含悬浮物矿井水预处理系统运行优化分析研究

Study on operation optimization of the pretreatment system for suspended solids-containing coal mine water

为提高含悬浮物矿井水预处理能力并减少后续膜处理单元的污堵,分析了某矿区9个典型煤矿含悬浮物矿井水预处理系统中存在的运行问题,提出了优化措施。结果表明:通过工艺优化、构筑物改造、设备智能化升级和药剂优选等措施,矿井水预处理效率和稳定性有所提高,悬浮物平均去除率提高了8%~15%;优化后的预处理系统药剂成本为0.2~0.4元/t,比优化前下降了5%~20%;综合运行成本下降了3%~25%。

In order to improve the pretreatment capacity of mine water containing suspended solids and reduce the pollution and blockage on the subsequent membrane system,the operation problems existing in the mine water pretreatment systems of 9 typical coal mines in a mining area were analyzed,and the optimization measures were put forward.The results showed that the treatment efficiency and effluent stability of the mine water pretreatment systems were improved through some measures such as process optimization,structure transformation and improvement,equipment intelligent upgrade,and reagent optimization.The average removal(%)of suspended solids in effluent was increased by 8%~15%.The operating cost of the optimized pretreatment system was reduced to 0.2~0.4 yuan/t,which was 5%~20%lower than that before optimization.The comprehensive operating cost was decreased by 3%~25%.