DE Filtration Flashcards
1
Q
What are the types of DE filters?
A
Plate and frame
Horizontal Leaf
Vertical leaf
Candle or tube
2
Q
What are the basics steps to operating a DE filter?
A
Pre-coating
Body feeding
Clean out and sanitizing
Reduction of oxygen (throughout filtration)
3
Q
What is pre coating?
A
Adding a protective layer 3.2-6mm (1/8 to 1/4”) of DE onto filter mesh screen
4
Q
What is body feed?
A
DE added into beer stream as it goes through filter mesh screen
5
Q
What are some reasons you have poor clarity during filtration?
A
Improper prebody formation
DE bodyfeed grade too coarse
Gas bubbles in feed liquid
Loss of flow
Damaged filter screen
6
Q
What are some reasons you have shorter filter cycles?
A
DE bodyfeed too fine
Blinded filter screen
Turbidity surge in feed liquid
Filtration flow rate too high
