JP6291527B2 - Circulating water treatment equipment - Google Patents
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- JP6291527B2 JP6291527B2 JP2016128724A JP2016128724A JP6291527B2 JP 6291527 B2 JP6291527 B2 JP 6291527B2 JP 2016128724 A JP2016128724 A JP 2016128724A JP 2016128724 A JP2016128724 A JP 2016128724A JP 6291527 B2 JP6291527 B2 JP 6291527B2
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Landscapes
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Treatment Of Sludge (AREA)
- Filtration Of Liquid (AREA)
Description
本発明は、貯水場所に貯水されている被処理水をろ過装置を用いて浄化する循環型水処理装置に関するものである。 The present invention relates to a circulation type water treatment device that purifies treated water stored in a water storage place using a filtration device.
湖、沼、池などの貯水場所の水質をろ過装置によって浄化することが行われている。このようなろ過装置の一例が、特許文献１に記載されている。 The water quality of reservoirs such as lakes, swamps, and ponds is purified with a filtration device. An example of such a filtration device is described in Patent Document 1.
特許文献１に記載されたろ過装置（濾過タンク）では、被処理水は上方の給水口から取り入れられて、ろ過材（濾過層）を通過することで浄化された後に、下方の送水口から湖沼等に戻される。ろ過工程の最後には、ろ過材に溜まった残渣を除去すると共にろ過材を復活させる目的で、逆に送水口から貯水場所の水を取り入れてろ過材を洗浄し、吸水口から外部排出する逆洗（逆流洗浄）が行われている。 In the filtration device (filtration tank) described in Patent Document 1, the water to be treated is taken in from the upper water supply port and purified by passing through the filter medium (filter layer), and then the lake from the lower water supply port. And so on. At the end of the filtration process, in order to remove the residue accumulated in the filter medium and restore the filter medium, the filter medium is washed by taking water from the water storage port, and then drained from the water intake port. Washing (backflow washing) is performed.
ろ過装置から逆洗により外部排出される逆洗排水は、河川に放流されている場合がある。この場合、河川を汚してしまう。又、逆洗排水を外部排出させる適当な場所が無い場合もある。 Backwash wastewater discharged from the filter device by backwashing may be discharged into the river. In this case, the river is soiled. In some cases, there is no suitable place to discharge the backwash waste water to the outside.
本発明は前記の課題を解決するためになされたもので、ろ過装置の逆洗排水を外部の河川等に排出することなく、貯水場所の被処理水を浄化することができる循環型水処理装置を提供することを目的とする。 The present invention has been made in order to solve the above-mentioned problems, and is a circulation type water treatment device that can purify the water to be treated in the water storage place without discharging the backwash waste water of the filtration device to an external river or the like. The purpose is to provide.
前記の目的を達成するためになされた、特許請求の範囲の請求項１に記載された循環型水処理装置は、貯水場所に貯水されている被処理水を吸水する循環ポンプと、前記循環ポンプの吸水した前記被処理水をろ過材に通して浄化するろ過装置と、前記ろ過装置を通して浄化された第１の処理水を促進酸化処理して、水中の汚染物を酸化分解して浄化する促進酸化処理装置とを備え、前記促進酸化処理装置を通して浄化された第２の処理水を前記貯水場所に戻す循環型水処理装置であって、前記促進酸化処理装置は、前記第１の処理水に、オゾンの混合、紫外線の照射、及び光触媒作用を施すことで前記促進酸化処理するものであり、前記ろ過装置は、前記循環ポンプの吸水した前記被処理水によって前記ろ過材を逆洗するための逆洗手段を有しており、前記ろ過装置には、逆洗に用いられた排水をそのまま前記貯水場所に戻すための排水路が接続されていることを特徴とする。 In order to achieve the above object, a circulating water treatment apparatus according to claim 1 is a circulation pump that absorbs treated water stored in a storage place, and the circulation pump. A filtration device that purifies the treated water that has been absorbed by the filter through a filter medium, and a first treatment water that is purified through the filtration device, promotes oxidation treatment, and promotes oxidative decomposition and purification of contaminants in the water. A circulating water treatment device that returns the second treated water purified through the accelerated oxidation treatment device to the water storage place, wherein the accelerated oxidation treatment device converts the first treated water into the first treated water. The accelerated oxidation treatment is performed by applying ozone mixing, ultraviolet irradiation, and photocatalysis, and the filtration device backwashes the filter medium with the treated water absorbed by the circulation pump. Has backwashing means And has the the filtration device is characterized in that the drainage channel for returning the waste water used for backwash intact the water storage location is connected.
