Naslov
Coagulation and sand filtration as pretreatments for nanofiltration of rendering plant secondary effluent

Autori
Racar, Marko ; Dolar, Davor ; Špehar, Ana ; Kraš, Ana ; Košutić, Krešimir

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
4th International Symposium on Environmental Management – Towards Circular Economy, SEM2016: Book of proceedings / Katančić, Zvonimir ; Koprivanac, Natalija ; Lončarić Božić, Ana ; Kušić, Hrvoje ; Hrnjak-Murgić, Zlat - Zagreb, 2016, 88-93

ISBN
978-953-6470-77-8

Skup
4th International Symposium of Environmental Management – Towards Circular Economy

Mjesto i datum
Zagreb, Hrvatska, 07.12.2016. - 09.12.2016

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
nanofiltration ; pretreatment ; secondary effluent ; coagulation ; sand filtration

Sažetak
To reduce the fouling formation during nanofiltration (NF) of rendering plant secondary effluent, in this study, coagulation and sand filtration (SF) are used as pretreatments. Coagulation was performed in Jar tests with different concentration of Fe3+-ions (ferric(III) chloride) and pH to get an insight on their influence on residual total carbon (TC) and turbidity. From the results, optimal conditions were selected (pH 5 and 55 mg L-1 Fe3+-ions) and used for coagulation with SF as a pretreatment for NF. Coagulation achieved a high removal of TC and turbidity ; while, SF wasn‟t effective in TC removal. Nanofiltration was performed with a secondary effluent treated with coagulation and sand filtration, sand filtration, and without pretreatment to compare the pretreatment efficiency. Sand filtration didn't affect the fouling formation, but coagulation coupled with SF achieved a 29% decrease in fouling formation and a high permeate quality.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Interdisciplinarne tehničke znanosti

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