شناسه هاي افزوده :
نگارستان ، حسين ، همكارطرح , پورنگ، نيما ، همكارطرح , رامين، محمود ، همكارطرح , واردي، ابراهيم ، همكارطرح , فارابي، محمد وحيد ، همكارطرح , واحدي، فريبا ، همكارطرح , علومي ، يوسف ، همكارطرح , يونسي پور، حوريه ، همكارطرح , يونسي پو، رحوريه ، همكارطرح , نصراله تبار،عبداله ، همكارطرح , صفري، رضا ، همكارطرح , يعقوب زاده، زهرا ، همكارطرح , لالوئي، فرامرز ، همكارطرح , طهماسبي،مرتضي ، همكارطرح , رضايي،مريم ، همكارطرح
چكيده انگليسي :
Abstract
This study was conducted to determine water quality of suface water (7 stationts), ground water (5 stations) and wastwater (4 stations) at Haraz River during instuction of Mangol Dam in 2009-2010. This study is to follow physico-chemical fluctutation of waters and compared the data obtained with previous studies and standard levels. Results of current study showed that annual mean with standard error of temperatute, DO, BOD5, COD, HCO3-, CO32-, TA, Ca2+, Mg2+, TH, TSS, TDS, Cl-, PO43-, NH4+, NO2- and NO3- were observed 12.7 (±0.61) centigrade, 10.13 (±0.12), 2.1 (±0.1), 7.71 (±0.99), 28.1 (±6.1), 14.34 (±1.64), 36.30 (±2.33), 64.66 (±2.34), 28.84 (±1.52), 271.62 (±8.41), 0.37 (±0.03), 0.30 (±0.02), 28.02 (±1.96), 0.06 (±0.01), 0.010 (±0.001) and 0.94 (±0.03) mg/l, pH was 8.00 (±0.02) and EC 0.50 (±0.02) ms/cm in surface water. The annual mean with standard error of temperatute, HCO3-, CO32-, TA, Ca2+, Mg2+, TH, TSS, TDS, Cl-, PO43-, NH4+, NO2- and NO3- were observed 21.62 (±1.03) centigrade, 54 (±5), 11 (±5), 57 (±5), 208.6 (±42.5), 109 (±23), 1088 (±165), 0.065 (±0.017), 0.97 (±0.11), 317.8 (±76.2), 0.25 (±0.06), 0.06 (±0.01), 0.0007 (±0.0001) and 0.78 (±0.05) mg/l, pH was 7.37 (±0.07) and EC 1.98 (±0.23) ms/cm in underground water. In addition, the annual mean with standard error of temperatute, DO, BOD5, COD, TSS, TDS, and NO3- were observed 12.7 (±0.61) centigrade, 13.59 (±0.87), 9.80 (±0.12), 2.22 (±0.18), 7.54 (±1.02), 0.50 (±0.03), 0.320 (±0.008) and 0.990 (±0.016) mg/l, pH was 7.95 (±0.02) and EC 0.64 (±0.01) ms/cm in wastewater. Qualiy of surface water of Haraz River and its branches were almost contained suitable for usual applications, but sometimes the quality of surface water based on BOD5 need to more attention for man uses (such as supply of drinking water). In addition, the quality of surface water was relatively suitable for aquatic based on the aquatic standard levels. Results also showed that water quality index (WQI) was declined from uperstream to downstream and some parameters were not in standard ranges. The quality of surface water classified in group II at all stations based on water classification rules which it shows serious water quality changes due to environmantal destroyed and domestic, agriculture sewage pollutions. Groundwater were affeced by different springs at middle and downstreams which they cuased change physico-chemical charactristics and water quality. Wastewater was classified from good to moderate based on BOD5. The quality of wastewater was declined at donwstream with decreasing DO and pH and increasing BOD5 and pollutants.
Keywords: Physico-chemical
