Primerjava razprševanja zraka v aeracijskih bazenih komunalnih čistilnih naprav

diplomsko delo visokošolskega strokovnega študijskega programa I. stopnje

Sanja Strah (Author), Darko Goričanec (Mentor), Danijela Doberšek (Co-mentor)

Abstract

Komunalne čistilne naprave (KČN) omogočajo čiščenje odpadne vode do zadovoljive kakovosti, primerne za izpust v naravo. V KČN si sledi vrsta različnih postopkov čiščenja. Eden izmed njih je biološko čiščenje, kjer se kisik umetno dovaja v aeracijske bazene. Za dovajanje kisika obstajajo različne vrste puhal in difuzorjev, ki za obratovanje potrebujejo veliko energije in posledično prinašajo visoke obratovalne stroške. Kadar se načrtuje gradnja čistilne naprave je pomembno, da bo dosegala visoko stopnjo čiščenja in da bo ekonomsko učinkovita, kar pomeni, da bo obratovala s čim manjšimi obratovalni stroški. Diplomsko delo podaja primerjavo različnih puhal in difuzorjev za vnos kisika v aeracijske bazene. Podane so prednosti in slabosti uporabe ter primerjava stroškov obratovanja in vzdrževanja različnih puhal in difuzorjev. Posebna pozornost je namenjena primerjavi centrifugalnih puhal, ki so zelo pogosto instalirana v čistilne naprave in novejšim turbo puhalom. Rezultati kažejo, da največje prihranke pri porabi energije in nizke stroške obratovanja omogočajo visoko hitrostna turbo puhala, saj so 10% - 20% energetsko bolj učinkovita.

Keywords

odpadne vode;čistilne naprave;aeracija;puhala;difuzorji;diplomske naloge;

Data

Language:	Slovenian
Year of publishing:	2016
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[S. Strah]
UDC:	628.32:696.135(043.2)
COBISS:	20337942
Views:	923
Downloads:	72
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	COMPARISON OF AIR DISPERSION IN AERATION TANKS OF WASTEWATER TREATMENT PLANTS
Secondary abstract:	Wastewater treatment plants provide wastewater purification processing to a level of quality that allows its release into the environment. During the treatment in the plant wastewater undergoes various purification processes. In biological purification processes oxygen is typically pumped into aeration tanks in quantities that ensure aerobic decomposition. Various types of blowers and diffusers are used to pump oxygen into aeration tanks - these however require huge amount of energy for operation and it's cost represents high proportion of plant's overall operational costs. Design of wastewater treatment plants needs to ensure plant's overall effectiveness, environmental sustainability and economic efficiency, which includes minimising operational costs. This diploma work compares various blowers and diffusers that are used for oxygen transfer to the aeration tanks. Advantages and disadvantages of various blowers and diffusers are presented, including presentation of operational features and their contribution to the overall cost of plant operation. Thesis focuses in particular to the comparison of centrifugal blowers, which are most commonly used in plants today, and newer turbo blowers. Comparison shows that the largest savings in consumption of energy and consequently largest reduction of operational costs can be accomplished by using high-speed turbo blowers as these provide 10~20% better energy efficiency.
Secondary keywords:	waste water;wastewater treatment plant;aeration;blower;diffuser;
URN:	URN:SI:UM:
Type (COBISS):	Bachelor thesis/paper
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	IX, 46 str.
ID:	9162534