LIUZhuang-quan.Zero Discharge and Resource Recovery in LeachateTreatment from a Domestic Waste Incineration Power Plant[J].China Water & Wastewater,2025,41(10):113-118.
生活垃圾焚烧厂渗沥液零排放与资源回收实践
- Title:
- Zero Discharge and Resource Recovery in LeachateTreatment from a Domestic Waste Incineration Power Plant
- Keywords:
- leachate; MBR; membrane treatment; concentrate; co-combustion; full quantitative treatment; zero discharge; resource recovery
- 摘要:
- 以南京江北生活垃圾焚烧发电厂800 m3/d渗沥液处理工程为例，介绍其全量化处理和资源回收系统。渗沥液处理采用预处理+UBF+两级A/O-MBR+NF+RO组合工艺，NF浓缩液处理采用物料膜减量+回喷焚烧炉工艺，RO浓缩液处理采用软化+STRO减量+石灰制浆工艺，沼气经预处理后喷入焚烧炉掺烧发电。实践表明，该项目运行稳定，系统回收率达到83.0%；出水直接用作循环冷却补水，沼气入炉掺烧发电量满足渗沥液处理系统自身用电量需要。该工程做到了渗沥液的全量化处理和零排放，实现了废水的再生利用和资源回收。
- Abstract:
- This paper presents the zero discharge and resource recovery practices at the Nanjing Jiangbei domestic waste incineration power plant,which processes 800 m3/d leachate. The treatment system integrates multiple technologies,including pretreatment, upflow anaerobic sludge blanket filter reactor (UBF), two-stage A/O-MBR, nanofiltration(NF), and reverse osmosis(RO). The NF concentrate is treated using membrane reduction followed by back-spray incineration, while the RO concentrate undergoes softening, STRO reduction, and lime slurry treatment. Additionally, pretreated biogas is sprayed into the incinerator for co-combustion to generate electricity. The system operates stably with a recovery rate of over 83.0%. The treated effluent is reused for cooling water supplementation, and the electricity generated from biogas co-combustion meets the power demands of the leachate treatment system. This project demonstrates a successful implementation of zero discharge leachate treatment,achieving full resource recovery and wastewater reuse.
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