Login

Voor bepaalde dienstverlening is inloggen noodzakelijk: een attendering op tijdschriftartikelen, attendering op onderwerp, voor het aanvragen van een tijdschriftartikel of het lenen van een boek (zie ook Inloggen/registatie).

De Hydrotheek website maakt gebruik van de Login van Bibliotheek Wageningen University & Research.

Log in
log in met uw e-mail adres, of register as a new user


Log in voor Wageningen University & Research medewerkers en studenten
Wageningen University & Research medewerkers en studenten dienen in te loggen bij Wageningen University & Research Digital Library (rechts boven). Na login bij de Digital Library sluit het venster en refresh (F5) de Hydrotheek pagina. Nu bent u met uw Wageningen University & Research account bij de Hydrotheek website ingelogd.

Hydrotheek

Record nummer 2238057
Titel Removing iron under anoxic conditions : removing iron by operating rapid sand filters in intermittent regeneration mode
toon extra info.
F. Schoonenberg Kegel
Auteur(s) Schoonenberg Kegel, F.
Uitgever Delft : TU Delft
Jaar van uitgave 2015
Pagina's 103 p
Online full text
Publicatie type Studentenverslag
Taal Engels
Toelichting (Engels) Aeration and rapid sand filtration are common practice for the treatment of iron, manganese and ammonium containing ground water for more than a century. Nevertheless, this process has not become obsolete. On the contrary, this thesis assumes that enhanced rapid sand filters remain standard treatment technology in the 21st-century. Iron can be removed by homogeneous, heterogeneous and biological oxidation. The potential advantages of heterogeneous iron oxidation over homogeneous iron removal are high filtration rates, excellent iron removal and reduced losses of backwash water as demonstrated by the excellent performance of the pre-filters of water treatment plant Grobbendonk. Heterogeneous iron oxidation dominates at Grobbendonk because the supernatant is slightly anoxic and the pH is low. Thus adsorption and oxidation occur simultaneously. The target feed water in this thesis is deep anoxic ground water, characterized by high iron and methane concentrations. The typical high methane values demand intensive aeration to prevent excessive formation of mucus or slime by methanotrophic bacteria. This research focuses therefore on heterogeneous iron oxidation that can be applied by running an adsorptive filter under anoxic conditions and regenerate it intermittently under oxic conditions. In other words, adsorption and oxidation are separated in time. This work consists of three main parts: characterization of filter medium, batch experiments and pilot plant experiments.
Betrokken instanties Technische Universiteit Delft
Reacties
Er zijn nog geen reacties. U kunt de eerste schrijven!
Schrijf een reactie
 

To support researchers to publish their research Open Access, deals have been negotiated with various publishers. Depending on the deal, a discount is provided for the author on the Article Processing Charges that need to be paid by the author to publish an article Open Access. A discount of 100% means that (after approval) the author does not have to pay Article Processing Charges.

For the approval of an Open Access deal for an article, the corresponding author of this article must be affiliated with Wageningen University & Research.

U moet eerst inloggen om gebruik te maken van deze service. Login als Wageningen University & Research user of guest user rechtsboven op deze pagina.