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To investigate the possibility of the rapidly starting of the SBR reactor, the start-up effect of aerobic granular sludge cultivated with and without nuclei were compared at low temperature. In the reactor which added aerobic denitrification biofilm debris as nuclei, aerobic granular formed after 30 days of operation at 20°C, the average diameter of granular achieved 7.8mm, MLSS was above 12.275g/L,...
Immobilized microorganism technology is an effective method of removing water pollutant in source waters. The effect of biologically immobilized ceramic particles is better in removing the pollutant than simple filter or engineering bacteria liquid, due to the two factors including the adsorption and entrapment function of the filter materials in the biofilter and the biodegradation of the microorganisms...
In order to reveal the molecular mechanisms and the metabolic pathway of producing bioflocculant, the changes in protein complexes of F2 grown in minimal media versus bioflocculant media and those of F6 grown in minimal media versus bioflocculant media were respectively researched by SDS-PAGE. SDS-PAGE results indicated that the relative band volumes of three bands were obviously decreased in F2,...
The strain F2 which produce excellent flocculating substance were isolated from soil samples and identified as Rhizobium radiobacter. The isolates F2 produced the flocculating substance during the late logarithmic growth phase and the early stationary growth phase. It was founded that the flocculation activated substances of BF distributed mainly in upper phase and were mainly composed of polysaccharide...
Nitrification and denitrification were commonly used in the recirculating aquaculture system (RAS) to decrease the ammonia and nitrate concentration. The variation characteristics of nitrogenous compounds and microbiology in a closed RAS were studied with gradually increasing ammonia-nitrogen (NH4+-N) concentration. The NH4+-N was completely converted into nitrite nitrogen (NO2--N) in 46 days,...
Two strains (designated F2, F6) which produce excellent flocculating substance were isolated from soil samples and identified as Rhizobium radiobacter and Bacillus sphaeicus. The compound bioflocculant (CBF) with higher flocculating activity was obtained by coculturing F2 and F6. The isolates F2 and F6 produced the flocculating substance during the late logarithmic growth phase and the early stationary...
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