Organic matter and total nitrogen removal from wastewater using a pilot-scale membrane-aerated biofilm reactor

被引：12
|
作者：
Siriweera W.B.S. [1 ]
Yun-Je L. [2 ]
Masumi K. [3 ]
Visvanathan C. [1 ]
机构：
[1] Department of Energy, Environment and Climate Change, School of Environment, Resources and Development, Asian Institute of Technology, P. O. Box 4 Pathumthani, Khlong Luang
[2] Aqua Solutions Laboratory, Mitsubishi Chemical Corporation, 1-2, Ushikawadori 4 chome Aichi, Toyohashi
[3] Technology Section, Performance Separation Materials Unit, Aqua & Infrastructure Sector, Mitsubishi Chemical Corporation, 10th Floor, Gate City Ohsaki East Tower, 11-2, Osaki 1-chome, Shinagawa-ku, Tokyo
来源：
Bioresource Technology Reports | 2021年 / 15卷
关键词：
Denitrification efficiency; Membrane Aerated Biofilm Reactor; Pilot-scale; Polyvinyl alcohol gel; Total nitrogen removal;
D O I：
10.1016/j.biteb.2021.100817
中图分类号：
学科分类号：
摘要：
A pilot-scale membrane-aerated biofilm reactor (MABR) modified with Polyvinyl Alcohol (PVA) gel bio-carriers containing denitrifying bacteria was operated with the purpose of enhancing total nitrogen removal efficiency from actual domestic wastewater. MABR system was operated under 6, 9 and 12 h of hydraulic retention times (HRT) in different time periods. Addition of the bio-carriers increased nitrification and total nitrogen removal efficiencies by maximum of 11% and 18% at 12 h of HRT respectively. Maximum of 88% of nitrification and 79% of total nitrogen removal efficiencies were reported in the PVA gel modified MABR. Organic matter removal performance was mostly maintained above 90% with insignificant improvements. In addition to this, natural pH increase observed after PVA gel addition paves a new way for potential cost reduction in industrial scale MABR applications. Low sludge volume index around 80 mL/g indicated rapid settling characteristics of produced sludge. © 2021
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