Izvorni znanstveni članak

The effectiveness of chemical-free water treatment system combining fibre filters, ultrasound, and UV for fish farming on algal control

ALEKSANDRA KRIVOGRAD KLEMENČIĆ ; Department of Sanitary Engineering, Faculty of Health Sciences, University of Ljubljana, Zdravstvena pot 5, 1000 Ljubljana, Slovenia
TJAŠA GRIESSLER BULC ; Department of Sanitary Engineering, Faculty of Health Sciences, University of Ljubljana, Zdravstvena pot 5, 1000 Ljubljana, Slovenia
DAMJAN BALABANIĆ ; Pulp and Paper Institute, Bogišičeva 8, 1000 Ljubljana, Slovenia

Sažetak

Background and Purpose: A chemical-free water treatment system
consisting of fibre filters, ultrasound, and UV for fish farming was operated in a fishpond to study its effect on the control of algae compared with a non--treated fishpond.

Materials and Methods: Phytoplankton and phytobenthos were sampled in both ponds, at the same time Chlorophyll-a, nitrates (NO3), orto-phosphates (PO4), pH, water temperature and saturationwere monitored.

Results and Conclusions: The results showed that ultrasonication caused efficient sedimentation of planktonic algae. The number of determined algal species was lower in the treated pond. The proportion of green algae and Cyanobacteria was higher in the non-treated pond, and diatoms were the predominant group of algae in the treated pond. The species Oedogonium sp., Mougeotia sp. and Spirogyra sp. were »tolerant« to ultrasonic irradiation. The successful control of algae using the chemical-free water treatment system suggests that the Chem-free water treatment system can be
a practical method to control algal bloom in fish farms.

Ključne riječi

algae; Chem-free; ultrasound; fibre filters; UV; algae control

Hrčak ID:

58004

URI

https://hrcak.srce.hr/58004

Datum izdavanja:

1.6.2010.

Posjeta: 1.669 *