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优化凝固剂剂量,以提高污泥沉积和随后的无氧消化

Minsu Song¹, Jeonguk Kim², Jihyeon Lee²

¹Institute of Sustainable Earth and Environmental Dynamics (SEED), Pukyong National University, Busan 48547, Republic of Korea.

Bioresource technology

|November 18, 2025

概括

这项研究优化了废水污泥的凝固剂使用. 聚化和聚烯胺 (PAC-PAM) 有效地改善了污泥沉和脱水,同时最大限度地减少了无氧消化中的甲生产损失.

科学领域:

环境工程环境工程
水处理技术水处理技术
废物管理废物管理

背景情况:

有效的污泥管理对于废水处理厂的效率至关重要.
凝固剂的选择显著影响了污泥沉积,脱水和下游过程,如无氧消化.
优化凝固剂剂量和类型对于具有成本效益和可持续的污泥处理至关重要.

研究的目的:

评估不同凝固剂 (聚烯胺,聚化,聚硫酸盐) 对于污泥沉和脱水的有效性.
使用响应表面方法来优化凝固剂剂量,以提高污泥处理性能.
评估凝固剂应用对无氧消化和整体经济可行性的影响.

主要方法:

对五种凝血剂进行选,随后对聚烯胺 (PAM),聚化 (PAC) 和聚硫酸盐 (PFS) 进行详细测试.
响应表面方法的应用,以确定初级和废弃活性污泥的最佳凝固剂剂量.
在无氧消化过程中对超质量,污泥体积指数 (SVI) 和甲产量的评估.

主要成果:

聚化 (PAC) 有效地降低了度和悬浮固体,但增加了污泥体积指数 (SVI).
添加聚烯胺 (PAM) 减轻了初级污泥中SVI的增加,并减少了废弃活性污泥中的SVI.
组合的PAC-PAM添加对甲产量的影响很小,而聚硫酸盐 (PFS) 显著抑制了无氧消化.
经济分析表明,PAC-PAM是最佳选择,治疗成本为10.35美元/m3.

结论:

凝固剂的选择和剂量对于优化废水处理中的污泥沉积和脱水至关重要.
联合使用PAC和PAM提供了一个平衡的方法,改善了污泥的特性,而不会显著地影响无氧消化性能.
这项研究为在综合污泥管理中选择和应用凝固剂提供了实际框架,提高了处理效率和经济可行性.

关键词:

化学凝固剂化学凝固剂能量回收可以回收能量.甲收益率是什么意思响应表面方法响应表面方法污泥管理污泥管理污泥体积指数污泥体积指数

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