矿井水中悬浮物特征及其净化关键技术  

Discussion on the characteristics of SS in mine water and the key technique of purification

作　　者：杨静[1] 李福勤[2] 邵立南[1] 张先[1] 何绪文[1] 徐茂程 

机构地区：[1]中国矿业大学北京化学与环境学院,北京100083 [2]河北工程大学城建学院,河北邯郸056038 [3]烟台市莱山区建设局,山东烟台264003

出　　处：《辽宁工程技术大学学报（自然科学版）》2008年第3期458-460,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(50678172);教育部科学技术研究重点项目

摘　　要：基于解决含悬浮物矿井水净化处理存在的问题,重点分析了矿井水中悬浮物的特征,并对其净化的关键技术进行了探讨。结果表明,我国矿井水中悬浮物低于300mg/l的矿井占近80%,悬浮物中平均88%的粒径在50μm以下,悬浮物的平均密度约1.2-1.3g/cm3,矿井水中悬浮物的ζ电位介于-19.14mv至-30.15mv之间,表现出不同程度的负电性,与混凝剂亲和能力弱,混凝过程中矾花形成困难,混凝沉降效果比较差。为此,混凝反应的水力条件(GT值)和沉淀池的表面负荷是含悬浮物矿井水净化技术的关键,建议反应GT值在10000左右,沉淀池的表面负荷取地表水的0.6～0.8倍。Based on solving the existent problem of mine water with suspended solid（SS） treatment, this paper mostly analyzes the characteristics of SS in mine water and discusses the key technique of purification. The paper shows that coal mine that the SS, whose size is under 300mg/1 in mine water, account for about 80 % in our country. In SS, average 88% granule diameter is under 50μm. The average density of SS is about 1.2-1.3g/cm^3. The ζ potential of SS in mine water is between -19.14mv and -30.15mv.It reveals electronegative characteristic with different degrees, and the appetency with coagulant dosage is weak. It is difficult to form floc in the process of coagulation. The effect of coagulation sedimentation is bad. So the key of mine water with SS depuration technique is hydrodynamic condition of coagulation （GT value） and the surface load of sedimentation tank. It is suggested that the GT value of process showed be about 10000 and the surface load of sedimentation tank be 0.6-0.8 time of the surface water＇s.

关 键 词：矿井水 悬浮物 混凝沉淀 

分 类 号：X523[环境科学与工程—环境工程]