Salt inhibition on partial nitritation performance of ammonium-rich saline wastewater in the zeolite biological aerated filter

被引：32

作者：

Chen, Xiaozhen ^{[1
,2
]}

Wang, Xiaojun ^{[1
,2
,3
]}

Chen, Xiaokun ^{[1
,2
]}

Zhong, Zhong ^{[1
,2
]}

Chen, Zhenguo ^{[1
,2
,3
]}

Chen, Jing ^{[1
,2
]}

Jiang, Yuanzhen ^{[4
]}

机构：

[1] South China Univ Technol, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China

[2] Minist Educ, Key Lab Pollut Control & Ecosyst Restorat Ind Clu, Guangzhou, Guangdong, Peoples R China

[3] Hua An Biotech Co Ltd, Foshan 528300, Peoples R China

[4] Hualu Environm Technol Co Ltd, Guangzhou, Guangdong, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2019年 / 280卷

关键词：

Zeolite biological aerated filter; Salinity; Partial nitritation; Free ammonia; Ammonium oxidizing bacteria; PARTIAL NITRIFICATION; LANDFILL LEACHATE; NITROGEN REMOVAL; BACTERIAL COMMUNITY; BIOFILM; DENITRIFICATION; SYSTEMS; TEMPERATURE; ANAMMOX;

D O I：

10.1016/j.biortech.2019.02.048

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Influences of various concentrations of salinity (NaCl 0-25.0 g/L) on partial nitritation performance in a zeolite biological aerated filter (ZBAF) were investigated. The highest nitrite production rate (NPR) of 1.357 kg/(m(3).d) and nitrite accumulation rate (NAR) of 99.0% was achieved with salt free wastewater. While after adding extra salt, NPR and ammonium removal efficiency (ARE) presented an obvious decline trend. The lowest NPR (0.599 kg/(m(3).d)) and ARE (34.2%) were obtained with salinity of 25.0 g/L NaCl. It has been confirmed that addition of salt resulted in the increase of free ammonia (FA), and then further inhibited ammonium oxidizing bacteria (AOB). High-throughput sequencing analysis results further revealed that the relative abundance of AOB decreased in ZBAF. All results demonstrated that AOB was inhibited not only by high osmotic pressure caused by salt, but also by high FA.

引用

页码：287 / 294

页数：8

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