Hrvatske vode, Vol. 28 No. 113, 2020.
Stručni rad
Pilot research using multi-layer filtration of water from the Jadro source
Tatjana Ignjatić Zokić
; Vododer d.o.o., Zagreb, Hrvatska
Branko Miletić
; Vododer d.o.o., Zagreb, Hrvatska
Matija Cvetnić
; Sveučilište u Zagrebu, Fakultet kemijskog inženjerstva i tehnologije, Zagreb, Hrvatska
Marinko Markić
; Sveučilište u Zagrebu, Fakultet kemijskog inženjerstva i tehnologije, Zagreb, Hrvatska
Dajana Kučić Grgić
; Sveučilište u Zagrebu, Fakultet kemijskog inženjerstva i tehnologije, Zagreb, Hrvatska
Viktorija Prevarić
; Sveučilište u Zagrebu, Fakultet kemijskog inženjerstva i tehnologije, Zagreb, Hrvatska
Sažetak
The Jadro source in Solin is used for the supply of water for human consumption to the cities of Split, Solin, Kaštela and Trogir, including the municipalities of Podstrana, Klis, Seget and Okrug. Occasionally, the appearance of abundant precipitation causes the turbidity of the source, resulting in the water that is incompliant with the regulations related to water for consumption.
A multilayer filtration medium consisting of quartz sand and anthracite is proposed as a solution to the problem of occasional turbidity of the source. Such system successfully removes the turbidity of 45 NTU to less than 4 NTUs, which complies with the current legislation. The addition of the coagulant, FeCl3, reduced the content of suspended solids i.e. turbidity and significantly reduced the use of chlorine use in the water, thus creating better conditions for water disinfection. Water disinfection and chlorine use in water were examined by the addition of sodium hypochlorite, with and without the UV post-treatment of water. In systems with post-treatment of water with UV radiation, there is a significant reduction in the use of hypochlorite as a disinfectant.
The wastewater generated by the filtration process is very easily treated using coagulation and flocculation processes and settling.
The paper presents the research results and the final proposal for the solution of occasional water turbidity in the Jadro source.
Ključne riječi
Jadro source, water turbidity, sand filtration, UV disinfection
Hrčak ID:
249864
URI
Datum izdavanja:
24.9.2020.
Posjeta: 1.074 *