Študija biološke obdelave kondenzacijskih vod podjetja Cinkarna Celje : magistrsko delo

Jančič, Natalija

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Title:	Študija biološke obdelave kondenzacijskih vod podjetja Cinkarna Celje : magistrsko delo
Authors:	ID Jančič, Natalija (Author) ID Goršek, Andreja (Mentor) More about this mentor... ID Pečar, Darja (Comentor) ID Verhovšek, Dejan (Comentor)
Files:	MAG_Jancic_Natalija_2020.pdf (3,75 MB) MD5: E82BBB4443343E5F7EF65384C8DA61F4 PID: 20.500.12556/dkum/85fe24f4-fd31-4f06-9b42-d77c122ec355
Language:	Slovenian
Work type:	Master's thesis/paper
Typology:	2.09 - Master's Thesis
Organization:	FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:	V podjetju Cinkarna Celje že leta preizkušajo možnosti zniževanja KPK in BPK vrednosti kondenzacijskih vod. Z namenom preizkušanja biološkega čiščenja organskih snovi, ki so prisotne v kondenzacijskih vodah, je bila postavljena pilotna biološka čistilna naprava v obliki kapljalnega bioreaktorja. V notranjosti so plastični nosilci, na katerih se ob stiku z odpadno vodo tvori biofilm. Cilj preizkušanja biološkega čiščenja je bil doseči vrednosti KPK odpadne vode na iztoku pod 100 mg O2/L. Z laboratorijskimi eksperimenti smo želeli preveriti možnost rasti biofilma na nosilcih ob stiku s kondenzacijsko vodo in njihov učinek čiščenja. Z začetnimi eksperimenti smo se osredotočili na razvoj aktivnega biofilma na nosilcih v pilotni napravi in v laboratoriju. Rast biofilma smo pospešili z dodajanjem ocetne kisline in hranil v obliki raztopine dušika in fosforja. Količine dodatkov smo med obratovanjem prilagajali glede na porabo. Nadaljnja študija na pilotni napravi je vključevala serijo vzorčenj med kontinuiranim obratovanjem. Rezultati analiz so pokazali, da je na učinkovitost čiščenja organskih snovi vplivalo mesto vzorčenja pod čistilno napravo, kar je nakazovalo na nehomogeno obratovanje naprave. Ob kontinuiranem obratovanju smo dosegli povprečno učinkovitost čiščenja KPK 46 % in maksimalno 75 %. Ob določenih pogojih je bilo možno doseči iztočne vrednosti KPK kondenzacijske vode pod 100 mg O2/L. Z laboratorijskimi poskusi smo dokazali, da je rast biofilma na izbranih nosilcih, potopljenih v kondenzacijsko vodo z dodatki, ki pospešijo rast biofilma, možna. Z nastalim biofilmom je mogoče zmanjšati količino prisotnih organskih snovi v kondenzacijski vodi z zadostnim zadrževalnim časom.
Keywords:	kondenzacijske vode, KPK, BPK5, kapljalni bioreaktor, biofilm
Place of publishing:	Maribor
Place of performance:	Maribor
Publisher:	[N. Jančič]
Year of publishing:	2020
Number of pages:	XII, 85 f.
PID:	20.500.12556/DKUM-78241
UDC:	602.42-7:665.652.5(043.2)
COBISS.SI-ID:	45262851
NUK URN:	URN:SI:UM:DK:ZVDRCXSV
Publication date in DKUM:	04.01.2021
Views:	1279
Downloads:	162
Metadata:
Categories:	KTFMB - FKKT
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Licences

License:	CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International

Link:	http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:	The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:	24.11.2020

Secondary language

Language:	English
Title:	Study of biological treatment of Cinkarna Celje condensation waters
Abstract:	The company Cinkarna Celje has been testing the possibilities of reducing COD and BOD5 values of condensation waters for years. With the purpose of the biological cleansing of organic substances present in the condensation waters testing, a pilot biological treatment plant in the form of a trickling filter bioreactor was constructed. Inside, there are plastic carriers on which a biofilm is formed upon contact with wastewater. The goal of the biological treatment test was to achieve the outlet COD values of wastewaters below 100 mg O2/L. By laboratory experiments, we wished to check the possibility of biofilm growth on the carriers when in contact with condensation water and their cleaning effect. With initial experiments, we focused on the development of active biofilm on carriers in the pilot plant and the laboratory. Biofilm growth was accelerated by the addition of acetic acid and nutrients in the form of a solution of nitrogen and phosphorus. The quantities of additives were adjusted during operation according to consumption. A further study on the pilot plant included a series of sampling during continuous operation. The results of the analyses showed that the cleaning efficiency of organic substances was influenced by the sampling location under the treatment plant, which indicated the inhomogeneous operation of the plant. With continuous operation, we achieved an average COD cleaning efficiency of 46% and a maximum of 75%. Under certain conditions, it was possible to achieve COD levels of condensation water below 100 mg O2/L. We proved with the laboratory experiments that the growth of biofilm on the selected carriers submerged in condensation water with additives that accelerate the growth of biofilm is possible. With the emerged biofilm, it is possible to reduce the amount of organic matter present in the condensation water with sufficient retention time.
Keywords:	condensation waters, COD, BOD5, bioreactor, biofilm

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