Acta Botanica Croatica, Vol. 34 No. 1, 1975.
Izvorni znanstveni članak
The Influence of Waste Waters on Algae in the Open Collector of Zagreb at Ivanja Rijeka
Marija Tomec
; Hrvatska
Zlatko Pavletić
; Hrvatska
Ignac Munjko
; Hrvatska
Sažetak
The results of an analysis of waters from the main collector in the city of Zagreb show that the water is loaded with industrial and municipal wastes. For the purpose of protection of underground and surface waters in that region, these waters should not be allowed to flow into the receptor of the river Sava, without being purified beforehand.
In addition to the great organic and inorganic load of the collector waters, there were 70 species of algae found, that had their origin probably in brook-waters of Zagrebačka gora. However, there was a smaller number of algae (5—15) that are otherwise relatively frequent in the collector water. The number of algae found in the water after the reception of the OKI — waste waters was considerably decreased too. It was established furthermore that the microflora in the collector water was very active in the process of mineralisation of waste organic matter, especially in the summer period. That property of microflora is used by OKI to obtain activated sludge in the tank for aeration and dephenolisation.
These investigations will be continued, with a view to getting as reliable a test as possible, for establishing deleterious influence of industrial waste waters on algae and other organisms in receptors. At the same time, such and similar investigations point at the necessity of including biologists into the laboratory control of industrial cooling- and waste-waters, and the control of technological processes in biological purification of waste waters.
Ključne riječi
Hrčak ID:
157956
URI
Datum izdavanja:
31.12.1975.
Posjeta: 1.135 *