The living heart of wastewater treatment — CWG engineers the full range of biological systems, from MBBR and MBR to SBR and RBC.
Biological treatment uses microorganisms to break down the organic pollutants in wastewater — the core of almost every effluent and sewage plant. CWG designs and builds the full spectrum of biological systems, choosing the right process for your load, space and reuse goals.
Biological systems cultivate bacteria that consume the organic matter (BOD/COD) in wastewater. The difference between technologies is how that biomass is grown, held and separated.
Attached-growth systems like MBBR and RBC grow biofilm on media; membrane systems like MBR filter the biomass directly; batch systems like SBR react and settle in one tank. Each suits different loads, footprints and effluent targets.
CWG matches the process — or combination of processes — to your effluent, then designs, builds and commissions the plant end to end.
Microorganisms break down organic pollutants under controlled aeration, then the biomass is separated to leave clean water.
Screening and equalisation remove solids and balance the incoming load.
Oxygen fuels bacteria that consume the organic pollutants.
Biofilm or suspended biomass builds up and continuously regenerates.
Clarification or membranes separate the biomass, leaving treated water.
MBBR, MBR, SBR or RBC — matched to your load and space.
Reliable BOD and COD reduction across effluent types.
Configurable for nitrogen and phosphorus control.
Attached-growth and membrane systems shrink the footprint.
Tolerant of load and flow variation.
Membrane options deliver water fit for recycling.
Robust attached-growth, compact, tolerant of shock loads.
Reuse-grade effluent in the smallest footprint.
Flexible batch or low-energy options for specific duties.
From municipal sewage to textile and food effluent, biological treatment is the workhorse that lets Pakistan meet NEQS limits and recycle water. CWG’s full portfolio means the plant is matched to the job — not forced to fit one technology.
Since 1998, CWG Watch Water Technology has delivered advanced water & wastewater solutions across Pakistan — wastewater plants, RO, demineralization, softening, filtration, specialty chemicals and complete plant engineering. With decades of experience, international technology partnerships and a proven portfolio, we design customised water and wastewater treatment solutions built specifically for Pakistan’s industrial requirements.
Tell us your effluent and goals, and CWG will recommend the biological system — or combination — that fits.
