Your web browser is out of date.

Update your browser for better security, speed and to get the best experience on this website.

Update your browser

Biological processes − the basics

Aerobic wastewater treatment with classical activated sludge Source: Judd Water & Wastewater Consultants / YouTube

The conventional activated sludge process

The CAS process comprises a biological tank, in which aerobic treatment takes place to bio-degrade the organic carbon and amino compounds, followed by a sedimentation tank (secondary clarifier). A membrane bioreactor is an adaptation of the conventional or classical activated sludge (CAS) process.

From our sponsors…

PCI Membranes/Filtration Group, A8 series
PCI Membranes/Filtration Group, Hollow fibre series
Ecologix side banner
RisingSun Membrane
SINAP
20% off IWA Publishing
Ovivo Ceramic Membranes
Microdyn-Nadir BIO-CEL L2
Berghof Membranes v3

Related features and blogs

Figure 1:	The design elements of Tuas WRP
Feature

The MBR Site report: Singapore International Water Week, 2021

Simon Judd presents a summary of the MBR and MABR platform and poster presentations from the Singapore International Water Week (SIWW21), held online between 21 June and 2 July 2021.

Read article

From our sponsors…

Advert
Advert
Advert