A comparison of aerobic granular sludge with conventional and compact biological treatment technologies
Artikel i vetenskaplig tidskrift, 2019

The aerobic granular sludge (AGS) technology is growing towards becoming a mature option for new municipal wastewater treatment plants and capacity extensions. A process based on AGS was compared to conventional activated sludge processes (with and without enhanced biological phosphorus removal), an integrated fixed-film activated sludge (IFAS) process and a membrane bioreactor (MBR) by estimating the land area demand (footprint), electricity demand and chemicals’ consumption. The process alternatives compared included pre-settling, sludge digestion and necessary post-treatment to achieve effluent concentrations of 8 mg/L nitrogen and 0.2 mg/L phosphorus at 7°C. The alternative based on AGS was estimated to have a 40–50% smaller footprint and 23% less electricity requirement than conventional activated sludge. In relation to the other compact treatment options IFAS and MBR, the AGS process had an estimated electricity usage that was 35–70% lower. This suggests a favourable potential for processes based on AGS although more available experience of AGS operation and performance at full scale is desired.

electricity demand

footprint

Aerobic granular sludge

membrane bioreactor

chemicals’ consumption

integrated fixed-film activated sludge

Författare

Simon Bengtsson

Chalmers, Arkitektur och samhällsbyggnadsteknik, Vatten Miljö Teknik

Promiko AB

Mark de Blois

H2OLAND AB

Britt-Marie Wilen

Chalmers, Arkitektur och samhällsbyggnadsteknik, Vatten Miljö Teknik

David Gustavsson

VA SYD

Sweden Water Research

Environmental Technology (United Kingdom)

0959-3330 (ISSN) 1479-487X (eISSN)

Vol. 40 21 2769-2778

Ämneskategorier

Vattenteknik

Annan naturresursteknik

Vattenbehandling

DOI

10.1080/09593330.2018.1452985

PubMed

29533707

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Senast uppdaterat

2023-05-26