玄武岩纤维-周丛生物膜-连续流反应器的污水深度净化性能研究  

Performance of Basalt Fiber-Periphyton-Continuous Flow Reactor for Deep Purification of Sewage

作　　者：施天宇 赵玥 张润 景连东[1] SHI Tian-yu;ZHAO Yue;ZHANG Run;JING Lian-dong(School of Chemistry and Environment,Southwest Minzu University,Chengdu 610041,China)

机构地区：[1]西南民族大学化学与环境学院,四川成都610041

出　　处：《西南民族大学学报(自然科学版)》2023年第6期637-644,共8页Journal of Southwest Minzu University(Natural Science Edition)

基　　金：四川省自然科学基金项目资助(2022NSFSC0232);西南民族大学中央高校科研项目(2023NYXXS020)。

摘　　要：污水处理厂排水中氮、磷等营养盐浓度仍高于地表水,可能导致受纳水体富营养化,需要对其深度净化.周丛生物膜因其在脱氮除磷方面的优异性能而引起越来越多的关注.因此,设计了基于玄武岩纤维-周丛生物膜的连续流反应器(BFP-CFR),研究了不同水力停留时间(HRT)下BFP-CFR对污水深度净化的性能.研究结果显示,BFP-CFR的最佳HRT为48 h.该HRT下氨氮(NH4+-N)、总氮(TN)和总磷(TP)的去除率为79.88%、25.36%和94.83%.经过该反应器处理后,可显著降低污水氮磷污染物浓度.当HRT≥32 h时,氨氮出水浓度可达《地表水环境质量标准》(GB 3838-2002)Ⅳ类标准及以上,总磷浓度符合《地表水环境质量标准》(GB 3838-2002)Ⅱ类标准及以上.反应器出水水质和净化动力学分析表明,由于BFP反硝化能力弱,本反应器水质净化的限制性污染物为总氮,后续需要在促进反硝化功能以强化脱氮方面开展研究.这为今后将BFP运用于污水处理后排水的深度净化提供了数据支撑,指出了需要技术突破的方向.The content of nitrogen,phosphorus,and other nutrients in wastewater treatment plant effluent are higher than those of surface water,which may lead to the eutrophication of the receiving water.Therefore,wastewater treatment plant effluent requires deep purification.Periphyton has attracted more and more attention due to their excellent performance in nitrogen and phosphor-us removal.Therefore,a continuous flow reactor based on Basalt Fiber-Periphyton(BFP-CFR)was designed,and the perform-ance of the reactor for deep purification of wastewater under different Hydraulic Retention Times(HRT)was studied.The results showed that the optimum HRT of BFP-CFR is 48 h.The removal rates of ammonia nitrogen(NH4+-N),total nitrogen(TN),and total phosphorus(TP)were 79.88%,25.36%,and 94.83%under the HRT.After treatment,the concentration of nitrogen and phosphorus pollutants could be significantly reduced.When HRT≥32 h,the effluent concentration of ammonia nitrogen could meet the ClassⅣstandard or above in Environmental quality standards for surface water(GB 3838-2002),and the total phos-phorus concentration could meet the ClassⅡstandard or above in Environmental quality standards for surface water(GB 3838-2002).The analysis of water quality after purification and purification kinetics showed that TN was the limiting pollutant in wa-ter purification because of the weak denitrification ability of BFP,and subsequent studies should be carried out in promoting denitrification function to strengthen nitrogen removal.These provide data support for the future application of BFP to the deep purification of sewage drainage after treatment and helped to point out the direction of technological breakthroughs.

关 键 词：深度净化 周丛生物膜 水力停留时间 氮 磷 

分 类 号：X703[环境科学与工程—环境工程]