煤矸石矿井填充过程中微生物作用对环境的影响

Environment impact caused by the microorganism action in the process of using gangue packed for mine

以义马跃进矿的长焰煤、煤矸石、矿井水为研究对象,在添加接种物的情况下,研究微生物作用的产气量和甲烷含量,同时以硝酸盐氮、氨氮、硫离子、硫酸盐、pH值、金属和有机质为研究指标,分别对发酵液和残渣进行测定.结果表明:煤、煤矸石参与了微生物作用;接种物的加入量与产气量和甲烷含量密切相关,并对硝酸盐氮、氨氮、硫化物、硫酸盐和金属也有一定程度的影响;同时由于微生物厌氧发酵的关系,氨氮严重超标;矸石比例较小的B组对环境的影响略小于矸石比例较大的A组.在进一步研究有机质的转化方向和获取、利用生物气的同时要预防地下水的二次污染.

Measured the quantities of gas and the contents of methane by the microorganism action, and also respectively measured zymotic fluid and residues by NO3 - N, NH4＋ - N, S2- , SO4^2- , the values of pH, metals and the organic matter based on the long-flame coal, gangue, mine water of Yima Yuejin Mine and in the case of adding inoculums. The results show that coal and gangue are involved in the microbial role; the quantity of inoculums is directly related to the quantities of gas and the contents of methane, at the same time it has a certain degree of impact on the contents of NO3 - N, NH4＋ - N, S2- , SO4^2- , and metals; moreover, because of the microbial anaerobic fermentation, the contents of NH3＋ are seriously substandard; overall, the group B which has a smaller proportion of gangue has a less impact to the environment compared to the group A which has a larger proportion of gangue. In the further research into the direction of organic matter and obtaining and using the biogas, we must prevent secondary pollution of groundwater at the same time.