BIOCOMPACT-MULTI is a cyclic activated sludge system for the treatment of industrial and mu-nicipal wastewater.

BIOCOMPACT-MULTI is a three-compartment activated sludge reactor with an optimal and cost-effective combination of the two basic process, aeration and sludge settling. .

BIOCOMPACT-MULTI is combining the advantages of conventional activated sludge process and sequencing batch reactor technology. Like the conventional system, its reactor volume is fixed and the tank level is always constant. Influent flow is continuous and so is the effluent discharge.

BIOCOMPACT-MULTI with biological nutrient removal can meet very stringent effluent require-ments for BOD, nitrogen and phosphorus. .

BIOCOMPACT-MULTI consists of three reactors, each reactor is equipped with an aeration sys-tem (either surface or fine bubble aeration), whilst the outer reactors are also provided with overflow weirs for effluent discharge. This means that each of the outer reactors can serve as an aeration and sedimentation tank. Wastewater can be fed into each reactor. Three reactors are hydraulically linked by an opening in the common connecting walls Excess sludge which can be removed from an outlet in each outer reactor. .

BIOCOMPACT-MULTI can be used for the introduction of enhanced biological nutrient removal. Complex and more concentrated wastewaters or stringent effluent quality requires often treatment in different steps. The multi-stage BIOCOMPACT configurations offer in this respect the perfect solution. .