The greenFLOW sewage treatment plant
Proces oczyszczania ścieków w oczyszczalniach biologicznych z serii greenFLOW składa się z trzech etapów.
The sewage treatment process in biological treatment plants of the greenFLOW series consists of three stages.
The first stage involves sewage treatment in a septic tank. At this stage, water insoluble substances are removed from the sewage. This stage is often called the sewage pre-treatment. Sedimentation, (falling of particles) and flotation, (the outflow of particles to the surface of sewage), as well as fermentation of the accumulated sludge take place in the septic tank and is a part of pretreatment process.
The second stage of sewage treatment involves sewage treatment in a biological reactor, where organic pollutants are removed from the sewage using oxygen processes. The main element located in the reactor are properly designed parts, which, thanks to their construction, allow the development of the biological membrane on them, also known as the biofilm. Microorganisms located in the biological membrane, with the participation of oxygen, decompose organic substances contained in sewage.
The third and final stage of sewage treatment is separation from the treated excess sludge in the sedimentation process. This process takes place in the secondary tank.
Sewage treated in a biological treatment plant can be discharged:
- into the ground through absorbent wells, draining tunnels or drainage,
- to flowing waters.
The treatment plant consists of:
Septic tank with a partition,
Biological reactor, inside of which there are:
– bubble diffuser for the aeration of sewage,
– mammoth pump for excess sludge recirculation,
- movable submerged biological bed,
Control box with controler and membrane blower.
