Abstract
Laboratory experiments for the kinetics of periphyton growth were conducted to find out the effect of hydraulic characteristics on the production and the detachment of periphyton, in which the amount of periphyton and the rate of detachment were measured. The results of the experiments show that the growth rate of periphyton becomes large in the case turbulence near the channel bed becomes large. It was also found that the detachment of periphyton mainly depends on the physiological action of periphyton.A numerical simulation model of the growth of periphyton was presented to describe the production and detachment in details. The result of the calculation shows that the biomass of the filament type periphyton is mainly determined by the balance between production rate and respiration rate.
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