Therefore, the turbidity removal efficiency is higher for filler with a small particle size and irregular shape (Lu et al., 2016 and Chou et al., 2009).
Steel slag, maifanite and bamboo charcoal have a small particle size and irregular shape,
while maifanite and bamboo charcoal materials are softer and easier to adsorb pollutants;
therefore, their turbidity removal efficiencies are better.When HRT
reaches 5 days, the average effluent turbidity concentrations for all four substrates reach 16.4 NTU, 26.3 NTU, 11.5 NTU and 13.3 NTU respectively.
Therefore, the turbidity removal efficiency is higher for filler with a small particle size and irregular shape (Lu et al., 2016 and Chou et al., 2009). Steel slag, maifanite and bamboo charcoal have a small particle size and irregular shape, while maifanite and bamboo charcoal materials are softer and easier to adsorb pollutants;therefore, their turbidity removal efficiencies are better.When HRTreaches 5 days, the average effluent turbidity concentrations for all four substrates reach 16.4 NTU, 26.3 NTU, 11.5 NTU and 13.3 NTU respectively.
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