| 煤基复合絮凝剂对高浊度高矿化度矿井水的絮凝效果研究 |
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| 引用本文： | 蒋斌斌,高昊,杜坤,宋振宇,赵茜阳,张凯. 煤基复合絮凝剂对高浊度高矿化度矿井水的絮凝效果研究[J]. 矿业科学学报, 2020, 5(6): 681-686. DOI: 10.19606/j.cnki.jmst.2020.06.011 |
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| 作者姓名： | 蒋斌斌 高昊 杜坤 宋振宇 赵茜阳 张凯 |
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| 作者单位： | 1中国矿业大学(北京)化学与环境工程学院,北京100083;2煤炭开采水资源保护与利用国家重点实验室,北京100011 |
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| 基金项目： | 中央高校基本科研业务费专项;中国矿业大学(北京)项目;国家重点研发计划;国家重点实验室开放基金 |
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| 摘 要： | 煤矿分布式地下水库在神东地区应用取得显著成果,宁东地区已开始论证其可行性,但宁东地区矿井水多为高浊度高矿化度矿井水,需要对水库入水进行预处理。本文采用以粉煤灰为原料,通过与聚丙烯酰胺（PAM）、聚合氯化铝（PAC）、壳聚糖混合得到处理高浊度高矿化度矿井水的絮凝剂,试验对比了粉煤灰基复合絮凝剂和未加粉煤灰絮凝剂的絮凝效果,并探究了粉煤灰基絮凝剂的影响因素,确定了最佳投加量和试验条件。实验结果表明:① 5个处理组中对矿井水的处理效果依次是:PAM+PAC+壳聚糖+粉煤灰>PAM+PAC+壳聚糖>PAM+PAC>PAM>PAC;② 粉煤灰基复合絮凝剂的最佳絮凝条件为温度25℃、pH值7、搅拌强度220 r/min、搅拌时间20 min;③ 在最佳条件下,复合絮凝剂对矿化度、悬浮物、钙离子、总硬度和硫酸根的去除率分别为1216%、9804%、8057%、7786%和9544%;④ 粉煤灰基复合絮凝剂作为地下水库处理高浊度高矿化度矿井水预处理絮凝剂是可行的。本研究为地下水库进水的絮凝等预处理提供理论依据和技术支撑。
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| 关 键 词： | 矿井水 絮凝 粉煤灰综合利用 高浊度 高矿化度 |
Research on flocculation effect of fly ash composite on high turbidity and high salinity mine water |
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| Affiliation: | 1School of Chemical & Environmental Engineering,China University of Mining & Technology Beijing,Beijing 100083,China;2State Key Laboratory of Water Resources Protection and Utilization in Utilization in Coal Mining,Beijing 100011,China |
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| Abstract: | Significant results have been achieved in the application of distributed underground water reservoirs inShendong areaNingdong area has begun to demonstrate its feasibilityHowever,the mine water in Ningdong area is mostly of high turbidity and high salinity,so the pre treatment of the reservoir water is requiredThe experiment compares the flocculation effect of fly ash based composite flocculant and unfilled coal ash flocculant,and explores the influence factors of fly ash based flocculant,and determines the optimal dosage and test conditionsIn view of the characteristics of high turbidity and high salinity mine water,this experiment,using fly ash as raw material,to obtain high turbidity and high ore by mixing it with polyacrylamide（PAM）,polyaluminum chloride（PAC） and chitosan,gets flocculants for treating high turbidity and high salinity mine waterThe experiment compares the flocculation effect of fly ash based composite flocculant and unfilled coal ash flocculant,and explores the influencing factors of fly ash based flocculant,and determines the optimal dosage and test conditionsThe experimental results show that:1The treatment effect of mine water in the five treatment groups is:PAM+PAC+chitosan+fly ash >PAM+PAC+chitosan > PAM+PAC>PAM>PAC;2The optimum condition of fly ash composite flocculant in temperature is 25° C,pH 7,stirring strength 220 r / min,stirring time 20 min;3Under the optimal conditions,the removal rates of salinity,suspended solids,calcium ions,total hardness and sulfate by composite flocculants are 1216%,9804%,8057%,7786% and 9544%;4It is feasible to use fly ash based composite flocculant as pretreatment flocculant for the treatment of high salinity high suspended solid water in the groundwater reservoirThis article provides experimental theoretical basis and technical support for the pretreatment of flocculation in the groundwater reservoir. |
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