3RD INTERNATIONAL CONGRESS ON TECHNOLOGY - ENGINEERING & SCIENCE - Kuala Lumpur - Malaysia (2017-02-09)

Comparison Of Biological Wastewater Treatment Ability Of Biological Filter Media Made From Biomass Ash

Sustainable wastewater treatment is getting more attention now-a-days worldwide. Researchers have been looking for cost effective and environment friendly technologies at the same time. In fish wastewater, nitrogen discharge limit is very high because of the regular fish-food leftover and wastes from fish. In this study different shape of biological filters were used to host and grow nitrifying bacteria. Therefore, the objective of this study aimed to find the most effective alternative biofilters comparing to the conventional biofilters available in the market. The media made from coal bottom and rice husk ashes are tested and compared their effectiveness with available used media in terms of removal of nitrogen compounds. The results showed that media made from biomass ashes brought a relative superiority in terms of nitrogen compound removal at the conditions of water temperature ranging from 26 0C to 28 0C and DO >4.00 mg L-1 and the toxic nitrogen wastes are removed within 16 days. In addition, the surfaces of the media were examined by scanning electron microscope which showed that these media were suitable to attached growth of nitrobacteria for improving nitrification performance. Moreover, these biofilters application in biological treatment provided an auspicious way in biomass ash waste utilization.
Tahmina Sultana, Penjit Srinophakun, Umaporn Sanewirush, Pakamard Saewong