Study on property of biofilms on diffrent carriers in treating gelatin wastewater by photosynthetic bacteria (PSB)
- Received Date: 09/12/2009
- Accepted Date: 14/10/2009
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Key words:
- phosphorite water /
- photosynthetic bacteria /
- carrier
Abstract: The effect of treating phosphorite water genarated in gelatin production by photosynthetic bacteria was investigated. Photosynthetic bacteria was carried in fiber carrier and brush carrier, respectively.The method used was culturing membrane by the advantageous strain.Considering the membrane culturing time，removal rate of COD and the ultimate concentration of TP, the effect of using brush carrier was better than fiber carrier.And for the former, the membrane culturing time was 23 days,the removal rate of COD and the ultimate concentration of TP were 93% and 2.8 mg/L,respectively.The brush filler was more applicable to phosphorite water treatment. Acording to the SEM results,the surface of brush filler was rough before membrane culturing and scaly after membrane culturing.No apparent chang was found for fiber filler both before and after membrane culturing ,and its surface was very smooth.This indicated that rough surface was more easier to attach for photosynthetic bacteria,which influences the effect of biofilm. The concentration of Ca2+ and pH value of wastewater were two dominant factors that infuence the effect of membrane culturing in filler.
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