连续流系统的特征参数的多变量优化,用于工业反透缩处理的前缓冲箱
Shida Li1, Fantang Zeng1, Shaokui Zheng2
1The Key Laboratory of Water and Air Pollution Control of Guangdong Province, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, No. 18 Ruihe Road, Guangzhou, 510530, China.
Chemosphere
|June 2, 2023
概括
电化学氧化通过优化电流密度和流速等参数,有效地处理工业逆透缩物 (ROC). 这种方法提高了污染物去除和能源效率,同时尽量减少有害的副产品.
科学领域:
- 环境工程 环境工程
- 电化学 电化学 电化学
- 水处理 处理水的方法
背景情况:
- 工业逆透缩物 (ROC) 由于高盐度和污染物负载,存在重大处置挑战.
- 传统的治疗方法经常与ROC的复杂矩阵作斗争.
- 电化学氧化为处理像ROC这样具有挑战性的废水流提供了一个有希望的替代方案.
研究的目的:
- 为了优化工业ROC处理的电化学氧化参数,使用连续流系统.
- 调查各种操作参数对污染物去除,能源效率和副产品形成的影响.
- 开发统计验证的模型来预测治疗效果.
主要方法:
- 使用了连续流动的电化学系统和前面的缓冲箱.
- 采用多变量优化技术,包括基于响应表面方法 (RSM) 的普莱克特-伯曼 (PBD) 和中央复合设计 (CCD).
- 研究的参数包括循环回收率 (R),缓冲箱与电解区比率 (RV),电流密度 (i),流入线性速度 (v) 和电极间距 (d).
主要成果:
- 再循环比率 (R),流入速度 (v) 和电流密度 (i) 显著影响了化学氧气需求 (COD) 和NH4+-N去除,以及废水活性物种 (ACS).
- 电极间距和RV值对治疗效率的影响微不足道.
- 优化的参数 (v=1.2 cm/h,i≥8 mA/cm2,d≥4,RV=10-20,R=1) 实现了优越的废水质量,减少了污染物,ACS和有毒副产品.
结论:
- 多变量优化成功地确定了通过电化学氧化有效处理ROC的关键参数.
- ROC中的高化物含量有助于ACS生成和质量转移,而优化的液压保留时间提高了反应效率.
- 开发的模型经过统计验证,证实了它们对预测治疗结果和指导操作调整的可靠性.
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