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有机生活垃圾堆肥中物质组分减量差异及变化规律

夏芸 林辉 王强 马军伟 叶静 符建荣

农业环境科学学报Issue(12):2463-2471,9.
农业环境科学学报Issue(12):2463-2471,9.DOI:10.11654/jaes.2014.12.026

有机生活垃圾堆肥中物质组分减量差异及变化规律

Differential Reduction of Different Components of Domestic Organic Wastes During Composting Process

夏芸 1林辉 2王强 3马军伟 3叶静 3符建荣3

作者信息

  • 1. 浙江师范大学化学与生命科学学院,浙江 金华 321004
  • 2. 浙江省农业科学院环境资源与土壤肥料研究所,杭州 310021
  • 3. 浙江省农业科学院环境资源与土壤肥料研究所,杭州 310021
  • 折叠

摘要

Abstract

Kitchen wastes and straw represent major percentages in domestic wastes generated in the rural areas. A co-composting experi-ment of kitchen wastes and rice straw was performed under different conditions to investigate reduction behaviors of different components during composting and relationships between main composting factors and material consumption. The results indicated that the force aera-tion treatment without any exogenous inocula(T2)had the maximum reduction in the total fresh substance, followed by the force aeration treatment with one type of exogenous microbial inocula(T3), the treatment without any aeration or exogenous inocula(T1), and the force aeration treatment with two types of exogenous inocula(T4). For the force aeration treatments, the stage from 7 d to 13 d had the highest re-duction of the fresh wastes throughout the composting. The decrease in the total weight of the fresh substances was attributed to the water loss in all treatments, but different treatments had different preferred ways of water removal. The addition of exogenous microbial inocula did reduce the leachates and increase the percentages of evaporated water. The consumption of the chemical elements of dry substances varied among different treatments. Both carbon loss/dry substance loss ratios and hydrogen loss/dry substance loss ratios were in order of T4﹥T3﹥T2﹥T1;the oxygen loss/dry substance loss ratios exhibited the opposite order among the treatments. In addition, the carbon consumption in all treatments mainly happened at the stage of 0~13 d, which accounted for more than 60%of the total carbon consumption. The RDA analy-sis indicated that temperature and bacteria had the most significant influences on the reduction behaviors of materials. The composting tem-perature associated highly with the reduction of the total fresh substance and water loss, while the population of bacteria, actinomycetes and fungi had the strongest relationship with the dry matter loss, the hydrogen element loss and the oxygen element loss, respectively. These re-sults can provide some theoretical guidance for leachate discharge, element loss control and process improvement in the composting process.

关键词

堆肥/物质元素/减量机制/冗余分析

Key words

composting/elementary substance/reduction mechanism/redundancy analysis

分类

资源环境

引用本文复制引用

夏芸,林辉,王强,马军伟,叶静,符建荣..有机生活垃圾堆肥中物质组分减量差异及变化规律[J].农业环境科学学报,2014,(12):2463-2471,9.

基金项目

国家科技支撑计划 ()

农业环境科学学报

OA北大核心CSCDCSTPCD

1672-2043

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