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关于化学调节对溶解有机转化和污泥堆肥过程中的生物可用性的影响的分子见解

Boyuan Yang¹, Yu Zhang¹, Zexu Chen¹

¹School of Environmental Studies, China University of Geosciences, Wuhan 430074, Hubei, China.

Bioresource technology

|May 9, 2024

概括

聚硫酸盐 (PFS) 增强了有机 (OP) 在堆肥中的转化,使其成为更好的肥料. 聚化 (PAC) 抑制了废物活性污泥 (WAS) 中的这一关键过程.

科学领域:

环境科学环境科学
土壤科学土壤科学
生物化学生物化学

背景情况:

废物活性污泥 (WAS) 富含有机 (OP),是一种潜在的缓释肥料.
在污泥脱水中使用的聚化 (PAC) 和聚硫酸盐 (PFS) 等化学凝固剂会留下影响堆肥质量的残留物.
了解这些凝固剂对OP生物转化的影响对于可持续的污泥管理和回收至关重要.

研究的目的:

研究PAC和PFS在污泥堆肥过程中溶解的有机 (DOP) 的生物转化的影响.
阐明由化学条件影响的DOP转化背后的分子机制.
评估调节对DOP生物可用性对潜在的肥料应用的影响.

主要方法:

用PAC和PFS调节的WAS进行堆肥.
使用先进的分析技术分析DOP转换和分子变化.
酶性水解实验验验证DOP的生物可用性.

主要成果:

在污泥堆肥过程中,PFS调节促进了DOP的转化并提高了DOP的生物可用性.
PAC调节抑制了DOP的生物转化和生物可用性.
在热性阶段,PFS促进了生物活性OP分子的生成,例如1-基-3,4-二醇-5-酸盐和D-利博 5-酸盐.

结论:

PFS调节对DOP的生物转化和在堆肥中的生物可用性产生积极影响,这表明它对回收的有用性.
PAC调节对DOP转化产生负面影响,可能降低堆肥污泥的肥料价值.
这项研究提供了分子层面的见解,了解化学凝固剂如何影响污泥堆肥过程中的循环.

关键词:

堆肥堆肥是为了堆肥.有机是一种有机.聚氨酸化物聚氨酸化物聚二硫酸铁酸盐的使用情况废弃的活性污泥废弃物

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