家庭厨余垃圾论文:厨余垃圾混合厌氧消化试验研究
【中文摘要】近年来,随着我的提高,厨余垃圾与猪粪的污染已经成为环保部门面临的亟须解决的问题。本论文选取家庭厨余垃圾和猪粪为原料,进行不同进料VS浓度下的中温混合厌氧消化试验,研究进料VS浓度对厌氧消化反应中的pH值、总碱度、VFA、氨氮、产气量和产甲烷率等指标的影响,分析系统的稳定性能和产气性能,寻找厌氧处理的最佳运行条件。试验表明:消化体系的pH值随着进料VS浓度的增加而逐渐增大,;VFA的浓度随进料VS浓度的增加而逐渐增大,/(L·d)时,VFA浓度可积累到900mg/L以上;氨氮浓度随进料VS浓度增加而在1355~2420mg/L之间波动;~ gVS/(L·d)时运行稳定。系统的C、N营养元素随进料VS浓度的增加而得到补充,C/N比值升高。厌氧消化体系日产气量从815mL逐渐增加,最高达4550mL;~/(L·d)时,~, gVS/(L·d)时,。产甲烷率因C/N的改善而得到提高,最高为1968mL·g1VS,五种进料VS浓度下的平均产甲烷率分别为1376、1556、1523、1111和660 rnL·g-1VS。
【英文摘要】In recent years, with the accelerated urbanization and the improvement of living standards in china, it has e an urgent problem facing the pollu
tion of kitchen waste and pig manure to environmental protection departments. Taking the kitchen waste and pig manure as the experimental raw materials, the basic datum of several experimental indexes, such as pH value, total alkalinity, VFA, ammonia-nitrogen, production rate of gas, production rate of methane etc. are obtained under different OLR value at the medium temperature (37℃±1℃) and the stability of the system performance and gas production properties are analyzed in this thesis. Meanwhile, the best operating conditions of anaerobic treatment are experimental results show that the pH value of the digestive s
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