KLARO GmbH
12
Original Operating Manual for KLARO Small Wastewater Treatment Plant V.15.07
-
Step 2 (valve 2): Aeration
In this step, the wastewater is aerated and mixed. Aeration is supplied via membrane tubes or
plates mounted on the chamber floor. The aerator of the plant is supplied with ambient air by an
externally
installed control
cabinet. The
required
compressed air is
created by an air
compressor.
Aeration is usually
operated
intermittently.
The aeration has
two effects
simultaneously:
•
The microorganisms of the activated sludge are supplied with oxygen, which is necessary for
their metabolic activity and therefore for the reduction of pollutants,
•
it creates close contact between wastewater and bacteria.
-
Step 3: Settling Phase
This step is a resting phase, in which no aeration takes place. The activated sludge can settle
according to the principle of gravity (sedimentation phase). At the top, a clear water zone forms,
and at the bottom a sludge layer is formed. Any scum will be located above the clear water zone.
-
Step 4 (valve 3): Clear Water Extractor
In this phase, the biologically treated wastewater (clear water) is sucked from the SBR stage.
This pumping action is performed by compressed air by the airlift principle (airlift). The airlift is
designed so that any scum occurring on the clear water layer is not pumped out. A minimum
water level in the SBR stage is maintained without further components.
-
Step 5 (valve 4): Excess Sludge Withdrawal
In this step, the excess activated sludge is returned from the SBR reactor chamber into the
sludge storage chamber by the airlift, where it is stored. This excess sludge is drawn off near the
bottom of the SBR chamber.
Upon completion of this 5th step, the treatment process starts over with step 1.
4 of the cycles described above are normally performed daily. Individual adjustment of the switching
times and the number of cycles is possible in consultation with KLARO GmbH. This adjustment must be
performed by an authorized service contractor.
It is also possible to manually switch the system to holiday mode. The holiday mode is a greatly reduced
operating mode of the plant during longer periods without wastewater inflow.
Figure 1: Membrane Tube Diffusor
Figure 2: Membrane Plate Diffusor
KLARO GmbH
2
Original Operating Manual for KLARO Small Wastewater Treatment Plant V.15.07
IMPORTANT:
•
This Operating Manual contains information about the plant, from installation
to maintenance, and must therefore be read before commissioning of the
plant!
•
All safety instructions must be observed!
•
The Operating Manual must be kept readily available during the operation of
the plant!
Plant Specifications
For any questions in the course of the operation of the plant, the specifications of your plant should
be noted as follows. With the help of this information, our staff will be able to help you more quickly
in the event of a malfunction. The specifications can be found on the nameplate, which is located
on the outside of the cabinet door for indoor cabinets, and inside the cabinet for outdoor cabinets.
Small Wastewater Treatment
Plant
PT
Sludge storage
Buffer
SB-Reactor
Approval No.:
Process class:
Certified:
Cabinet:
Controller:
Compressor:
Denomination:
Serial No.:
Article No.:
Additional module:
Article No.:
El. Connected load:
KLARO GmbH
2
Original Operating Manual for KLARO Small Wastewater Treatment Plant V.15.07
IMPORTANT:
•
This Operating Manual contains information about the plant, from installation
to maintenance, and must therefore be read before commissioning of the
plant!
•
All safety instructions must be observed!
•
The Operating Manual must be kept readily available during the operation of
the plant!
Plant Specifications
For any questions in the course of the operation of the plant, the specifications of your plant should
be noted as follows. With the help of this information, our staff will be able to help you more quickly
in the event of a malfunction. The specifications can be found on the nameplate, which is located
on the outside of the cabinet door for indoor cabinets, and inside the cabinet for outdoor cabinets.
Small Wastewater Treatment
Plant
PT
Sludge storage
Buffer
SB-Reactor
Approval No.:
Process class:
Certified:
Cabinet:
Controller:
Compressor:
Denomination:
Serial No.:
Article No.:
Additional module:
Article No.:
El. Connected load:
12
