Development and application of hydrophilic filler modified with concrete

A novel filler is developed through making concrete adhere to the surface of plastic filler,which is proved to be hydrophilic.The advantages of the new hydrophilic filler in landfill leachate treatment by anaerobic suspending media beds are shown compared with the plastic filler.When the COD mass concentration of influent leaehate is 5 000-6 000 mg/L,the average COD removal efficiency with the novel filler is 30%,which is 5%-10% higher than that treated by the plastic filler.