我国村镇生活垃圾可燃组分基本特征及其时空差异

发布时间：2018-06-13 07:31

本文选题：村镇生活垃圾 + 组成成分　；参考：《环境科学》2017年07期

【摘要】：为了解我国村镇生活垃圾组成特征及采取焚烧处置的可行性,本研究在2015年的春夏秋冬4个季节,对我国12个省份共72个村镇生活垃圾产生源进行采样调查,分析了垃圾全组分和可燃组分的质量分数、含水率以及垃圾热值等参数,进行了地域、季节以及村与镇之间差异分析.结果表明,我国村镇生活垃圾可燃组分质量分数(湿基)由高到低的顺序为:厨余类(13%~53%)橡塑类(10%~18%)纸类(10%~15%)木竹类(0~10%)织物类(0~8%).相同行政区域内村与镇之间生活垃圾组分差异较小,南方村镇生活垃圾全组分的平均含水率大于北方,全国村镇生活垃圾平均含水率为40.1%左右.我国北方生活垃圾热值在4个季节均有81%的村镇超过3 500 k J·kg~(-1),而南方村镇生活垃圾在春、夏、秋、冬这4个季节满足这一条件的村镇分别占44%、50%、61%、72%.垃圾经分选后热值得到提高,但南方村镇春季生活垃圾可燃组分热值仍然偏低,南方其它季节56%以上的村镇和北方全年所有村镇的生活垃圾均能满足焚烧处置的热值要求,故对我国北方农村生活垃圾进行焚烧处置是可行的,而南方村镇生活垃圾需加强前处理工艺.
[Abstract]:In order to understand the compositional characteristics of domestic refuse in villages and towns in China and the feasibility of incineration disposal, a sampling investigation was carried out on 72 village solid waste sources in 12 provinces of China in the spring, summer, autumn and winter of 2015. The mass fraction, moisture content and waste calorific value of the whole and combustible components of MSW were analyzed, and the differences among regions, seasons and villages and towns were analyzed. The results show that the order of combustible mass fraction (wet base) from high to low is as follows: kitchen waste (13) rubber and plastic (10) and plastic (10 ~ (10) and paper (10 ~ (10) wood and bamboo (0 ~ 10 ~ (10) fabric. In the same administrative area, the difference of the components between villages and towns was small. The average moisture content of the whole components of the southern villages and towns was higher than that of the north, and the average moisture content of the whole country was about 40.1%. The calorific value of domestic refuse in northern China is over 3 500 kJ kg ~ (-1) in each of the four seasons, while in the south of China, the four seasons meet this condition in spring, summer, autumn and winter. The calorific value of MSW was increased after sorting, but the calorific value of combustible components of MSW was still on the low side in spring, and the calorific value of MSW in more than 56% of villages and towns in other seasons in southern China and all villages and towns in northern China could meet the calorific requirement of incineration and disposal. Therefore, it is feasible to incinerate and dispose of rural domestic refuse in northern China, but the pretreatment process is needed to be strengthened in southern villages and towns.
【作者单位】：昆明理工大学建筑工程学院;中国环境科学研究院;中国城市建设研究院有限公司;北京科技大学环境工程系;
【基金】：国家科技支撑计划项目(2014BAL02B01) 云南省人培项目(KKSY201306049)
【分类号】：X799.3

【相似文献】