WASTEWATER TREATMENT METHOD AND WASTEWATER TREATMENT APPARATUS USED THEREFOR

• Main Author: KIMURA SATOYUKI
• Format: Patent
• Language: English; Japanese
• Published: 26.11.2020
• Subjects: CHEMISTRY; METALLURGY; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

To provide a wastewater treatment apparatus capable of accelerating discharge of ozone bubbles in a liquid to be treated, facilitating gas-liquid separation, and reusing the liquid as purified water.SOLUTION: A wastewater treatment apparatus includes a process of supplying ozone gas into a liquid to be treated in a first treatment tank 12, a process of letting the liquid to be treated pass through a lower opening A1 of a partition plate A and into a second treatment tank 13, a process of letting the liquid to be treated climb over an upper end B1 of a partition plate B provided in the second treatment tank and fall through an auxiliary plate 13a provided opposite the partition plate B, a process of changing a flow of the liquid to be treated to the direction of a partition plate C by a water flow change plate 13b installed below the auxiliary plate, a process of letting the flow of the liquid to be treated pass through a lower opening C1 of the partition plate C and come into contact with a slope plate 14a provided in a third treatment tank 14 to raise it, and a process of separating the ozone bubbles contained in the liquid to be treated and discharging from the top of the third treatment tank to an exhaust gas storage tank 20, and the treated liquid from which the ozone bubbles have been separated can be discharged from the third treatment tank and reused as purified water.SELECTED DRAWING: Figure 1 【課題】被処理液に含まれるオゾン気泡の排出を促進させ、気液分離を容易にし、浄水として再利用する廃液処理装置の提供。【解決手段】第１処理槽１２の被処理液にオゾンガスを投入する工程と、被処理液を仕切板Ａの下方開口部Ａ１を通過させて第２処理槽１３に移行させる工程と、被処理液を第２処理槽に設けた仕切板Ｂの上端部Ｂ１を乗り越えさせて仕切板Ｂに対向させて設けられ補助板１３ａを伝わらせて落下させる工程と、被処理液の流れを補助板の下方に設置した水流変更板１３ｂによって仕切板Ｃ方向に変える工程と、被処理液の流れを仕切板Ｃの下方開口部Ｃ１を通過させて第３処理槽１４に設けられた傾斜板１４ａに当接させて上昇させる工程と、被処理液に含有されたオゾン気泡を分離して第３処理槽の上方から排出ガス貯留槽２０に排出する工程と、を備え、オゾン気泡が分離された被処理液を第３処理槽から排出して浄水として再利用できる排水処理装置。【選択図】図１