ATB PUROO User manual

Innovations for clean water
PUROO®
Operation and Maintenance
Manual

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 3 from 32
Contents
Functional description PUROO®.................................................................................................... 4
Control unit ATBcontrol®1
General and safety information.................................................................................................. 6
Equipment criteria ...................................................................................................................... 6
General notes on operation ....................................................................................................... 7
Assembly control unit................................................................................................................. 7
Commissioning .......................................................................................................................... 8
Main menu ................................................................................................................................. 9
Logbook ..................................................................................................................................... 9
Settings ......................................................................................................................................10
Service Mode .............................................................................................................................10
Manual Mode .............................................................................................................................12
Info .............................................................................................................................................12
Date / time..................................................................................................................................12
Language ...................................................................................................................................12
Error reset ..................................................................................................................................12
Appendix
Connection Board ......................................................................................................................13
Potential-free contact .................................................................................................................14
Technical data............................................................................................................................14
Error messages..........................................................................................................................15
UVS®..........................................................................................................................................16
List of the pre-programmed parameters ....................................................................................17
Notes on scheduled maintenance..............................................................................................18
Operator’s self-monitoring..........................................................................................................19
Notes on disposal ......................................................................................................................20
Operations diary.........................................................................................................................22
CE documentation .....................................................................................................................26
EC Declaration of conformity .....................................................................................................30
Dear Customer,
at this point we would like to thank you for the trust which you have shown in us by the purchase of
this product.
Please take a few minutes to read through this operating instruction closely and carefully. Only in
this way is a secure and fault-free operation ensured.

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 4 from 32
Functional description Puroo®
The wastewater treatment plant functions according to the activated sludge principle in the
impounding process (SBR process). With this the pollutants are taken out of the wastewater by
floating micro-organisms (activated sludge) and converted into biomass.
The wastewater first reaches the coarse interceptor, which is connected with the biological stage
through an opening in the dividing wall. The undissolved matter settles in the coarse interceptor
before the pretreated water reaches the aeration stage through an overflow baffle. The opening in
the dividing wall causes the water level in the complete plant to be set at the same level. Thus the
complete surface area of the plant is used as buffer.
The cyclic treatment process of the plant is controlled by water level. With an average water
consumption, 1-3 cycles per day take place. A floating valve placed in the aeration stage directs
the air either to the aeration facility (membrane tube aerators are at the bottom of the tank) or to
the higher located compressed air elevator.
With low water level, the aeration stage is stirred and aerated by the input air. Following
appropriate water inflow the valve switches with a defined water level HWmax to the compressed air
elevator for the conveyance of the water. The compressed air elevator is connected to a
combination vessel (recirculation, sampling).
The switching of the valve is registered by a level switch, through which the settling phase is
initiated. The first flush with the conveyance is retained by the combination vessel and is fed into
the primary treatment as sludge return feed.
During the 60 minute settling phase further conveyance surges for sludge recirculation can take
place depending on the system.
Following the ending of the settling phase the compressed air elevator is again cleaned through
several short conveying surges using treated wastewater before the actual clean water removal is
applied. With the removal of clean water, the water level is lowered to the minimum water level

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 5 from 32
HWmin defined via the floating valve, and the float valve is switched again to aeration. This is again
registered by the level switch.
In case the minimum water level cannot be achieved within a preset time, an alarm is activated and
the program changes into emergency operation in which, within ca. 1 hour, a shortened program
sequence takes place.
The pretreated wastewater which is transferred to the biological stage during the clean water
removal is fed into the lower area of the tank in which the sedimented activated sludge is located.
There, at this point in time, treatment processes are already taking place under anoxic conditions.
Through the special arrangement of the overflow baffle a situation is achieved whereby the
wastewater flowing in has no influence on the quality of the treated water in the clean water zone.
Regulation can be adjusted to the respective requirement. With commissioning the plant is set to
the maximum number of connected persons. A change of this setting is not necessary with short-
term over- or underloading.
If no or only so little water flows in over a period of more than 48 hours following a removal of
clean water that the plant remains below the maximum water level, the plant goes into economic
mode. The aeration time is reduced such that the micro-organisms have sufficient oxygen
available to survive. With renewed rise of the water level to the maximum water level the plant to
normal operation following removal of the clean water.

