New Medias in Multi – Layer Filters and Comparing their Performance with Conventional Multi – Layer Filter

Subject Areas : environmental management

Mostafa  Khezri ¹ (Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University*(Corresponding Authors).)
Farima  Roshan Abkenar ² (MSc Student of Environmental Engineering-Water Source, College of Environment and Energy, Science and Research Branch, Islamic Azad University.)

Received: 2014-12-19 Accepted : 2016-04-20 Published : 2019-08-23

Keywords: dual media beds, Comparative performance of dua, Anthracite, Granite, Basalt,

Abstract :

Background and Objective: In order to purify drinking water, we usually use different water treatment units which one of them is filtration. Today multi media and specially two media filtration one usual units in developed countries but unfortunately in Iran we still use the single media filtration. In order to develop these types of media in Iran we perforemed this research. The purpose of this study is to investigate new media from waste material for alternative use in Sand – Anthracite media beds. Method: This study is the results from one of the experiential research in pilot scale. All of the experiments were done according to AWWA B 100 standard method and also different parameters including turbidity, running time were considered. Findings: Results showed average turbidity removal efficiency of three media Sand – Anthracite, Basalt – Anthracite, Granite – Anthracite are 91.4, 92.1, 92.9 respectively and best height of two media beds is 85 cm, and maximum running time belongs to Granite – Anthracite bed. Discussion and Conclusion: Performance of Basalt material is very similar to Sand from hardness and solubility in acid points. So we suggest that waste Granite and Basalt are very good substitution for sand in water treatment industries.  

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