生活垃圾填埋场陈垃圾基本特性及再利用

填埋场已填埋陈垃圾具有丰富的资源 ,我国填埋量已达几千万吨。通过对上海老港生活垃圾填埋场 6年填埋龄和 1 0年填埋龄陈垃圾基本特性的测试研究 ,揭示出填埋 6年以上的陈垃圾已具有相当稳定的性状 ,原始垃圾特征已完全消失 ,开挖后没有异味 ,在组成上除部分大颗粒无机物和大块难降解有机物外 ,其余部分已腐化为类土壤物质 ,可以开采再利用。陈垃圾中类土壤部分在物理化学性质、水力学和微生物学性质上均表现出在自然条件下难以形成的、极为优良的基质特征 ,可用作污染物生物处理基质或作物培育基质。

Basic characteristics and recycling of aged refuse in landfill

It is estimated that at least 100 millions tons of refuse has been placed in landfills in china. The resource of aged refuse is abundant. Some studies on the basic characteristics of aged refuse placed for 6 and 10 years at Shanghai Laogang Refuse Landfill in terms of particle distribution, odor, population of bacteria, moisture, total phosphorus, total nitrogen and Saturated Hydraulic Permeability etc. was carried out. The results show that the aged refuse appears greatly stabilized, has little foul and can be excavated for screening and recycling as recoverable products, after around 6 years of placement at the Landfill. Meanwhile, the finer fractions of the aged refuse look something like high-content-humus soil and has a giant surface area and excellent porosity structure, a wide spectrum and huge quantity of loose micro particles with strong biodegradation capability for some organic matter. It is a kind of fine biological substrate for the effective treatment of pollutants, can be used as biological medium for the effective treatment of some pollution such as waste waters, air. As well as the finer fractions is a kind of excellent cultivating plants soil.