GORMAN-RUPP VG3B3-B, Installation, Operation And Maintenance Manual

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Aqua UltraFiltration™ Membrane System Control Strategy
ID #107150D Page 15 of 37 Revision: 1
Augusta Correctional Center WWTP
© 2013 Aqua-Aerobic Systems, Inc.
Mode Steps
Filtration Sequence Filtration Bottom (FB)
Forward Flush Bottom (FFB)
Backwash Bottom (BWB)
Filtration Top (FT)
Forward Flush Top (FFT)
Backwash Top (BWT)
Tag No. Description FB FFB BWB FT FFT BWT
EV4X12 Feed Bottom Valve Open Open
EV4X11 Feed Top Valve Open Open
EV4X22 Feed Vent Valve Open

Open

Open

Open

Open

Open

EV4X21 Permeate Vent Valve
Open

Open

Open

Open

EV4X13 Backwash Top Valve Open Open
EV4X14 Backwash Bottom Valve Open Open
EV4X02 Permeate Valve Open Open
EV4X03 Backwash Inlet Valve Open Open
P4X01 Feed Pump Run Run Run Run
P600X Backwash Pumps (any two) Run Run
P5101 Acid Pump
P1301 Alum Pump Run Run Run Run
P5301 Chlorine Pump
P5302 Base Pump
Fig. 3- Filtration Sequence Valve and Pump Chart

Valve is only open for the first few minutes of a step.
6.4.4 DETAILED PROCEDURE
The following steps are based upon an unknown status of certain pumps and valves and assume
an action must be taken. If the pump/valve has the proper status at the onset of the step, no
action may be necessary (i.e., a pump that is already running need not ‘start, or a valve that is
already closed doesn’t need to be ‘closed’). For the detailed sequence shown:

A critical alarm will cause the membrane system to go to the Alarm Shutdown mode (see
section 8.0).

The sequence shown assumes the forward flush steps are being used, and occur before
the backwash. The sequence uses the timer and flow tags numbers for Filtration
Sequence Program 1.

Valve feedback is based on position limit switches and the stroke time setpoints. When
first starting a pump, the valves must be confirmed opened before the pump will start.