• 关键词：翻堆  强制通风静态垛堆肥  物理性质  化学性质

• 基金项目：国家杰出青年基金项目(项目批准号:40325003);国家"863"计划课题;科技部"农业科技成果转化资金"项目;中科博联环保高新技术有限责任公司资助项目

• 陈同斌
• 中国科学院地理科学与资源研究所环境修复中心, 北京 100101

• 罗维
• 中国科学院地理科学与资源研究所环境修复中心, 北京 100101

• 郑国砥
• 中国科学院地理科学与资源研究所环境修复中心, 北京 100101

• 高定
• 中国科学院地理科学与资源研究所环境修复中心, 北京 100101

• 摘要：为了了解翻堆对堆肥过程及理化性质的影响,开展了城市污泥、猪粪强制通风静态垛堆肥试验,试验共设4个处理,分别为升温期(3d)、高温期(10d)、降温期(20d)翻堆处理和不翻堆的对照处理.结果表明:翻堆处理能降低堆肥的挥发性固体含量,减轻其在堆体剖面的差异.升温期翻堆不利于堆体DOC含量的降低及腐熟度的提高.降温期翻堆会减小再次升温速率及其所达到的最高温度.升温期和降温期翻堆,虽然有利于堆体内湿度的均匀分布,但却会缩短高温持续时间、降低堆肥的减容率和脱水率.不同时期翻堆,堆肥的pH和EC有降低的趋势,但总体而言其影响并不是特别明显.在高温期翻堆的处理中高温期持续时间长达15d,堆体减容率高达29%,再次升温的升温速率和所达到的最高温度分别为4℃·d^-1和60.5℃,且与其它处理相比,其堆肥的VS、DOC和湿度都较低,GI较大.由此试验表明,高温期翻堆的堆肥处理能提高强制通风静态垛堆肥的堆肥效率和质量.

• Abstract：Sewage sludge and pig manure were co-composted in static forced-aeration piles for understanding the effects of pile-turnings on chemical and physical properties. Treatments of piles turned at moderate-temperature stage (3d), high-temperature stage (10d), cooling stage (20d), and a pile of control treatment without pile-turning were included in this experiment. The results showed that the contents of volatile solid (VS) in composts and the VSdifferences in profiles of a pile could be reduced in all pile-turning treatments. Dissolved organic carbon (DOC) of compost in the treatment turned at the moderate-temperature stage was lower than that in control treatment and higher than those in the other treatments. The rate of temperature-rising and the value of the maximum temperature after the pile-turning at the cooling stage were lower than those in the other treatments. The distributions of moisture contents in the piles turned at the moderate-temperature and cooling stages were benefited to uniform while the duration of high temperature, the bulk-reducing rate and the dewatering rate of the compost all decreased. Generally speaking, there was a trend of decline in pHand electrical conductivity of compost in all pile-turning treatments. When the treatment turned at the high-temperature stage, the duration of high-temperature reached up to 15 days,the percentage of bulk-reducing was 29%, and the temperature-rising rate and the maximum temperature after the pile-turning were 4℃·d^-1 and 60.5℃, respectively. The minimum values of VS, DOCand moisture content, and the maximum germination index (GI) were found in the composts which the treatment turned at the high-temperature stage. Therefore, it is suggested that pile-turning at high-temperature stage could improve the efficiency and quality of the compost.

• Key words：pile-turning  static forced aeration composting  physical properties  chemical properties

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