从二次废水中去除酸盐的低成本和可持续的解决方案:巨孔离子交换树脂处理
Bizhen Zeng1, Bingchi Tao2, Zhenxiang Pan1
1College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China; Key Laboratory of Watershed Earth Surface Processes and Ecological Security, Zhejiang Normal University, Jinhua, 321004, China.
Journal of environmental management
|October 7, 2023
概括
巨孔离子交换树脂有效地从废水中去除和. 这种低成本的方法为先进的废水处理提供了切实可行的解决方案,实现了高清除率和稳定的运行.
科学领域:
- 环境科学 环境科学
- 水处理技术 水处理技术
- 吸附科学 吸附科学
背景情况:
- 废水处理厂 (WWTP) 的二次废水通常含有 (N), (P) 和耐火有机化合物等污染物.
- 传统的生化去除工艺对于深度处理的效率可能受到限制.
研究的目的:
- 评估巨孔离子交换树脂作为先进去除N,P和有机化合物的WWTP二次废水的替代方案.
- 为了优化吸附条件并阐明吸附机制.
主要方法:
- 在各种条件下优化吸附性能.
- 使用异热合,热力学计算和动力学分析进行机制探索.
- 一个树脂脱系统的试点规模测试.
主要成果:
- 树脂对酸盐 (NO3−) 具有很高的选择性,在25°C时的平衡吸附能力为9.8924 mg/g.
- 试点工厂实现了稳定的运行,消除了COD (41.65%),TP (42.96%),NH4+-N (55.37%),NO3−-N (91.8%) 和TN (90.81%). 试点工厂实现了稳定的运行,消除了COD (41.65%),TP (42.96%),NH4+-N (55.37%),NO3−-N (91.8%) 和TN (90.81%).
- 再生树脂保持了NO3−-N和TN的高去除率 (>90%),再生回收率也高于90%.
结论:
- 巨孔离子交换树脂为二次废水的深度处理提供了一种高效和实用的方法.
- 低的治疗成本 (0.104美元/m3) 使其成为WWTPs经济可行的选择.
- 这项研究为先进的废水处理工程提供了宝贵的见解和理论指导.
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