| 基于AHP-PROMETHEE Ⅱ法的鸟粪石磷回收污泥预处理方案决策 |
| 摘要点击 1456 全文点击 622 投稿时间：2019-12-23 修订日期：2020-02-19 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 鸟粪石沉淀法 磷回收 污泥预处理 PROMETHEE Ⅱ 决策分析 |
| 英文关键词 struvite precipitation process phosphorus recovery sludge pretreatment PROMETHEE Ⅱ decision-making |
|
| 中文摘要 |
| 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PROMETHEE Ⅱ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. |
| 英文摘要 |
| 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 evaluations Ⅱ (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. |
