Effect of organic matter to nitrogen ratio on membrane bioreactor performance

被引：17

作者：

Hao, L. ^{[1
]}

Liao, B. Q. ^{[1
]}

机构：

[1] Lakehead Univ, Dept Chem Engn, Thunder Bay, ON P7B 5E1, Canada

来源：

ENVIRONMENTAL TECHNOLOGY | 2015年 / 36卷 / 20期

基金：

加拿大自然科学与工程研究理事会;

关键词：

nutrient requirements; industrial waste water treatment; COD removal; sludge yield; membrane fouling; WASTE-WATER TREATMENT; ACTIVATED-SLUDGE; COD/N RATIO; NUTRIENT REMOVAL; FILTERABILITY; DENITRIFICATION; REACTOR;

D O I：

10.1080/09593330.2015.1043353

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Effect of chemical oxygen demand (COD) to nitrogen (COD:N) ratio in feed on the performance of aerobic membrane bioreactor (MBR) for treating a synthetic high-strength industrial waste water containing glucose was studied for over 370 days. The widely recommended nutrients ratio (COD:N:P=100:5:1) is not necessary for aerobic biological industrial waste water treatment. An increased COD:N ratio from 100:5 to 100:2.5 and 100:1.8 had a limited impact on COD removal efficiency and further led to a significant improvement in membrane performance, a reduced sludge yield, and improved effluent quality in terms of residual nutrients. An increased COD:N ratio will benefit the industrial waste water treatment using MBRs by reducing membrane fouling and sludge yield, saving chemical costs, and reducing secondary pollution by nutrients addition. Optimization of nutrients usage should be conducted for specific industrial waste water streams.

引用

页码：2674 / 2680

页数：7

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