MBR处理不同浓度高硫酸盐有机废水效能比较  

Performance comparison of MBRs in treating organic wastewater with different concentrations of sulfate

作　　者：肖小兰[1] 干永鹏 高瑞丽 王潇 冯永锐 陈志刚 阮文权[1,2] XIAO Xiaolan;GAN Yongpeng;GAO Ruili;WANG Xiao;FENG Yongrui;CHEN Zhigang;RUAN Wenquan(School of Environmental and Civil Engineering,Jiangnan University,Wuxi,214122,China;Wuxi Masun Environmental Energy Technology Co.,Ltd,Wuxi,214122,China;Wuxi Xinwu District Mei Village Neighbourhood Environmental Protection,Wuxi,214028,China)

机构地区：[1]江南大学环境与土木工程学院,无锡214122 [2]无锡马盛环境能源科技有限公司,无锡214122 [3]无锡市新吴区梅村街道环境保护科,无锡214028

出　　处：《环境化学》2023年第8期2767-2778,共12页Environmental Chemistry

基　　金：国家重点研发计划绿色生物制造专项(2021YFC2102200);江苏省社会发展-面上项目(BE2020755);无锡市科技成果产业化资金-“太湖之光”科技攻关(产业化关键技术攻关)(C20212004);中央高校基本科研业务费专项资金(JUSRP122027)资助。

摘　　要：针对食品加工过程中产生的高SO_(4)^(2-)有机物废水,采用MBR工艺对其进行处理研究,分别考察了1.6%和2.6%SO_(4)^(2-)浓度下反应器容积负荷和污染物去除情况.经过110天的运行时间发现,进水SO_(4)^(2-)浓度为1.6%的系统能获得更高的容积负荷和污染物去除效率,其最大容积负荷为1.0kg·(m^(3)·d)^(-1) COD,COD去除率为97.7%;而另一方面较高的无机盐环境进水SO_(4)^(2-)浓度为2.6%SO_(4)^(2-)系统下,获得的最大容积负荷仅为0.5kg(m^(3)·d^(-1))(按COD算),COD去除率为96.4%.在2.6%SO_(4)^(2-)浓度下,微生物受到的抑制更强,有机物降解效果低于1.6%SO_(4)^(2-)的系统.此外,氨氮的去除效果也受盐度的影响,1.6%SO_(4)^(2-)系统的氨氮去除率可达91%以上,而2.6%SO_(4)^(2-)系统的氨氮去除率在82%左右.通过长时间的运行,两套MBR装置均建立了同步硝化反硝化的脱氮体系,对总氮具有一定的去除效率.其中1.6%SO_(4)^(2-)系统中总氮的去除率为89.5%,而2.6%SO_(4)^(2-)系统中总氮的去除效率为80.7%.两套反应器装置对总磷均能达到100%的去除效果.综上,不同盐度对MBR体系容积负荷和有机物去除率具有显著影响.相比于2.6%SO2,1.6%SO_(4)^(2-)浓度条件下能获得更高的容积负荷和更好的污染物去除效果.本研究可为MBR应用于高盐高浓度有机物废水的处理提供理论基础和实践指导.The membrane bioreactor(MBR)was used to treat the organic wastewater with high SO2 produced in the food processing process,and the reactor volume load rate(VLR)and organic pollutant removal efficiency were compared with different SO_(4)^(2-)concentration at 1.6%and 2.6%respectively.the reactors operated for 110 d,and it was found that the reactor with influent of 1.6%SO2-could obtain higher VLR of 1.0 kg(m^(3)·d)^(-1)COD and better COD removal efficiency of 97.7%.However,for the influent of 2.6%SO_(4)^(2-),the maximum VLR and COD removal efficiency were only 0.5 kg(m^(3).d)^(-1)COD and 96.4%respectively.With the concentration of 2.6% SO_(4)^(2-),the inhibition effect of the salinity on the microorganisms was stronger than that of 1.6%SO,thus the degradation efficiency of organic matter was lower at 2.6%SO_(4)^(2-).In addition,the removal efficiency of ammonia nitrogen was also affected by salinity,which was verified by the fact that ammonia nitrogen removal efficiencies were 91% and 82% at concentrations of 1.6% SO_(4)^(2-)and 2.6% SO_(4)^(2-)respectively.After a long-term operation period,two sets of MBR units had established simultaneous nitrification and denitrification systems.The removal efficiency of total nitrogen was 89.5%in 1.6% SO_(4)^(2-)system,while that was 80.7%in 2.6%SO_(4)^(2-)system.Moreover,100% removal efficiencies for total phosphorus in two reactors were obtained.In conclusion,different salinity presented significant influence on the VLR and organic matter removal in the MBR system.Compared with the reactor of 2.6%SO,the reactor of 1.6% SO_(4)^(2-)could obtain higher VLR and better pollutant removal efficiency.This study can provide theoretical basis and practical guidance for the application of MBR in the treatment of high-salt and high-concentration organic wastewater.

关 键 词：高硫酸盐 高浓度废水 好氧膜生物反应器 污水处理 

分 类 号：X703[环境科学与工程—环境工程]