基于AHP-PROMETHEE Ⅱ法的鸟粪石磷回收污泥预处理方案决策  

Decision-making Analysis of Excess Sludge Pretreatment for Struvite Recovery Based on AHP-PROMETHEE Ⅱ Method

作　　者：刘晓蕾 李安婕[1] LIU Xiao-lei;LI An-jie(Key Laboratory of Water and Sediment Sciences of Ministry of Education,State Key Laboratory of Water Environment Simulation,School of Environment,Beijing Normal University,Beijing 100875,China)

机构地区：[1]北京师范大学环境学院,水沙科学教育部重点实验室,水环境模拟国家重点实验室,北京100875

出　　处：《环境科学》2020年第8期3725-3730,共6页Environmental Science

基　　金：国家自然科学基金项目(51478042,51778056)。

摘　　要：磷是一种不可再生资源,采用鸟粪石沉淀法回收剩余污泥中磷已有工程应用.但目前用于释放剩余污泥中碳氮磷便于后续回收的方案很多,不同方案对后续鸟粪石磷回收的影响不同.为了有助于剩余污泥磷回收工艺的决策,本研究以鸟粪石磷回收为目标,选取6种常见的剩余污泥处理方案,构建3层6指标的决策层次分析结构,运用PROMETHEEⅡ偏好关系排序方法,对6种污泥处理方案进行整体评价,从产品品质优先和时间经济优先两个角度出发,选择综合效益最高的方案.在产品品质优先条件下,酶水解以及酶-厌氧处理工艺最优;在时间经济优先条件下,热水解以及热-厌氧处理工艺最优.本研究为通过鸟粪石沉淀法回收剩余污泥中的磷,提供了方案参考以及有效的方案选择办法.Phosphorus is a non-renewable resource.The recovery of phosphorus from excess sludge by the struvite precipitation process has been applied on a full-scale.However,different sludge pretreatment methods have been used to release carbon,nitrogen,and phosphate from excess sludge,which could affect the subsequent struvite precipitation process.In this study,the decision-level analytical structure of the 3-layer and 6-index was constructed to evaluate the effects of six excess sludge treatment processes on struvite recovery.According to the preference ranking organization method for the enrichment of evaluationsⅡ(PROMETHEEⅡ)decision-making analysis,enzymatic hydrolysis or enzymatic hydrolysis-anaerobic fermentation was the better sludge treatment choice for struvite recovery under the"product quality"priority case,while thermal hydrolysis or thermal hydrolysis-anaerobic fermentation could be better under the"time and economy"priority case.This study provides a recommendation for the selection and design of excess sludge treatment for struvite recovery.

关 键 词：鸟粪石沉淀法 磷回收 污泥预处理 PROMETHEEⅡ 决策分析 

分 类 号：X703[环境科学与工程—环境工程]