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Author:Svarvar, Andreas
Title:Naturenligt system för avancerad behandling av renat avloppsvatten samt rekreation
Utilizing a constructed wetland for treatment of effluent as well as for recreation
Publication type:Master's thesis
Publication year:2013
Pages:124      Language:   swe
Department/School:Yhdyskunta- ja ympäristötekniikan laitos
Main subject:Vesihuoltotekniikka   (Yhd-73)
Supervisor:Vahala, Riku
Instructor:Rantanen, Pirjo ; Mäkinen, Johanna
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
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Location:P1 Ark Aalto     | Archive
Keywords:constructed wetland
watertreatment
phosphorus reduction
nitrogen reduction
park
anlagd våtmark
vattenrening
fosforreducering
kvävereducering
park
Abstract (eng): Different types of wetlands have been used a long time in warm climates for treatment of water and have recently also seen more and more use in colder climates.
Different methods, more or less natural, have been applied in different places depending on the desired function.

This thesis has been compiled for Vaasan Vesi as an investigation if the area outside of Påttska wastewater treatment plant in Vaasa is suitable for such a system.
The system will receive effluent from the treatment plant and should at the same time provide an opportunity for recreation.

To examine this, principles regarding the design of such systems were compiled.
Also, some theories regarding the design of parks were analysed as to offer a basis for the combining of the two.

The natural systems that were analysed are surface runoff, slow and fast infiltration as well as the following types of wetlands; natural, constructed with free water surface (FWS) and constructed with subsurface flow (SSF).

Principals for the design of these systems are presented and utilized in the choosing of a suitable system for Pattska wastewater treatment plant.
SSF was chosen for a pilot project as a suitable system with some applications.
Abstract (swe): Olika typer av våtmarker har användas längre för vattenrening i varma klimat och har på senare tid även börjat användas i nordligare klimat.
Olika metoder, mer eller mindre naturenliga, har tillämpats vid olika platser beroende på önskad funktion.

Detta examensarbete har sammanställts på önskan av Vasa Vatten som en förundersökning ifall området utanför Påttska reningsverket i Vasa lämpar sig för ett naturenligt reningssystem.
Detta system skall ta omhand utsläppsvattnet från reningsverket och bör samtidigt erbjuda viss möjlighet till rekreation.

För att undersöka detta sammanställs ett antal grundprinciper kring utformningen av ett antal naturenliga reningssystem som redan finns i bruk.
Dessutom granskas viss teori kring utformningen av parker för att ha en grund vid sammanförseln av reduktionsfunktion och rekreation.

De typer av naturenliga system som granskas är ytavrinning, snabb och långsam infiltration samt följande typer av våtmarker; naturliga, anlagda med öppen vattenyta (free watersurface) och anlagda med flöde under ytan (subsurface flow).
Principer för utformningen för dessa olika naturenliga reningssystem presenteras och utnyttjas vid valet av ett passande system för Påttska reningsverket.
Som anpassningsbart system presenteras ett pilot-projekt baserat på SSF med vissa tillämpningar.
ED:2013-06-14
INSSI record number: 46875
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