Function Of The Sbr Plant - Graf oneAdvanced Operation Manual

3.2.4

Function of the SBR plant

oneAdvanced is a fully biological wastewater treatment system, which functions on the princi-
ple of the SBR process (aeration system in retention process).
This fully biological treatment takes place with aerated sludge. Aerated sludge basically consists
of microorganisms that break down the pollutants dissolved in wastewaster
Plants larger than 10 PE feature upstream sludge reservoirs with integrated buffer that perform
the following functions:
storage of primary and secondary sludge,
retention of deposited materials and floating solids,
storage of supply water,
compensation of fluctuations in the wastewater supply related to volume and concentration.
The SBR reactor provides the following functions:
biological cleaning with aerated slurry
nitrification and denitrification
phosphate precipitation
The wastewater treatment plant is operated using a microprocessor control, which controls the
air compressor and air distribution for the various lifters via magnetic valves / stepped motors.
3.2.4.1 Process flow of oneAdvanced larger than 3–9 PE
The SBR procedure is a series of three steps, undertaken one after another and twice a day.
Step 1: Aeration
In the first phase, the wastewater is put straight through aerobic treatment
for a fixed time. As a result, firstly the microorganisms (aerated sludge) are
supplied with the oxygen needed for the breakdown and secondly pressure
aeration causes mixing. The system's aeration equipment is supplied with
ambient air by a compressor. Aeration is intermittent so that targeted
wastewater cleaning is possible. Different ambient conditions can thereby
be achieved.
3. General
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