Aquabio Ltd - AquaBiosep™Lamella

Separation of suspended solids and water

Many wastewater streams contain suspended solids that cannot be disposed of or that cause problems in downstream wastewater treatment systems. To separate these solids from the wastewater, Aquabio can offer the AquaBiosep™ lamella. The settling system combines compactness with troublefree operation and minimum maintenance. It can remove all settleable suspended solids, in a simple and effective way.

Characteristics

Compact installation
Small footprint
High efficiency
Process integrated mixing and flocculation (if necessary)
Standardized components for all necessary capacities.

Applications

The AquaBiosep™ lamella can be used in many industrial and municipal wastewater treatment plants Municipal Water companies use the Lamella for washwater treatment produced from the drinking water production process.

Some examples are:

Pre-settlement in biological wastewater treatment systems
Post settlement of activated sludge
Settlement in physical/chemical plants
Washwater treatment

Please see our downloads section to see some case studies.

AquaBiosep™ lamella - Principle of operation

A typical Lamella installation

Principle of Operation

Water

The water containing suspended solids is fed (1) into the inlet compartment (2) of the AquaBiosep™ lamella. It flows downwards into the tank and enters the plate pack at both sides through the inlet slots (3). The plate pack (4) consists of a number of flat plates, which are positioned at an angle. The total settling area and the plate distance are determined by the sludge settling characteristics. During the upward (laminar) transport of water (6), the sludge settles on the plates (5) and the clean water leaves the AquaBiosep™ lamella through the outlet duct (7) and outlet nozzle (8). The special design of this duct promotes high settling efficiencies.

Sludge

The sludge on the plates flows downwards (5) as countercurrent to the water flow (6). The water inlet at the sides of the plate pack promotes unhindered sludge flow, preventing the accumulation of sludge and possible plugging between the plates. The sludge is collected in the sludge hopper (9), where further thickening takes place. The configuration of the sludge hopper enables a homogenous sludge discharge (10).

Design Considerations

The selection of the correct AquaBiosep™ lamella is determined by the feed water characteristics.

Experience, (standard) settling tests and/or pilot scale tests with one of our test units enables us to provide process guarantees on most applications.

AquaBiosep™ lamellas are used for treating a wide range of flowrates. They are available as free standing units or as plate packs in (concrete) tanks.

Optionally AquaBiosep™ lamellas can be equipped with integrated mixing/flocculation chambers, an additional sludge thickener, mechanical sludge removers and/or automatic sludge discharge systems.