简介:【摘要】餐厨垃圾的随意排放,已被认为是当今主要的环境问题之一。若餐厨垃圾未经处理随意露天摆放,不仅容易滋生蚊虫,传播疾病,危害健康,还严重影响人们的居住环境。本文详细介绍了厌氧消化机制及其不同阶段的过程。水解阶段包括蛋白酶、纤维酶等酶的分泌,将有机固体分解为小分子物质;酸化阶段将小分子有机物氧化为酸性物质;产氢产乙酸阶段将丁酸、丙酸转化为乙酸和氢气;最终,在产甲烷阶段,甲烷菌利用产生的乙酸、小分子有机酸和氢气生成甲烷。对厌氧消化的影响因素进行了深入探讨,特别是pH值、温度和有机负荷率。文章还提到了生物炭和零价铁作为提高厌氧消化效率的物质,通过调节pH值、改善反应体系稳定性和提升甲烷生成效率等方式,为实现环保、高效的厌氧消化提供了新的思路。
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简介:摘要本文对我国城镇污泥泥质现状及厌氧消化处理技术前景进行了总结分析,结果表明我国污泥中含有丰富的有机质氮、磷等营养元素,但同时也含有种类较多含量不等的重金属、有机污染物,为防止污泥导致二次环境污染,必须对其妥善处理与处置。不同区域的经济技术水平、污泥泥质特点均存在很大差异。污泥厌氧消化技术有多种限制性因素和未来应用前景明朗。