| 摘要 |
PURPOSE:To efficiently remove harmful substances by carrying out solid-liquid separation for wastewater containing a large amount of organic substances, and then introducing the filtered liquid of the wastewater into a polymerizing apparatus, mixing the filtered liquid with ozone, and then carrying out oxidoreduction reaction in a reaction tank. CONSTITUTION:After wastewater from a water tank 1 is separated into solid matter and a separated liquid by solid-liquid separating apparatuses 3, 6, the solid matter is dehydrated by a dehydrator 8 and then converted into a fertilizer or used for reclamation. The filtered liquid is sent to a polymerizing apparatus via a filtered liquid storage tank 11, and while bubbles being generated by air sent from an air compressor 13 and a forced draft fan 14, an oxidizing agent, a neutralizing agent, a flocculating agent are added to carry out flocculation and flock formation. The produced flocks are coagulated and precipitated in a coagulating and precipitation tank 15, the obtained treated water is introduced into a reaction tank 17, sprayed in superfine particle state, and irradiated with ultraviolet rays 36 to oxidoreduce suspended substances and malodorous components for removing them. Further, the remaining suspended substances and malodorous substances are catalytically reacted with sodium hypochlorite or ozone in a catalytic oxidization tower 19 to be removed. |
