3Andreottola G, Foladori P, Gatti G, Nardelli P, Pettena M,Ragazzi M. Upgrading of a Small Overloaded Activated Sludge Plant Using a MBBR System[J]. Journal of Environmental Science and Health-Part A Toxic/Hazardous Substances and Environmental Engineering, 2003, 38 ( 10 ) :2 317-2 328.
6Morper A M, Wildmoser A. Improvement of Existing Wasteveater Treatment Plants' s Efficiencies Without Enlargement of Tankage by Application of the Linpor-Process-Case Studies[J].Wat. Sci. Tech., 1990,22(7-8) :207-215.
7Martienssen M. Simultaneous Catalytic Detoxification and Biodegradation of Organic Peroxides During the Biofilm Process [J]. Water Research, 2000, 34 (16):3 917-3 926.
8Meander U, Henrysson T, Welander T. Biological Nitrogen Removal From Municipal Landfill Leachate in A Pilot Scale Suspended Carrier Biofilm Process [ J ]. Water Research,1998,32(5) : 1 564- 1 570.