Received date: 2001-11-25
Online published: 2010-10-01
Biological Aerated Filter (BAF) is arecently developed process to treat organic waste water. The working principle of BAF (up flow and down flow) is presented. Compared with traditional activated sludge system, the main advantages of BAF has stronger treating capacity, better treating effect, less relationship with temperature, higher capacity for absorbing shock load, no requirement for secondary settlement tank, simpler technology flow and more reasonable bacterium structure. The characteristic and application of typical BAF process, at home and abroad, are analysed. What's more, the key technique of BAF about the removal of P and N and its pre-treatment are discussed. BAF process has prosperous future in our country.
Key words： biological aerated filter; removel of P and N; pre-treatment; back flow
XU Yaming, JIANG Bin . Working principle and technology of biological aerated filter[J]. Industrial Water Treatment, 2002 , 22(6) : 1 -5 . DOI: 10.11894/1005-829x.2002.22(6).1
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