The new BG-FILCOTEN green
Higher, faster, cleaner.
So far, BG-FILCOTEN green has done an outstanding job at absorbing great amounts of rainwater and filtering out impurities before they seep into the ground. The recent ÖNORM B 2506-3 standard regulates the requirements and testing methods for filter materials. As a reaction, our new BG-FILCOTEN green is an economic giant that benefits the environment: Measuring 640 mm, it is the highest substrate channel on the market, proving that sometimes size matters when it comes to efficiency and cleanliness.
The direct way back to nature
In the natural water cycle, precipitation ideally seeps directly into the ground. In reality, however, this is faced with three challenges.
- Due to increasing population, there are more and more sealed surfaces. Rainwater cannot simply seep into the ground, it has to be redirected using drainage systems. In many urban areas, this lowers the groundwater level.
- In industrial areas, precipitation contains more impurities and contaminants due to the pollution of the air.
- Not to forget road traffic and the resulting dust, salts and tire wear particles.
It is prohibited by official standards in certain states and counties and also highly questionable from an ecological standpoint – to simply discharge polluted water into the ground. Furthermore, precipitation is likely to increase in the future and the sewers are already unable to cope with redirecting water to the treatment plants today. Substrate channels absorb and filter rainwater, re-entering it into the natural water cycle by letting it seep into the ground.
New standard, new substrate
In line with the stricter requirements for technical filters, the necessary substrate thickness has increased from 150 to 300 mm. Thanks to this, the new BG-FILCOTEN green has even more efficient cleaning properties at a high seepage rate. The newly developed technical filter of the highest cleaning category is now not only applicable for water on fortified surfaces, but also for precipitation draining from zinc or cooper roofs.
Large quantities? No problem!
In the first five to fifteen minutes of very intense rainfall, the water quantities can be too much for the filter to absorb. To meet these peak quantities, the excess amounts are initially stored within the drainage channel, which allows the water to simply trickle down bit by bit. This process is called retention. The new BG-FILCOTEN green comes with a significantly increased retention volume directly beneath the intake screen. In this way, it can move greater amounts of rainwater to the outer edges without backing up, draining even larger surfaces than before. Another advantage: The water pressure and with it the seeping speed increase with higher volumes of water. The expansion of the nominal diameter from 300 to 400 mm also increases the connecting area per running meter of the drainage channel.
|Connecting areas per running meter of the |
drainage channel, depending on rain intensity:
|Connectable areas (sqm)||Rain intensity (l/s*Ha)|
The new BG-AQUA green combines tried and tested strengths with the latest technology. It offers exceptional cleaning properties and sustainability when it comes to raw materials, manufacture and application.
- Raw materials