固氮添加剂降低厨余垃圾堆肥中NH_3和H_2S排放

为了降低厨余垃圾堆肥过程中NH3和H2S恶臭气体的排放,该研究通过向堆肥物料中添加H3PO4＋Mg（OH）2、Ca（H2PO4）2、FeCl3和β环糊精4种不同的氮素控制材料,同时以不添加控制材料的处理作为对照,研究控制材料添加对NH3和H2S排放的影响。结果表明控制材料的添加降低了堆肥体系的pH值,明显降低了堆肥物料的损失率;从电导率（electric conductivity）和发芽率指数（germination index）来看,5个处理的堆肥产品均达到腐熟的要求;4种控制材料的添加均不同程度减少了NH3和H2S的排放,但是减排机理不尽相同。总体来看FeCl3对NH3和H2S的控制效果最...

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Bibliographic Details
Published in农业工程学报 Vol. 29; no. 23; pp. 173 - 178
Main Author 张红玉 李国学 袁京 臧冰 杨青原
Format Journal Article
LanguageChinese
Published 2013
Subjects
H2S
NH3
垃圾
堆肥
氮
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Summary:为了降低厨余垃圾堆肥过程中NH3和H2S恶臭气体的排放,该研究通过向堆肥物料中添加H3PO4＋Mg（OH）2、Ca（H2PO4）2、FeCl3和β环糊精4种不同的氮素控制材料,同时以不添加控制材料的处理作为对照,研究控制材料添加对NH3和H2S排放的影响。结果表明控制材料的添加降低了堆肥体系的pH值,明显降低了堆肥物料的损失率;从电导率（electric conductivity）和发芽率指数（germination index）来看,5个处理的堆肥产品均达到腐熟的要求;4种控制材料的添加均不同程度减少了NH3和H2S的排放,但是减排机理不尽相同。总体来看FeCl3对NH3和H2S的控制效果最好,与对照相比,NH3和H2S的累积排放量分别降低了64.2%和52.0%。该研究结果为厨余垃圾堆肥过程中恶臭物质控制材料的筛选提供参考。
Bibliography:In order to reduce odor emissions such as NH3 and H2 S, this study designed experiments to investigate the effects of H3 PO4 ＋Mg（OH）2, Ca（H2 PO4）2, FeCl3, and β cyclodextrin on producing and releasing NH3 and H2 S during kitchen waste composting. The composting treatment without adding chemical materials was used as control. The kitchen waste consisted of 53% vegetation waste, 24% fruit wall, 19% meat, and 4% leaves. For all treatments, cornstalks as an additive using the wet weight ration of 1：5.7 were added to the kitchen waste composting. All treatments were analyzed using 60 L heat insulated composting vessels with forced aeration systems. The vessels were controlled by the C-LGX program, which enables aeration to be controlled automatically by time or inside temperature. Aeration consisted of pumping ambient air into the reactor continuously at a rate of 0.2 L/（kg·min） dry matter. The TKN and TOC were determined according to the Chinese national standard（NY 525-2002）. The pH, EC, and GI were determined i
ISSN:1002-6819