The present invention relates to a natural organic material removal device for water purification treatment using carbon dioxide to efficiently remove the natural organic matter contained in the raw water by supplying carbon dioxide to the raw water collected in the water well during the treatment.;The apparatus of the present invention includes a carbon dioxide storage tank 12 to which a refrigeration compressor 11 and a vaporizer 13 are connected, a heater 14 for vaporizing liquid carbon dioxide, and a regulator for supplying vaporized carbon dioxide at a constant pressure. 16), a carbon dioxide injector 15 equipped with a flow meter, a pH meter 18, and a diffuser 17 soaked in raw water, and a diffuser 17 is installed at the bottom of the landing pool where the raw water is collected. Carbon dioxide is supplied to the raw water before the purification.;The device of the present invention significantly reduces the amount of flocculant to remove natural organic substances contained in raw water and the amount of disinfection by-products generated by chlorine sterilization, thereby improving the stability of the water treatment process, and adding lime to reduce pipe corrosion. There is an advantage to reduce the usage of.
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