LAMELLA PLATE CLARIFIERS & SETTLEMENT TANKS 

Wastewater treatment 

Inclined plate settlers or lamella Clarifiers are primarily used in the water and wastewater treatment industries to separate solids from liquids in effluent streams. One of the key advantage with the lamella Clarifier is that it will take up 90% less space than a standard clarifier. 
The Pollution Control range of lamella Clarifiers and settlement tanks are a robust tank construction.  
 
They are designed for easy installation as part of an Eco-SAF biological treatment system or as a stand-alone unit in various industries for the separation of solid particles from liquid using a small footprint area compared to traditional settlement tanks. 
 

 
How it Works? 

The basic principle of the lamella Clarifier is to provide the maximum efficient settling surface for particles within a small footprint. The Lamella Clarifier has a series of inclined plates and is designed to handle suspensions with low concentration slurries and solid particles that exhibit free and independent setting (Stokes Law) before they enter the next stage of a process or discharged to a receiving water course.  
 
Laminar conditions are required to obtain a sharp separation between the settling solids and the liquid so that the upward velocity of the liquid is lower that the setting velocity of the finest solid matter. Since velocity is directly related to surface area the larger the surface (settling) area the better the separation. Compared to a conventional clarifier with a setting path of about 2-3 meters a lamella clarifier has a short setting path of 10-15cm. This allows for efficient settlement in a greatly reduced footprint. 
Effluent enters the clarifier via the inlet pipe, entering the plates through the side openings. 
The liquids and solids are now separated. The liquid flows upwards, whereas the solids settle on the plates and slide down into the hopper. 
The sludge settles in the hopper prior to discharge through the sludge outlet. 
The clarified liquid leaves through the openings at the top and eventually to the outlet. 
The openings at the top will create a pressure drop across the clarifier ensuring that flow is distributed uniformly between the plates and that the full area is used. 
Units are manufactured from steel or stainless steel for free standing installations on a level base. 
Flocculants and chemical pre-treatment available to aid settlement of very fine silts, clays and colloidal particles. 
 

Advantages 

Up to 90% reduction in space requirements when compared to a normal Clarifier. 
Up to 10m2 of settling area per 1m2 of footprint area. 
Continuous operation. 
No moving parts 
Minimal operating and maintenance costs. 
Modular design for future expansions. 
Auto-Desludging available 

Applications 

Primary and final clarification of wastewater 
Pumping and Dewatering 
Groundwater treatment 
Biological purification process 
Wash water re-circulation systems 
Site run-off treatment 
In-River and Near-River works 
Plant, vehicle and wheel-wash systems 
Pulp and paper industries 
 

Delivery and Installation 

Supply and delivery is mostly available within short notice. Transport and lifting equipment can be supplied. 
At most sites the Clarifier can be installed and ready to use within one day. 
 
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