1. EPUR NATURE : A company which designs and builds reed bed filters for waste water treatment from 50 to 5000 p.e. www.epurnature.fr

2. The Phragmifilter® System Roussillon plant, Vaucluse, 1250 p.e Waste water treatment by reed bed filters, according to the research of Over 650 PLANTS BUILT In France, but also in Switzerland, Germany, Belgium, Spain, Portugal …

3. The Phragmifilter® System Treatment 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

4. The general principle Arrival of raw wastewater 1 st siphon -Stage 1 - 3 beds in parallel- Treatment by reed bed filters Retention of up to 90% of suspended solids 2 nd siphon Discharge Collection hole -Stage 2- Treatment by reed bed filters – 2 beds in parallel

5. Dimensioning of a typical Phragmifilter® plant  If no other constraints : 1.2 m 2.PE -1 at the 1 st stage (first stage) and 0.8 m 2.PE -1 (second stage)  To avoid clogging  rest periods  feeding/rest period of 3.5/7 at the 1 st stage and 7/7 at the second stage

6. Panorama

7. 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)

9. Roussillon Phragmifilter ® CW plant : 1250 p.e. built in 1998

11. Filtres plant é s 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. CODBODSSNKPt Concentrations in mg.L -1 mean881716137,9 Standard deviation5025,527176,9 Number of samples122119122120118 Performance in % mean8894 8230 Standard deviation168,39,320,589,3 Number of samples108106109108109