MICRODYN CAPILLARY MODULES | USER MANUAL
MANN+HUMMEL Water & Fluid Solutions | REVISION DATE: 09/09/2021
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5.4.3
Backwashing with Special Pump & Disconnected Feed Pump
In some cases, backwashing is better than back pulsing. It is not used often – typically performed once every hour, but for a longer
period of time (between 10 – 60 seconds). Backwashing is also done with the feed pump disconnected. For this procedure, a
bigger filtrate storage vessel is needed and may require a sterile air vent filter.
5.5
ADJUSTMENT OF FILTRATE FLOW
At very high filtrate flow (high membrane permeability) there is a high potential for mechanical blocking or fouling of the
membranes. To maintain good membrane performance, it is best to limit and control the flow of filtrate by throttling the regulator
valve (VR).
Circulation Pump
Concentrate
Permeate
PI
PI
TI
PT
Feed
SEPRODYN
®
Module
FI
Compressed Air
Deaeration
Timer
VR
Figure 14
.
.
Flow diagram of PBP with the second filtrate socket.
Figure 15
. Flow diagram showing the adjustment of filtrate flow with regulator valve VR.
