钻井泥浆废水混凝处理实验研究  

Study on the coagulation treatment of drilling mud wastewater

作　　者：于冬冬 钱雅洁 刘保江[2] 薛罡[1] 高品[1] Yu Dongdong;Qian Yajie;Liu Baojiang;Xue Gang;Gao Pin(College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China;College of Chemistry,Chemical Engineering and Biotechnology,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]东华大学化学化工与生物工程学院,上海201620

出　　处：《工业水处理》2020年第5期56-59,共4页Industrial Water Treatment

基　　金：广西创新驱动发展专项资金项目(桂科AA17204076)。

摘　　要：以天津某钻井作业场地泥浆废水为研究对象,研究了不同混凝剂(FeSO4、PAC、PFS)、混凝剂投加量、初始pH,助凝剂PAM的投加对混凝处理后上清液浊度、TOC和泥浆沉降比的影响,优化确定了混凝处理的最佳工艺参数。结果表明,PAC对泥浆废水混凝处理的效果优于FeSO4和PFS,当PAC投加量为200 mg/L,废水初始pH为10.0时,混凝处理静置30 min后,上清液浊度可降至38.3 NTU,TOC去除率可达91.5%,处理药剂成本约为0.52元/t,具有较好的应用可行性。此外,虽然PAM的投加能够降低泥浆沉降比,但会造成上清液浊度升高。In this study,the effects of different coagulants(FeSO4,PAC,and PFS),dosage of coagulant,initial pH,and PAM on the supernatant turbidity,total organic carbon(TOC),and mud settling ratio were experimentally investigated using mud wastewater from a practical drilling site in Tianjin Province. The process parameters were optimized.The results showed that the coagulation performance by PAC was better than those by FeSO4 and PFS. As the PAC dosage was 200 mg/L and the initial p H was 10.0,the supernatant turbidity was reduced to 28.3 NTU and the removal of TOC was 91.5% after settling for 30 min. Based on the economic analysis,the cost of PAC is about 0.52 yuan/m3,which has a favorable feasibility of application. Moreover,the addition of PAM could reduce the mud settling ratio,but increase the supernatant turbidity.

关 键 词：钻井废水 混凝处理 聚合氯化铝 浊度 总有机碳 

分 类 号：X703[环境科学与工程—环境工程]