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 6 from 32
atbControl®1 control unit
General and safety information
With employment in accordance with regulations there are no hazards whatsoever emanating from
the equipment. Nationally applicable specifications and technical data are to be observed!
If the control unit is used for other applications without express approval of the firm ATB WATER
GmbH and/or the following safety notices are disregarded, this can lead to malfunctions or defects
in the plant. In this case any liability is excluded. Modifications to the equipment are not permitted
and lead to loss of claims for warranty.
Do not operate any equipment which indicates a malfunction, has been dropped or has been
damaged in any way.
Equipment criteria
•Microprocessor controlled
•Voltage breakdown detection (UVS)
•Comprehensive logbook documentation
•Simple and rapid operation
•Times for all values completely pre-programmed
•Arbitrary parameter settings
•Low power consumption
•Ready for plug-in
•Potential-free contact for an additional alarm facility
•Optical and acoustic alarm signalling
Graphic display
3 short-stroke
keys for operation
Connection box
for compressor
Mains connection
Mechanical circular
connector for float
switch
IP 54 spray water
protection
Defect signal LED
(red)
Operation LED
(blinks green)

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 7 from 32
General notes on operation
The operation of the control unit takes place via three short-stroke keys. By pressing a key the
display lighting is switched on (lapses if no key is actuated within 5 minutes).
Key functions:
↑↓ Scroll up and down / menu selection
OK Switch the cursor to the figure, which is to be changed / input value is saved / select menu
point / menu setback.
With temperatures below 0°C severely limited function of the LC displays is to be reckoned with.
Assembly of the atbControl®1 control unit
The control unit is already assembled prefabricated in the control cabinet for wall-mounting or in
the open-air cabinet.
Only the power plug has to be plugged into a prepared isolated ground receptacle (wall mounting)
or the feeder connected to the designated isolated ground receptacle in the open-air cabinet.
Plug in the power plug of the compressor and of the float switch into the appropriate sockets on the
control unit.
CAUTION! Before opening the control unit this must be disconnected from the
mains supply. Work on opened equipment may be carried out exclusively by
qualified skilled electricians!
As one is concerned with electrical plant it is essential that a separate B16
fuse and a (separate) 30 mA upstream earth leakage circuit breaker (ELCB)
are provided!
Attention is to be paid to the correct laying of the protective earth conductor up to
the earthing of the building.

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 8 from 32
Commissioning
Basic settings are carried with the first commissioning. With the input of plant values all important
parameters are preset. However, we recommend to check the parameters und Settings once again
following commissioning.
Select the desired language for the menu management display using the OK
and ↑↓ keys and confirm with OK. The following languages are available:
German, English, French, Spanish, Swedish and Dutch.
Through the input of an access code it is ensured that the commissioning is
carried out by a specialist.
Enter the six-figure code number using OK and ↑↓ and confirm with OK.
Enter the date (Indicator = DD.MM.YY) and time (Indicator =
HH:MM:SS) using OK and ↑↓ and confirm with OK. Important for
the correct inputs in the logbook.
Select the PUROO® plant type using OK and ↑↓ keys.
Select the plant values using OK and ↑↓ and confirm with OK
(important for the selection of preset parameters)! The
parameters for 20 and 24 PT are to be taken from the table on
Page 16 and are to be entered manually.
Using OK and ↑↓ enter the serial number which can be found on the
PUROO®(not that of the control unit!) and confirm each number with OK.
Please note that the serial number is to be entered right-aligned.
Have you made an incorrect input? Commissioning can be repeated by
selecting NO and OK.
If the inputs are correct confirm with YES and OK.
Changeover to the info indicator follows. Displayed are the selected PT
number, the software version, time and serial number of the PUROO®.
With this the commissioning is completed and the PUROO®can start working. Should, in the
course of time, a requirement for a modification of the settings arise then specialists have the
opportunity to carry this out in the service mode.
After ca. 1 minute the info indicator changes over to the status indicator. By pressing ↑↓ you,
however, have the opportunity to change back to the info indicator or to the main level

