Shayesteh Keivan; Mehran Khojasteh; Niayesh Shayesteh; MohammadJavad Khani; Farzad Zahmati; Vahid Vahid fard
Abstract
Background & objective: Balkhli River, which flows into Yamchi Dam, is the main supplier of drinking water in Ardabil City. This research aims to investigate the effect of the Ghaynarjeh Spring on Balkhli River based on surface waters quality indices.Materials & Methods: First, monthly monitoring ...
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Background & objective: Balkhli River, which flows into Yamchi Dam, is the main supplier of drinking water in Ardabil City. This research aims to investigate the effect of the Ghaynarjeh Spring on Balkhli River based on surface waters quality indices.Materials & Methods: First, monthly monitoring and analysis of Ghaynarjeh spa spring (station 1), river before acceptance and after acceptance of spring water (stations 2 and 3) was done for one year. Despite the low discharge of the spring compared to the river, The concentration of some cations and anions in the river increased greatly. In this article, by determining IRWQISC as the surface water quality index of Iran and NSFWQI as an international index, the water quality for three stations was determined.Results: The results showed that the quality of the river water after entering the spring water was degraded; In other words, the IRWQISC index of the quality of the river's water quality decreased from relatively good to average. Due to the presence of about 2,000 ppb of arsenic, about 7,000 ppb of iron and about 2,500 ppb of manganese in Ghaynarjeh Spring of Nir City, Therefore, the IRWQIST index was also considered in this research. As a result of entering the spring into the river, the river's toxicity index dropped two levels from a relatively good condition to a relatively bad one.Conclusion: Considering the high impact of ghaynarjeh spring on the quality of Balkhli Chai River from the perspective of IRWQISC and especially IRWQIST indicators and considering the importance of Balkhli Chai River in supplying drinking water in Ardabil city, the necessity of purifying the spring water before entering the Balkhli Chai River is quite evident.
Mahdi Sadeghi; Bay Abotaleb; Naser Bay; Nafiseh Soflaie; Mohammad Hadi Mehdinejad; Morteza Mallah
Abstract
Background & Objective: water, urban, industrial and agricultural centers are usually held near rivers. Surface water sources over other sources of water pollution are more at risk. The goal of this study was to evaluate the quality of the Zaringol River and the impact of agricultural drainage water ...
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Background & Objective: water, urban, industrial and agricultural centers are usually held near rivers. Surface water sources over other sources of water pollution are more at risk. The goal of this study was to evaluate the quality of the Zaringol River and the impact of agricultural drainage water was designed and implemented. Materials & Methods: In regard to agricultural activity around the Zaringol river stations studied and the samples from agricultural drainage water and streams in summer and autumn period specified were taken. NSF WQI index parameters including 9 parameter dissolved oxygen, fecal coliform, pH, BOD, temperature, phosphate, nitrate, turbidity, total dissolved solids, which were measured by using standard methods. Results: The results from the study showed that the index based on NSF WQI for all stations were between 54 to 61. Agricultural water drainage WQI index is between 45-37 that according to the index is poor quality. Conclusion: According to the NSF WQI index indicated that water quality in the river is moderate. But agricultural drainage water quality is bad and affects the quality of river water. Due to the relatively high levels of water quality in the middle class of nutrients, especially nitrates, coliform presence of E.coli that drainage water from agricultural and recreational activities in the upstream station is monitored.