この発明によれば、ろ過装置と促進酸化処理装置とを組み合わせて用いることにより、被処理水中の汚染物質が除去されていくため、逆洗排水を貯水場所に戻しても、被処理水を浄化することができる。 According to this invention, since the contaminants in the water to be treated are removed by using the filtration device and the accelerated oxidation treatment device in combination, the water to be treated is purified even if the backwash wastewater is returned to the storage place. can do.
この発明によれば、オゾン、紫外線、及び光触媒を組み合わせて用いることにより、ヒドロキシラジカル（・ＯＨ）などの強力な酸化力を持つ活性ラジカル種を多量に発生させることができるため、第１の処理水中の有機物等を効率的に分解除去することができる。 According to the present invention, a combination of ozone, ultraviolet light, and a photocatalyst can generate a large amount of active radical species having a strong oxidizing power such as hydroxy radical (.OH). It is possible to efficiently decompose and remove organic substances in water.
請求項２に記載の循環型水処理装置は、請求項１に記載のものであり、前記ろ過装置を通して浄化された前記第１の処理水の一部を、前記促進酸化処理装置をバイパスさせて前記貯水場所に戻すためのバイパス路を備えることを特徴とする。 The circulation type water treatment device according to claim 2 is the one according to claim 1 , wherein a part of the first treated water purified through the filtration device is bypassed from the accelerated oxidation treatment device. A bypass path for returning to the water storage place is provided.
この発明によれば、バイパス路を備えたことにより、促進酸化処理装置の処理可能水量を超えた分の第１の処理水をバイパス路に流すことができるので、促進酸化処理装置は処理可能水量の範囲内で処理することができる。 According to the present invention, the provision of the bypass passage allows the first treated water in excess of the treatable water amount of the accelerated oxidation treatment apparatus to flow through the bypass passage. Can be processed within the range.
請求項３に記載の循環型水処理装置は、請求項１又は２に記載のものであり、前記バイパス路を通る前記第１の処理水の流量を調整可能な調整弁を備えることを特徴とする。 Recycling water treatment device according to claim 3 are those according to claim 1 or 2, and characterized in that it comprises an adjustable control valve for flow rate of the first treated water passing through the bypass passage To do.
この発明によれば、調整弁を備えたことにより、第１の処理水の水量が増減したとしても、促進酸化処理装置が処理可能水量の範囲内で処理することができる。 According to this invention, even if the amount of the first treated water increases or decreases due to the provision of the adjustment valve, the accelerated oxidation treatment apparatus can perform the treatment within the range of the treatable amount of water.
本発明の循環型水処理装置によれば、ろ過装置の逆洗排水を外部の河川等に排出することなく、貯水場所の被処理水を浄化することができる。 According to the circulation type water treatment device of the present invention, it is possible to purify the water to be treated in the water storage place without discharging the backwash waste water of the filtration device to an external river or the like.
以下、本発明を実施するための形態を詳細に説明するが、本発明の範囲はこれらの形態に限定されるものではない。 Hereinafter, although the form for implementing this invention is demonstrated in detail, the scope of the present invention is not limited to these forms.
図１に、本発明を適用する循環型水処理装置１の使用状態を図示する。 FIG. 1 illustrates a use state of a circulating water treatment apparatus 1 to which the present invention is applied.
循環型水処理装置１は、循環ポンプ２、ろ過装置４、促進酸化処理装置７、及び制御部８を備え、貯水場所９１に貯水されている被処理水９２を浄化するよう構成されている。貯水場所９１は、一例として、池、沼、湖、釣り堀、プール、又は浴槽である。 The circulation type water treatment device 1 includes a circulation pump 2, a filtration device 4, an accelerated oxidation treatment device 7, and a control unit 8, and is configured to purify treated water 92 stored in a water storage location 91. The water storage location 91 is, for example, a pond, a swamp, a lake, a fishing pond, a pool, or a bathtub.
循環ポンプ２は、貯水場所９１に貯水されている被処理水９２を吸水するものである。循環ポンプ２の吸水口側には、貯水場所９１に繋がる配管２１が接続され、循環ポンプ２の吐出口側には、ろ過装置４に繋がる配管２２が接続されている。配管２１の途中に、枯れ葉などの被処理水９２中の比較的大きなごみを取り除くためのストレーナ（図示せず）が設けられていてもよい。 The circulation pump 2 absorbs the water to be treated 92 stored in the water storage place 91. A pipe 21 connected to the water storage place 91 is connected to the water suction port side of the circulation pump 2, and a pipe 22 connected to the filtration device 4 is connected to the discharge port side of the circulation pump 2. A strainer (not shown) may be provided in the middle of the pipe 21 to remove relatively large dust in the treated water 92 such as dead leaves.
