通过添加改性和热改性饮用水处理污泥来进行沉积物固定化的比较研究

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Updated: Jul 28, 2025

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Fei Sun¹, Yu Chen², Liwenze He³

¹School of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 610031, People's Republic of China.

Environmental science and pollution research international

|June 4, 2023

概括

用兰改性饮用水处理污泥 (DTSLa) 有效地固定沉积物中的,将各种形式转化为稳定的结合. 这减少了释放到上面的水中,使得DTSLa与热修饰污泥相比,是一个优越的沉积物调节剂.

科学领域:

环境科学环境科学
水处理处理水的方法
环境化学环境化学

背景情况:

沉积物中过度释放的有助于优化.
饮用水处理污泥 (DTS) 是修复的潜在资源.
修饰DTS,如修饰 (DTSLa) 和热修饰 (TDTS),被研究固定.

研究的目的:

评估DTSLa和TDTS在吸附酸盐和控制沉积物中释放的有效性.
探索DTSLa和TDTS在沉积物上的固定机制.
为了比较DTSLa和TDTS作为沉积物调节剂的性能.

主要方法:

来自DTS的DTSLa和TDTS的制备.
在不同的污泥剂量 (0%,2.5%,5%) 的吸附和受控释放实验.
使用SEM,BET,XRD,FTIR和XPS进行表征,以阐明固定机制.

主要成果:

TDTS将松散吸附,二碳酸盐-二二酸盐可提取和有机转化为稳定的金属氧化物结合.
DTSLa将这些形式以及金属氧化物结合转化为更稳定的结合.
DTSLa和TDTS都减少了水溶性和NaHCO3可提取,抑制了从沉积物释放到覆盖水中.

结论:

DTSLa和TDTS有效降低沉积物和间歇水中的度,减轻释放风险.
与TDTS相比,DTSLa对内源具有更高的吸附能力和固定效应.
DTSLa是一种更适合的沉积物调节剂,用于控制水和沉积物含量.

关键词:

吸附方式吸附方式吸附方式饮用水处理污泥饮用水处理污泥内生的是一种内生.兰的修改方法热修饰是一种热修饰.

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