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In case a chlorine cleaning routine will be started after the acid cleaning the cleaning menu must be
started again.
ATTENTION!
If chlorine cleaning is performed after acid cleaning, then the pipes must be
sufficiently rinsed (see description Step 6.)
11.6.2.2 Intensive cleaning in an separate cleaning tank
Description:
The Membrane Station is taken completely out of the bio reactor and put in a separate cleaning
container. (If the Membrane station is covered in sludge it must first be cleaned out.) The cleaning
container is filled with the cleaning fluid (40 litre for AL-CTank60L and 160 litres for AL-CTank350L in
total) up to the top of the pump unit (700mm). Please consider the cleaning fluid concentration
described below in 11.6.3!
The pump unit is connected with the control unit in the standard manner. The goal is to circulate the
cleaning solution under normal pressure and flow rate for 24 hours.
Therefore the start times T1 and T2 and filtration cycles have to be set:
Start times:
T1 / T2
= 16:00 / 04:00
Suction cycles: A1 / A2
= 30 / 30
After the cleaning process the cleaning solution is disposed of and clear water is filled into the cleaning
container to the top of the pump unit as before. After flushing with clear water for one hour the cleaning
process is finished and the used clear water is disposed of. After this step, a second cleaning with clear
water is made in the same way.
The Membrane Station is then put back into the bio reactor.
Cleaning of a single Membrane Station (one membrane):
The cleaning tank is placed near the system to connect the pumps with the existing control unit.
Be sure the room in which the cleaning takes place is well ventilated!
Note: The bottom aeration distributor should be swapped with the flat stand (part of the AL-CTank60L)
to close the tank cover during cleaning. See below.
m i n .
m a x .
Fig.: Cleaning container AL-CTank 60L for single membrane station (left: without aeration distributor)
