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The mode of operation in which permeate water is pumped into the membrane fibers, forcing flow in a reverse direction to remove any accumulation of solids from the membrane fiber surface.
Backpulse
Water that passes through the membrane pores from the feed side to the lumen side. Considered synonymous with filtrate or membrane-filtered water.
Membrane Permeate
How much air in cubic feet per minute does one membrane train get?
1750 CFM
What is the volume of 1 membrane basin at typical operating level?
20,000 gallons
100 hp
Excessive buildup of material on the membrane surface, or within its pores, that is not readily removed by routine membrane-cleaning processes.
Fouling
Fouling reduces the active surface of membrane area and permeability.
Pressure differential across the membrane surface. Values are affected by temperature, and flux through the membranes.
Trans Membrane Pressure (TMP)
What horsepower are the membrane tank drain pumps?
25 hp
How long is one membrane basin?
33 Feet
Are the membrane blowers on a variable frequency drive?
No
The hollow interior, small central space in a membrane fiber, through which filtered water flows.
Lumen
How many modules are in 1 membrane cassette?
48
How many gallons of chlorine does the clean program use in a clean?
20 gallons
How wide is one membrane basin?
9 feet
What is the CFM output of one membrane air compressor?
37.2 CFM@ 175 psi
A group of membrane fibers assembled as a unit for insertion in a membrane cassette
Membrane Module
What is the surface area of membranes per train?
48,970 square feet
How many gallons of citric acid does the clean program use in a clean?
70 gallons
How deep is one membrane basin?
12 feet- 9 feet operating depth
What is the capacity of the membrane crane?
5 ton
Assembly of membrane modules in a frame, with permeate and air connections, which can be isolated and removed from a membrane train.
Membrane Cassette
What is the total surface area of all membrane trains?
195,840 square feet
What is the current soak time for a membrane clean?
2 Hours
What is the capacity of one membrane train?
0.38 mgd
What is the hold time for a TSS Sample
7 Days