Feasibility of using an organic substrate in a wetland system treating sewage sludge: Impact of plant species.
A vertical-flow wetland system was tested for treatment of liquid sludge with high organic concentrations using an organic substrate (peat/crushed pine bark, 1/1) as growing medium. Mesocosms (1 m(3)) were planted with either Phragmites australis Cav., Typha latifolia L., or Iris pseudacorus L. The aim of the work was to determine the feasibility of using an organic substrate in treatment wetlands, through the study of its temporal patterns and of its impact on the water output quality. Results confirmed that the organic substrate can be used in such wetlands treating highly organic sludge, without clogging phenomena for the experimental period. The organic substrate released soluble organic matter but few mineral elements. Over the experimental period, substrate TOC concentration did not change while N concentration increased. Plants showed positive impact on substrate temporal patterns and also on the outflow water quality. Overall, Phragmites seemed to be more beneficial than Typha and Iris.
Wang
Runying
R
Aix-Marseille Université, Institut Méditerranéen d'Ecologie et de Paléoécologie (UMR CNRS IRD) - Diversité Fonctionnelle des Communautés Végétales, Centre Saint Charles, 3 Place Victor Hugo, Case 4, 13331 Marseille, France.
Korboulewsky
Nathalie
N
Prudent
Pascale
P
Domeizel
Mariane
M
Rolando
Christiane
C
Bonin
Gilles
G
D005240:Feasibility Studies; D007220:Industrial Waste / Q000517:prevention & control*; D010944:Plants / Q000145:classification / Q000378:metabolism*; D012722:Sewage; D013045:Species Specificity; D014874:Water Pollutants, Chemical / Q000302:isolation & purification* / Q000493:pharmacokinetics*; D018508:Water Purification / Q000379:methods*; D053833:Wetlands
D007220:Industrial Waste; D012722:Sewage; D014874:Water Pollutants, Chemical