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 9 from 32
1.1. Status indicator (actual phase)
The status indicator informs you about the current status of the wastewater
treatment plant. Indicated are the operation phase, the operational condition
of the compressor, the remaining running time of the current operation
phase, the elapsed time of the respective phase PUROO®.
The last line shows the current time and the total operating hours of the
aerator. In the case of a fault the operating hours indicator switches with the fault report.
The pictogram in the display, once again in a graphical representation, points out the operating
status (compressor ON/OFF) as well as the setting of the float switch.
1.2. Main menu
In the main menu, using OK, ↑↓ and again OK, you have the opportunity of
accessing various sub-menus, which enable you or specialists to access
further information, to amend settings or to go into manual operation.
You leave the main menu pressing ↑↓ until you reach the point 'Quit', and
OK.
2.1. Logbook (Main menu)
All relevant faults, running times, events and reports are deposited in the
logbook.
You access the individual pints using ↑↓ and OK.
2.1.1. Errors (max. 1000)
Recording of error messages which have occurred. For an explanation of
the messages shown please refer to the appendix.
2.1.2. Runtimes
You have the opportunity of displaying certain runtimes in a weekly
summary as well as over the complete operating time.
2.1.2.1. Week-by-week
Indicated are the total operation time (mains), the running time of the
compressor, the time in economic operation as well as the times of
normal operation and of the clean water removal.
Change between calendar weeks using ↑↓ and quit the weekly
summary with OK.
2.1.2.2. Accumulated
The total running times are displayed.
Return using OK.

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 10 from 32
2.1.3. Occurrances (max. 1000)
Documentation of manual interventions (e.g. modification of running
times).
Return using OK.
2.1.4. Scheduled maintenance
Indication of the scheduled maintenance carried out and entered in the
service mode.
2.2. Settings (Main menu)
Indication of the parameters set. A modification is possible in the service mode only. Change
between individual windows using ↑↓.
2.2.1. Basic settings
Indication of the aeration interval (operation/pause) in normal, number
and duration of the filling surges for the excess sludge removal,
maximum time for removal of clean water as well as the period of time
which must elapse in order to change into economic operation.
2.2.2 Advanced settings
Indication of the setting of the potential-free contact, the current limits, the
duration denitrification and settling phase.
2.2.3 Advanced settings
Following the denitrification, a phase opposite to the normal phase
increased aeration can be adjusted (in this case for a time 3 times the
length), and the reduction after a timing (in this case 60% after 6 hours).
2.3. Service mode (Main level)
The service mode is reserved exclusively for the
qualified maintenance personnel and is accessible
only after input of the 6-figure code number.
Relevant parameters of the wastewater treatment plant operation are stored and can be modified
in the service mode.
Inputs are not checked for plausibility. Our service department would be very
happy to provide you with support. ATB Umwelttechnologien GmbH reject warranty
claims of any kind for the results of incorrect inputs!
2.3.1 Settings (Service mode)
Possibility for modification of preset parameters. You change between individual setting
windows using ↑↓. You access a setting window with OK. Select the parameter using ↑↓
and OK. Setting of the individual values using ↑↓. Change of p and/or confirmation of values
using OK. Quit with ↑↓ up to point "quit".

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 11 from 32
2.3.1.1. Service info (Service Mode)
The service fitter has the possibility of noting an implemented
scheduled servicing (notice in logbook, s.p. 9), the number of
cycles in which, following an initial commissioning, no sludge
return feed is to take place (run-in phase) and De-/Activation of
high water alarm.
2.3.1.2. Basic settings (Service Mode)
Possibility for modification of aeration interval (operation/pause) in
normal operation, number and duration of flushing surges,
maximum duration of removal for clean water as well as the
period of time which must pass without removal of clean water in
order to change into economic mode.
2.3.1.3. Advanced settings (Service Mode)
De-/activation of the potential-free contact, determination of the
current limits above and below which an alarm is activated, length
of time of the denitrification and settling phases.
If the power consumption is below the minimum level the unit continues to
be controlled. If you carry out no error reset this is no longer shown for max.
72 hours with renewed occurrence of the same error.
If the power consumption is above the maximum value the unit is not again
activated until an error reset has taken place (automatic reset after 72 hours).
2.3.1.4. Advanced settings (Service Mode)
Following the denitrification, a phase opposite to the normal
phase increased aeration can be adjusted (in this case for a time
3 times the length), and the reduction after a timing (in this case
60% after 6 hours).
2.3.2.1. Type of plant (Service mode)
Choice the plant type PUROO®.
2.3.3.1. PT number (Service mode)
Possibility for amendment of the PT figure (up to 16 PT). All
parameters are adjusted automatically. As a rule, you need to carry
out no further measures in the menu point Settings.
2.3.4.1. Serial number (Service mode)
Possibility for amendment of the serial number.
(Takes place from right to left.)

