| 城市生活垃圾填埋场的物质存量特征及其环境影响:以粤港澳大湾区为例 |
| 摘要点击 1700 全文点击 777 投稿时间：2019-07-02 修订日期：2019-08-12 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 城市生活垃圾 填埋场 物质存量 组成组分 环境影响 粤港澳大湾区 |
| 英文关键词 municipal solid waste landfill material stock physical components environmental impacts Guangdong-Hong Kong-Macao Greater Bay Area |
|
| 中文摘要 |
| 填埋场中的生活垃圾成分复杂，即使在封场后其存量垃圾仍将持续产生温室气体、恶臭、地下水污染等环境问题，是城市生态环境修复的重点领域之一.生活垃圾填埋场物质存量、组成成分和理化特征是掌握其潜在环境影响的关键.但是目前关于填埋场物质存量及其环境影响的研究还不多见.本研究以我国城市化程度最高、人口最为密集的粤港澳大湾区城市群为例，基于国内外报道的科技信息和统计数据，对11个城市的生活垃圾产生量、处理量、组成成分、填埋场存量及关键元素碳存量进行分析.结果表明：①粤港澳大湾区2017年生活垃圾产生量为26.4 Tg，平均每年增长0.8 Tg，其中卫生填埋处置占58.9%；②总生活垃圾填埋处置量为230.1 Tg，其中食物、塑料和纸类垃圾的累计填埋处置量最多，分别为109.6、38.9和29.6 Tg；③2001~2017年，大湾区城市生活垃圾填埋场总碳输入量为50.0 Tg，通过填埋气排放的碳为7.1 Tg，通过渗滤液排放的碳为1.5 Tg，累积碳存量为41.4 Tg.本研究可为研究城市生活垃圾填埋场的环境影响提供基础数据，为大湾区城市生态环境修复提供科学依据. |
| 英文摘要 |
| The composition of municipal solid waste (MSW) in landfills is complex; additionally, the waste stored in landfills continues to generate greenhouse gases, odors, and ground water pollutants even during the post-closure stage. Therefore, landfills are considered key fields of urban eco-environmental remediation. In this context, it is crucial to understand the storage, composition, physical, and chemical characteristics of waste, as well as its potential environmental impacts. However, very few studies have discussed these topics in detail. In this work, we focused on the Guangdong-Hong Kong-Macao Greater Bay Area (GBA), which has the highest urbanization rate and population density of all China. The generation, stock, physical components, and key elements of MSW in eleven cities of the GBA were analyzed based on both the scientific literature and statistical data. The main results are as follows:① the total amount of MSW produced by the cities was of 26.4 Tg in 2017, with an average annual increment of 0.8 Tg; moreover, the most used disposal method was the sanitary landfill (58.9% of the total); ② the total amount of MSW disposed in the landfills was equal to 230.1 Tg[including mainly food waste (109.6 Tg), plastic (38.9 Tg), and paper (29.6 Tg)]; ③ between 2001-2017, a total of 50.0 Tg of carbon were input in the landfills in the form MSW, of which 7.1 Tg of carbon were emitted as gas and 1.5 Tg were discharged as leachate; moreover, the total landfill carbon stock was equal to 41.4 Tg. Overall, this study provides fundamental data that can be used to determine the environmental impacts of MSW landfills and implement the eco-environmental remediation of urban landfill sites in the GBA. |
|
|
|
