预处理沼液与餐厨废弃物的厌氧产气发酵特性

发布时间：2018-04-23 08:45

本文选题：餐厨废弃物 + 沼液　；参考：《环境工程学报》2017年08期

【摘要】：为了实现对餐厨废弃物能源化的梯度利用,将沼液进行水浴加热、超声波和曝气等预处理后与餐厨废弃物混合,在中温(35±1)℃条件下进行产氢和产甲烷梯度厌氧发酵实验。考察了不同预处理沼液对产氢率、产氢相缓冲能力、产氢过程可溶性代谢产物成分以及其进行产甲烷发酵的潜力。结果表明,未经处理的沼液与餐厨废弃物混合发酵的产氢率很低,并且相分离不彻底有甲烷产生;各预处理组的产氢率均明显高于未处理组,并很少或几乎没有甲烷产生,其中超声波处理组产氢率最高为52.3 m L·g~(-1)VS。水浴加热和超声波处理组的产氢流出液经产甲烷发酵,可以获得与餐厨废弃物直接进行产甲烷发酵相当的甲烷产率。这表明,将餐厨废弃物进行产氢和产甲烷梯度厌氧发酵可获得更高的能源化效率。
[Abstract]:In order to realize the gradient utilization of food waste energy, the biogas liquid was heated in water bath, the ultrasonic and aeration were mixed with the kitchen waste. The hydrogen production and methane production gradient anaerobic fermentation were carried out under the medium temperature (35 + 1) C. The hydrogen production rate, the hydrogen producing phase buffer capacity and the hydrogen production process were investigated. The results show that the hydrogen production rate of mixed fermentation of untreated biogas slurry and kitchen waste is very low, and the phase separation is not completely methane production; the hydrogen production rate of each pretreatment group is obviously higher than that of the untreated group, and there are few or almost no methane production, in which the ultrasonic is at the ultrasonic site. The highest hydrogen production rate of the group is 52.3 m L. G~ (-1) VS. water bath heating and ultrasonic treatment group of hydrogen production from methane fermentation. It can obtain methane production of methane fermentation with kitchen waste directly. This shows that the hydrogen production and methane production by anaerobic fermentation of methane production can obtain higher energy efficiency.

【作者单位】：东北农业大学工程学院;
【基金】：“十二五”农村领域国家科技支撑项目(2014BAD02B04) 东北农业大学博士后启动基金项目(2012RCB72) 哈尔滨市应用技术研究与开发项目(2013RFQXJ094)
【分类号】：TQ116.2;TQ920.6;X70

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