Studies to support the development of new generation capacities and related transmission Environmental and Social Impact Assessment - Site Selection
From collected data based on the monitoring of water quality of Drenica’s River for the years 1981, 1996, 2006 and for March 2007, we can conclude that the major part of the flowing of Drenica’s River is a good quality. This is understandable because industrial objects that may cause pollution are limited. But, also the sample places are chosen in that way that the analyzed samples are taken far from polluted sources to determine the real average of water quality and the environmental capacity for dilution. The most common indicators for valuation of water quality are: organic ingredients, nutrients, inorganic nitrogen and micro pollutants. The organic matter in rivers The content of organic matter in rivers is measured by Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD5). In Tables 10-13 are shown the data of the parameters COD and BOD5 for different sample places of Drenica’s River. The data show us that the quality of rivers based on the content of organic matter is satisfied. The COD varies from 1, 90-6, 40 mg O2/l and of BOD is 1, 80-5, 92 mg O2/l. The main sources of pollution are sewage water and urban solid wastes which are thrown on the river beds. So the ammonium is formed and the oxygen is reduced and this damages the living being in water. The converting of ammonium ion in ammonium has major toxicity for the fish. The content of nutrients Phosphorus and nitrogen in rivers may cause the eutrophycation, which means the enormous growing of algae, phytoplankton, etc. which reduce the oxygen in surface water. Like ammonium the nitrogen compounds may be toxic for the fish, too. The natural content of the phosphorus in rivers is usually less than 2,5 mg/l. When the concentrations are higher than 5,0 mg/l , it is a cause of human activities. In Tables 10-13 is shown the phosphorous concentration in waters of Drenica’s River. From the tables we can see that the content of the phosphorus is low based on standards of EU. From the tables we can also see that based on _____________________________________________________________________ 21 S.C. “AGROVET”- Fushë Kosovë