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 12 from 32
2.3.6.1. Factory settings (Service mode)
The pre-programmed parameter set for the selected PT figure is
loaded. (2x OK or ↑↓ to quit).
2.4. Manual mode (Main menu)
Here you have the possibility of testing the compressor and the potential-free
contact in manual operation.
The current status of the float switch and the current power consumption are
displayed.
After 15 minutes an automatic return from manual to automatic operation.
2.5.1. Info (Main menu)
Displayed are the selected PT figure, the software version, date of the
production of the software, serial number and commissioning as well as the
current time.
2.6. Date/time (Main menu)
Possibility of adjustment of date (display = DD.MM.YY) and time (display =
HH:MM:SS)
Important for the correct entries in the logbook.
2.7.1. Language (Main menu)
Select the desired language for menu management and display using the OK
and ↑↓ keys and confirm with OK. Available are German English, French,
Spanish, Polish and Dutch.
2.8.1. Error reset (Main menu)
An error message in the display is first deleted following an error reset (i.e.
after pressing OK).
Point in time and type of error as well as the acknowledgement are
subsequently to still be found in the logbook only (errors / events).
If you carry out no error reset this is no longer shown for max. 72 hours with
renewed occurrence of the same error!
Only after an automatic reset after 72 hours (flooding 24 hours) is there an
indication, if necessary, of a continuity of the error.
With a flooding alarm there is also an automatic reset following a drop of the float
switch.

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 13 from 32
CAUTION! Before opening the control unit this must be disconnected
from the mains supply. Work on opened equipment may be carried out
exclusively by qualified skilled electricians!
APPENDIX
Connection board
Control unit fuse
TR5; T0,5
A
Microfuses for compressor TR5; T3,15A
(
S
p
are fuse at bottom of casin
g)

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 14 from 32
Potential-free contact
Please connect a separate signalling to the Cand NC contacts.
For activation of the contacts please refer to Settings/ Alarm Relay in the Service mode.
Screwless-type clamp connection:
1. Insert screwdriver in the upper slot and
2. bend it up slightly. Through this the clamp
connection is opened and it is possible to
3. insert or remove the lead
__________________________________________________________________________
Technical data:
Casing: IP54, 140x150x90 mm
Temperature range: 0°C ... +50°C
Operating voltage: 185...255V, 50...60Hz
Power consumption: < 5 VA
Maximum connected rating of the output: 720 VA
Potential-free contact: 230 V~ / 5 A / 1.250 VA | 30V- / 5 A
Accumulator: 2xNiMH, 1.2V, Type AA, 1,800 mAH; life: 1000 load/discharge cycles
with trickle charge: min. 6 years |25°
with trickle charge: min. 3 years |45°
NO: normall
y
o
p
en NC: normall
y
closed C: common
1
2
3

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 15 from 32
Error messages: If an error occurs in on-going operation this is indicated optically (display /
red LED) and acoustically (+ if required, a device on the potential-free
contact). By pressing the OK key you acknowledge the acoustic message (+
if required, a device on the potential-free contact). An error message
continues to occur alternatively with the compressor running time and is
deleted only after an error reset (i.e. after pressing OK).
If you carry out no error reset this is no longer shown for max. 72 hours with
renewed occurrence of the same error!
Only after an automatic reset after 72 hours (flooding 24 hours) is there an
indication, if necessary, of a continuity of the error.
With a flooding alarm there is also an automatic reset following a drop of the float
switch.
Please inform your maintenance firm immediately following an error message. They
will initiate all necessary measures.
Following error messages are possible:
•Current min.
Possible cause
Rectification
False limiting value set. Correct value (0.2 A).
Measurement of current incorrect. Check value of current in manual
operation, call Service.
Overload switch activated. Check membranes/voltage/back
pressure, reset switch.
The compressor is not connected to the
control system.
Connect compressor to the control
system.
A screw terminal in the control unit is not
tightened correctly so that the connection
is interrupted.
Call Service or have the contact points
and wiring checked by an electrician.
The microfuse has activated. Change the fuse (T 3,15 A).
The compressor is defective. Call Service.
•Current max.
Possible cause
Rectification
False limiting value set. Correct value (1.3 A).
Measurement of current incorrect. Check value of current in manual
operation, call Service.
Winding burnt through. Call Service.
Membrane block blocked. Call Service.
•Input 24 V
Possible cause
Rectification
Check of the switched float inputs
negative.
Call Service.

