混凝处理对煤矿矿井水溶解性有机污染物的影响研究  

Study on the effect of coagulation treatment on dissolved organic pollutants in coal mine water

作　　者：李秋宇 袁可 袁进 李洋 任重远 李晓姣 LI Qiuyu;YUAN Ke;YUAN Jin;LI Yang;REN Zhongyuan;LI Xiaojiao(School of Environmental Science and Engineering,Taiyuan University of Technology,Jinzhong 030600,China;Shanxi Science City Energy and Environment Innovation Research Institute,Taiyuan 030000,China)

机构地区：[1]太原理工大学环境科学与工程学院,山西晋中030600 [2]山西科城能源环境创新研究院,山西太原030000

出　　处：《工业水处理》2025年第3期152-156,共5页Industrial Water Treatment

基　　金：山西省基础研究计划项目(202103021223097);中国博士后科学基金项目(2022m722009)。

摘　　要：通过不同孔径膜分级分离煤矿矿井水混凝处理进出水,并采用三维荧光光谱寻峰法及荧光区域积分法对混凝处理进出水溶解性有机物进行解析,以探究混凝沉淀处理对矿井水溶解性污染物组分产生的影响。结果表明,PAC投加量350 mg/L条件下混凝处理效果最佳,煤矿矿井水中胶体态溶解性有机物(1 nm~0.45μm)可通过混凝沉淀去除(去除率97.78%),涉及的胶体态溶解性有机物包括富里酸类、微生物代谢产物及腐殖质类,矿井水中溶液态溶解性有机物(<1 nm)仍全量保留于混凝处理出水中,主要包括芳香类化合物和富里酸类。此外,混凝药剂过量投加将导致出水COD上升,归因于过量PAC失活导致水中还原性无机离子浓度升高引起。The inlet and outlet water of coagulation unit treating coal mine water were physically graded by membranes with different pore size,and three-dimensional fluorescence spectroscopy peak-seeking method and fluorescence area integration method were used to analyze the dissolved organic compounds in the inlet and outlet water of coagulation unit,in order to explore the impact of coagulation and precipitation treatment on the composition of dissolved pollutants in mine water.The results showed that the coagulation treatment effect was optimal under the condition of PAC dosage of 350 mg/L.The colloidal dissolved organic matter(1 nm-0.45μm)in coal mine water could be basically removed by coagulation and precipitation(removal rate of 97.78%),which involved colloidal dissolved organic matter,including fulvic acid,microbial metabolites,and humic substances.Dissolved organic matter(<1 nm)of the solution state in mine water was still retained in full in the coagulation effluent,mainly including aromatic compounds and fulvic acids.In addition,overdosing of coagulants would lead to an increase in COD in effluent,which was attributed to the inactivation of excess PAC,leading to an increase in the concentration of reducing inorganic ions in the water.

关 键 词：煤矿矿井水 溶解性有机物 混凝处理 三维荧光 

分 类 号：X703[环境科学与工程—环境工程]