净水技术2025，Vol.44Issue(6)：148-156,9.DOI:10.15890/j.cnki.jsjs.2025.06.018
通沟污泥与园林垃圾好氧堆肥作为绿肥基质的探索
Exploration of Aerobic Composting of Sewer Sludge and Garden Solid Wastes for Green Manure Substrates
摘要
Abstract
[Objective]With the implementation of the"dual-carbon"strategy,resource circular utilization has become an important measure to build a low-carbon society and realize the vision of"Carbon Peak"and"Carbon Emission Reduction".The generation and storage of sewer sludge and garden waste are substantial,demanding proper disposal,which poses a challenge in urban ecological pollution governance.This paper explores the feasibility of using sewer sludge and garden organic solid waste as raw materials to prepare garden green fertilizer substrates.[Methods]The experiments consisted of small-scale experiment and pilot-scale experiment.In the small-scale experiment,sewer sludge(mG)and garden waste(mY)were mixed and distributed in mass ratios of 1∶0.6,1∶0.8,1∶1,1∶1.2,and 1∶1.4,and were divided into two groups based on whether 0.5％of the composite microbial agent was added.By monitoring the total mass,moisture content,EC value,and pH of the samples,the optimal raw material ratio conditions were investigated.Based on the result of the small-scale experiment,the pilot-scale experiments regulated the initial temperature and stirring conditions,and measured the product quality of the green fertilizer substrate via the rapid nutrient content of the samples and the seed germination rate.[Results]Verified by the laboratory small-scale experiment and on-site pilot-scale experiment,under the optimized conditions of a suitable mass ratio of sewer sludge and garden waste of 1∶1.2,addition of 0.5％of the EM bacteria agent,and initial heating to 45 ℃,the organic matter content of the compost product reached 23.43％after two weeks,and the mass fraction of ammonium nitrogen,available phosphorus,and available potassium were 32.2 mg/kg,251.7 mg/kg,and 970.3 mg/kg,respectively,with the seed germination index reaching 82.15％.[Conclusion]The experimental result indicates that adding the bacteria agent and providing an initial temperature of 45 ℃ can accelerate the decomposition of organic matter and promote faster compost maturity,while stirring has an insignificant effect on promoting the stability of composting raw materials.Aerobic composting of sewer sludge and garden waste has basically achieved the closed-loop resource disposal goal of producing garden green fertilizer substrates.关键词
通沟污泥/园林垃圾/好氧堆肥/绿肥基质/双碳战略Key words
sewer sludge/garden waste/aerobic composting/green manure substrate/dual carbon strategy分类
资源环境引用本文复制引用
曾凡,孙淇,张竣,杨森,郑涛,王明洪,韩冰..通沟污泥与园林垃圾好氧堆肥作为绿肥基质的探索[J].净水技术,2025,44(6):148-156,9.基金项目
南京工程学院创新基金项目资助(CKJB202112) （CKJB202112）
江苏省高等学校大学生创新创业训练计划项目国家级重点项目(202411276022Z) （202411276022Z）
