Theory And Designing Of Biological Aerated Filter Technology

This paper is according to the trend that the haldled wastewater should be reused. The fact of both domestic and international wastewater reuse is also analyzed. Then, Biological Aerated Filter Technology is analyzed systematically from theories to engineering designings. Main result as follows:1. The main channel of wastewater reuse is to use as cooling tower make-up water for power plant operations. The primary reuse technology cotain traditional technique, live carbon attaching method, ozone oxidizing method, separation tuchnique, land filtration and aerated pond.2. Biological Aerated Filter is a kind of stable and efficient technology because of its mang advantages such as small body and less land, better effluent quality, easy treatment process, less consruction and working fee, easy managing and interuppting working form. The better construction of BAF is top flow BAF.3. The main process of C/N top flow BAF and N top flow BAF is used for treatment of 40000m3/d municipal wastewater in X city and the water quality can be the first class of the Drainage Standard. The handled water can be totally reued as cooling tower make-up water for power plant operations.