ClearFox CU-M - One-Tank SBR Process Steps

ClearFox®Control Unit CU-M
12
OPTION AND
CONSEQUENCE
FILLING
Pump
Out 2
Current limits for pump
(300/1800mA) applied
Via sludge pump (Out 4)
Current limits for pump
(300/1800mA) applied
Instead of pumping only 10s + pause
(adjustable)
AERATION
Blower (+ valve)
Out 1 (+ 5)
Current limits for Blower
(250/900mA)+ valve (50/150mA)
applied
Generic pressure limits (7/350mbar)
for Blower applied
Injection aerator
Out 1
Current limits for aerator
(300/2500mA) applied
SLUDGE
Blower + valve
Out 1 + 4
Current limits for Blower
(250/900mA)+ valve (50/150mA)
applied
Generic pressure limits (7/350mbar)
for Blower applied
Via sludge pump (Out 4)
Current limits (300/1800mA) for
pump applied
CLEARWATER
Blower + valve
Out 1 + 3
Current limits for Blower
(250/900mA)+ valve (50/150mA)
applied
Generic pressure limits (7/350mbar)
for Blower applied
Pump
Out 3
Current limits (300/1800mA) for
pump applied
9.3 ONE-TANK SBR
9.3.1 Process steps
For the level measurement (overfill alarm) a manual calibration must be performed. In case this
calibration was not performed (yet), there will be no overfill alarm.
RTC sync for beginning of settling phase can be set (mostly around 3am).
Number of cycles per day can be set (1-4).
Holiday period (number of days can be entered that is counted down) can be entered, where the
controller uses different ON/OFF times for the aeration.
Cycle 1 of the day (also for bringing into operation) has a different Aeration step.
Aeration
- first cycle of the day: Infinite until RTC sync time reached
- next cycles of the day: Infinite until total Aeration Total Time (calculated out of
cycles per day and the remaining step times) reached
Aeration 1 (6min ON / 14min OFF) – via valve on Out 5 – primary aeration of the reactor
after one ON/OFF cycle jump to