给水厂污泥制备再生填料的中试研究
Pilot-Scale Study on Preparation of Recycled Filler from Sludge in Waterworks
陈志伟 1彭秀华 1闵奇1
作者信息
- 1. 苏州吴中供水有限公司,江苏 苏州 215100
- 折叠
摘要
目前给水厂污泥仍以填埋为主,处置利用水平极低,且易对环境造成二次污染,进行资源化利用无疑是实现污泥再利用的有效技术手段.针对某给水厂污泥特性,采用"调质改性+固化稳定"的两步法工艺开展污泥制备再生填料的研究,制备的再生填料强度高且无污染风险,将其应用于实际沟槽填埋,沟槽压实度≥85%,且 7 d无侧限抗压强度≥0.40 MPa,满足沟槽回填相关要求,可以保证回填工程的质量稳定.
Abstract
At present,the sludge from waterworks is still mainly landfill,with extremely low levels of disposal and utilization,and is prone to causing secondary pollution to the environment,so resource utilization is undoubtedly an effective technical means to achieve sludge reuse.A two-step process of"conditioning modification+solidification stabilization"was adopted to study the preparation of regenerated fillers from sludge in a certain waterworks.The recycled filling material obtained had high strength and no pollution risk.When applied to actual trench landfilling,the compaction degree of the trench was no less than 85%,and the 7 d unconfined compressive strength was no less than 0.40 MPa,which met the requirements of trench backfilling and could ensure the stable quality of the backfilling project.
关键词
给水厂污泥/再生填料/调质改性/固化稳定/压实度/抗压强度Key words
sludge from waterworks/recycled filler/conditioning modification/solidification stabilization/compaction degree/compressive strength引用本文复制引用
出版年
2024
NETL
NSTL
万方数据