MID系统在校舍污水处理中的应用  

Application of Micro-integrated Device System in Dormitory Wastewater Treatment

作　　者：周慧 李凯 陶文亮[2] 王志康 潘忠鹏 ZHOU Hui;LI Kai;TAO Wenliang;WANG Zhikang;PAN Zhongpeng(College of Eco-Environmental Engineering,Guizhou Minzu University;College of Chemical Engineering,Guizhou Minzu University,Guiyang 550025,China)

机构地区：[1]贵州民族大学生态环境工程学院,贵州贵阳550025 [2]贵州民族大学化学工程学院,贵州贵阳550025

出　　处：《水处理技术》2021年第8期114-119,共6页Technology of Water Treatment

基　　金：2017年贵州省教育厅科技拔尖人才支持项目(黔教合KY字[2017]066);2019年贵州省科技厅项目(黔科合基础[2019]1153号)。

摘　　要：基于厌氧发酵-生物接触氧化法设计的微型一体化装置(MID)处理校舍污水,探究温度和DO对系统性能的影响,同时分析生物膜胞外聚合物(EPS)对以上参数的响应。结果表明:MID系统对COD、NH_(3)-N、TP和浊度的平均去除率分别达到92.68%、99.28%、93.27%和94.10%,出水水质达到行业排放标准。最佳温度和DO分别为(25.6±0.3)℃、2.8mg/L。3D-EEM分析表明,温度和DO接近最适范围时,EPS的种类和含量增加。FT-IR分析显示,温度和DO质量浓度分别为24℃和2.0mg/L,EPS官能团(-OH、-NH_(2)、C=O、C-O-C)的红外吸收峰强度增加。系统用电量仅为0.48kWh/m^(3)。为校舍污水处理中温度和DO对EPS的化学组成和功能基团的响应提供理论依据,该系统具备在大多数校园推广的潜力。A micro-integrated device(MID),based on the technology of anaerobic fermentation and biological contact oxidation,designed for processing schoolhouse sewage,and temperature and DO were systematically investigated for evaluate the influence of pollutants removal performance.In addition,the response of EPS to the above parameters was also analyzed.The results indicated that the average removal rates of COD,NH_(3)-N,TP and turbidity reached 92.68%,99.28%,93.27% and 94.10%,respectively,and the quality of effluent reached national emission standard.Specifically,the MID system has the best overall performance on pollutants at a temperature of(25.6±0.3)℃ and a DO of 2.8 mg/L.3D-EEM analysis showed that the temperature and DO are increasingly close to the optimum range,the richer the species and content of EPS are.FT-IR analysis revealed that the infrared absorption peak strength of the functional groups(-OH,-NH2,C=O,C-O-C)in EPS increased obviously,at a temperature of 24.0℃and a DO of 2.0 mg/L.The electricity consumption of MID system for treating schoolhouse sewage was only 0.48 kWh·m^(-3).The MID system has provided theoretical basis for the response of temperature and DO to the chemical composition and functional groups of EPS in school sewage treatment,and has the potential to be extended in most schools/campuses.

关 键 词：校舍污水 生物接触氧化 胞外聚合物 微型一体化装置 

分 类 号：X703[环境科学与工程—环境工程]