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Application of Water Quality Index and Water Quality Model QUAL2K for Evaluation of Pollutants in Dez River, Iran

  • HYDROCHEMISTRY, HYDROBIOLOGY: ENVIRONMENTAL ASPECTS
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Abstract

Dez River in Iran is a long river and has generally good-quality water. Unfortunately, in this river water quality has decreased over recent years due to drought, industrial and agricultural developments. Dez River plays a significant role in moderating the quality of Karun River After adjoining it. So, maintaining good water quality of Dez River is very important. In this case study, water quality index was evaluated in an 8-year period with regard to the growth of industry and drought occurrence. The calculated Iran Water Quality Index showed values of 70.1–85. This index reduced from extremely good to good for DEZ River. Simulation of some water quality parameters (electrical conductivity, dissolved oxygen, carbonaceous biochemical oxygen demand, NH4-N, NO3-N, and pH) were evaluated using Water Quality Model (Qual2k). The observed data in July 2012 and March 2013 were used for calibration and validation of the Qual2k model respectively. In conclusion, the Qual2k model was proposed as a suitable tool for water quality assessment and forecast in the future.

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ACKNOWLEDGMENTS

The present study was supported by KWPA. Special thanks to Dr. Mojtaba Rafiee and Dr. Soroosh Alahdin for their efforts and guidance in this project.

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Authors and Affiliations

  1. Department of Water Engineering, Science and Research Branch, Islamic Azad University, 1477893855, Tehran, Iran

    Samaneh Abdeveis, Hossein Sedghi & Hossein Babazadeh

  2. Department of Civil Engineering, Islamic Azad University, 6451741117, Shoshtar, Iran

    Houshang Hassonizadeh

Authors
  1. Samaneh Abdeveis
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  2. Hossein Sedghi
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  3. Houshang Hassonizadeh
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  4. Hossein Babazadeh
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Correspondence to Samaneh Abdeveis, Hossein Sedghi, Houshang Hassonizadeh or Hossein Babazadeh.

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Samaneh Abdeveis, Sedghi, H., Hassonizadeh, H. et al. Application of Water Quality Index and Water Quality Model QUAL2K for Evaluation of Pollutants in Dez River, Iran. Water Resour 47, 892–903 (2020). https://doi.org/10.1134/S0097807820050188

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