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A STUDY ON REDUCTION AND STBILIZATION OF LANDFILL WASTES IN FINAL DISPOSAL SITE

垃圾填埋场废物最终处置场的减量化和稳定化研究

基本信息

批准号：
07650640
负责人：
IMAOKA Tsutomu
金额：
$ 1.41万
依托单位：
HIROSHIMA UNIBAERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07650640/
关键词：
municipal waste disposal site landfill wastes high salinity of leachate electrostatic precipitator ash leaching test trihalomethane chelate solution washing method 浸出水の高塩化類化一般廃棄物最終処分場中間処理塩類 THMFP

项目摘要

Recently, because of the rapid increase of the incineration facility for the treatment of municipal solid wastes, the ratio of incineration recidues in the landfill wastes has been increasing. Therefore, the leachate from waste disposal site has become to be rich in salts and inorganic ions. It causes various problems such as calcium scale formation and corrosion of metal equipment.In this study, the seasonal variation of the water quality of leachate and treated leachate was studied by sampling once a month during one and a half year from August, 1995. In addition, the leaching properties of various kinds of landfill wastes were investigated by means of leaching test. As a result, it was confirmed that the leachate from researched landfill site had high trihalomethnes formation potentinal and its main component was bromine compounds. It was also found that the leachte contained copious salts and the cause of the high salinity was the salts contained in electrostatic precipitator ash (EP ash).From the result mentioned above, we proposed a chelate solution washing method for EP ash as intermediate treatment, and investigated its performance. The results suggested if EP ash which was treated by this method was reclaimed, it was calculated that about 70% of salts in leachate would be removed and about 5.5% of volume of landfill wastes would be reduced in this waste disposal site. The conclusion was that this method was simple and effective as intermediate treatment of landfill wastes.

近年来，随着城市生活垃圾焚烧处理设施的迅速增加，垃圾焚烧残渣在填埋垃圾中所占的比例也在不断增加。因此，垃圾填埋场的渗滤液中含有丰富的盐类和无机离子。本研究从1995年8月开始，在一年半的时间里，每月取样一次，研究了渗滤液和处理后渗滤液水质的季节变化。此外，通过淋溶试验，考察了不同类型垃圾的淋溶特性。结果表明，垃圾填埋场渗滤液具有较高的三卤甲烷生成潜力，其主要成分为溴类化合物。结果表明，电除尘器灰含盐量高，是造成电除尘器灰含盐量高的主要原因，据此提出了电除尘器灰的螯合液洗涤中间处理方法，并对其性能进行了考察。结果表明，经该方法处理后的EP灰，若进行回用，可去除渗滤液中约70%的盐分，减少填埋场垃圾体积约5.5%。结果表明，该方法是一种简单、有效的填埋垃圾中间处理方法.