污泥性质解析及分质处理方案
李欢，刘跃岭
（深圳市污泥及厨余协同处置与资源化技术工程实验室，清华大学深圳研究生院，深圳 518055，中国）
摘要：要解决污泥处理难题，需要充分认识污泥特性、合理规划处理流程。首先解析了污泥贫资源、低热值和絮体结构等特点，在此基础上分析了目前污泥处理处置顺向设计的缺点，提出应从污泥最终出路出发进行全流程逆向设计，并以此为指导归纳了污泥处理处置的几种主要途径。最后，根据污泥不同组分在不同处理环节存在互相干扰的情况，提出了依次进行有机质转化、水分分离和无机质处置的分质处理思路，分析了以强化厌氧消化为核心的工艺路线潜力和发展方向。
关键词：污泥；逆向设计；分质处理；厌氧消化
中图分类号：X705 文献标志码：A 文章编号：
Sludge characterization and its fractionated treatment system
LI Huan, FENG Kai, LIU Sai
(Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Graduate School at Shenzhen, Shenzhen 518055, China)
Abstract: To solve the problem of sludge treatment and disposal, it is necessary to fully understand sludge characteristics and plan treatment processes reasonably. The analyses indicated that sludge has the characteristics of poor resources, low calorific value and floc structure. Based on these characteristics, the shortcomings of current forward design of sludge treatment and disposal were further analyzed. Instead, the backward design of the whole processes should be carried out from the final solutions of sludge. Following the guide, several main routes of sludge treatment and disposal were summarized. In these routes, there is mutual interference between different components of sludge in different processing sectors. Hence, the idea of fractionated treatment systems were put forward to avoid the interference and increase the efficiency of sludge treatment. In these systems, organic matter conversion, water separation and inorganic disposal or utilization were carried out in turn. The system composed of advanced anaerobic digestion with pretreatment, deep dewatering, and landfill or utilization could be a case in point, and its potential and direction of development were discussed.
Keywords: Sludge; Backward design; Fractionation treatment Digestion;
