Electrochemical technology for denitrification of tail water from wastewater treatment plant

LI Desheng; FAN Taixing; SHEN Yanbing; WU Weizhong

doi:10.3969/j.issn.0438-1157.2013.03.042

您当前的位置：

首页 >

文章列表页 >

Electrochemical technology for denitrification of tail water from wastewater treatment plant

更新时间：2025-12-10

- Electrochemical technology for denitrification of tail water from wastewater treatment plant
- CIESC Journal Issue 3, Pages: 1084-1090(2013)
- 作者机构：
  
  1. 北京交通大学土木建筑工程学院,北京,100044
  2. 北京大学环境科学与工程学院,北京,100871
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.03.042
  CLC： 703
- Online First：05 March 2013，
  
  Published：05 March 2013
- 稿件说明：
移动端阅览
LI Desheng, FAN Taixing, SHEN Yanbing, et al. Electrochemical technology for denitrification of tail water from wastewater treatment plant[J]. CIESC Journal, 2013, (3): 1084-1090.
DOI：

LI Desheng, FAN Taixing, SHEN Yanbing, et al. Electrochemical technology for denitrification of tail water from wastewater treatment plant[J]. CIESC Journal, 2013, (3): 1084-1090. DOI： 10.3969/j.issn.0438-1157.2013.03.042.

摘要

污水处理厂尾水中因可生物降解的有机物含量较低

无法实现生物深度脱氮

外排仍含有较高浓度的总氮

若排入河流会引起富营养化

因此深入研究尾水的深度脱氮技术具有重要意义。采用催化电氧化技术

以污水处理厂尾水为研究对象

研究了在电流密度、水力停留时间(HRT)、进水pH值等因素的影响下

尾水中总氮的去除。结果表明

催化电氧化技术在电流密度为32.67 mA·cm-2、进水pH值为6.25～7.02、HRT为30 min时

总氮(TN)从26.40 mg·L-1降至11.91 mg·L-1

NO3--N从18.03 mg·L-1降至4.90 mg·L-1

去除率分别可达到54.9%和72.8%;TN的脱除主要以硝氮(NO3--N)的去除为主。催化电氧化技术能高效去除污水厂尾水中的总氮

且具有运行稳定和抗冲击等优点。为污水处理厂尾水的电化学深度脱氮提供了理论基础。

Abstract

It is difficult to achieve biological deep denitrification of wastewater due to low content of biodegradable organic matter in tail water from sewage treatment plant.If the tail water discharged into rivers

the eutrophication could be produced due to higher concentration of total nitrogen.Therefore

the study on deep denitrification technology is of important significance for tail water treatment.In this paper

the total nitrogen(TN) removal efficiency of a catalytic electric-oxidation technology and its influence factors

such as electric-current density

HRT

influent pH

etc.

were studied and analyzed.The results showed that total nitrogen can be decreased to 11.91 mg·L-1 from 26.40 mg·L-1(54.9%)

NO3--N to 4.90 mg·L-1 from 18.03 mg·L-1(72.8%) by the catalytic electric-oxidation technology at conditions of current density 32.67 mA·cm-2

pH 6.25—7.02

and HRT 30 min.The NO3--N removal is dominating in the TN removal of tail water from urban wastewater treatment plant.The results indicate that TN of tail water can be removed efficiently by this technology.The catalytic electric-oxidation technology is of the advantages of operation stability and shock resistance etc.

and could be a basis for advanced nitrogen removal of tail water from wastewater treatment plant.

关键词

Keywords

references

Views

472

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

New universal corresponding state equation for correlation and extrapolation of saturated vapor-liquid density

Study on microstructure of NaCl solution ice centrifugal separation based on Micro-CT and deep learning

A hybrid modeling and optimization strategy for sequential simulated moving bed

Performance study of gas-liquid vortex separators under low cross-sectional gas velocity

Progress of solar photo-thermo-catalysis for ammonia synthesis and decomposition under mild conditions

Related Author

No data

Related Institution

No data

⁰