Sökning: "aeration"

Visar resultat 41 - 45 av 122 uppsatser innehållade ordet aeration.

  1. 41. Nitrogen removal from municipal wastewater by mainstream Partial Nitritation/Anammox process

    Master-uppsats, KTH/Vatten- och miljöteknik

    Författare :Alessio Robiglio; [2018]
    Nyckelord :Mainstream; Deammonification; IFAS; UASB; Anammox; Anoxia; Aeration; Online; Monitoring; Inhibition; Wastewater;

    Sammanfattning : Mainstream Partial Nitritation/Anammox, also known as Mainstream Deammonification, is a promising technology for future wastewater purification that aims to remove nitrogen from wastewater in order to prevent the eutrophication. It is less costly than the traditional nitrification/denitrification process and it heads towards the direction of converting the WWTPs from energy consuming into energy producing facilities. LÄS MER

  3. 42. Ammoniumkvävereduktion vid lakvattenrening med mobil bioreaktor : vid olika temperaturer och fosfortillskott

    Master-uppsats, Karlstads universitet

    Författare :Emilia Öberg; [2017]
    Nyckelord :;

    Sammanfattning : Behovet av energieffektiva och välfungerande vattenreningssystem är stort, och växer i takt med den ökande befolkningsmängden. Lakvatten bildas då framförallt nederbörd rinner genom deponerat avfall. Problematiken kring lakvattenrening består i att bassängerna är placerade utomhus, vilket medför låga temperaturer under vinterhalvåret. LÄS MER

  4. 43. Evaluation of Partial Nitritation/Anammox processes operated in IFAS mode

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Aleksandra Zdyrska; [2017]
    Nyckelord :;

    Sammanfattning : The main aim of the study was to optimize Partial Nitritation/Anammox process operated in pilot-scale integrated fixed film activated sludge (IFAS) mode supplied with low-temperature mainstream wastewater and efficiency evaluation based on laboratory analysis and data from online sensors. Main tasks of research work were to stabilize the ongoing process and find the optimal conditions for maximizing effects of nitrogen removal. LÄS MER

  5. 44. Deammonification efficiency in combined UASB and IFAS system for mainstream WWT

    Master-uppsats, KTH/Mark- och vattenteknik

    Författare :Noureddine Khayi; [2017]
    Nyckelord :Ammonium; Nitrite; Nitrate; Deammonification; UASB; MBBR; DO; Aeration; monitoring; on-line control;

    Sammanfattning : The study is about Nitrogen removal from the low concentrated mainstream wastewater after Upflow Anaerobic Sludge Blanket reactor process (UASB) by single-stage Partial Nitritation/Anammox process in a pilot scale reactor at Hammarby Sjöstad in Stockholm. A mixture of various concentrations of dissolved oxygen and different aeration methods have been tested in the pilot scale reactor in five months divided into five periods where the temperature was set at 15° C throughout the study. LÄS MER

  7. 45. Experimental Investigation Of The Air-Water Flow Properties In The Cavity Zone Downstream A Chute Aerator

    Uppsats för yrkesexamina på avancerad nivå,

    Författare :Ebba Wargsjö; Albin Hedehag Damberg; [2017]
    Nyckelord :Air bubble entrainment; chute aerators; aerators; air concentration; cavitation; cavitation damage; cavitation bubbles; bubble frequency; scale effects;

    Sammanfattning : Chute aerators are widely used in spillways to avoid cavitation damage. When the water flow passes the aerator, two jets form – upper and lower jet. The purpose of this thesis has been to study the effects from the aerator by conducting experiments in a model with a flow depth large enough to ensure that the upper and lower jet remain separated. LÄS MER