青平川污水处理站油田污水处理工艺研究

发布时间：2018-07-07 12:42

本文选题：污水处理站 + 含油污水　；参考：《西安石油大学》2015年硕士论文

【摘要】：本论文根据青平川污水处理站污水水质特性,以提高青平川污水处理站污水回注处理效果及腐蚀、结垢控制为目标,通过污水综合处理工艺研究、系列处理药剂的优化,实现污水处理、防腐、阻垢的技术集成。完成了现场现状调查,得出处理效果不佳的原因;进行了破乳剂体系初选;进行了水处理工艺技术与流程研究,通过加入除硫杀菌剂和适当提高污水的pH值,控制溶解氧的量,提高HCO 3-、S 2-的去除率,抑制水中细菌的繁殖来控制腐蚀;通过适当提高污水的pH,适当降低水中Ca 2+的浓度,提高Fe离子的去除率,利用生成的絮体诱CaCO 3的生成并通过絮体的吸附过程除去生成的CaCO 3,从而降低污水的结垢量。最终得出结论:污水pH调节为7.5 PA C加量为80mg/L、有机絮凝剂加量为2mg/L、无机与有机絮凝剂加药间隔为30s,在该条件下,处理后水的悬浮物含量、含油量可降低到3.0mg/L以下。为了确保注入水的水质、确保注水开发过程的正常进行,可将水质控制在悬浮物含量!3.0 mg/L;含油量!5.0mg/L。选用的处理流程为:集油站脱水来水"1000m3除油罐(1具)"加药(除铁杀菌剂、絮凝剂等)"5m3反应罐(2具,并联)"沉降罐(2具500m 3)"纤维球过滤器+石英砂过滤器串联过滤"清水罐(1具,200m3)"外输。
[Abstract]:According to the characteristics of sewage quality in Qingping Chuan sewage treatment Station, the purpose of this paper is to improve the treatment effect, corrosion and scaling control of sewage at Qingping Chuan sewage treatment Station. Through the study of comprehensive treatment process of sewage, the optimization of series of treatment agents is carried out. Realize the technology integration of sewage treatment, anticorrosion and scale inhibition. The field investigation was completed, and the reasons for the poor treatment effect were obtained; the demulsifier system was selected; the technology and process of water treatment were studied; the amount of dissolved oxygen was controlled by adding desulphurizing fungicides and properly increasing the pH value of sewage. By increasing the removal rate of HCO _ 3-S _ 2- and inhibiting the propagation of bacteria in water to control corrosion, the removal rate of Fe ~ (2 +) can be improved by properly increasing the pH of wastewater, decreasing the concentration of Ca _ 2 in water and increasing the removal rate of Fe ~ (2 +). The formation of Caco _ 3 was induced by the generated floc and the Caco _ 3 was removed by the adsorption process of the floc, thus reducing the fouling amount of sewage. Finally, it is concluded that the pH of wastewater is adjusted to 7.5 PA / L, the amount of organic flocculant is 2 mg / L, the interval between inorganic and organic flocculant is 30 s. Under this condition, the content of suspended matter and oil content of treated water can be reduced to less than 3.0 mg / L. In order to ensure the water quality of injected water and ensure the normal development of water injection, the water quality can be controlled at 3.0 mg / L of suspended matter content and 5.0 mg / L of oil content. The treatment process is as follows: water from dehydration station, "1000m3 oil tank (1)" and "5m3 reaction tank (2)" (iron fungicide, flocculant, etc.), In parallel) "sedimentation tank (2 (500m ~ 3)" fiber ball filter quartz sand filter series filtration "clear water tank (1 / 200 m ~ 3)" is carried out.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X741

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