从具有挑战性的水矩阵中几乎完全回收,使用从水处理残留物 (WTR) 制成的多用途陶矿
Jianfei Chen1, Jinkai Xue1, Jinyong Liu2
1Cold-Region Water Resource Recovery Laboratory (CRWRRL), Environmental Systems Engineering, Faculty of Engineering & Applied Science, University of Regina, Regina, SK S4S 0A2, Canada.
Water research X
|November 11, 2024
概括
研究人员将盐水处理残留物 (Al-WTR) 转化为陶石 (ASC),以有效回收酸盐. 这种环保材料为复杂的水处理和资源回收提供了具有成本效益的解决方案.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 水处理技术水处理技术
背景情况:
- 水处理残留物 (WTR) 给水处理厂带来了重大管理挑战和成本.
- 盐WTR (Al-WTR) 是一种常见的废物,需要可持续的管理策略.
- 水体中的酸盐污染需要有效的回收方法.
研究的目的:
- 从Al-WTR开发一种用于酸盐回收的新型陶岩材料 (ASC).
- 评估ASC的吸附能力和效率,以从具有挑战性的水矩阵中去除酸盐.
- 评估ASC作为酸盐吸附剂的经济可行性和环境效益.
主要方法:
- 通过特定的工艺将Al-WTR转化为陶矿 (ASC).
- ASC的表征,包括特定表面积 (SSA) 的测量.
- 酸吸附实验涉及广泛的pH值范围,并且存在竞争性离子和酸.
- 在低温下测试ASC性能,使用真正的市政废水.
- 经济分析比较ASC与现有材料.
主要成果:
- ASC显示出高的SSA (70.53 m2/g) 和吸附能力 (47.2 mg P/g).
- 在pH值3-11范围内,酸回收率超过94.9%,对竞争的离子和酸有持续的性能.
- 在10°C的实际市政废水中,同时证明了酸盐 (>97.1%) 和COD (71.2%) 的去除.
- 在酸盐和后,ASC显示出重新利用的潜力,例如用于景观设计或土壤修改.
结论:
- ASC是一种环保且具有成本效益的吸收剂,用于从具有挑战性的水域中恢复酸盐.
- 开发的材料为水部门的循环经济提供了一个有前途的途径.
- ASC为传统材料提供了有竞争力的替代品,例如以粘土为基础的陶石和生物炭.
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