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Clarifiers, the inclined parallel plate design, manufactured by Met-Chemo. are used as part of a waste water treatment system for solids settling, are constructed of carbon steel with coal tar epoxy lining on the inside, and epoxy coating on the exterior. The internal plate pack is set at 60% for optimum settling and is constructed of a epoxy-coated steel shell with plastic plates.
Met-Chem.’s clarifiers offer these special benefits
Unit is Completely Assembled
Low Installation
Conservative Design 0.2 GPM/Ft2
Completely Automatic, Gravity in Gravity Out
Reduced Floor Space
Large Compartment Flocculation Tanks with Mixer for Extra Retention Time
Principle of operation
Influent enters the Lamella® Gravity Settler and flows downward through the inlet chamber in the center of the unit and enters the plates through side-entry plate slots. The countercurrent design, unlike typical bottom feed designs, reduces the risk of disturbing previously settled solids. As the liquid flows upward, the solids settle on the inclined, parallel plates and slide into the sludge hopper at the bottom. Further thickening of the sludge is achieved in the hopper due to compression in the quiescent zone achieved by the side feed design.
The clarified liquid leaves the plate assembly through orifices or weirs at the top and is distributed into collection channels leading to the clarified water outlet. This creates a pressure drop across the collection channels which ensure uniform flow distribution across the plates in order to utilize the full area for settling.