In washing type plate and frame filter press, the ratio of washing rate to the final filtrate rate is__________________?

Related Mcqs:

1. Introduction of slurry in a plate and frame filter press is done through a plate in each frame. The plate of this filter has a _______________ surface?

   A. Plane B. Curved C. Ribbed D. Either A. or B....

2. The basic filtration equation is given as dt/dV = (μ/A ΔP). [(α .CV/A) + Rm], where, V is volume of the filtrate; A is the filtration area, a is specific cake resistance, μ is viscosity of the filtrate, and C is the concentration of the solids in the feed slurry. In a 20 minutes constant rate filtration, 5 m3 of filtrate was obtained. If this is followed by a constant pressure filtration, how much more time in minutes, it will take for another 5 m3 of filtrate to be produced? Neglect filter medium resistance, Rm; assume incompressible cake ?

   A. 10 B. 20 C. 25 D. 30...

3. Filtrate flow rate in case of a rotary drum vacuum filter (in which Rm < < Rc) is proportional to ____________ and the cycle time (where, μ = filtrate viscosity Rm = filter medium resistance Rc = cake resistance)?

   A. √μ B. 1/√μ C. 1/μ D. 1/μ2...

4. Flow of filtrate through the cake in a plate and frame filter press is best described by the ______________ equation?

   A. Kozeny-Carman B. Hagen-Poiseuille’s C. Fanning’s D. Kremser...

5. In case of a plate and frame filter press, filtrate flow through the cake follows _______________ flow?

   A. Plug B. Turbulent C. Laminar D. None of these...

6. During washing of filter at the end of constant pressure filtration, the rate of washing equals the rate of filtration___________________?

   A. At time zero B. At the end of filtration C. When half the filtrate has been obtained D. At the end of filtration, but decreases with time subsequently...

7. Shell and leaf filter as compared to plate and frame filter _____________________?

   A. Entails less labor cost B. Facilitates filtration under higher pressure C. Provides more effective washing D. All A., B. & C....

8. Filter aids like asbestos, kieselguhr, diatomaceous earth etc. are used to increase the porosity of the final filter cake & reducing the cake resistance during filtration. Filter aid is_______________?

   A. Added to the feed slurry B. Pre-coated on the filter medium prior to filtration C. Separated from the cake by dissolving solids or by burning it off D. All A, B. & C....

9. A straight line is obtained on plotting reciprocal of filtration rate vs. the volume of filtrate for _______________ flow of filtrate?

   A. Compressible cakes and laminar B. Incompressible cake and laminar C. Compressible cake and turbulent D. Incompressible cake and turbulent...

10. Supporting legs of a plate and frame filter is normally made of________________?

    A. Stainless steel B. Cast iron C. High speed steel D. Wooden plank...