Journal of Ecology and Rural Environment ›› 2010, Vol. 26 ›› Issue (1): 68-72.doi:
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LI Ming, ZHOU Qiao-hong,WU Jun-mei,WANG Rong ,WU Zhen-bin
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Abstract: In order to study effect of fillings on removal of indicator bacteria ( heterotrophic bacteria, coliforms group, fecal strep tococcus) , zeolite, anthracite, shale, vermiculite, ceramic filtermedia, gravel, blast furnace steel slag and bioceramic were chosen as fillings in columns of simulated wetland in a wastewater treatment experiment. Results show that anthracite and steel slagwere the highest in bacteria-removing efficiency, being 95,9% and 99,9% respectively, probably because the effluent from the two columnswas acidic and alkaline, respectively. Vermiculite and zeolite came next, while ceramic filtermedia and bio-ceramic followed in the rear. Correlation analysis revealed negative correlation existed between indicator bacteria removing efficiency and permeability of the six different fillings ( except steel slag and anthracite) , suggesting that filtration absorp tion is the mechanism of the fillings removing indicator bacteria,
Key words: simulated wetland, removal efficiency, filling, indicator bacteria
CLC Number:
X52
LI Ming, ZHOU Qiao-Hong, WU Jun-Mei, WANG Rong, WU Zhen-Bin. Effect of Fillings on Removal of Indicator Bacteria From Column of Simulated Wetland[J]. Journal of Ecology and Rural Environment, 2010, 26(1): 68-72.
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