摘要
我国厨余垃圾产量逐年上升,其资源化处理成为固废处理的重点。为探究当前主要使用的几种厨余垃圾资源化回收方式的碳排放与能源使用情况,采用IPCC与相关文献中推荐的核算方式对污水共处理、厌氧消化、焚烧与堆肥4种处理方式的碳补偿和能源回收情况进行评估。结果表明:4种处理方式的碳补偿潜力分别为-56.9,4-88.6,44.2,222.0 kg CO_(2)/t FW。能源回收潜力分别为-116.0,-215.0,58.9,61.0 kW·h/t FW。而根据敏感性分析可知:除技术层面影响外,共处理和厌氧消化方式的稳定性较强,两者均为非常理想的资源化处理方式。焚烧方式由于涉及脱水过程,造成大量碳排放,且整体稳定性较差。堆肥方式无法实现碳补偿与能源回收,基于碳中和的视角应尽量减少该方式的使用。综上可得,厨余垃圾资源化处置方式的优先级顺序为厌氧消化、共处理、焚烧、堆肥。
With China’s food waste production increasing yearly,recycling energy from food waste becomes a key issue in solid waste treatment.In order to explore the carbon emissions and energy usage of several main food waste recycling methods,this paper used the accounting methods recommended by IPCC and related literature to evaluate the carbon offset and energy recovery of four treatment methods,sewage co-treatment,anaerobic digestion,incineration and composting.The results showed that the carbon offset potential of the four treatment methods was-56.9,-88.6,44.2,and 222.0 kg CO_(2)/t FW,respectively.The energy recovery potential was-116.0,-215.0,58.9,and 61.0 kW·h/t FW,respectively.According to the sensitivity analysis,the co-treatment and anaerobic digestion mode have strong stability in addition to the technical influence,indicating that co-treatment and anaerobic digestion are ideal resource treatment methods.The incineration method involves a large amount of carbon emissions due to the dehydration process,and the overall stability is poor.Composting can′t achieve carbon emission reduction and energy recovery,so its application should be minimized.To sum up,the priority sequence of food waste recycling disposal was anaerobic digestion,sewage co-treatment,incineration and composting.
作者
陈文昊
袁辉洲
柯水洲
柳晓明
CHEN Wenhao;YUAN Huizhou;KE Shuizhou;LIU Xiaoming(College of Civil Engineering,Hunan University,Changsha 410000,China;School of Materials and Environmental Engineering,Shenzhen Polytechnic,Shenzhen 518000,China)
出处
《环境工程》
CAS
CSCD
北大核心
2023年第7期37-44,共8页
Environmental Engineering
基金
国家自然科学基金(52070076)
广东省教育厅自然科学基金(2021A1515110040)。
关键词
厨余垃圾
污水处理
能源回收
碳中和
food waste
sewage treatment
energy recovery
carbon neutral