ろ過装置４は、ろ過器５、及び五方切換弁３を備えている。ろ過器５は、外形がタンク形状に形成されたものである。ろ過器５の内部には、ろ過材６が配置されている。 The filtration device 4 includes a filter 5 and a five-way switching valve 3. The filter 5 has an outer shape formed in a tank shape. A filter medium 6 is disposed inside the filter 5.
ろ過装置４は、循環ポンプ２の吸水した被処理水９２をろ過材６に通して浄化するものである。ろ過装置４は、循環ポンプ２の吸水した被処理水９２によってろ過材６を逆洗するための逆洗手段になる五方切換弁３を有している。ろ過装置４には、逆洗に用いられた排水を貯水場所９１に戻すための排水路になる配管３１が接続されている。 The filtration device 4 purifies the treated water 92 absorbed by the circulation pump 2 through the filter medium 6. The filtration device 4 has a five-way switching valve 3 that serves as backwashing means for backwashing the filter medium 6 with the treated water 92 absorbed by the circulation pump 2. The filtration device 4 is connected to a pipe 31 serving as a drainage channel for returning the drainage used for backwashing to the water storage place 91.
ろ過器５及びろ過材６として、公知の種々のものを用いることができる。ここでは一例として、ろ過器５として砂ろ過器を用いている。砂ろ過器とは、砂利の層の上に砂の層を敷いたろ過材６を用いるものである。ろ過材６として、無煙炭、セラミック材などの多孔質材が用いられていてもよい。 As the filter 5 and the filter medium 6, various known ones can be used. Here, as an example, a sand filter is used as the filter 5. The sand filter uses a filter medium 6 in which a sand layer is laid on a gravel layer. As the filter medium 6, a porous material such as anthracite or ceramic material may be used.
五方切換弁３は、ろ過器５を通る水の方向、及び、ろ過器５を通った水の排出方向を切換可能に構成されたものである。五方切換弁３は、制御部８によって切換制御が可能に構成されている。五方切換弁３には、配管２２、配管２３、配管２４、配管２５、及び配管３１が接続されている。五方切換弁３とろ過器５の上部の給水口とが配管２３で接続され、五方切換弁３とろ過器５の下部の排水口とが配管２４で接続されている。五方切換弁３に接続された配管２５は、配管２６と配管２８とに枝分かれしている。配管２６の先は、促進酸化処理装置７の給水口６１（図３参照）に接続されている。 The five-way switching valve 3 is configured to be switchable between the direction of water passing through the filter 5 and the direction of discharging water passing through the filter 5. The five-way switching valve 3 is configured to be switchable by the control unit 8. A pipe 22, a pipe 23, a pipe 24, a pipe 25, and a pipe 31 are connected to the five-way switching valve 3. The five-way switching valve 3 and the upper water supply port of the filter 5 are connected by a pipe 23, and the five-way switching valve 3 and the lower drainage port of the filter 5 are connected by a pipe 24. The pipe 25 connected to the five-way switching valve 3 is branched into a pipe 26 and a pipe 28. The tip of the pipe 26 is connected to a water supply port 61 (see FIG. 3) of the accelerated oxidation treatment device 7.
促進酸化処理装置７は、ろ過装置４を通して浄化された第１の処理水９３を促進酸化処理して、水中の汚染物を酸化分解して浄化するものである。促進酸化処理装置７の排水口６２（図３参照）には、配管２７が接続されている。配管２７は、配管２８と合流して配管２９に接続されている。促進酸化処理装置７を通して浄化された第２の処理水９５は配管２７、配管２９を通って貯水場所９１に戻される。 The accelerated oxidation treatment device 7 is a device that promotes and oxidizes the first treated water 93 purified through the filtration device 4 to oxidize and decompose contaminants in the water. A pipe 27 is connected to the drain port 62 (see FIG. 3) of the accelerated oxidation treatment apparatus 7. The pipe 27 joins the pipe 28 and is connected to the pipe 29. The second treated water 95 purified through the accelerated oxidation treatment device 7 is returned to the water storage location 91 through the pipe 27 and the pipe 29.
