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2012年 第6卷 第3期

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《环境科学与工程前沿（英文）》 >> 2012年 第6卷 第3期 doi: 10.1007/s11783-011-0380-9

Characteristics of night soil and leaf co-composting using aerobic static method

1. Guangxi Key Laboratory of Environmental Engineering and Protecting Assessment, Guilin University of Technology, Guilin 541004, China; 2. School of Environment, Tsinghua University, Beijing 100084, China

发布日期： 2012-06-01
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The main purpose of this work is to investigate the characteristics of night soil and leaf co-composting using aerobic static composting method. Three influencing factors, including proportion of night soil and leaf, aeration rate and aeration pattern, were investigated through the evolution of the principal physicochemical properties, i.e., temperature, oxygen consumption rate, organic matters, moisture content, carbon, nitrogen, carbon-to-nitrogen ratio and Germination index (GI). It was found that the 3∶1 (w∶w) mixture of night soil and leaf was capable of achieving the highest composting temperature, longest retention time of high temperature (55°C), and fastest organic matter degradation. The 0.14 m ·min ·m aeration rate was most beneficial to composting, and the mixture of night soil and leaf maintained the highest temperature for the longest duration and achieved the highest CO content and GI. The continuous aeration pattern during composting was superior to an intermittent aeration pattern, since the latter delayed the composting process.

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