| 摘要 |
The present invention relates to a filtration device with a biological filtering function and, more specifically, to a filtration device with biological filtering function in which a physical filtration unit, a biological filtration unit and a back-filtration unit are formed in a multi-layer, therefore fresh water flowing from a water tank gradually passes through to the lower layer from the top layer to enable sludge separation and ammonia removal. In the biological filtering unit, by improving inhabited environment of microorganisms, plentiful microorganisms can inhabit, thereby maximizing separation efficiency of ammonia. In the back-filtration unit, fine sludge contained in the fresh water is finally removed so as to supply the filtered fresh water to the water tank. |
