混凝-SBR法对污泥沼液脱氮回用的实验研究  

RESEARCH ON DENITRIFICATION OF SLUDGE BIOGAS SLURRY BY COAGULATION-SBR PROCESS

作　　者：袁基刚[1] 管秀琼[1] 

机构地区：[1]四川理工学院,四川自贡643000

出　　处：《环境工程》2015年第10期38-42,共5页Environmental Engineering

基　　金：四川省科技支撑计划项目(2014GZ0132)

摘　　要：采用混凝-SBR法处理污泥发酵产生的沼液,研究了混凝-SBR法对污泥沼液的脱氮效果和影响因素。结果表明:SBR在进水C/N为1.5,曝气时间8 h,反硝化补充C/N(COD与总氮的比值)为0.25时,其总氮去除率可达78.8%。沼液经过混凝-SBR法处理后,总氮去除率大于80%,其出水ρ(TN)小于100 mg/L,可用于发酵料液的配制,实现污泥沼液脱氮回用的目的。This paper used coagulation-SBR process to treat biogas slurry generated from fermentation of sludge, and investigated the denitrification effects and conditions of coagulation-SBR process. The results indicated that when C / N of inflow was 1. 5,aeration time was 8 h,and additional C / N of denitrification was 0. 25 in SBR,the total nitrogen removal rates could reach 78. 8%. Moreover,after coagulation-SBR process,the total nitrogen removal rates of biogas slurry was greater than 80%and the total nitrogen value of effluent was less than 100 mg / L. In addition,after coagulation-SBR process,the effluent of biogas slurry could be reused and applied in the preparation of fermentation liquor.

关 键 词：混凝 SBR工艺 沼液 

分 类 号：X703[环境科学与工程—环境工程]