高浓度气田生产废水预处理工艺中试研究  

Pilot Experiment on High Concentration Gasfield Wastewater Pretreatment Process

作　　者：周宁 何化 

机构地区：[1]中国石油工程建设有限公司西南分公司,四川成都610041

出　　处：《天然气与石油》2018年第1期85-89,共5页Natural Gas and Oil

基　　金：国家科技重大专项"大型油气田及煤层气开发"长宁威远页岩气示范工程(2016 ZX 05062-007)

摘　　要：针对气田生产废水高浓度CODcr、油类和高分子有机物处理困难等问题,研制了一套适合天然气行业高浓度气田生产废水预处理工艺,并进行了中试研究。通过考察氧化及沉淀药剂投加量、反应时间、反应温度三种因素以及多工况组合测试,找出了合理的控制参数,证明"催化氧化-絮凝沉淀"预处理工艺在物化处理阶段能有效降解废水中的高分子有机物,使CODcr脱除率稳定在30%以上,废水可生化性B/C值从0.14提高到0.46。"催化氧化-絮凝沉淀"预处理工艺为后续生化处理创造了条件。In view of the issues of difficult treatment of high concentration CODer, oil and polymer organic matter in gas field wastewater, a set of pretreatment process for high concentration gas field wastewater was developed, and pilot-scale study was carried out. The reasonable control parameters were found out by investigating oxidation and precipitation reagent dosage, reaction time, reaction temperature and multi-condition combination test. It was proved that the pretreatment process of ＂ catalytic oxidation-floceulation precipitation＂ could effectively degrade the polymer organics in wastewater during physicochemical treatment, which stabilized removal rate of CODer above 30 % and increased waste water biodegradability B/C value from 0. 14 to 0.46. The pretreatment process of ＂ catalytic oxidation- flocculation precipitation＂ creates conditions for subsequent biochemical treatment.

关 键 词：高浓度气田废水 废水处理 物化预处理 

分 类 号：X741[环境科学与工程—环境工程]