基于MBBR的高效脱氮工艺在酿酒废水中的研究  

Study on efficient nitrogen removal based on MBBR in brewery wastewater

作　　者：朱杰 刘桂文 郭亭 刘洋 张宿义[3] 宋珊 Zhu Jie;Liu Guiwen;Guo Ting;Liu Yang;Zhang Suyi;Song Shan(Nanjing Institute of White-Biotech Co.,Ltd.,Nanjing 210000,China;Jiangsu of Industrial Biotech-nology,JITRRI Co.,Ltd.,Nanjing 211800,China;Luzhou Laojiao Co.,Ltd.,Luzhou 646000,China)

机构地区：[1]南京高新工大生物技术研究院有限公司,南京211800 [2]江苏集萃工业生物技术研究所有限公司,南京211800 [3]泸州老窖股份有限公司,四川泸州646000

出　　处：《环保科技》2023年第3期12-17,共6页Environmental Protection and Technology

基　　金：泸州市科技计划项目重点研发专项(2020-GYF-6)。

摘　　要：酿酒废水是一类高浓度有机废水,现阶段主流处理工艺为预处理+厌氧+缺氧/好氧组合工艺。本研究主要针对缺氧/好氧段进行改造,开发基于移动床生物膜反应器(MBBR)的高效脱氮工艺。通过对载体材料进行筛选,选择改性聚乙烯载体作为填料,其对COD、TN、TP的去除率分别为91.73%、95.14%、96.43%。将原A2/O工艺改为基于MBBR技术的A2/O工艺,水力停留时间从3.2 d减少到24 h,出水水质达到《污水排入城镇下水道水质标准》(GB/T 31962—2015)排放标准。与原A2/O工艺相比,改良后的工艺通过对硝化菌和反硝化菌的富集促进了硝化和反硝化过程,从而提高了系统的生物脱氮能力。Brewing wastewater is a kind of high concentration organic wastewater.At present,the mainstream treatment process is pretreatment,anaerobic and anoxic/aerobic combined process.This study focused on the reconstruction of the anoxic/aerobic section,and developed an efficient nitrogen removal based on Moving Bed Biofilm Reactor(MBBR).By screening the carrier materials,the modified polyethylene carrier was selected as the filler,and the removal rates of COD,TN and TP were 91.73%,95.14%and 96.43%respectively.The original A 2/O process was changed to the A 2/O process based on MBBR technology.The result showed that hydraulic retention time(HRT)was reduced from 3.2d tO_(2)4h,and the effluent quality met the discharge standard of GB/T 31962-2015.Compared with the original A 2/O process,the optimized process promoted the nitrification and denitrification process by enriching nitrifying bacteria and denitrifying bacteria,thus improving the biological nitrogen removal capacity of the system.

关 键 词：MBBR工艺 改性载体填料 高效脱氮 微生物群落结构 废水处理 

分 类 号：P431[天文地球—大气科学及气象学] X823[环境科学与工程—环境工程]