配管２８は、ろ過装置４を通して浄化された第１の処理水９３の一部を、促進酸化処理装置７をバイパスさせて貯水場所９１に戻すためのバイパス路である。配管２８には、バイパス路を通る第１の処理水９３の流量を調整可能な調整弁１１が設けられていることが好ましい。調整弁１１は、手動で流量を調整可能な手動式調整弁であってもよいし、制御部８の制御で流量を電気的に調整可能な電磁式調整弁であってもよい。 The pipe 28 is a bypass passage for bypassing the accelerated oxidation treatment device 7 and returning the part of the first treated water 93 purified through the filtration device 4 to the water storage location 91. It is preferable that the adjustment valve 11 capable of adjusting the flow rate of the first treated water 93 passing through the bypass path is provided in the pipe 28. The adjustment valve 11 may be a manual adjustment valve that can manually adjust the flow rate, or may be an electromagnetic adjustment valve that can electrically adjust the flow rate under the control of the control unit 8.
制御部８は、循環ポンプ２、五方切換弁３、及び促進酸化処理装置７に接続されており、さらに調整弁１１を接続しても良い。制御部８は、これらの動作を総合的に制御するものである。図示しないが、循環ポンプ２、五方切換弁３、促進酸化処理装置７、及び制御部８さらに調整弁１１が接続される場合には調整弁１１も含め、各々の動作用の電力を供給するための電源が接続されている。 The control unit 8 is connected to the circulation pump 2, the five-way switching valve 3, and the accelerated oxidation treatment device 7, and may further be connected to a regulating valve 11. The control unit 8 comprehensively controls these operations. Although not shown, when the circulation pump 2, the five-way switching valve 3, the accelerating oxidation treatment device 7, the control unit 8, and the regulator valve 11 are connected, power for each operation including the regulator valve 11 is supplied. Power supply for is connected.
図３に、促進酸化処理装置７のブロック図を示す。促進酸化処理装置７は、オゾン生成器４１、高圧電源４５、コンプレッサ４６、エジェクタ４８、及び促進酸化処理器５１を備えている。コンプレッサ４６には空気乾燥機が付加されている。 FIG. 3 shows a block diagram of the accelerated oxidation treatment apparatus 7. The accelerated oxidation treatment apparatus 7 includes an ozone generator 41, a high voltage power supply 45, a compressor 46, an ejector 48, and an accelerated oxidation treatment device 51. An air dryer is added to the compressor 46.
オゾン生成器４１は、高圧電源４５の接続された電極４２を有している。この電極４２の周囲を流れるように、コンプレッサ４６からオゾン生成器４１に圧縮された乾燥空気が供給される。電極４２の放電区間を乾燥空気が流れることでオゾンが生成される。電極４２は高温になるため、電極４２を非接触で取り囲むように、冷却水Ａの流れる筒状の流路４３が形成されている。冷却水Ａとして、配管２２（図１参照）から枝分かれした配管３２により、被処理水９２（図１参照）がオゾン生成器４１に供給されている。 The ozone generator 41 has an electrode 42 to which a high voltage power supply 45 is connected. The compressed air is supplied from the compressor 46 to the ozone generator 41 so as to flow around the electrode 42. Ozone is generated by the dry air flowing through the discharge section of the electrode 42. Since the electrode 42 becomes high temperature, a cylindrical flow path 43 through which the cooling water A flows is formed so as to surround the electrode 42 in a non-contact manner. As the cooling water A, to-be-treated water 92 (see FIG. 1) is supplied to the ozone generator 41 through a pipe 32 branched from the pipe 22 (see FIG. 1).
オゾン生成器４１によって生成されたオゾン、及びオゾン生成器４１から排出された冷却水Ａは、共にエジェクタ４８に供給されている。オゾンは、エジェクタ４８によって水（元の冷却水Ａ）中に放出され、微細気泡の状態になる。エジェクタ４８の出力は、促進酸化処理器５１の上流側に接続されている。このため、促進酸化処理器５１の上流側で、第１の処理水９３にオゾンが混合される。 Both the ozone generated by the ozone generator 41 and the cooling water A discharged from the ozone generator 41 are supplied to the ejector 48. The ozone is released into the water (original cooling water A) by the ejector 48 and becomes a fine bubble state. The output of the ejector 48 is connected to the upstream side of the accelerated oxidation processor 51. For this reason, ozone is mixed with the first treated water 93 on the upstream side of the accelerated oxidation processor 51.
