Clearfox® nature is a prefabricated small sewage treatment plant according to Euro standard 12566-3 which is
manufactured in a range of size from 1-8 persons (p.e). The treated effluent water can be charged into a percolation
area/underground soakaway, in watercourses or even returned back to reuse this water after a treatment.
If there is enough gravity, the system can operate without any electricity.
The cleaning process happens in three stages. The raw sewage water enters the primary treatment.
The primary sludge settles and is reduced in volume by undisturbed digestion while absence of oxygen.
At the end of the pretreatment, the hydraulic flow is reduced, the hydraulic peaks are buffered and balanced out over the day.
The mechanical treated effluent is then constantly passed over the day in the following bioreactor.
The bioreactor consists of a system of aeration and carrier elements that are arranged in a defined order in layers
one above the other. To distribute the water on the upper surface of the bioreactor there is an equipment consisting of a tip
and a distribution base. The reactor effluent from the pretreatment fills the tip, which drains the water (with a flush) onto
the distribution base. The sewage spilled into the underlying system of filling elements and passes it from the top to the
bottom. On the carrier elements settle bacteria, which clean the water. By means of the so-called cascaded plug flow the water
is completely purified in one single pass. Parallel to this the increasing secondary sludge is reduced in volume and
biological degreeable. The volume is discharged with the effluent; the concentration is still below the legal requirements.
This technology is the first time to be apllied in a small sewage treatment plant. Due to this there is no additional
clarifier such as in a conventional biofilm system necessary. The system of filling material, with its loading facility
is in balance with the degradation, biomass distribution and rinsing. Therefore, the filling elements need not to be cleaned
or replaced as in biofilters, the usage is - by proper operation- for lifetime totally without any changes.
The simple structure and the used biofilm technology, makes this system ideal for decentralized structures.
Main features are a very stable operation (underload, overload no problem), and enormous cost savings in the long run,
because of less disposal costs and no use of technical parts.
Normally the plant achieves the required cleaning performance within a short time, moreover the carrier elements can
optionally be enriched with enzymes to speed up the startup time.
In case of not enough gravity for operation without energy there is a power module available, including mini pump which lifts
the purified water to the required height. Alternatively, the mini-pump also can be connected to a main power supply
If using the treated water as process water,
anhygienic modul can be connected downstream after the plant.
By inserting filter bags (textile screen) in the pre-treatment and composting the filtration residue (sludge),
a conventional sludge disposal will not be necessary.
tested acc. EN 12566-3 ideal for:
The development of this innovative treatment system was supported by the
Bavarian Council for Economic Affairs, Infastructure, Traffic and Technology.
Product features:
Reliable and safe ...
The implemented biofilm ClearFox® nature