The Bergmann Group is a midsize company family-run in the 3rd generation with a 75-year tradition. The Bergmann group comprises of: Bergmann Concrete, Bergmann Waste Water Engineering, Bergmann Environmental Engineering, Bergmann Sand & Recycling as well as Bergmann Real Estate.
WSB® stands for "Wirbel-Schwebebett-Biofilmverfahren" (= fluidized bed biofilm process). It is a pure biofilm process without sludge recirculation in the biological cleaning step.
The proved and approved process is now used in over 20.000 plants across Europe. The cleaning performance is based on the high-tech of a creek. Thus the users profit from a carefree, reliable and efficient purification solution. Low capital, maintenance and running costs. At WSB® you don't find any sensitive technology within the plant. Additionally, causative organisms are largely eliminated by the microbiology.
Of course! All plants have the approval of the building authorities through the German Institute for Construction Engineering (DIBt). The corresponding registration numbers are:
Z.55 -6-64 | Z.55-6-65 | Z.55-6-66. These get constantly renewed.
The size of the tanks is primarily determined by the design ratings of the preclarification. According to a sludge study, which Bergmann Environmental Engineering has carried out together with the Technical University of Dresden, DIBt could be persuaded of the fact that the sludge generation in the WSB® process is far lower than in any of the other processes. This resulted in a modification of the registration that allows us have a small preclarification and thus less tanks.
The corresponding information can be obtained from your municipality. Together with the responsible local administration union it draws up so-called local sewerage concepts. In these it gets determined whether a connection to a central waste water treatment plant takes place or whether you will need to erect your own plant.
We ask you to complete our upgrade questionnaire for existing domestic treatment plants in detail. We will then send you a free quotation for the upgrade.
No, due to the air injection and the corresponding movement of the particles a self-cleaning effect is obtained. This guarantees that the biofilm always stays thin. It can therefore never clog up.
No, the material does not have to be changed. The manufacturer gives a 20-year warranty for the carrier material.
The plants are sized according to the number of residents (RE). Information for the design and sizing examples can be found in DIN 4261 Part 2.
The simplest solution is to buy the bigger plant (for example, a 8-RE plant only costs € 200 more than a 4-RE plant). This is then adjusted by the service company according to the actual usage after the first maintenance check.
All domestic sewage may be introduced. The following cannot be treated:
This is no problem for WSB® plants since the biological cleaning step self-adjusts to that situation. Additionally, we or an authorised partner can adjust the aeration times in your control system to minimise unnecessary aeration and thus save energy.
No. regardless of whether the compressor is placed in the cellar or outside the building. Through the possibility of purchasing a sound-proofing cabinet no noise disturbance occurs.
All civil engineering for the installation has to be carried out by an approved company.
A foundation is not necessary, since the concrete tanks of WSB® clean plants are already fitted with a proven concrete baseplate. The only thing necessary is a cleanliness layer of gravel that is drawn off and compressed.
The special mortar for sealing the joints between the rings guarantees the same impermeability as in a monolithic tank if used properly. After the installation and before the final fitting of the equipment, a leak test is required.
Only these experts guarantee proper maintenance and thus proper functioning of your plant.
Cleaning tasks, check of the construction status, function checks of the system engineering, preparation of a maintenance report, sequence check, temperature measurement, check of settelable substances, pH measurement, sample taking for COD and BOD5, smell test, colour check waste water, visibility depth.
The maintenance costs for your plant are available from our technical experts.
In a WSB® clean plant, the only tank that requires periodic emptying is the preclarification tank. The intervals are determined by your local administration union or municipality. Normally WSB® clean plants have to be emptied every 2 years at the earliest.
For a 4 RE-plant about € 12 per person and year.
The advantage of a WSB®-plant is minimal technology with highest effectiveness.
At most twice-yearly the compressor needs a new filter.
Generally, the simplicity of the system ensures that defects are rare. If they happen nonetheless, we exchange the parts free of charge within the warrantee period of the manufacturer.
Of course? Your WSB® clean plant already fulfils future requirements for waste water treatment. Additionally, the process is constantly improved by the engineers of the Bergmann Group.