水解酸化-MBBR生物处理印染废水工艺  

Printing and dyeing wastewater treatment by hydrolysis acidification-MBBR biological technology

作　　者：杨楠楠 刘永红[1] 王宁[1] 党康 杨谨如 YANG Nannan;LIU Yonghong;WANG Ning;DANG Kang;YANG Jinru(School of Environmental and Chemical Engineering, Xi’an Polytechnic University, Xi’an 710048,China)

机构地区：[1]西安工程大学环境与化学工程学院,陕西西安710048

出　　处：《西安工程大学学报》2020年第4期38-42,共5页Journal of Xi’an Polytechnic University

基　　金：国家自然科学基金(21176197);陕西省创新能力支撑计划项目(2019HBGC-34);陕西省教育厅专项科学研究计划项目(19JK0370);西安工程大学研究生创新基金项目(chx2019041)。

摘　　要：为了提高印染废水中各种难降解有机物的降解效率,采用水解酸化-移动床生物膜反应器(moving bed bio-film reactor,MBBR)生物处理工艺对某厂实际印染废水的处理过程进行了研究,考察了该工艺对废水污染物的去除效果。现场实验结果表明:当废水处理量为1.92 m^3/d时,该工艺对于印染废水中COD的去除率达到75%,对氨氮的去除率可达60%;通过SEM扫描电镜观察发现聚氨酯多孔生物凝胶(porous bio-gel,PBG)填料的表面和内部附着了大量菌落,且菌胶团紧密而厚实。此外,经测定PBG填料负载的污泥浓度高达7700 mg/L,远高于其他MBBR工艺的悬浮填料负载的污泥浓度(3090 mg/L),污泥负载效果好。In order to improve the degradation efficiency of various refractory organics in printing and dyeing wastewater,the hydrolysis acidification-MBBR biological treatment process was used to study the treatment process of actual printing and dyeing wastewater in a plant,and the removal efficiency of the wastewater pollutants was investigated.The results show that when the wastewater treatment volume was 1.92 m^3/d,the removal rate of COD in printing and dyeing wastewater reaches 75%,and that of ammonia nitrogen 60%;It was found by SEM scanning electron microscopy that a large number of microorganisms were attached to both the surface and the inside of the PBG filler,and a large number of colonies were also attached inside,and the micelles were dense and thick.In addition,the biosludge concentration of the PBG filler was determined to be as high as 7700 mg/L,which is much higher than that of other suspended fillers in the same process,showing the excellent sludge attachment on the carriers.

关 键 词：移动床生物膜反应器 印染废水 聚氨酯多孔生物凝胶悬浮填料 污泥浓度 

分 类 号：X791[环境科学与工程—环境工程]