净水技术2017，Vol.36Issue(12)：27-32,6.DOI:10.15890/j.cnki.jsjs.2017.12.005
污水污泥和消化污泥热解过程中重金属迁移转化行为对比分析
Comparative Analysis of Heavy Metals Migration and Transformation between Sewage Sludge and Digested Sludge during Pyrolysis Process
摘要
Abstract
Raw sludge (RS) and anaerobic digestion sludge (DS) were conducted to obtain the bio-char.Effects of anaerobic digestion on migration and transformation of heavy metals (Cu,Zn,Cr,Cd,Pb) from sewage sludge were explored during pyrolysis process.Results showed that the contents of steady-state Cd and Cr in DS bio-char were higher than RS bio-char at the same pyrolysis temperature.There was no significant difference in the form distributions of Pb between DS bio-char and RS bio-char.However,the content of unstable state Zn in DS bio-char were higher than that in RS bio-char at the same pyrolysis temperature.Further research results showed that migration and transformation ability of Cu、Zn、Cr and Pb in both RS and DS were significantly reduced at lowtemperature pyrolysis.Furthermore,the transformation of F1 and F2 fractions into F3 and F4 fractions were improved by the pyrolysis,indicating that environmental risk level of heavy metals in sludge was reduced by low-temperature pyrolysis.关键词
污水污泥/消化污泥/热解/重金属/形态分布/风险评价Key words
sewage sludge/digested sludge/pyrolysis/heavy metal/form distribution/risk assessment分类
建筑与水利引用本文复制引用
于晓庆,董滨,何群彪,戴晓虎..污水污泥和消化污泥热解过程中重金属迁移转化行为对比分析[J].净水技术,2017,36(12):27-32,6.基金项目
城市污泥安全处理处置与资源化全链条技术能力提升与工程实证(2017ZX07403002) （2017ZX07403002）
市政污泥和城市有机质协同高级厌氧消化产业化技术科技创新成果转化项目(201701-YP-C1086-021) （201701-YP-C1086-021）
城市有机质废弃物高级协同厌氧生物制气产业化技术研发(17XD1420500) （17XD1420500）
