Capacitive deionization for nutrient recovery from wastewater with disinfection capability†,Environmental Science: Water Research & Technology

当前位置： X-MOL 学术 › Environ. Sci.: Water Res. Technol. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Capacitive deionization for nutrient recovery from wastewater with disinfection capability†
Environmental Science: Water Research & Technology ( IF 3.5 ) Pub Date : 2017-10-17 00:00:00 , DOI: 10.1039/c7ew00350a
Zheng Ge _{1,

2,

3,

4} , Xi Chen _{1,

2,

3,

4} , Xia Huang _{5,

6,

7,

8,

9} , Zhiyong Jason Ren _{1,

2,

3,

4}

Affiliation

This study demonstrates that capacitive deionization can be effectively used for the removal and recovery of dominant nitrogen (ammonium) and phosphorus (phosphate salts) species present in wastewater. Moreover, low concentrations of chlorine and other oxidants can be generated in situ for disinfection. With an applied voltage from 1.2 V to 3.0 V, salts, ammonium, and phosphorus can be quickly removed from water and adsorbed on the electrodes due to the formation of an electrical double layer, and results show that the removal efficiency was 77.5–91.2% for salts, 60.5–95.7% for ammonium, and 46.4–80.7% for phosphorus, respectively. In addition, most of the adsorbed ions are released back to the concentrate during regeneration, so high nutrient recovery can be accomplished as well. Such a simple electrochemical process can be promising to solve both nutrient and salinity problems after biological treatments for discharge and reuse, and the additional disinfection function adds further benefits to improve water quality and safety with low cost.

中文翻译：

电容去离子，用于具有消毒能力的废水中的营养物回收†

这项研究表明，电容去离子可有效地去除和回收废水中存在的主要氮（铵）和磷（磷酸盐）种类。此外，原位会产生低浓度的氯和其他氧化剂进行消毒。在1.2 V至3.0 V的施加电压下，由于形成了双电层，因此可以快速从水中去除盐，铵和磷，并吸附在电极上，结果表明去除效率为77.5–91.2％盐，铵分别为60.5–95.7％和磷为46.4–80.7％。此外，大多数吸附离子在再生过程中会释放回浓缩物中，因此也可以实现较高的养分回收率。这种简单的电化学过程有望解决生物处理后排放和再利用后的养分和盐分问题，并且附加的消毒功能以低成本提高了水质和安全性。

更新日期：2017-10-17

点击分享查看原文

点击收藏

阅读更多本刊最新论文