厨余垃圾和污水污泥共消化的全流程碳中和潜力研究

李思; 袁辉洲; 柯水洲; 柳晓明

doi:10.13205/j.hjgc.202411010

厨余垃圾和污水污泥共消化的全流程碳中和潜力研究

doi: 10.13205/j.hjgc.202411010

1. 湖南大学土木工程学院, 长沙 410000;
2. 深圳职业技术大学材料与环境工程学院, 广东深圳 518000

基金项目:

深圳职业技术大学科研基金(6022310022K)

深圳市科技计划(20231127215744002)

广东省基础与应用基础研究基金项目(2021A1515110040)

详细信息

作者简介:
李思(2000-),女,硕士研究生,主要研究方向为污水处理碳排放。ls171404@163.com

通讯作者:
袁辉洲,女,副教授,主要从事污水处理技术和水系统碳排放等方面的研究工作。yuanhzh@szpt.edu.cn

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出版历程
- 收稿日期: 2023-08-17
- 网络出版日期: 2025-01-16

CARBON NEUTRAL POTENTIAL OF WHOLE PROCESS OF CO-DIGESTION OF FOOD WASTE AND SLUDGE

1. College of Civil Engineering, Hunan University, Changsha 410000, China;
2. School of Materials andEnvironmental Engineering, Shenzhen Polytechnic University, Shenzhen 518000, China

摘要

摘要: 在我国积极推进碳中和的背景下,厨余垃圾(FW)与污泥共消化是一项具有潜力的低碳处理模式。然而,针对共消化对污水厂潜在环境影响的相关研究较为匮乏。此外,共消化上清液中氮含量较高,低碳工艺短程硝化厌氧氨氧化(PN/A)可实现低能耗和自养脱氮。因此,利用Biowin软件模拟了FW和污泥共消化,并采用侧流PN/A处理上清液的处理方式,重点探究了FW与污泥共消化的碳中和潜力和可持续性。结果表明:共消化的产甲烷量比FW单独消化高109.5%,系统整体能量回收提高1.3倍,碳中和率可达132.2%。敏感性分析显示,FW与污水厂结合实现碳中和的重要发展方向在于低能耗运行、高效能源资源回收。该研究旨在为构建面向碳中和的协同处理方式提供参考,为FW和污水污泥的可持续处理提供理论依据和实践支撑。
- 厨余垃圾 /
- 污水污泥 /
- 侧流PN/A /
- 生命周期评价 /
- 能量平衡 /
- 碳中和潜力
Abstract: In the context of China’s active promotion of carbon neutrality, co-digestion of food waste (FW) and sludge is a potential low-carbon treatment model. However, few studies have been conducted on the potential effect of co-digestion on wastewater treatment plants. In addition, the nitrogen content in the co-digested supernatant is high, and the low-carbon process of partial nitrification and anammox (PN/A) allows for low energy consumption and autotrophic nitrogen removal. Therefore, the co-digestion process of food waste and sludge was introduced in this study, and the supernatant was subjected to sidestream PN/A treatment, focusing on the carbon neutral potential and sustainability of food waste and sludge co-digestion. The findings indicated that the methane production of co-digestion was 109.5% higher than that of food waste digestion alone, the system could enhance the overall energy recovery by 1.3 times and achieve a carbon neutral state rate of 132.2%. Additionally, sensitivity analysis highlighted that low-energy operation and efficient energy resource recovery are crucial directions for combining food waste and wastewater treatment to accomplish carbon neutrality. The objective of this study is to provide a reference for the establishment of carbon-neutral collaborative treatment models, and provide both theoretical groundwork and practical assistance for the sustainable treatment of food waste and sludge.
- food waste /
- sewage sludge /
- sidestream PN/A /
- life cycle assessment /
- energy balance /
- carbon neutral potential

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