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 16 from 32
•Flooding
Possible cause
Rectification
Float switch defective Call Service
Float switch not moving freely Determine cause and ensure free
movement
Mechanical circular connector not
correctly connected.
Ensure correct connection
Backing-up Remove cause of backing-up.
High wastewater / infiltration water inflow If necessary, seal tank or rectify other
causes.
False value for period of flooding Correct value
•Float??
Possible cause
Electric float switch also with operation pause
switched
Rectification
Unusually high wastewater / infiltration
water inflow
If necessary, seal tank or rectify other
causes.
Backing-up. Remove cause of backing-up.
Float switch defective. Exchange float switch.
Compressor has no aeration
performance.
Call Service, if necessary exchange
compressor.
Hose connection leaking. Check connections, seal.
Control system without function (no display)
Possible cause
Rectification
Mains input fuse defective. Exchange fuse (T 500 mA).
UVS
Acoustic alarm, no display or stylised indication of a crossed Schuko plug socket
The integrated UVS (Under Voltage Signalling) simplifies the assurance of correct operation.
Should a power failure occur in the supply line, e.g. through the activation of the earth leakage
circuit breaker (ELCB) or a fuse, an acoustic alarm is initiated. Once activated the impulse tone,
depending on the charge condition of the accumulator, continues for up to 24 hours. You
acknowledge the alarm by pressing the OK key (signal tone) for ca. 3 secs. If the voltage is re-
established the signal deactivates automatically.

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 17 from 32
Establishment of the pre-programmed PUROO®parameters:
PE Aeration Pause Sludge return Cleanwater-
remove Start Econ. Current Min. Current Max.
norm Surges Length phase
1-15 [min] 2-15 [min] 0-9 0-5 [sec] 60-120 [min] 0-9 [d] 0,0-1,5 [A] 0,0-3,0 [A]
2 2 8 1
4 2 5 2
6 3 6 3
8 3 5 3
12 5 5 3
16 6 5
5
3
60 1 0,2 2,0
PE Length
Deni-Phase Settling phase Power Aeration Factor [%] Reduction aeration Factor [%] Energy requirement1)
0-60 [min] 60-120 [min] 0-3 [h] 100-400 4-12 [h] 40-100 [kWh/a]
2 89
4 137
6 170
8 225
12 295
16
60 60 1 300 5 60
320
1) For standard conditions. These values can vary in practice by +/- 10%.
Setting of the control system takes place according to the above details. The tables are saved in
the control unit, a manual input of the individual values is not necessary and at these points serves
only as control.

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 18 from 32
Notes on scheduled maintenance
With scheduled maintenance the tasks and inspections have to be carried out by service personnel
at large time intervals. Number of and requirements on the scheduled maintenance are specified
by the lower water authorities in which, in this connection, the biological effectiveness is at the
forefront.
The plant is equipped with a UVS. As a rule a twice-a-year scheduled maintenance is sufficient.
The examination of the treated wastewater with regard to the various parameters is also specified
by the lower water authorities. The samples to be taken for this are drawn from the upper area of
the separator using a suction pump, which is connected to the factory-installed sampling hose. In
the case that there is a distributer shaft or similar behind the plant representative samples can also
be taken from there.
A suction pump is not included within the scope of delivery of the plant, it can, however, be
obtained directly from ATB.
We recommend that, at least the following tasks are undertaken
- Inspection of the operating logbook and reading of the operating hours counter with
determination of regular operation of the plant (target-performance comparison)
- Functional check and scheduled maintenance of the compressor in accordance with the
manufacturer’s specifications
- Functional check of the overhead ventilation
- Measurement and adjustment of optimum operating values e.g. oxygen supply (~2mg/l),
Sludge volume (100-300ml/l)
- Determination of the height of the sludge level and, if necessary, arrangement of sludge
removal
- Execution of general cleaning tasks (e.g. flushing of the clean water pipe via the emergency
overflow opening, removal of foreign bodies or possible floating sludge from the separator)
- Flushing of the possibly existing irrigation via the emergency overflow opening
- Check of the structural condition of the plant (e.g. corrosion, ventilation, accessibility)
- Record in the operating logbook the scheduled maintenance carried out
Examination
of a grab sample
from the discharge
- Temperature
- pH value
- Settleable solids
- COD
Examinations in the
Aeration tank
- Oxygen concentration - Share of sludge volume
The findings and the tasks carried out must be documented in a scheduled maintenance report.
This is sent with the results of the water samples to the operator of the wastewater treatment plant
for safe-keeping. The responsible water authority can demand a view of the operating logbook and
the scheduled maintenance reports. Lower water authorities often require the sending, by the
operator or maintenance firm, of the scheduled maintenance reports following each maintenance
period.

