| Abstract |
| In the deposition amount of the biofilm using peanut shaped porous revetment block, formed by microorganisms, to try increasing the self-purification of river. And experiment has compared the ability of the biological self-purification of the activated carbon coated revetment block(ACRB) and existing revetment block(RB). Two reactors of pilot plant were used in this experiment and the comparative study ACRB and existing RB without activated carbon was applied to plant of cycle type-stream. The influent used synthetic water mixing secondary effluent of wastewater treatment plants and stream water. Experiments were operated by separating (Mode1, 2, 3) at low concentrations, middle concentration, high concentration. According to the experiment, biofilm are formed thicker at the Mode 3 substrate concentration of the influent. Result of analysis, the water quality by the removal rate of microorganisms per substrate, is very effective for the removal of BOD, the substrate removal rate of the ACRB is higher than the RB. As a result, ACRB was found that it is possible to improve substrate removal capability friendly environment using microorganisms, to improve the ability of self-purification of river than the RB. |
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| Key Words |
| Activated carbon, Revetment blocks, Biofilm, Self-Purification, Stream Water |
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