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Thermal/electrochemical processing of slaughterhouse wastewater

Višnja Oreščanin ; Oreščanin, j.d.o.o., Zagreb, Croatia
Robert Kollar ; Napredna energija, d.o.o., Zagreb, Croatia
Karlo Nađ ; Napredna energija, d.o.o., Zagreb, Croatia

Puni tekst: engleski, pdf (389 KB) str. 91-102 preuzimanja: 70* citiraj
APA 6th Edition
Oreščanin, V., Kollar, R. i Nađ, K. (2018). Thermal/electrochemical processing of slaughterhouse wastewater. Hrvatske vode, 26 (104), 91-102. Preuzeto s https://hrcak.srce.hr/203276
MLA 8th Edition
Oreščanin, Višnja, et al. "Thermal/electrochemical processing of slaughterhouse wastewater." Hrvatske vode, vol. 26, br. 104, 2018, str. 91-102. https://hrcak.srce.hr/203276. Citirano 17.10.2021.
Chicago 17th Edition
Oreščanin, Višnja, Robert Kollar i Karlo Nađ. "Thermal/electrochemical processing of slaughterhouse wastewater." Hrvatske vode 26, br. 104 (2018): 91-102. https://hrcak.srce.hr/203276
Harvard
Oreščanin, V., Kollar, R., i Nađ, K. (2018). 'Thermal/electrochemical processing of slaughterhouse wastewater', Hrvatske vode, 26(104), str. 91-102. Preuzeto s: https://hrcak.srce.hr/203276 (Datum pristupa: 17.10.2021.)
Vancouver
Oreščanin V, Kollar R, Nađ K. Thermal/electrochemical processing of slaughterhouse wastewater. Hrvatske vode [Internet]. 2018 [pristupljeno 17.10.2021.];26(104):91-102. Dostupno na: https://hrcak.srce.hr/203276
IEEE
V. Oreščanin, R. Kollar i K. Nađ, "Thermal/electrochemical processing of slaughterhouse wastewater", Hrvatske vode, vol.26, br. 104, str. 91-102, 2018. [Online]. Dostupno na: https://hrcak.srce.hr/203276. [Citirano: 17.10.2021.]
Puni tekst: hrvatski, pdf (389 KB) str. 91-102 preuzimanja: 141* citiraj
APA 6th Edition
Oreščanin, V., Kollar, R. i Nađ, K. (2018). Termička/elektrokemijska obrada klaoničkih otpadnih voda. Hrvatske vode, 26 (104), 91-102. Preuzeto s https://hrcak.srce.hr/203276
MLA 8th Edition
Oreščanin, Višnja, et al. "Termička/elektrokemijska obrada klaoničkih otpadnih voda." Hrvatske vode, vol. 26, br. 104, 2018, str. 91-102. https://hrcak.srce.hr/203276. Citirano 17.10.2021.
Chicago 17th Edition
Oreščanin, Višnja, Robert Kollar i Karlo Nađ. "Termička/elektrokemijska obrada klaoničkih otpadnih voda." Hrvatske vode 26, br. 104 (2018): 91-102. https://hrcak.srce.hr/203276
Harvard
Oreščanin, V., Kollar, R., i Nađ, K. (2018). 'Termička/elektrokemijska obrada klaoničkih otpadnih voda', Hrvatske vode, 26(104), str. 91-102. Preuzeto s: https://hrcak.srce.hr/203276 (Datum pristupa: 17.10.2021.)
Vancouver
Oreščanin V, Kollar R, Nađ K. Termička/elektrokemijska obrada klaoničkih otpadnih voda. Hrvatske vode [Internet]. 2018 [pristupljeno 17.10.2021.];26(104):91-102. Dostupno na: https://hrcak.srce.hr/203276
IEEE
V. Oreščanin, R. Kollar i K. Nađ, "Termička/elektrokemijska obrada klaoničkih otpadnih voda", Hrvatske vode, vol.26, br. 104, str. 91-102, 2018. [Online]. Dostupno na: https://hrcak.srce.hr/203276. [Citirano: 17.10.2021.]

Sažetak
The paper presents slaughterhouse wastewater treatment implemented as a combination of thermal pre-treatment and main electrochemical treatment, with a simultaneous ozonation. The efficiency of the characteristic indicator removal and the quantity of generated sludge according to electrode types (stainless steel, iron and aluminium), treatment time (5-30 minutes) and amperage (50-100 A) was tested. The wastewater is characterized by a very unpleasant odour, high colouring value (17400 CoPt), turbidity (4230 NTU), total suspended solids (1730 mg dm-3), chemical oxygen demand (3720 mg dm-3) and biochemical oxygen demand (1870 mg dm-3) as well as increased values of ammonium (128 mg dm-3) and phosphates (93 mg dm-3). Thermal pre-treatment removed 98.23% turbidity, 89.94% colour, 75.14% total suspended solids (TSS), 49.73% BOD5 and 36.29% COD. A stainless steel electrode set proved to be the most efficient in the removal of organic indicators and ammonium and the lowest sludge volume, whereas aluminium electrodes were the most efficient in colour removal, although with the highest sludge production. The best results were achieved by a combination of all three electrode types, with a simultaneous ozonation of 20-minute contact time, amperage of 70 A and voltage of 10 V. Following the electrocoagulation / electrooxidation by stainless steel electrodes, electrocoagulation / ozonation by iron electrodes and electrocoagulation / ozonation with aluminium electrodes and the final ozonation, 100% colour, turbidity and TSS were removed as well as 99.77% COD and 99.25% BOD5, 99.98% phosphates, 99.80% ammonium and 43.86% total dissolved solids. All measured indicators complied with the conditions for discharge into the environment.

Ključne riječi
aluminium electrodes; stainless steel electrodes; electrocoagulation; slaughterhouses; wastewater; ozonation; iron electrodes

Hrčak ID: 203276

URI
https://hrcak.srce.hr/203276

[hrvatski]

Posjeta: 395 *