بررسی کیفیت آب رودخانه هراز براساس شاخص کیفی NSFWQI
عنوان مقاله English
Investigation the Water Quality of Haraz River Water Based on Qualitative Index of NSFWQI
نویسندگان English
Due to importance of Harazriver in supplying drinking water, pollution of agricultural water around this river and also discharging several pollutants into it, water qualitative evaluation of this river seems necessary. The purpose of this research is zoning of water quality of Harazriver using NSFWQI index. In order to recognize the effect of agricultural and industrial wastewater and residential centers, investigated the qualitative parameters of river water in a 6 months period from February 2013 to July 2014 at interface discharge from Lar dam to entry of water into the Caspian sea in 6 stations. The results showed that the amount of coliform faecal, Do, temperature, nitrate and phosphate had significant variations in the entrance of river to the flood land, so that in Sorkhrood station in all months had significant different. The water of Haraz river in 5 stations (Poloor to Karesang), had medium class of quality with index of 50-70 in most months. Whereas in Sorkhrood station, had low water quality during all months. Also, the results of statistical analysis of T-TEST on discharge rates, temperature, TDS and DO parameters showed that two periods of low and high water had significant differences.
کلیدواژهها English
