44
Menu11: Step 4
Chem. liquid filled?
NEXT: menu exit
ENTER: Start cleaning
Chemical cleaning routine for the AQUALOOP System:
A cleaning option is available in the control menu of the AQUALOOP Membrane controller. A semi-
automatic cleaning of membrane cartridges can be performed without the need to dismount the
membranes.
Menu start of cleaning routine
Selection of menu 11
1.)
Security questions for starting the cleaning routine
2.)
Controller automatically starts the sludge pump until the
minimum level of water is reached in the bioreactor (BRmin).
Note: If no internal sludge pump is connected, then the
bioreactor should be pumped out with an external pump until
"BRmin -" appears in the display (with a simultaneous sound of 5
beep tones)
Attention: The suction pump must not be allowed to run dry!
3.)
If the controller shows "BRmin -", then a back flush process is
automatically performed to empty the backflush tank. This
procedure ends automatically or can also be terminated
manually.
4.)
Now the cleaning solution (see. Chap. 11.6.3) can be added via
the connection device. In small tank systems with good
accessibility (for instance, AL-System 6) the cleaning liquid can be
filled directly into the back flushing tank.
Note:
The cleaning solution must be refilled during the cleaning process
in the case where more than three membranes are installed as the
back flushing tank has only approx. 6 l holding capacity and each
membrane requires 2l of cleaning solution.
5.)
When the cleaning solution is filled, then the cleaning cycle starts
with ENTER. A pre-set cleaning routine now runs. The routine
takes about one hour.
6.)
After the completion of the cleaning routine a clear water flush
must be started. At least two litres of clear water must be filled
into the back flushing tank for each membrane.
7.)
With ENTER the clear water flushing is confirmed. The routine
takes about max. 4 minutes. Water which comes out of the pipe
must be sent to waste.
After the completion of the clear water flushing, the operation
mode appears in the display and the normal program continues
to operate further, corresponding to the set parameters.
Menu11:
Chemical cleaning
Next: next menu
ENTER: start clean
Menu11: Step 1
Chem. cleaning start?
NEXT: exit menu
ENTER: confirm
Menu11: Step 2
Slugepump working
Status: BRmin +
ENTER: exit menu
Menu11: Step 5
Cleaning working
Time: 60: 00min
ENTER: exit cleaning
22:08h / A= 4 / 9
T1=05:00h/ T2=16:00h
Air ON/OFF
BRmin + / CLmax -
Menu11: Step 6
Clearwater filled in?
NEXT: exit flushing
ENTER: start flushing
Menu11: Step 7
Clearwater flushing
Time: 04: 00min
ENTER: exit flushing
Menu11: Step 3
Status: BRmin -
Backflush pump
NEXT: abort backflush
