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DOI Prefix 10.20431 |
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Decreasing the Number of Coliforms of Wastewater Treatment Plants using Sand Filtration Together with Four-Seed Powder
Kaveh Ostad-Ali-Askari1*, Saeid Eslamian2, Vijay P. Singh3, Nicolas R. Dalezios4, Mohsen Ghane5, Hossein Gholami6, Shahide Dehghan7, Majedeh Haeri-Hamedani8
2,8.Department of Water Engineering, College of Agriculture, Isfahan University of Technology, Isfahan, Iran.
3.Department of Biological and Agricultural Engineering & Zachry Department of Civil Engineering, Texas A and M University, 321 Scoates Hall, 2117 TAMU, College Station, Texas 77843-2117, U.S.A.
4.Laboratory of Hydrology, Department of Civil Engineering, University of Thessaly, Volos, Greece & Department of Natural Resources Development and Agricultural Engineering, Agricultural University of Athens, Athens, Greece.
5.Civil Engineering Department, South Tehran Branch, Islamic Azad University, Tehran, Iran.
7.Department of Geography, Najafabad Branch, Islamic Azad University, Najafabad, Iran.
Citation : Kaveh Ostad-Ali-Askari, et.al., Decreasing the Number of Coliforms of Wastewater Treatment Plants using Sand Filtration Together with Four-Seed Powder International Journal of Research Studies in Agricultural Sciences 2019, 5(3) : 36-40.
Lacking adequate supervision on quality of state wastewater treatment plants causes these materials to enter the environment raw and in most cases with no consolidation and cause lots of losses to the natural environment.
Samples were prepared in plastic cylinders with nearly 14 cm diameter and 50 cm height. Silica sand was poured into cylinders in three layers, bottom to up and tiny to coarse. Aligoudarz wastewater treatment plant was used for irrigation of lysimeters. On one hand, the operation of four-seed powder together with silica sand was remarkable in decreasing the number of coliforms. And removal efficiency for total coliforms and fecal coliforms were 98% and 99%, respectively. Using this method in refining urban wastewater can increase wastewater microbial quality to the high degree and can be used in agricultural land, feeding underground water resources, entering surface water, green space irrigation and using in car washes and etc.