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Numerical model for prevention of ctitical [i.e. critical] defficit [i.e. deficit] of dissolved oxygen in ponds | Numericki model prevencije kriticne kolicine rastvorenog kiseonika u sanitarnom bazenu
2008
Djordjevic, Dj.R., Gradjevinsko-arhitektonski fakultet, Nis (Serbia) | Antanasijevic, C.Lj., Gradjevinsko-arhitektonski fakultet, Nis (Serbia) | Miljojkovic, D., JP Srbija-vode, Beograd (Serbia)
One of the last stages in purification of waste water is by aquaculture pond using macro biological cells - fishes. In such outdoor ponds, oxygen depletion events can occur at anytime, but most likely to cause fish kills during summer hot weather. Aquaculture pond model can predict dissolved oxygen using small number of measurements and very simple numerical model. Alarm system can be activated urgently when the oxygen level drops below a certain concentration, depending on fish species. Such a model is realized for WWTP at Citluk coal mine, close to Sokobanja in Serbia, and explained in this paper.
显示更多 [+] 显示较少 [-]Bioaccumulation of Mn, Cd and Pb by aquatic macrophytes in the area of Bardaca fish pond [Bosnia and Herzegovina]
2007
Maksimovic, T.,Prirodno-matematicki fakultet, Banja Luka (Bosnia and Herzegovina) | Stankovic, Z.,Prirodno-matematicki fakultet, Novi Sad (Serbia) | Ilic, P.,Institut zastite, ekologije i informatike, Banja Luka (Bosnia and Herzegovina)
The contents of heavy metals (Mn, Pb, and Cd) in water, sediments and shoots of emersed plants Phragmites communis, Typha latifolia and Typha angustifolia in the area of Bardaca fish pond were analyzed. Species Typha latifolia has shown the best ability for the bioaccumulation of heavy metals tested. Therefore, this species could be recommended as the phytoremediator of these pollutants from polluted waters. The results of this study indicate that the accumulation of tested elements in the water, and their availability to plants are still far from the critical level which may cause disturbance of balans in the Bardaca ecosystem.
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