桑树湾煤矿酸性废水去除金属离子研究  

Study on Removal of Metal Ions in Acidic Wastewater from Sangshuwan Coal Mine

作　　者：周坤强 宛鹤[1] 张崇辉[1] 邓强[2] 刘飞[3] ZHOU Kunqiang;WAN He;ZHANG Chonghui;DENG Qiang;LIU Fei(School of Resources Engineering,Xi'an University of Architecture and Technology;Guizhou General Laboratory of Geology and Mineral Resources;Jinduicheng Molybdenum Co.,Ltd.)

机构地区：[1]西安建筑科技大学资源工程学院,陕西省西安市碑林区710000 [2]贵州省地质矿产中心实验室 [3]金堆城钼业股份有限公司

出　　处：《现代矿业》2022年第3期21-23,共3页Modern Mining

基　　金：贵州省地质矿产勘查开发局地质科研项目(编号:黔地矿科合〔2019〕27号)。

摘　　要：为了有效去除废水中的金属离子,针对桑树湾煤矿酸性废水中金属离子超标的问题,使用中和—沉淀—絮凝法进行去除,在其他条件一定的情况下,通过正交试验着重研究了预氧化时间、pH值调整剂用量、沉淀剂用量对Fe、Mn去除率的影响,确定该工艺的最佳工艺参数及影响Fe、Mn去除率的主要因素。试验结果表明:预氧化时间对酸性废水中Fe去除率影响显著,沉淀剂用量对酸性废水中Mn去除率影响显著;当预氧化时间为3 min,pH值调整剂用量2 g/L,沉淀剂用量150 mg/L时,酸性废水中Fe去除率99.57%,Mn去除率88.26%,指标理想。In order to effectively remove metal ions in wastewater,neutralization-precipitation-floccu⁃lation method was used to remove metal ions aiming at the problem of excessive metal ions in acid wastewa⁃ter of Sangshuwan Coal Mine.The effects of pre-oxidation time,dosage of pH adjuster and dosage of precip⁃itant on the removal rate of Fe and Mn were determined,and the optimal process parameters of the process and the main factors affecting the removal rate of Fe and Mn were determined.The test results show that the pre-oxidation time has a significant effect on the removal rate of Fe in the acid wastewater,and the amount of the precipitant has a significant effect on the removal rate of Mn in the acid wastewater.When the pre-ox⁃idation time was 3 min,pH adjuster dosage was 2 g/L,precipitant dosage was 150 mg/L,the Fe removal rate was 99.57%and the Mn removal rate was 88.26%in the acid wastewater,which were ideal indicators.

关 键 词：煤矿 酸性废水 沉淀 去除率 金属离子 

分 类 号：X752[环境科学与工程—环境工程]