热水解厌氧消化工艺的分析和应用探讨

摘要

热水解厌氧消化工艺可提高污泥的水解效果和有机物降解率，增加沼气产量；杀灭污泥中病菌；缩短厌氧消化的停留时间、提高消化池内的污泥浓度，节省占地面积和土建工程投资；同时使消化后的污泥易于脱水，污泥体积减少。与传统的厌氧消化工艺比较，热水解厌氧消化工艺强化了污泥的减量化、稳定化、无害化和资源化的处理目标，当与后续热干化工艺结合时，可降低运行成本。从热水解技术的原理和形式出发，结合实际工程方案，对热水解厌氧消化工艺的可行性和应用中的问题进行了初步探讨。%The hot hydrolysis-anaerobic digestion process could improve sludge hydrolysis effects and organic matter removal rate,improve methane production,and eliminate germ in sludge.It could also shorten the sludge retention time in anaerobic digestion process,increase the sludge intensity in tank,and save the occupied land area and construction proj ect investment. Meanwhile,it could make the digested sludge easy for dewatering and decrease the sludge volume. Compared with traditional anaerobic digestion process, the hot hydrolysis-anaerobic digestion process could enhance the sludge treatment functions including the reduction,stability,harmless-ness,and resource recovery of sludge.When it was combined with the consequent hot drying process,it could also reduce the operation cost.Based on the principles and style of hot hydrolysis and its application in practical proj ects,this paper discussed the feasibility of hot hydrolysis-anaero-bic digestion process and the problems in its application.