Waterleau Conventional Activated Sludge wastewater treatment
Biological Wastewater Treatment: Conventional Activated Sludge (CAS)
Waterleau has successfully implemented biological processes using oxygen to break down organic contaminants and nutrients such as nitrogen and phosphorus across the globe. Over the years, Waterleau has designed and built numerous Conventional Activated Sludge (CAS) systems for both municipal and industrial wastewater treatment on every continent.
Building on this extensive experience, Waterleau developed its own smarter and more efficient cyclic activated sludge technology. LUCAS® optimizes time-managed feeding and aeration to significantly improve sludge settleability allowing the elimination of separate secondary clarification, resulting in a substantially smaller plant footprint, lower civil construction costs and reduced operational expenditure.
Waterleau CAS Carousel
The Waterleau Carousel wastewater treatment technology is our Conventional Activated Sludge (CAS) and proven-concept aerobic wastewater treatment system.
Whereas in the LUCAS® Cyclic Activated Sludge systems, the
3 processes of biological treatment alternate in each of 3
hydraulically interconnected compartments, in the Carousel system, the activated sludge reactor tank combines accumulation and regeneration, while settling takes place in a dedicated and separated clarifier or sedimentation tank.
The bioreactor design allows nitrification-denitrification and removal of phosphorus in one single reactor. After treatment, the purified water is separated from the activated sludge in a clarification step.
Waterleau CAS Extended Aeration
The Waterleau Extended Aeration is our biological treatment design in
case no activated sludge from secondary treatment is fed to the sludge
from primary treatment.
With a higher concentration of inert solids, longer mixing time is
required for the removal of bio-degradable organic waste. Mixing must be
provided by aeration or mechanical means in order to sustain the
biological process.
With the longer detention time, high removal efficiency can be achieved.
Find your local contact
Our expertise is always within reach. Digital communication has cut long distances short, but we advocate the traditional way of sharing insights.
Contact us today. We are looking forward to help you reach your sustainable development goals.
