epur nature : a company which designs and builds reed bed filters for waste water treatment from 50...
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EPUR NATURE : EPUR NATURE :
A company which designs and builds A company which designs and builds reed bed filters for waste water reed bed filters for waste water treatment from 50 to 5000 p.e. treatment from 50 to 5000 p.e.
www.epurnature.frwww.epurnature.fr
The The Phragmifilter®Phragmifilter® SystemSystem
Roussillon plant, Vaucluse, 1250 p.e
Waste water treatment by reed bed filters, according Waste water treatment by reed bed filters, according to the research of to the research of
Over
650
PLANTS BUILTIn France, but also in
Switzerland, Germany , Belgium, Spain, Portugal
…
The The Phragmifilter®Phragmifilter® SystemSystem
Treatment of wastewater by reed bed filtersTreatment of wastewater by reed bed filters
Roussillon plant, Vaucluse, 1250 p.e.
Simple operation at low cost, with low or even zero energy consumption
Reliable and efficient
Integrated treatment of sewage sludge
Perfect integration into natural landscape
Can be built with local materials by local labor
No odors, no noise, no mosquitoes
Low carbon footprint
The general principleThe general principle
Arrival of raw wastewater
1st siphon
-Stage 1 - 3 beds in parallel-
Treatment by reed bed filters
Retention of up to 90% of suspended solids
2nd siphon Discharge Collection hole
-Stage 2-
Treatment by reed bed filters – 2 beds in parallel
Dimensioning of a typical Phragmifilter® plant
If no other constraints : 1.2 m2.PE-1 at the 1st stage (first stage) and 0.8 m2.PE-1 (second stage)
To avoid clogging rest periods feeding/rest period of 3.5/7 at the 1st stage
and 7/7 at the second stage
Panorama
Design of a typical French CW fed raw wastewater designed by EPURNATURE (1st stage of a Phragmifilter®)
Dimensioning based on an acceptable organic and hydraulic load :
max. 100 g COD per m² and day (total area of first stage)max. 0,90 m dry weather hydraulic load (bed in operation)
Roussillon Phragmifilter ® CW plant : 1250 p.e. built in 1998
Filtres plantés de roseaux : Enquête Cemagref / Satese / Agences 2003-2004
134 24h monitoring of 54 two stage vertical reed bed filters in France (not only ours)
Plants between 2 months to 7 years old Mean hydraulic loading : 100 % Mean organic loading : 67 % Size : mean 410 p.e and median 325 p.e.
COD BOD SS NK Pt
Concentrations in
mg.L-1mean 88 17 16 13 7,9
Standard deviation 50 25,5 27 17 6,9
Number of samples 122 119 122 120 118
Performance
in
%
mean 88 94 94 82 30
Standard deviation 16 8,3 9,3 20,5 89,3
Number of samples 108 106 109 108 109