剩余污泥发酵沼渣成分分析及脱水性能研究  

Component analysis and dewaterability performance study of excess sludge fermentation residue

作　　者：覃银红[1] 易艳[1] 王兰亭[1] 陈娇[1] 袁媛[1] 袁基刚[2] 谢燕华[1] 施国中[3] 

机构地区：[1]成都理工大学环境与土木工程学院,四川成都610059 [2]四川理工学院化学与环境工程学院,四川自贡643000 [3]农业部沼气科学研究所,四川成都610041

出　　处：《环境污染与防治》2016年第8期36-38,43,共4页Environmental Pollution & Control

基　　金：中国农业科学院科技创新工程项目

摘　　要：通过对剩余污泥发酵沼渣进行成分分析,判断其是否适合于有机肥料的原料,并研究了其脱水性能.结果表明,剩余污泥发酵沼渣总养分和有机质质量分数分别为4 .2 2 % -4 .4 8 % 、9.1 7% -9 .2 6 % ,未达到《有机肥料KNY 525- 2012 ）的标准值.重金属Cr 、Cd、As、Pb 、Hg 的质量浓度分别为116 . 5 7-137 . 06、1.16-1.57、9.76-10.75、41.23-48.29、1.67-1.94 mg/ kg,均达到NY525- 2012 的标准值.二次厌氧发酵沼渣实验证明,其含水率和有机质已基本稳定.因此,剩余污泥发酵沼渣不能直接用作有机肥料,但可以作为有机肥料的原料.当聚丙埽酰胺（PAM）、聚合氯化铝（PAC）投加量分别为2 、5g/L时,剩余污泥发酵沼渣离心后含固率可分别提髙到30.24 % 、30.34 % ,可显著改善其脱水性能.Component of excess sludge fermentation residue was analyzed for organic fertilizer evaluation.The dewaterability performance was also studied.Results showed that the mass fraction of total nutrient and organic matter were 4.22%-4.48% and 9.17%-9.26%,respectively,not satisfying 'Organic fertilizer'(NY 525-2012).The mass concentrations of Cr,Cd,As,Pb and Hg were 116.57-137.06,1.16-1.57,9.76-10.75,41.23-48.29 and 1.67-1.94mg/kg,respectively.The heavy metal satisfied NY 525-2012,indicating that the excess sludge fermentation residue was safe enough to be used as raw material of organic fertilizer.Secondary anaerobic fermentation experiment showed that the excess sludge fermentation residue was already stable.When polyacrylamide(PAM)addition amount was 2g/L or polymeric aluminum chloride(PAC)5g/L,the solid contents of the residue could reach 30.24% or 30.34%,respectively.Therefore,the dewaterability performance could be effectively improved by adding PAM or PAC.

关 键 词：剩余污泥发酵沼渣 有机肥料 脱水性能 

分 类 号：X703[环境科学与工程—环境工程]