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使用酸盐或酸盐阳极溶液改善过剩的污泥无氧消化中的酸性生产

Ning Wang^1,2, Weihua Xu¹, Wenhai Wang³

¹School of Municipal and Environmental Engineering, Institute of Resource and Environmental Innovation, Shandong Jianzhu University, Jinan, People's Republic of China.

Environmental technology

|December 20, 2025

概括

酸盐阳极溶液 (FAS) 为污泥预处理提供了与固体酸盐 (K₂FeO₄) 相比的经济有效的替代品. 在较低的剂量下,FAS可提高无氧酸的产生和污泥脱水效率.

科学领域:

环境工程环境工程
水处理处理水的方法
废物管理废物管理

背景情况:

酸盐 (K₂FeO₄) 是一种常见的污泥消化预处理剂.
固体K₂FeO₄合成是昂贵的,需要具有成本效益的替代品.
酸盐阳极溶液 (FAS) 是K₂FeO₄生产的中间副产品.

研究的目的:

评估酸盐阳极溶液 (FAS) 作为固体酸盐 (K₂FeO₄) 的经济替代品.
为了比较FAS和固体K₂FeO₄在污泥预处理中的有效性.
评估对无氧酸生产和污泥脱水的影响.

主要方法:

对FAS和固体K的性能进行比较.
污泥溶性化学氧需求 (SCOD) 和短链脂肪酸 (SCFA) 生产的分析.
评估蛋白质和多糖的释放.
评估污泥沉和排水特性.

主要成果:

10毫升/升的FAS显著增加了SCOD至3807毫克/升,SCFA产量增加到2142毫克COD/升.
与高剂量的K₂FeO₄相比,FAS实现了更高的蛋白质和多糖释放效率.
泥沉积得到改善,沉积率降低了9.1%.
在FAS预处理后,蛋糕的水分含量下降了9.7%.

结论:

在污泥预处理中,FAS是固体K₂FeO₄的有效和经济的替代品.
FAS在低剂量下表现出高效率,增强了酸的产生和脱水.
使用FAS作为中间副产品提供了一个可持续的污泥处理选项.

关键词:

过量的污泥污泥无氧消化消化无氧消化铁酸盐阳极溶液 (FAS) 的使用酸铁酸盐 (K2FeO4) 是一种酸盐.短链脂肪酸 (SCFA) 是一种

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