Preparation of modified ceramic filter using deposit method and study on adsorption of ammonia nitrogen and COD

This paper is focused on the preparation of ceramic filter coated iron and ceramic filter coated aluminum by using Fe(OH)3 and Al(OH)3 as a modifier and controlling surface chemical deposition time,reaction temperature and pH conditions,and the COD and highlights the capacity of static removal of ammonia nitrogen.The study suggests that the modified ceramic exhibits significantly improved adsorption capacity of COD and ammonia and the ceramics filter coated aluminum gives the ammonia removal capacity 3 times as much as ceramics;the ceramics filter coated iron offers the ammonia removal capacity 5.5 times as much as the ceramics;ceramics filter coated iron and aluminum shows the COD removal capacity 2 times and 2.8 times as much as the ceramics.Modified ceramics displays increased pH.The SEM analysis reveals that deposit method allows the surface area and surface roughness of ceramics to be increased effectively,a wealth of hydroxy functional groups to be produced,and the chemical and physical adsorption capacity to be strengthened.