Green wall development for greywater treatment and heat recovery : master thesis no.: 74/II. VOI

Rutar Polanec, Valentina (avtor), Atanasova, Nataša (mentor), Kitanovski, Andrej (komentor), Pucher, Bernhard (komentor)

Commercially available green walls can be beneficial to urban landscapes, but if designed in a way such that tap water is used for their irrigation, they can be quite voracious consumers of water that are not optimal for use in arid areas. If they were designed to treat greywater (GW), they could become economical and suitable for all environments, especially in dry climates. GW is a promising irrigation candidate given its continuous production and its composition of organic matter and nutrients to support healthy plant growth. In addition, GW can be used as heat source for preheating domestic hot water. In this thesis, heat recovery systems were overviewed and those that are most suitable were proposed for further studies on GW in combination with green walls, while a green wall system for GW treatment was tested in detailed experiment by designing and building a pilot. Over a relatively short period of time, i.e. four months, for the purpose of establishing suitable biological conditions, a laboratory-pilotscale experiment was conducted. The objectives were to provide recommendations and determine the design parameters for GW treating green wall systems with horizontal flow. The treatment performance of the green wall reached a removal of up to 70% for COD, 74% for BOD, 20% NH4-N and 72% NO3- N, with an organic loading rate of 33 g COD/m2d and 7 g BOD/m2d. The effluent from the green wall design satisfied several national guidelines for irrigation, environmental and restricted reuse.

• Jezik: Angleški jezik
• Ključne besede: graduation thesis, master thesis, green wall, living wall, greywater reuse, closing the nutrient cycle, heat recovery from greywater, heat recovery from greywater, drain water heat recovery system
• Vrsta gradiva: Magistrsko delo/naloga
• Tipologija: 2.09 - Magistrsko delo
• Organizacija: FGG - Fakulteta za gradbeništvo in geodezijo
• Kraj izida: Ljubljana
• Založnik: [V. Rutar Polanec]
• Leto izida: 2021
• Št. strani: XX, 133 str.
• PID: 20.500.12556/RUL-124991
• UDK: 628.161.2:633/635.043(497.4)(043.3)
• COBISS.SI-ID: 63764227
• Datum objave v RUL: 27.02.2021

RUTAR POLANEC, Valentina, 2021, Green wall development for greywater treatment and heat recovery : master thesis no.: 74/II. VOI [na spletu]. Magistrsko delo. Ljubljana : V. Rutar Polanec. [Dostopano 1 april 2025]. Pridobljeno s: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=slv&id=124991

Sekundarni jezik

• Jezik: Slovenski jezik
• Naslov: Razvoj zelene stene za čiščenje sive vode in prenos toplote : magistrsko delo št.: 74/II. VOI

Izvleček

Komercialno dostopne zelene stene nudijo številne prednosti v urbanem okolju. Kljub temu, v primeru namakanja s pitno vodo, lahko postanejo velike porabnice vode in zatorej zelene stene niso primerne za uporabo v suhem podnebju. Če bi bile zasnovane za čiščenje sive vode (SV), bi postale ekonomične in primerne za vsa okolja, zlasti v sušnih območjih. SV je obetaven vir vode za namakanje, predvsem zaradi njene stalne proizvodnje ter vsebnosti organskih in hranilnih snovi za uspevanje rastlin. Poleg tega, se SV lahko uporablja kot vir toplote za predhodno segrevanje sanitarne tople vode. V okviru magistrskega dela smo na podlagi pregleda strokovne literature predlagali najprimernejši sistem za prenos toplote v kombinaciji z zelenimi stenami za namen nadaljnjih študij o SV. Nato smo zasnovali pilotni sistem zelene stene za čiščenje SV ter v razmeroma kratkem času, tj. štirih mesecih, za vzpostavitev primernih bioloških pogojev, izvedli laboratorijsko-pilotski poskus. Cilji magistrskega dela so bili doseči priporočila koncentracij snovi na iztoku iz zelene stene ter določiti dizajn parametre zelenih sten za čiščenje SV z vodoravnim tokom. S čiščenjem SV na zeleni steni smo dosegli 70 % KPK, 74 % BPK, 20 % NH4-N in 72 % NO3-N učinkovitost, z organsko obremenitvijo SV 33 g KPK/m2d in 7 g BPK/m2d. Ob koncu eksperimenta so koncentracije snovi na iztoku iz zelene stene ustrezale več različnim nacionalnim smernicam za namakanje, izpust v okolje in ponovno uporabo.

• Ključne besede: gradbeništvo, magistrska dela, zelena stena, ponovna uporaba sive vode, zapiranje kroga hranil, prenos toplote iz sive vode, prenosnik toplote