BIOLOGICAL COMBINED SYSTEM (BIOCOS)

Hybrid Activated Sludge process which shares the features of both continuous flow and sequencing batch reactor systems. The benefit of cycles allows for more operational flexibility under varying loads and flow situations. BIOCOS is an Alternating Activated Sludge constant level Sequential Batch Reactor System without a Decanter.

Features

A cyclic process operated at constant water levels
A Hybrid technology combining the benefits of SBR and continuous flow system
Features Alternating Sedimentation and Sludge Recycle
High Solids Concentration in AIR – Reactor = High Biological process rates
Relatively low solids concentration in ALT – Reactor = Improved Settling
Principle Denitrification occurs in the AIR reactor during aeration breaks
Substantial endogenous denitrification in the sludge blanket of the ALR – Reactor

Optimized biological phosphorous activity with densified biomass.
Small footprint
Denitrification Capability up to 50% of the nitrogen removal typically occurs in the sludge blanket of the ALT tanks. This denitrification approach is highly suited for low biochemical oxygen demand (BOD) and total nitrogen (TN) ratios in the feed through endogenous decay.
Low fine particles
Simple O&M
Less energy demand