Operating instructions AQUAMAX
®
PRO G
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: 9060 0272 / Status: 24 February 2021 / Page 30 from 36
Notes on maintenance
With the maintenance tasks and examinations have to be carried out at greater time intervals by
the service personnel. The number of and requirements on the maintenance are laid down by the
lower water authorities, whereby, with this, the biological effectiveness is at the fore. The plant is
equipped with a UVS
®
. As a rule, a twice/year maintenance is sufficient. The examination of the
treated wastewater with regard to the various parameters is also laid down by the lower water
authority.
We recommend that at least the following tasks are carried out:
Inspection of the operator’s logbook or the electrical logbook and reading of the operating
hours count with establishment of regular operation (set-actual comparison).
Removal of the
AQUAMAX
®
and removal of possibly existing tangles and sludge deposits or
similar in the units.
Functional check of the operationally important mechanical, electrical engineering and other
plant components such as aerators, pump(s), float switches and control systems.
Functional check of the roof ventilation.
Setting of optimum operating values, e.g. oxygen supply (~ 2 mg/l), sludge volume (300-500
ml/l).
Determination of the height of the sludge level in the sludge storage and, if required,
arrangement of sludge removal (with a maximum filling level of 70% of the useful volume).
Implementation of general cleaning tasks such as, for example, removal of deposits, removal
of foreign bodies.
Examination of the structural condition of the plant e.g. corrosion, accessibility, ventilation,
screw-type connections, hoses.
As far as present, check UV lamp for dirt and, if necessary, clean.
Arrange for the carrying out of the maintenance tasks by firms whose staff hold a certificate of
technical qualification and have been trained by ATB.
The maintenance carried out is to be recorded in the operator’s logbook.
As a minimum, the following wastewater examinations should be carried out within the
scope of maintenance:
Examination of a grab sample from the
discharge (sampling vessel
Inspections in the aeration tank
COD
pH
Settleable solids
Oxygen concentration
Sludge volume
Temperature
If the sample is taken from the sampling bottle this should have stood at rest for at least 15 minutes
beforehand. Under no circumstances shaken! Through this a possible growth on the side of the
bottle could become loosened and falsify the analysis result.
At the end of maintenance, the sampling bottle is to be cleaned or exchanged for a clean one.
The findings and tasks carried out must be documented in a maintenance report. This is handed or
sent to the operator of the wastewater treatment plant with the results of the water sample. The
responsible water authority can demand an inspection of the operator’s logbook and the
maintenance report. Frequently, the lower water authority demands the transmission of the
maintenance report by the operator or the maintenance firm.
after each maintenance.