Short-cut nitrification and denitrification in A2O process treating domestic wastewater - Details

Author：

Zeng, W. (Zeng, W..) (Scholars：曾薇) | Li, L. (Li, L..) | Yang, Y.-Y. (Yang, Y.-Y..) | Zhang, Y. (Zhang, Y..) (Scholars：张勇) | Wang, S.-Y. (Wang, S.-Y..) (Scholars：王淑莹)

Indexed by：

Scopus PKU CSCD

Abstract：

At　normal　temperature,　a　lab-scale　A2O　process　was　operated　for　the　treatment　of　domestic　wastewater　with　low　C/N　ratios.　Short-cut　nitrification　and　denitrification　was　achieved　by　controlling　low　DO　concentration　of　0.3~0.5　mg/L　and　higher　internal　recycle　ratios　to　decrease　the　actual　aerobic　hydraulic　retention　time　(HRT).　The　average　nitrite　accumulation　rate　reached　about　90%.　When　the　C/N　ratio　was　2.34,　about　75.4%　of　TN　could　be　removed　in　the　short-cut　nitrification　A2O　process.　The　effects　of　different　carbon　sources,　nitrification　types　and　DO　levels　on　nitrogen　removal　efficiencies　in　the　A2O　process　were　also　investigated.　The　experimental　results　showed　that　the　short-cut　nitrification　at　low　DO　concentrations　had　the　same　TN　removal　efficiency　as　the　complete　nitrification　with　the　extra　carbon　sources.　Moreover,　the　activated　sludge　settling　characteristics　did　not　deteriorate.　Even　when　the　seed　sludge　was　bulking　sludge,　sludge　settling　and　treatment　performance　was　improved　under　low　DO　conditions　(0.3~0.5　mg/L).

Keyword：

A2O process; Domestic wastewater; Short-cut nitrification and denitrification

Author Community：

[ 1 ] [Zeng, W.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Li, L.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Yang, Y.-Y.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Zhang, Y.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Wang, S.-Y.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China

Reprint Author's Address：

王淑莹
[Wang, S.-Y.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China

Email：

wsy@bjut.edu.cn

Show more details

Related Keywords：

Source ：

China Environmental Science

ISSN： 1000-6923

Year： 2010

Issue： 5

Volume： 30

Page： 625-632

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 1

Affiliated Colleges：

信息科学技术学院本学院/部未明确归属的数据

化学与生命科学学院本学院/部未明确归属的数据

Get Fulltext

Library Discovery Baidu Scholar Search SCOPUS

Type
Departments

All Years Choose Year From to