多重混凝沉淀处理高悬浮物矿井水试验及应用  

Experiment and application of multiple coagulation and sedimentation treatment of mine water with high suspended solids

作　　者：李福勤 豆硕超 高珊珊 薛甜丽 代其彬 田莉 LI Fuqin;DOU Shuochao;GAO Shanshan;XUE Tianli;DAI Qibin;TIAN Li(College of Energy and Environmental Engineering,Hebei University of Engineering,Handan 056038,China;Jizhong Energy Fengfeng Group Co.,Ltd.,Handan 056001,China)

机构地区：[1]河北工程大学能源与环境工程学院,河北邯郸056038 [2]冀中能源峰峰集团有限责任公司,河北邯郸056001

出　　处：《煤炭工程》2023年第4期102-106,共5页Coal Engineering

基　　金：河北省自然科学基金矿山联合基金资助项目(E2021402015)。

摘　　要：针对冀中能源峰峰集团大淑村矿高悬浮物矿井水处理混凝剂投加量大,混凝沉淀效果差等问题,研究了混凝剂种类、絮凝剂种类、混凝次数、混(絮)凝剂投加方式及投加量、反应转速等因素对矿井水悬浮物去除效果的影响。结果表明:最佳混凝剂为PAC,最佳絮凝剂为CPAM,混凝次数为两次,最佳投加方式及投加量为一次投加70 mg/L PAC和0.3 mg/L PAM,二次投加20 mg/L PAC和0.3 mg/L PAM,PAC投加量较常规混凝减少了25%,最佳转速为快搅210 r/min,慢搅60 r/min,最佳条件下出水浊度降到1.39 NTU,浊度去除率可达99%以上。工程应用表明:采用二重混凝沉淀工艺处理高悬浮物矿井水,对悬浮物和浊度的去除效果显著,出水水质稳定达标,节省了部分水资源费和投药成本,具有良好的经济效益和环境效益。In view of the large coagulant dosage and poor coagulation and sedimentation effect of high suspended solids mine water treatment in Dashucun Mine,multiple coagulation and sedimentation processes were used to study the effects of coagulant type,flocculant type,coagulation times,coagulant(flocculant)dosing method and dosage,reaction speed and other factors on the removal of suspended matter in mine water.The results showed that the best coagulant was PAC,the best flocculant was CPAM,the coagulation times were twice,the best dosing method and dosage was 70 mg/L PAC and 0.3 mg/L PAM for the first dosing,20 mg/L PAC and 0.3 mg/L PAM for the second dosing,the dosage of PAC was reduced by 25%compared with the conventional coagulation,the best stirring speed was 210 r/min for fast stirring and 60 r/min for slow stirring.Engineering applications show that,the dual coagulation and sedimentation process is effective for high suspended mine water treatment,the removal of suspended solids and turbidity effect is significant,the effluent water quality is stable and up to standard,which saves water resources and agent cost,and provides favorable economic and environmental benefits.

关 键 词：多重混凝沉淀 高悬浮物 矿井水 浊度 

分 类 号：TD741[矿业工程—矿井通风与安全]