7Ogalla F, Sibony J. Biocarbone aerated filter ten yearsafer past, presentand plenty of potential [J]. Water Sci Technol,1992,26(9/11): 97 - 101.
8Amar D, Portos J. The use of an upflow fixed bed reactor for treatment of a primary settled domestic sewage [ J]. Water Res, 1986, 20(1): 9 - 14.
9Polanca D Z F, Mendez E. Spatial distribution of betertrophs and nitrifie in a submerged biofilter for nitrification [J]. Water Res, 2000,43(16):4081 - 4089.
10Upton, B Green. A Successful Strategy for Small Treatment Plants. Water Quality International, 1995.
