污泥性質(zhì)解析及分質(zhì)處理方案

李歡

（深圳市污泥及廚余協(xié)同處置與資源化技術(shù)工程實驗室，清華大學(xué)深圳研究生院，深圳 518055，中國）

摘要：要解決污泥處理難題，需要充分認(rèn)識污泥特性、合理規(guī)劃處理流程。首先解析了污泥貧資源、低熱值和絮體結(jié)構(gòu)等特點，在此基礎(chǔ)上分析了目前污泥處理處置順向設(shè)計的缺點，提出應(yīng)從污泥最終出路出發(fā)進(jìn)行全流程逆向設(shè)計，并以此為指導(dǎo)歸納了污泥處理處置的幾種主要途徑。最后，根據(jù)污泥不同組分在不同處理環(huán)節(jié)存在互相干擾的情況，提出了依次進(jìn)行有機質(zhì)轉(zhuǎn)化、水分分離和無機質(zhì)處置的分質(zhì)處理思路，分析了以預(yù)處理強化厭氧消化為核心的工藝路線潛力和發(fā)展方向。

關(guān)鍵詞：污泥；逆向設(shè)計；分質(zhì)處理；厭氧消化

中圖分類號：X705文獻(xiàn)標(biāo)志碼：A文章編號：

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 forwarddesign of sludge treatment and disposal were further analyzed. Instead, the backwarddesign 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 treatmentDigestion;