Učinkovitost vodnih filtrov

diplomsko delo visokošolskega študijskega programa

Aleš Žekš (Author), Marjana Simonič (Mentor), Darinka Brodnjak-Vončina (Co-mentor)

Abstract

V nalogi smo želeli preučiti učinkovitost delovanja dveh filtrnih sistemov: BRITA, ki mehča vodo z ionskim izmenjavalcem, in Oasis, ki je kompleksnejši sistem filtrnih kartuš, sestavljenih iz aktivnega oglja in keramike. Učinkovitost delovanja filtrnih sistemov smo ugotavljali s kemijsko in mikrobiološko analizo vode iz pipe in prefiltrirane vode. Merili smo fizikalno-kemijske parametre, ki bi se naj po proizvajalčevih navodilih spreminjali. Pri prvem sistemu smo kot referenčno količino dnevno zaužite prefiltrirane vode izbrali 8 L vode, kolikor je povprečno potrebno za štiričlansko družino za pitje, v drugem sistemu, ki je večji in primeren za večji odvzem vode, pa smo prefiltrirali 20 L vode. Po filtraciji smo odvzeli 1L vzorca in opravili vse analize. Ugotovili smo, da je filtrni sistem BRITA manj učinkovit, saj se že po filtraciji 30 L vode slabše odstranijo kalcijevi in hidrogenkarbonatni ioni, medtem ko se koncentracija magnezijevih ionov po 30 L skoraj več ne zniža. Vsebnost organskih snovi po filtraciji se minimalno zniža. S filtrnim sistemom Oasis se iz vode odstranijo organske snovi in klor, medtem ko se nitratov zadrži le malo. Po filtraciji 300 L v sistemu Oasis je bila filtrirana voda mikrobiološko oporečna in je vsebovala rahlo povišano koncentracijo nitritnih ionov. Takrat je treba sistem temeljito očistiti.

Keywords

pitna voda;filtrni siste;mehčanje vode;nitrati;

Data

Language:	Slovenian
Year of publishing:	2010
Source:	Maribor
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[A. Žekš]
UDC:	628.35:66(043.2)
COBISS:	14997014
Views:	2522
Downloads:	338
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	The effectiveness of water filters
Secondary abstract:	The objective of this diploma was to determine the effectiveness of two different filtrating systems: BRITA, based on the ion exchange and Oasis, consisting of a complex system of filtering cartridges made of activated carbon and ceramics (so called the green filtrating system). Chemical and microbiological analyses of filtered tap water were performed in order to determine the effectiveness of both filtrating systems. Those parameters were measured which should be removed according to the manufacturer's instructions. For the first system the 8 L of filtrated water was chosen as a reference water quantity, because according to the recommendations a 4-member-family daily consumes so much water. Using the second system which is bigger and therefore suited for industrial use, 20 L of water was filtered. After the filtration we took a 1 L of water samples for the analyses. We can conclude that the filtrating system BRITA is less effective, because after filtrating only 30 L of water, calcium, magnesium and bicarbonate are not satisfactory removed. The organic content after filtration did not decrease much. The filtrating system Oasis removes chlorine and organic substances throughout the whole experiment. However, it does not remove nitrates. After filtering 300 L of water it was microbiologically contaminated and nitrite concentration increased, therefore, the system must me immediately purified.
Secondary keywords:	drinking water;filter system;water softening;nitrates;
URN:	URN:SI:UM:
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	53 f.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;engineering;technology in general;inženirstvo;tehnologija na splošno;public health engineering;water;sanitation;illuminating engineering;sanitarna tehnika;zdravstvena tehnika;voda;sanitarne naprave;svetlobna tehnika;sewage;treatment;disposal;utilization of sewage;odpadne vode;applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;chemical technology;chemical and related industries;kemijska tehnologija;kemijske in sorodne industrije;
ID:	992720