| 近5 a我国部分城市群生活垃圾组分含水率及其特征分析 |
| 摘要点击 269 全文点击 18 投稿时间：2023-12-12 修订日期：2024-07-02 |
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| 中文关键词 城市生活垃圾（MSW） 垃圾组分 含水率 垃圾分类 模型 |
| 英文关键词 municipal solid waste （MSW） waste components moisture content waste classification model |
| 作者 | 单位 | E-mail | | 王小波 | 中国科学院广州能源研究所, 广州 510640
中国科学院可再生能源重点实验室, 广州 510640
广东省新能源和可再生能源研究开发与应用重点实验室, 广州 510640 | wangxb@ms.giec.ac.cn | | 刘安琪 | 中国科学院广州能源研究所, 广州 510640
中国科学院可再生能源重点实验室, 广州 510640
广东省新能源和可再生能源研究开发与应用重点实验室, 广州 510640 | | | 钟慧琼 | 中国科学院广州能源研究所, 广州 510640
中国科学院可再生能源重点实验室, 广州 510640
广东省新能源和可再生能源研究开发与应用重点实验室, 广州 510640 | | | 赵增立 | 中国科学院广州能源研究所, 广州 510640
中国科学院可再生能源重点实验室, 广州 510640
广东省新能源和可再生能源研究开发与应用重点实验室, 广州 510640 | zhaozl@ms.giec.ac.cn |
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| 中文摘要 |
| 城市生活垃圾的组分含水率是决定其终端处理技术和资源回收利用方式的关键因素,明确组分含水率的特性和预测方法对垃圾处理设施的规划和设计具有指导作用.基于全国30多个城市的500多个生活垃圾样本,分析了近5 a来我国部分城市群生活垃圾的组分含水率的变化趋势和其与生活垃圾总含水率的相关性,并建立了垃圾含水率的预测模型.结果表明,从全国平均来看,生活垃圾中含量较高且出现概率较大的组分主要有：厨余类、纸类、橡塑类、纺织类和木竹类等,除个别城市外,以上组分的出现概率通常超过80%；上述组分同时也是生活垃圾组分中含水率较高的组分.生活垃圾中含量较低的组分则因地而异.生活垃圾的主要组分含水率大小为：厨余类>木竹类>纸类>纺织类>橡塑类.从平均值来看,厨余和木竹等通常认为含水率较高的组分近5 a来的含水率平均值有所下降.纸类、橡塑类、纺织类和木竹类的含水率之间的相关系数均略高于0.3,表明上述组分的含水率有弱正相关性.模型分析表明,不能简单地用组分的平均含水率来预测垃圾的总含水率,建立的生活垃圾含水率预测模型可使85.45%的样本的水分预测值与实测值的误差在20%以内,能较好地适用于我国生活垃圾的水分预测. |
| 英文摘要 |
| The moisture content of the components of municipal solid waste （MSW） is a key factor that determines the end treatment technology and resource recovery methods. Understanding the variation patterns and prediction methods of the moisture content of the components has a guiding role for the planning and design of waste treatment facilities. Based on more than 500 MSW samples from more than 30 cities across China, this study analyzes the variation trends and correlations of the moisture content of the components of MSW in Yangtze River Delta, Pearl River Delta, Beijing-Tianjin-Hebei, and other major urban agglomerations and northeast, southwest, and North China in the past five years and establishes a prediction model of the moisture content of waste. The results showed that, from the national average, the main components that had higher content and higher probability of occurrence in MSW were： kitchen waste, paper, rubber and plastic, textiles, wood/bamboo, etc. Except for a few cities, the probability of occurrence of these components usually exceeded 80%. The components with lower content in MSW varied by location. The order of the moisture content of the main components of MSW was： kitchen waste > wood/bamboo > paper > textiles > rubber and plastic. From the average value, the moisture content of the components such as kitchen waste and wood/bamboo, which are usually considered to have high moisture content, has decreased slightly in the past five years. The moisture content of the main components of MSW did not change significantly with seasons； however, on the whole, it showed a weak cyclical change. In addition to paper, the average water content and average total water content of the main components of MSW reached the maximum value in July to August and the minimum value in February to March, and the average water content and average total water content of paper reached the maximum value in February and the minimum value in August. The correlation coefficients between the moisture contents of paper, rubber and plastic, textiles, and wood/bamboo were slightly higher than 0.3, indicating that these components might have similar sources of water. Model analysis showed that it is not appropriate to use the average moisture content of the components to predict the moisture content of MSW. The prediction model of the moisture content of MSW established in this study can make the error between the moisture content prediction value and the measured value of 85.45% of the samples within 20%, which can be well applied to the water prediction of domestic waste in China. |
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