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 19 from 32
Operator‘ self-monitoring
As operator of the wastewater treatment you have a responsibility to the water authority to ensure
a trouble-free operation of the plant. Operation faults in biological small wastewater treatment
plants, in nearly all cases, are reflected in the quality of the discharge of the treated water. These
must therefore be promptly identified and rectified either by you or by a qualified maintenance firm.
In order to document the self-monitoring you are obliged to record this in the operations diary. The
water authority can demand access to this operations diary.
In detail for this you are required to carry out the following checks regularly:
Daily:
-Function of the control unit and check for unusual indications.
Weekly:
-Visual check of the aeration for mixing and input of air bubbles.
-Visual check of water level. No sludge may overflow uncontrolled into the aeration
chamber.
Monthly:
-Visual check of the discharging water for clarity.
-Transfer of operating hours from the display into the operating diary.
-Visual check of the inlet and outlet for blockages.
-Determination of possible presence of floating sludge and, if required, removal of
the floating sludge (into the sludge storage).
If you observe the following recommendations you can save unnecessary repair costs and
increase the service life of the components of your plant:
-The plant must remain permanently switched on even if you are on holiday.
-Infiltration water such as rain water, groundwater, swimming pool and aquarium
water may not be discharged.
-With domestic cleaners please ensure that these indicate no acid or alkaline
reactions.
-The aeration openings as well as inlet and outlet openings must always be free.
The plant cover must be capable of being opened.
-Ensure that the plant is maintained regularly by a specialist firm. For the
implementation of scheduled maintenance tasks instruct firms whose staff are
certified as specialists and have been trained by ATB.
-Only the primary treatment stage has to be regularly (ca. every 12 months)
desludged by a disposal company! Desludging can take place, also as required
following consultation with the responsible water authorities and conclusion of a
maintenance contract.

Operation and Maintenance Manual PUROO®
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: XXXX XXXX / Status: 08.02.2019 / Page 20 from 32
Notes on disposal
You should, in your own interest, observe the following disposal notes:
Solid or liquid substances which
do not belong in the sink or in
the toilet
What they cause Where they are well taken care
of
Adhesive plaster Blocks pipes Dustbins, garbage cans
Ashes Do not decompose Dustbins, garbage cans
Birdcage sand Blocks wastewater treatment
plants
Dustbins, garbage cans
Cat litter Blocks pipes Dustbins, garbage cans
Chemicals Poison wastewater Collection points
Cigarette butts Lodge in wastewater treatment
plants
Dustbins, garbage cans
Cleaning agents (not general) Can poison wastewater Collection points
Condoms Blockages Dustbins, garbage cans
Corks Lodge in wastewater treatment
plants
Dustbins, garbage cans
Cottonwool sticks Block wastewater treatment plants Dustbins, garbage cans
Deep frying fats Form deposits in pipes and lead to
blockages
Dustbins, garbage cans
Disinfectants Kill bacteria Do not use
Drain cleaners Poison wastewater, corrode pipes Do not use
Edible oils Block wastewater treatment plants Dustbins, garbage cans /collection
points
Food scraps Block wastewater treatment plants Dustbins, garbage cans
Lacquer, varnish Poison wastewater Collection points
Medicines Poison wastewater Collection points, chemists
Motor oil Poisons wastewater Petrol stations, workshops
Nappies, diapers Block wastewater treatment plants Dustbins, garbage cans
Paintbrush cleaner Poisons wastewater Collection points
Paints Poison wastewater Collection points
Pesticides Poison wastewater Collection points
Photographic chemicals Poison wastewater Collection points
Plant protectants Poison wastewater Collection points
Razor blades Block wastewater treatment plants
and case injury
Dustbins, garbage cans
Sanitary towels tampons, liners Block wastewater treatment plants Dustbins, garbage cans
Textiles (e.g. nylons, cleaning
cloths, handkerchiefs etc.)
Block wastewater treatment plants Old clothes collection, dustbins,
garbage cans
Thinners (Paint) Poison wastewater Collection points
Wallpaper glues Block wastewater treatment plants Collection points
Wastes containing oil (oil filters,
clothes etc.)
Poison wastewater Collection points
WC stones Poison wastewater Do not use