Effect of Flow Rate Increase on the Performance of a Pilot-Scale Biological Nutrient Removal Reactor

被引：1

作者：

Nze, Kingsley ^{[1
]}

Xu, Shengnan ^{[2
,3
]}

Tang, Yao ^{[1
]}

Mohammed, Abdul ^{[4
]}

Liu, Yang ^{[2
]}

机构：

[1] Univ Alberta, Dept Civil & Environm Engn, 3-133 Markin CNRL Nat Resources Engn Facil, Edmonton, AB T6G 2W2, Canada

[2] Univ Alberta, Dept Civil & Environm Engn, 7-203 Donadeo Innovat Ctr Engn, Edmonton, AB T6G 1H9, Canada

[3] Shantou Univ, Dept Civil & Environm Engn, Shantou 515063, Guangdong, Peoples R China

[4] EPCOR Water Serv Inc, Wastewater Treatment, 10977 50 St NW, Edmonton, AB T6A 2E9, Canada

来源：

JOURNAL OF ENVIRONMENTAL ENGINEERING | 2018年 / 144卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Biological nutrient removal reactor; Flow rate; Pilot-scale; Bacterial community analysis; Nitrogen; Phosphorous; EXTRACELLULAR POLYMERIC SUBSTANCES; MUNICIPAL WASTE-WATER; HYDRAULIC RETENTION TIME; SLUDGE TREATMENT SYSTEMS; ACTIVATED-SLUDGE; NITROGEN REMOVAL; MICROBIAL COMMUNITIES; MEMBRANE BIOREACTOR; BIOFLOCCULATION; QUANTIFICATION;

D O I：

10.1061/(ASCE)EE.1943-7870.0001355

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Nutrient removal in two identical pilot-scale reactors is assessed at influent flow rates of 30, 45, and 60L/min. The bacteria community structure of nitrifiers and denitrifiers and the protein:polysaccharide ratio (PN/PS) in extracellular polymeric substances (EPS) are monitored at each flow rate. Except for the chemical oxygen demand (COD), the reactor performance in terms of ammonia and phosphorous removal begins to deteriorate at the 45L/min influent flow rate. Nitrobacter are more dominant than are nitrite-oxidizing bacteria (NOB). The PN/PS ratio in sludge EPS significantly decreases as the solids retention time (SRT) decreases from 9.3 to 2.2days. The PN/PS ratio temporarily increases in response to an increase in flow rate before normalizing to a steadier value. (C) 2018 American Society of Civil Engineers.

引用

页数：8

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