WATER TREATMENT APPARATUS HAVING SELF-CLEANING FUNCTION, AND METHOD FOR SELF-CLEANING OF WATER TREATMENT APPARATUS

A water treatment apparatus having a self-cleaning function and a method for self-cleaning of the water treatment apparatus are provided to remove waste materials from the filter by cleaning a filter while continuously operating the water treatment apparatus, and solve various problems such as reduction of filter life, increase of chemical cost and generation of environmental pollution, which are generated due to use of the chemicals, by cleaning the filter without using chemicals. A water treatment apparatus(1) having a self-cleaning function comprises: a raw water supply pipe(2) for supplying raw water to be treated; a water treating member(4) having a filter(3) for filtering waste materials contained in raw water supplied by the raw water supply pipe; a treated water pipe(5) for transferring treated water that has been treated by the water treating member; a concentrate discharge pipe(6) for discharging concentrate containing waste materials that could not pass through the filter of the water treating member; a first flow control member(10) installed on the concentrate discharge pipe to cause a shock wave to be generated in raw water that will pass through the filter within the water treating member by controlling the amount of concentrate discharged from the water treating member; and a second flow control member installed on the raw water supply pipe to cause a shock wave to be generated in raw water that will pass through the filter within the water treating member by controlling the amount of raw water supplied to the water treating member.