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Biological wastewater treatment with IFAS technology
Cleartec® Biotextil is a textile growth media for microorganisms and is installed to upgrade or improve municipal and industrial wastewater treatment plants. Furthermore it serves as space-saving biological treatment or pre-treatment of industrial wastewater on site. High performance affords a very compact design for new constructions of wastewater treatment plants. Its flexibility, highly structured, large active surface and high resistance against wastewater-specific chemicals make it to an excellent material for supporting the biological activity in wastewater treatment plants.
Cleartec® Module
Biological wastewater treatment with combined system
Biotextile is applied in the biological area, mainly in aerated basins. The wastewater should be pretreated mechanically. A fine rack with maximum 6 mm rod distance is recommended. Furthermore, a grit chamber, grease trap and settling tank should exist. Mostly a usual secondary clarifier is installed downstream.
Normally the system Cleartec® Biotextil is operated as a combined system. This means that the suspended biomass, as at activated sludge treatment, as well as the biomass fixed on the biotextile, so-called sessile biomass, contributes to the cleaning capacity.
Cleartec® Module
The advantages at a glance
The system Cleartec® Biotextil features a range of advantages in comparison with other systems. The essentials are briefly explained in the following:

• Structured growth media with large surfaceDSC01028
• Steady discharge value at very good BOD and nitrogen elimination
• Outstanding energy efficiency due to optimized flow
• No clogging due to flexible structure
• Possibility to check media and diffusers due to liftable supporting frames
• Acting jointly: suspended and sessile biomass
• Increase of performance at existing plants
• Relief of the secondary clarifier
• Reduction of investment and operation costs