微电场-零价铁-UBF提高有机硫对位酯生产废水同步产甲烷反硝化效能  

Enhanced SMD process in treating organic sulfur compounds and para-ester manufacturing wastewater by micro-electric field-ZVI-UBF

作　　者：郭进 水远敏 万佩佩 李伟成[3] 高迎新[3] 戚伟康 GUO Jin;SHUI Yuanmin;WAN Peipei;LI Weicheng;GAO Yingxin;QI Weikang(Huahang Environmental Developed Co.Ltd.,Beijing 100071,China;Dasmart Environmental Science and Technologies Co.Ltd.,Beijing 100089,China;State Key Laboratory of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences,Chinese Academy of Science,Beijing 100085,China;National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]华航环境发展有限公司,北京100071 [2]达斯玛环境科技股份有限公司,北京100089 [3]中国科学院生态环境研究中心,环境水质学国家重点实验室,北京100085 [4]北京工业大学,城镇污水深度处理与资源化利用技术国家工程实验室,北京100124

出　　处：《环境工程学报》2020年第8期2186-2192,共7页Chinese Journal of Environmental Engineering

基　　金：北京市自然科学基金资助项目(8194056);城市生活污水资源化利用技术国家地方联合工程实验室(苏州科技大学)开放课题(2018KF04)。

摘　　要：有机硫化合物对位酯生产废水具有COD高、含硫酸盐和有机硫高以及碳硫比低的特点,针对单一厌氧反应器在处理废水时只能在较低COD容积负荷(OLR)下运行的问题,在提高有机硫对位脂生产废水产甲烷反硝化效能的基础上,采用微电场-零价铁联合方式处理该类废水。实验结果表明:OLR(以COD计)为6.67 g·(L·d)^-1,进水COD为20000 mg·L^-1时,复合床的COD去除率为70%,产甲烷率为1.41 L·(L·d)^-1,反硝化率为87%,对位脂降解率为74%;在COD/TSO^2-4(总硫酸盐)为1.57时,COD去除率、产甲烷率和反硝化率可分别能稳定在60%、1.18 L·(L·d)^-1和79%;在COD/TSO^2-4为0.88时,产甲烷菌受到中等程度的抑制;当COD/TSO^2-4恢复为1.57时,厌氧系统在7 d后恢复,说明联合系统有很强的恢复能力。综合上述结果,与单一的UBF处理相比,采用微电场-零价铁能显著提高UBF的运行负荷和同步产甲烷反硝化能力,同时也能使反应器承受更低的碳硫比。Organic sulfur(s)compounds and para-ester manufacturing wastewater was characterized as high COD,rich sulfate and organic S compounds and low C/S ratio.Single anaerobic reactor treating this kind of wastewater can only run at low COD loading rate(OLR),then the micro-electric field-zero-valent-iron(ZVI)joint system was used to treat it based on the enhancing effect of methanogenesis and denitrification from organic S compounds and para-ester manufacturing wastewater.The experimental result indicated that the compound bed could remove 70%of COD,achieve 1.41 L·(L·d)^-1 of methane production rate,87%of denitrification efficiency and 74%para-ester degradation efficiency at COD organic load rating(OLR)up to6.67 g·(L·d)^-1 and influent COD of 20000 mg·L^-1.At COD/TSO^2-4efficiency,methane production rate and denitrification efficiency could be stabilized at 60%,1.18 L·(L·d)^-1 and79%,respectively.At COD/TSO^2-4anaerobic system could recover after seven days when COD/TSO^2-4resilience of the joint system.This study revealed that compared with single UBF treatment,the combination micro-electric field-zero-valent-iron(ZVI)with UBF not only resulted in the significant increase of operated OLR and the ability of simultaneous methanogeneis and denitrification(SMD)of the joint system,but also tolerance to lower C/S ratio.

关 键 词：微电场-零价铁-UBF 有机硫化合物 对位脂生产废水 COD/TSO42- 同步产甲烷反硝化 

分 类 号：X703[环境科学与工程—环境工程]