量低、细菌含量较低、pH值低的特点,通过研究调整pH值、除铁剂种类及其用量、无机和有机絮凝剂种类及其用量以及加药间隔时间等的研究,对英买力气田污水进行絮凝处理。结果表明:当pH值为7.5、除铁剂加量为25 mg/L、无机絮凝剂加量为80 mg/L.有机絮凝剂加量为2.5 mg/L,有机絮凝剂与无机絮凝剂加药间隔控制在30- 40s时,处理后的污水的含铁量、含油量.Ss含量、腐蚀速率由处理前的18.1-19.5 mg/L.54.9 -64.3 mg/L、256.3-276.9 mgL.0.0897 mm/a分别下降到0.049-0.059 mg/L.2.0~5.5 mg/L、7.2~9.6 mg/L.0.0103 mn/ao关键词:气田污水;絮凝;回注;除铁中图分类号:TE99文献标识码:A文章编号:1673- -5285( 2010 )06 -0012-05Flocculent treatment study on yingmaili gasfieldproducted -waterREN Qingyun' ,QU Chengtun',LU Wu?,CHAO Hongzhou2(1.Key Laboratory of Shanxi Province for Entironment Pollution Control Technology &Reservoir Protection of 0ifield , College of Chemistry and Chemical Engineering, Xi 'anShiyou University, Xian Shanxi 710065 , China; 2.Terimu Oilfield Company of Petrochina,Korla Xinjiang 841000, China)Abstract: The sewage of yingmaili gasfield producted-water has hypersalinity、putrescence、high total iron conter Jlow conten of sulfides and bacteria Jower pH value. The pH, de-ironagent and amount, inorganic and organic flocculating agent and interval of agent additive wereoptimized in the yingmaili gas field -producted water, the results indicated that pH 7.5, the :additive amounts of de -iron agent 25 mg/L,inorganic flocculating agent 80 mgL organicflocculating agent 2.5 mg/L and the interval of agent additive was 30- 40 s. The quality of thetreated water was stable,and iron content dropped from 18.1~19.5 mg/L to 0.049~0.059 mg/L,ss content dropped from 256.3~276.9 mg/L to 7.2~9.6 mg/L,oil dropped from 54.9~64.3 mg/L to 2.0~5.5 mg/L, corrosion rate dropped from 0.0897 mm/a to 0.0103 mm/a, andmet the re- injection water standards of recommended injection water quality.Key words: gasfield producted- water;flocculation;reinjection;de ironing◆收稿日期:2010-04-21基金项目:陕西省"13115”科技创新工程项目(2009ZDKC 61);西安市创新支撑计划-产学研合作促进工程[CXY09013(3)]。作者简介:任青云,女,西安石油大学在读硕士研究生,主要从事石油环境污染与控制技术方面的研究工作。第6期任青云等英买 力气田污水絮凝处理试验研究13塔里木油田英买力地区属于寒武一奥陶系地层表1英买力气田采出水性质分析结果Tablel The result of quality analysis of waste water produced in碳酸盐岩缝洞型储层，其气田污水具有以下特点"，Yingmaili gas feld矿化度高、含铁高和腐蚀速率高,pH值低和细菌含指标结果离子种类.舍量/(mg/L)量低。对于气田污水,国内外多采用回注方式进行处水温/C42-43cr96 664.5~102 912.8理,处理工艺主要是采用混凝沉降、气浮、过滤、精细H.0CO2过滤等单元技术组合的处理流程，并使气田污水中悬浮物含量、含油量等含量达到《气田水回注方法》含油量<(mg/L) 54.9-64.3HCO;793-146.4Ss/(mgL)256.3-276.9Ca27 443.8-8 080.1(SY/T 6596-2004)的要求21。 在上述处理工艺中存总铁(mg/L)18.1-19.5Mg"925.0-1 678.6在以下问题:投加药品剂种类多(主要有混凝剂、杀菌剂,清洗剂.脱氧剂、阻垢剂、缓蚀剂等)而且加量Fe*