PPT presentation Phragmifilter

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

The Phragmifilter® System 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 …

Roussillon plant, Vaucluse, 1250 p.e

The Phragmifilter® System Treatment of wastewater by reed bed filters

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

Roussillon plant, Vaucluse, 1250 p.e.

The general principle

-Stage 1 - 3 beds in parallelArrival of raw wastewater

Treatment by reed bed filters Retention of up to 90% of suspended solids

1st siphon

2nd siphon

-Stage 2Treatment by reed bed filters

– 2 beds in parallel

Collection hole

Discharge

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.

Concentrations in mg.L-1

Performance in %

COD

BOD

SS

NK

Pt

mean

88

17

16

13

7,9

Standard deviation

50

25,5

27

17

6,9

Number of samples

122

119

122

120

118

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