| In order to improve and develop water treatment technique for drinking water, based on the ozone-biological activated carbon (O3-BAC), by using activated carbon fiber(ACF) as supportor for the immobilization of microbes, a new generation of biological carbon water treatment technique, ozone-biological activated carbon fiber (O3-BACF) was developed. Its performance was studied through treatment of slightly polluted water and synthetic phonolic wastewater.Bacterial strains obtained from the river in the campus of Tongji University were cultivated, domestigated, separated and fixed on carbon support. Two strains obtained from the slightly polluted water by screening and acclimatizing were identified as Bacillus and Pseudomonas putida. Five strains observed in the BACF column were Mitrifying bacteria, Bacillus and Aericolous mycelium, identified as Pseudomonas putida and Comamonas testosteroni.The biological compatibility and pore structure of four ACFs as support material were studied. It was found that microbial immobilization was influnced by BET surface area, pore size and distribution of pore size, especially pore volumn and area of mesopore. The biomass and species of microbe formed on the ACFs increased with increasing process time. It demonstrated that ACF materials have good biological compatibility, indeed could form BACF effectively.The BACF water treatment technique was then tested to remove NH3-N, NO2-N and UV254 organic pollutants from slightly polluted water. The removal of NH3-N, NO2-N and UV254 organics could be over 90%. The mechanism of pollutants removal by BACF was studied. In the beginning of the treatment, the adsorption of ACF played a dominant role. As increasing time, a synergistic effect of ACF's adsorption and microbe's biodegradation took place, resulting in an increase in removal efficiency and service life of BACF. The influence of pH, temperature, and flow rate and substrate concentration on the removal was investigated, thereby the optimal...
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