浅层气浮处理矿井水工程实践  

Shallow Air Flotation Treatment of Mine Water Engineering Practice

作　　者：王瑾 王世奕 梁桢 李福勤 Wang Jin;Wang Shiyi;Liang Zhen;Li Fuqin(School of Energy and Environmental Engineering,Hebei University of Engineering,Hebei,056038;Hebei Technology Innovation Center of Water Pollution Control and Water Ecological Remediation,Hebei,056038;Hebei Engineering Research Center of Sewage Treatment and Resource Utilization,Hebei,056038)

机构地区：[1]河北工程大学能源与环境工程学院,河北056038 [2]河北省水污染控制与水生态修复技术创新中心,河北056038 [3]污水处理及资源化利用河北省工程研究中心,河北056038

出　　处：《当代化工研究》2024年第3期114-116,共3页Modern Chemical Research

基　　金：河北省自然科学基金项目“矿井水的高效利用研究”(项目编号:E2021402015)。

摘　　要：为解决河北某矿矿井水处理工艺存在的运行效果不稳定、出水水质差、药剂费用高等问题,提出拆除纤维转盘、增加二次沉淀池等改进措施。改进后工艺为“调节(一次混凝)预沉池+(二次混凝)气浮池+二次沉淀池”。实验表明:一次混凝PAC投加50mg/L,二次混凝PAC投加10mg/L,PAM投加0.5mg/L时,效果最好,上清液浊度为1.14NTU。改进后系统运行稳定,药剂费减少30%以上,预沉池、气浮池和二次沉淀池出水浊度分别为33.5~58.1NTU、5.8~11.3NTU、1.9~5.1NTU。二次沉淀池起到良好的稳定水质作用,出水达到矿井水回用和排放相关标准。In order to solve the problems of unstable operation effect,poor quality of effluent water and high cost of pharmaceuticals in the mine water treatment process of a mine in Hebei,improvement measures such as dismantling the fiber turntable and increasing the secondary sedimentation tank are proposed.The improved process is“regulating(primary coagulation)pre-settlement tank+(secondary coagulation)air flotation tank+secondary sedimentation tank”.Experiments showed that:primary coagulation PAC cast 50 mg/L,secondary coagulation PAC cast 10 mg/L,PAM cast 0.5 mg/L,the best effect,the turbidity of the supernatant is 1.14 NTU.The improved system operates stably,the pharmaceutical cost is reduced by more than 30%,and the turbidity of the effluent from the pre-settlement tank,the air flotation tank and the secondary sedimentation tank is 33.5~58.1 NTU,5.8~11.3 NTU,and 1.9~5.1 NTU,respectively.The secondary sedimentation tank plays a good role in stabilizing water quality,and the effluent meets the relevant standards for mine water reuse and discharge.

关 键 词：矿井水 调节预沉 二重混凝沉淀 浅层气浮 

分 类 号：X752[环境科学与工程—环境工程]