污泥液体肥的应用及优化研究进展  

Research progress on application and optimization of sludge liquid fertilizer

作　　者：陈小洁 李夏桐 杨林 白科 程刚[1] CHEN Xiao-jie;LI Xia-tong;YANG Lin;BAI Ke;CHENG Gang(School of Environmental and Chemical Engineering,Xi′an Polytechnic University,Xi′an 710048,China)

机构地区：[1]西安工程大学环境与化学工程学院,陕西西安710048

出　　处：《化学工程师》2022年第3期59-62,33,共5页Chemical Engineer

基　　金：陕西省科技计划项目(2019GY-163);西安市科技计划项目(20SFSF0012);西安工程大学产学研用项目(2020KJ234)。

摘　　要：污泥脱水困难,固体堆肥无法去除重金属及持久性有机污染物降解不彻底等严重制约污泥的农业利用。本文介绍了污泥液体肥的应用现状,指出污泥胞外聚合物结构的稳定性限制了水解速率,影响了污泥液体肥的肥力。分析了物理、化学及其组合工艺的优化效果,在总结污泥液体肥的膜分离提纯与膜浓缩减小体积的基础上,明确了污泥液体肥的优化方向。It is difficult to dewater excess sludge,solid compost can not remove heavy metals,and the degradation of persistent organic pollutants is not complete,which seriously restricts the agricultural utilization of sludge.This paper introduces the application status of sludge liquid fertilizer,and points out that the stability of sludge extracellular polymer structure limits the hydrolysis rate and affects the fertility of sludge liquid fertilizer.The optimization effects of physical,chemical and combined processes were analyzed.Based on the summary of membrane separation and purification and membrane concentration to reduce the volume of sludge liquid fertilizer,the optimization direction of sludge liquid fertilizer was defined.

关 键 词：污泥 液体肥 消化 预处理 膜分离 

分 类 号：X703[环境科学与工程—环境工程]