论文部分内容阅读
2003年4月,徐州矿务集团韩桥煤矿-330m水平泵房出现严重的结垢。首先用X-衍射分析仪对水垢成分进行测试,然后对矿井水的水化学和微生物特征分3个不同时段(2003年4月、2003年10月、2004年4月)采样、测试,并利用水质模拟软件PHREEQC计算方解石、文石、白云石的饱和指数。通过综合对比分析,对水泵结垢原因进行了追踪研究。结果表明,水垢主要成分以碳酸盐水垢为主,微生物主要为球菌和杆菌,水泵结垢与微生物无直接关系;矿井停采前,-330m水平水质类型为SO4-Ca-Mg,SO2-4质量浓度高达1613.90mg/L,pH=6.71,矿井停采后,2003年4-10月,-330m东巷水质类型变化为SO4-HCO3-Ca-Mg,其中HCO-3、(K++Na+)质量浓度明显上升,pH值明显上升,尤其在2003年4月达到最高,为8.36。2003年10月-2004年4月,水质类型又变化为SO4-Ca-Mg,pH值下降为6.35～7.02。综合分析认为,矿井地面某造纸厂碱性污水渗漏引起pH值升高是结垢的主要原因。
April 2003, Xuzhou Mines Group Hanqiao -330m pumping station level serious scale. Firstly, the scale components were tested by X-ray diffraction analyzer. Then, the water chemistry and microbial characteristics of mine water were sampled, tested and utilized in three different time periods (April 2003, October 2003 and April 2004) The water quality simulation software PHREEQC calculates the saturation index of calcite, aragonite and dolomite. Through a comprehensive comparative analysis, the causes of the pump scaling were traced. The results showed that the main components of scale were carbonate scale, the main microorganisms were coccus and bacillus, and the scaling of water pump was not directly related to microorganisms. Before the mine was shut down, the water quality at -330 m level was SO4-Ca-Mg and SO2-4 After the mine was stopped, the type of water quality at the east lane changed from April to October in 2003 to SO4-HCO3-Ca-Mg, of which HCO-3 and (K + + Na +) The mass concentration obviously increased and the pH value increased obviously, especially in April 2003, which reached to 8.36. From October 2003 to April 2004, the water quality changed to SO4-Ca-Mg, and the pH dropped to 6.35-7.02 . Comprehensive analysis shows that the mine floor, a paper mill alkaline leachate caused by the pH value is the main reason for scaling.