UAPB和PRB反应器处理酸性矿井水

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针对酸性矿井水地面处理的成本高、常规处理方法效果差等问题,提出以玉米芯为碳源、铁屑协同生物麦饭石固定颗粒为基质填料的升流式厌氧填料床(UAPB)和可渗透性反应墙(PRB)的井下原位处理方法。试验表明,UAPB与PRB反应器均具有较强的pH值提升能力,但PRB反应器抗污染负荷变化的能力更强,出水OD600值小,TFe去除率高,可达99.9%以上,且在70个孔隙体积数之后,PRB反应器中玉米芯缓释碳源(COD)浓度和SO_4~(2-)还原速率仍较高且稳定,平均值分别为1 136 mg/L和1 256 mg/(L·d),对Mn~(2+)的去除率也高出UAPB反应器15%。可见,PRB硫酸盐还原菌固定颗粒反应器更适合并下原位处理酸性矿井水。 In view of the high cost of surface treatment of acidic mine water and the poor effect of conventional treatment methods, an upflow anaerobic packed bed (UAPB) with corncob as carbon source and iron scrap synergistic biomaterials as matrix packing and In situ downhole treatment of a permeable reaction wall (PRB). The results show that both UAPB and PRB reactors have strong ability of increasing pH value. However, PRB reactor is more resistant to changes of pollution load. The effluent OD600 value is small, and the removal rate of TFe is high, up to 99.9% After a single pore volume, the CODc and SO_4 ~ (2-) reduction rates of corn cob in PRB reactor were still high and stable with the average values ​​of 1 136 mg / L and 1 256 mg / ( L · d), the removal rate of Mn ~ (2+) is also 15% higher than that of UAPB reactor. It can be seen that the PRB sulfate-reducing bacteria immobilized particle reactor is more suitable for treating acidic mine water in situ.
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