Use of additive and pretreatment to control odors in municipal kitchen waste during aerobic composting.
Use of additive and pretreatment to control odors in municipal kitchen waste during aerobic composting.
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DOI：
10.1016/j.jes.2015.03.028
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发表时间：
2015-11
影响因子：
6.9
通讯作者：
Jing Yuan;Q. Yang;Zhiye Zhang;Guoxue Li;Wenhai Luo;Difang Zhang
中科院分区：
文献类型：
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作者：
Jing Yuan;Q. Yang;Zhiye Zhang;Guoxue Li;Wenhai Luo;Difang Zhang
采用实验室规模的堆肥系统研究了在城市餐厨垃圾好氧堆肥前添加膨胀剂和化学预处理对堆肥效果的影响。该系统使用20-L反应器，每次试验持续28天。目的是减少堆肥过程中NH3和H2S的排放。将膨化剂干玉米秸秆与厨房垃圾混合，得到含有15%（湿重）膨化剂的混合物。还进行了组合处理，其中与膨胀剂混合的厨房垃圾用氯化铁（FeCl 3）进行预处理。当材料达到所需的成熟度时，与膨化剂混合的厨余垃圾堆肥产生的渗滤液比单独厨余垃圾少。玉米秸秆的存在也减少了H2S的排放，但对NH3的排放量影响不大。FeCl 3是一种有效的化学絮凝剂，可显著降低NH3和H2S的排放量。与纯厨余垃圾相比，厨余垃圾与玉米秸秆混合后经FeCl 3处理后，NH3和H2S的排放量分别减少了42%和76%。
The effects of adding a bulking agent and chemically pretreating municipal kitchen waste before aerobic composting were studied using a laboratory-scale system. The system used 20-L reactors and each test lasted 28 days. The objective was to decrease NH3and H2S emissions during composting. The bulking agent, dry cornstalks, was mixed with the kitchen waste to give a mixture containing 15% (wet weight) bulking agent. A combined treatment was also conducted, in which kitchen waste mixed with the bulking agent was pretreated with ferric chloride (FeCl3). Less leachate was produced by the composted kitchen waste mixed with bulking agent than by the kitchen waste alone, when the materials had reached the required maturity. The presence of cornstalks also caused less H2S to be emitted, but had little impact on the amount of NH3emitted. The FeCl3was found to act as an effective chemical flocculant, and its presence significantly decreased the amounts of NH3and H2S emitted. Kitchen waste mixed with cornstalks and treated with FeCl3emitted 42% less NH3and 76% less H2S during composting than did pure kitchen waste.