矿井水井下原位处理的PRB活性材料组合修复能力研究

针对矿井水地面处理的成本高和占地面积大等问题，提出矿井水井下处理与PRB修复相结合的原位处理方法，通过构建1号（无烟煤和钢渣）、2号（无烟煤和石英砂）、3号（无烟煤和沸石）、4号（无烟煤和钢渣、石英砂、沸石）PRB活性材料柱的动态实验，处理含有COD，NH4-N，PO4-P，Mn 2+，SS污染物的矿井水，研究PRB井下原位处理方法的可行性和有效性。实验结果表明：1~4号柱由于不同的组合材料而对COD，NH4-N，PO4-P，Mn 2+，SS有不同的最好去除率，其中4号柱对COD，NH4-N，PO4-P，Mn 2+，SS的平均去除率分别为59.9%，68.7%，77.9%，80.06%，88.8%，去除效果和渗透性相对较好。综合各项指标，4号柱中无烟煤、钢渣、石英砂、沸石（体积比3∶1∶1∶1）为最佳组合，适于含有机物、氮、磷和重金属离子污染矿井水的井下原位处理。

Repairability of PRB active material combination on in situ mine water

To overcome the problem of high cost and large footprint in treating polluted mine water on surface，a method combining in situ mine water treatment and PRB repair was proposed in this paper.With PRB active materials，Column 1(anthracite coal and steel slag)，Column 2(anthracite coal and quartz sand)，Column 3(anthracite and zeolite)and Column 4(anthracite coal，steel slag，quartz sand and zeolite) were constructed to treat mine water containing COD，NH4-N，PO 4-P，Mn 2+and SS.The experimental results show that the Column 1~4 has different optimal removal rates to COD，NH4-N，PO 4-P，Mn 2+and SS，due to different combination of materials.In Column 4，the average removal rates of COD，NH4-N，PO 4-P，Mn 2+and SS are 59.9%，68.7%，77.9%，80.06% and 88.8% respectively，and also both its removal rates and permeability are high comparing with other columns.As a result，Column 4 is an optimal combination with anthracite coal，steel slag，quartz sand and zeolite(the volume ratio is 3∶1∶1∶1)，which is suitable for repairing and controlling polluted mine water with organics，nitrogen，phosphor and heavy metal ion underground.