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…

RisingSun Membrane
Ecologix side banner
Ovivo Ceramic Membranes
Kubota SP-A
Berghof Membranes v3
Oxymo Technology MABR

Related features and blogs

Feat 5 new technologies Header

Chasing alternative solutions in wastewater treatment

Five examples of novel or innovative municipal wastewater and sludge treatment technologies aimed at meeting the global sustainability challenge, including anaerobic treatment, hydrothermal carbonisation, phosphate recovery, annamox and photobioreactors.

Read article

From our sponsors…