CMC-膨润土固定化微生物降解对硝基苯酚废水的研究  

Study on Degradation of p-Nitrophenol Wastewater by Immobilized Microorganism with CMC-Bentonite

作　　者：王启山 韩笑 于春来 宋金洪 卢振兰[1] WANG Qishan;HAN Xiao;YU Chunlai;SONG Jinhong;LU Zhenlan(College of Resources and Environment, Jilin Agricultural University, 130118;Jilin Provincial Environmental Monitoring Center Station, 130011;Zhongshui Northeast Survey Design＇Research Limited Liability Company, 130021： Changchun, China)

机构地区：[1]吉林农业大学资源与环境学院,130118 [2]吉林省环境监测中心站,130011 [3]中水东北勘测设计研究有限责任公司,吉林长春130021

出　　处：《水处理技术》2018年第7期62-65,82,共5页Technology of Water Treatment

基　　金：国家水体污染控制与治理科技重大专项子课题"水污染源监测监管技术体系研究"(2009ZX07527-002)

摘　　要：为提高废水中的对硝基苯酚的降解效率,选择固定化微生物方法处理对硝基苯酚废水,以羧甲基纤维素钠和膨润土作为固定化原料,运用包埋法将从活性污泥中筛选出来的对硝基苯酚高效降解菌进行固定,并对其对对硝基苯酚的降解性能进行研究。结果表明:固定化微生物颗粒降解对硝基苯酚的最佳固液比为0.12,最适温度为35℃,适宜p H为9~12。在对硝基苯酚浓度为10 mg/L时,固定化微生物颗粒对其的降解率可达97.84%,在浓度不超过150 mg/L时,降解率均能保持在80%以上。研究表明,该固定化微生物颗粒可在碱性条件下有效降解对硝基苯酚废水。In order to improve the degradation efficiency of p-nitrophenol in wastewater, the immobilized microbial method was used to degrade p-nitrophenol in wastewater. Sodium carboxymethyl cellulose and bentonite were selected as carriers to immobilize the efficient degradation bacteria which were screened from the activated sludge by embedding method. The degradation property of p-nitrophenol was studied. The results showed that the optimum solid to liquid ratio for p-nitrophenol degradation was 0.12, the optimum temperature was 35 ℃, and the optimum p H was 9-12. When the concentration of p-nitrophenol was 10 mg/L, the degradation rate by the immobilized microorganism particles could reach 97.84%, and the degradation rate could remain above 80% when the concentration was less than 150 mg/L. The research showed that the immobilized microbial particles could effectively degrade p-nitrophenol in wastewater under alkaline conditions.

关 键 词：对硝基苯酚 CMC-膨润土 固定化微生物 降解特性 

分 类 号：X703.1[环境科学与工程—环境工程]