摘要
厌氧消化是实现污泥的减量化、稳定化和资源化的重要手段,相对于传统的低浓度污泥厌氧消化工艺高固体污泥厌氧消化可以直接利用污水处理厂排放的脱水污泥,具有设施体积小、单位容积产气率较高和水耗及能耗较低等优势。本文综述了近年来污泥高固体消化的研究进展,从污泥高固体厌氧消化的基本特征出发,总结了污泥高固体厌氧消化的影响因素和对反应器的要求;同时对污泥高固体消化存在的搅拌不匀、传质传热困难、有机质降解率偏低、搅拌系统不成熟等问题作了简要分析,这些问题都还有待于深入研究解决。
Anaerobic digestion is an important method to realize sludge reduction, stabilization and resource recovery. Compared to traditional low-solids anaerobic digestion, high-solids anaerobic digestion （ HLAD ） can utilize dewatered sludge discharged from wastewater treatment plant directly. It uses smaller reactors, has higher production rate of biogas per unit of volume, and consume less energy and water. This paper reviewed the research progress of HLAD in recent years, including characteristics of HLAD, influencing factors of HLAD and requirements on reactor. Meanwhile, some limits of HLAD, such as difficulty on mass and heat transfer, low organic reduction rate have been discussed.
出处
《四川环境》
2013年第6期118-121,共4页
Sichuan Environment
基金
水体污染控制与治理科技重大专项课题(2011ZX07302-001)
国家自然科学基金(51008174)
关键词
污泥
厌氧消化
高负荷
高固体
沼气
Sludgel
anaerobic digestion
high-load
high-solid
biogas
