Sürdürülebilir Kalkınma Amaçları
Yayınlar
- BildiriAçık Erişim2017Fluoride levels in the Eastern Black Sea Basin streams, Turkey
Bayram, A.; Satilmiş, U.; Nas, S.S.; Kemer, B.
The aim of this study is to monitor the fluoride ion (F-), as well as chloride ion (Cl-), variation in the Eastern Black Sea Basin streams, and to evaluate drinking water quality of these streams, with reference to national and international directives and guidelines. The water samples (240) were semimonthly collected from three surface water resources, namely from the Degirmendere and Galyan streams in Trabzon Province, the biggest city on the Southeastern Black Sea Coast with a total population of 768 417, and the Harşit Stream in Gümüşhane and Giresun provinces. The monitoring results have revealed that the average F-concentration had varied between 0.154 and 0.200 mg/l in the Degirmendere Stream and between 0.156 and 0.163 mg/l in the Galyan Stream, respectively. However, the treated stream waters had lower F-concentrations, varying between 0.010 and 0.080 mg/l, than the untreated stream waters. In the Harşit Stream, the average F-concentrations were at relatively higher values, which ranged from 0.211 to 0.296 mg/l, in the uppermost stations, however showed a steadily decreasing trend throughout the lowermost stations and fell from 0.230 to 0.141 mg/l due to the hydropower dam reservoirs, namely Torul, Kürtün, and Akköy, operated in the watershed. The average Cl-concentrations have varied between 2.00 and 6.48 mg/l. On the one hand, the waters from the Degirmendere, Galyan, and Harşit streams are classified as high quality, considering the upper threshold values of 1.5 mg F-/l and 250 mg Cl-/l. On the other hand, these streams can be regarded as the fluoride-poor water resources.
- MakaleYalnız künye2008Effects of some water quality parameters on the dissolved oxygen balance of streams
Nas, S.S.; Bayram, A.; Nas, E.; Bulut, V.N.
The Galyan Stream basin supports the water of Atasu Dam, which will provide domestic water for Trabzon province in Turkey. The Galyan Stream empties into Deǧirmendere Stream and their water into the Black Sea that these streams are important watersheds in northeastern Turkey. Water samples were periodically taken from Temelli site (Galyan Stream), Deǧirmen site (Kuştul Stream) and Çiftdere site (Galyan Stream). In this study, at first, variations of dissolved oxygen profile are determined from dissolved oxygen, temperature and carbonaceous biochemical oxygen demand measurements by using Point Resources Streeter-Phelps equation. Water samples are taken from the Galyan and Kuştul Streams. Water quality parameters were analyzed for both streams and evaluated according to the Turkish Water Pollution Control Regulation (TWPCR). Critical dissolved oxygen deficiency values, which were calculated for monthly average (2004 April-2005 January) and annual averages (2000-2004), are seen to be over the limit value in the Galyan Stream having first class water quality in terms of dissolved oxygen concentration, temperature and biochemical oxygen demand. In the following it is disclosed that treatment isn't required. That study shows that minimum dissolved oxygen limit value (8 mgL-1), which is desired in domestic waters, is under the limit value in July, August and September months in case of a mixture.