Meer dan schoon : handboek ruimtelijke inrichting helofytenfilters

MEER DAN SCHOON

handboek ruimtelijke inrichting helofytenfi lters

Judith Berns

Johan Bruinenberg

Juni 2002

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DEEL I

helofytenfi lter functie en gebruik

Over helofytenfi lters zijn nog weinig praktijkervaringen vastgelegd. De literatuur is niet up-to-date en noemt vaak randvoorwaarden en uitgangspunten (ook wel bandbreedtes genoemd) die niet overeen komen met de praktijk. Door middel van interviews met specialisten is de praktijk van het helofytenfi lter naar voren gekomen. In dit deel wordt de literatuur aan de praktijk getoetst. Maar eerst worden de drie verschillende helofytenfi lters met elkaar vergeleken.

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helofytenfi lter met meerwaarde

Naast de zuiveringsfunctie kan een helofytenfi lter ook gebruikt worden voor andere functies. In Handboek Zuiveringsmoerassen voor Licht Verontreinigd Water (pag. 27, STOWA 2001-09) zijn deze omschreven als secundaire functies, dit zijn: waterretentie, natuurwaarde, recreatie, riet-biezenteelt en landschappelijke waarde. Aandachtspunten en mogelijkheden voor het integreren van vier van deze functies worden in dit deel van het rapport ‘Meer dan Schoon’ belicht. Bij de mogelijkheden wordt rekening gehouden met de invloed op de zuiverende werking en negatieve invloeden worden zo klein mogelijk gehouden.

Landschappelijke waarde is eigenlijk geen functie maar bestaat uit een aantal aspecten waaronder belevingswaarde, landschappelijke inpassing en landschappelijke kwaliteit. Het aspect belevingswaarde wordt bij de functie recreatie behandeld. De aspecten inpassing van een helofytenfi lter in het landschap en landschappelijke kwaliteit van een helofytenfi lter wordt in het volgende deel van dit rapport gesproken.

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