The angle at which the plates are inclined. An angle of 55° to 60° is common to ensure solids slide down the plates by gravity.
The dimensions of the individual plates.
Atotal=Aeffη⋅cos(θ)cap A sub t o t a l end-sub equals the fraction with numerator cap A sub e f f end-sub and denominator eta center dot cosine open paren theta close paren end-fraction
N=1001⋅2⋅cos(60∘)⋅0.8cap N equals the fraction with numerator 100 and denominator 1 center dot 2 center dot cosine open paren 60 raised to the composed with power close paren center dot 0.8 end-fraction
N=1001⋅2⋅0.5⋅0.8=1000.8=125 plates.cap N equals the fraction with numerator 100 and denominator 1 center dot 2 center dot 0.5 center dot 0.8 end-fraction equals 100 over 0.8 end-fraction equals 125 plates. Important Design Considerations
Atotal=N⋅W⋅Lcap A sub t o t a l end-sub equals cap N center dot cap W center dot cap L 3. Determine the Number of Plates (N)
The bottom of the clarifier must be designed to collect and remove settled solids efficiently, usually via a conical hopper or a mechanical scraper.
The required effective settling area is determined by the flow rate and the design surface overflow rate:
The angle at which the plates are inclined. An angle of 55° to 60° is common to ensure solids slide down the plates by gravity.
The dimensions of the individual plates.
Atotal=Aeffη⋅cos(θ)cap A sub t o t a l end-sub equals the fraction with numerator cap A sub e f f end-sub and denominator eta center dot cosine open paren theta close paren end-fraction Lamella Clarifier Design Calculation Pdf Downloadl
N=1001⋅2⋅cos(60∘)⋅0.8cap N equals the fraction with numerator 100 and denominator 1 center dot 2 center dot cosine open paren 60 raised to the composed with power close paren center dot 0.8 end-fraction
N=1001⋅2⋅0.5⋅0.8=1000.8=125 plates.cap N equals the fraction with numerator 100 and denominator 1 center dot 2 center dot 0.5 center dot 0.8 end-fraction equals 100 over 0.8 end-fraction equals 125 plates. Important Design Considerations The angle at which the plates are inclined
Atotal=N⋅W⋅Lcap A sub t o t a l end-sub equals cap N center dot cap W center dot cap L 3. Determine the Number of Plates (N)
The bottom of the clarifier must be designed to collect and remove settled solids efficiently, usually via a conical hopper or a mechanical scraper. Atotal=Aeffη⋅cos(θ)cap A sub t o t a l
The required effective settling area is determined by the flow rate and the design surface overflow rate: