水解反硝化工艺强化脱氮处理

doi:10.3969/j.issn.0438-1157.2013.06.039

化工学报 ›› 2013, Vol. 64 ›› Issue (6): 2194-2200.DOI: 10.3969/j.issn.0438-1157.2013.06.039

水解反硝化工艺强化脱氮处理

宋英豪¹, 王敏², 熊娅², 杜理智³, 林秀军², 梁康强²

1. 北京化工大学工程技术研究院, 北京 100029;
2. 北京市环境保护科学研究院, 北京 100037;
3. 华中科技大学环境科学与工程学院, 湖北武汉 430074

收稿日期:2012-10-05 修回日期:2012-11-22 出版日期:2013-06-05 发布日期:2013-06-05
通讯作者: 王敏。第一作者:宋英豪(1975—),男,博士,教授。
作者简介:宋英豪(1975—),男,博士,教授。
基金资助:
国家高技术研究发展计划项目(2009AA063802);国家水体污染控制与治理科技重大专项(2009ZX07317-008-01)。

Strengthening denitrification by hydrolysis-denitrification technology

SONG Yinghao¹, WANG Min², XIONG Ya², DU Lizhi³, LIN Xiujun², LIANG Kangqiang²

1. High Technology Research Institute, Beijing University of Chemical Technology, Beijing 100029, China;
2. Beijing Municipal Research Institute of Environmental Protection, Beijing 100037, China;
3. School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China

Received:2012-10-05 Revised:2012-11-22 Online:2013-06-05 Published:2013-06-05
Supported by:
supported by the High-tech Research and Development Program of China(2009AA063802).

摘要/Abstract

摘要： 碳源对脱氮除磷都具有重要的作用,碳源不足会导致脱氮效果降低,出水TN水质不达标。为解决碳源不足造成的脱氮能力差的问题,本试验采用水解反硝化脱氮工艺,将水解酸化与反硝化脱氮过程相结合,取代缺氧反硝化,有效地解决了碳源不足所导致的脱氮效果差的问题。利用水解反硝化脱氮工艺处理城市污水,出水NH₄⁺-N、TN和COD都满足一级A标准,去除率分别为98.0%、69.4%和82.7%,比同期污水处理厂AAO工艺的TN去除率高出17.5%。在BOD₅/TN为3～5的条件下,水解池中污泥的比反硝化速率为缺氧池污泥的1.2～1.7倍,并且去除相同的N所需要的碳源较少,在碳氮比为3:1、3.5:1、4:1和5:1时去除单位N水解池可分别节省59.5%、52.2%、19.9%和23.1%的COD,有效地解决了脱氮过程中碳源不足问题。

关键词: 水解, 反硝化, 碳源, 碳氮比

Abstract: Carbon source plays an important role in nitrogen and phosphorus removal for municipal sewage treatment, and the deficiency of carbon source can lead to decreasing nitrogen removal and unqualified TN of effluent.To solve the problem of poor nitrogen removal capacity caused by insufficient carbon source,the experiment adopted the hydrolysis-denitrification technology, in which a combination of hydrolytic acidification and denitrification replaced anoxic-denitrification, and effectively solved the problems.As the use of the hydrolysis-denitrification technology to treat municipal sewage, NH₄⁺-N, TN and COD of effluent all met the standard A, with removal rates of 98.0%, 69.4% and 82.7% respectively.TN removal rate was 17.5% higher than the sewage treatment plant by AAO process in the same period.With BOD₅/TN 3 to 5, sludge denitrification rate in the hydrolysis tank was 1.2 to 1.7 times than that in the anoxic tank, less carbon source was needed to remove the same N.When BOD₅/TN was 3:1, 3.5:1,4:1 and 5:1, for the removal of unit N utilization of COD by denitrification bacteria in the hydrolysis tank could be saved by 59.5%, 52.2%, 19.9% and 23.1% respectively, which effectively solve the problem of the lack of carbon source in the denitrification process.

Key words: hydrolysis, denitrification, carbon source, carbon and nitrogen ratio

中图分类号:

X703.1

宋英豪, 王敏, 熊娅, 杜理智, 林秀军, 梁康强. 水解反硝化工艺强化脱氮处理[J]. 化工学报, 2013, 64(6): 2194-2200.

SONG Yinghao, WANG Min, XIONG Ya, DU Lizhi, LIN Xiujun, LIANG Kangqiang. Strengthening denitrification by hydrolysis-denitrification technology[J]. CIESC Journal, 2013, 64(6): 2194-2200.

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水解反硝化工艺强化脱氮处理

Strengthening denitrification by hydrolysis-denitrification technology

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