促進酸化処理器５１は、紫外線ランプ５２、ガラス筒５３、光触媒５４、流路５５、及び外筒５６を備えている。紫外線ランプ５２は、発光部が棒状に形成されたものであり、促進酸化処理器５１の中心部に配置されている。紫外線ランプ５２の周囲には、紫外線を透過する透明又は半透明な円筒状のガラス筒５３が配置されている。ガラス筒５３は一例として、石英ガラスで形成されている。ガラス筒５３の周囲には、ガラス筒５３よりも径の大きな円筒状の外筒５６が配置されている。ガラス筒５３と外筒５６との間の空間が、水の流路５５になっている。流路５５には、所定間隔ごとに、光触媒５４，５４・・・が配置されている。光触媒５４は、二酸化チタンであり、水が通過可能な網状に形成されたチタン又はチタン合金製の大表面積材料の表面に形成されている。 The accelerated oxidation processor 51 includes an ultraviolet lamp 52, a glass cylinder 53, a photocatalyst 54, a flow path 55, and an outer cylinder 56. The ultraviolet lamp 52 has a light emitting portion formed in a rod shape, and is disposed at the center of the accelerated oxidation processor 51. Around the ultraviolet lamp 52, a transparent or translucent cylindrical glass tube 53 that transmits ultraviolet rays is disposed. As an example, the glass tube 53 is made of quartz glass. A cylindrical outer cylinder 56 having a diameter larger than that of the glass cylinder 53 is disposed around the glass cylinder 53. A space between the glass cylinder 53 and the outer cylinder 56 is a water flow path 55. In the flow channel 55, photocatalysts 54, 54... Are arranged at predetermined intervals. The photocatalyst 54 is titanium dioxide, and is formed on the surface of a large surface area material made of titanium or a titanium alloy formed in a net shape through which water can pass.
促進酸化処理装置７では、第１の処理水９３にオゾンが混合され、このオゾンの混合された第１の処理水９３が促進酸化処理器５１を通る際に紫外線ランプ５２から紫外線が照射され、光触媒５４に接触して光触媒作用を施される。これらの促進酸化処理により、ヒドロキシラジカル（・ＯＨ）などの強力な酸化力を持つ活性ラジカル種が発生して、水中の有機物などが酸化して分解除去される。又、促進酸化処理には、殺菌、脱臭、脱色効果もある。促進酸化処理器５１で浄化された第２の処理水９５が配管２７から排出される。 In the accelerated oxidation treatment apparatus 7, ozone is mixed with the first treated water 93, and ultraviolet rays are irradiated from the ultraviolet lamp 52 when the first treated water 93 mixed with ozone passes through the accelerated oxidation treatment device 51, A photocatalytic action is applied in contact with the photocatalyst 54. By these accelerated oxidation treatments, active radical species having strong oxidizing power such as hydroxy radicals (.OH) are generated, and organic substances in water are oxidized and decomposed and removed. The accelerated oxidation treatment also has sterilization, deodorization, and decolorization effects. The second treated water 95 purified by the accelerated oxidation processor 51 is discharged from the pipe 27.
尚、図３では、オゾン生成器４１と促進酸化処理器５１とが別体で構成された例を示したが、オゾン生成器４１と促進酸化処理器５１とが一体的に構成された促進酸化処理装置７を用いてもよい。又、促進酸化処理装置７が、オゾンの混合、紫外線の照射、及び光触媒作用を施す例を示したが、オゾンの混合、過酸化水素の混合、紫外線の照射、及び光触媒作用から選ばれる少なくとも１種を施すものを用いるようにしてもよい。 3 shows an example in which the ozone generator 41 and the accelerated oxidation processor 51 are configured separately, the accelerated oxidation in which the ozone generator 41 and the accelerated oxidation processor 51 are integrally configured. The processing device 7 may be used. In addition, although the example in which the accelerated oxidation treatment apparatus 7 performs ozone mixing, ultraviolet irradiation, and photocatalytic action has been shown, at least one selected from ozone mixing, hydrogen peroxide mixing, ultraviolet irradiation, and photocatalytic action. You may make it use what seeds.
次に、上記のように構成された循環型水処理装置１の全体的な動作について説明する。 Next, the overall operation of the circulating water treatment apparatus 1 configured as described above will be described.
図１に、循環型水処理装置１が被処理水９２を浄化するろ過工程を行っている際の水の流れを二点鎖線矢印で示す。ろ過工程では、制御部８は、二点鎖線矢印で示した方向に水が流れるように、五方切換弁３を切り換える。 In FIG. 1, the flow of water when the circulation type water treatment apparatus 1 is performing the filtration process which purifies the to-be-processed water 92 is shown with a dashed-two dotted line arrow. In the filtration step, the control unit 8 switches the five-way switching valve 3 so that water flows in the direction indicated by the two-dot chain line arrow.
ろ過工程では、貯水場所９１の被処理水９２が循環ポンプ２によって吸水されて、配管２１、循環ポンプ２、配管２２を通り、五方切換弁３を通過して、配管２３を通り、ろ過器５に給水される。ろ過器５でろ過されて排水された第１の処理水９３は、配管２４を通り、五方切換弁３を通過して、配管２５を通り、配管２６と配管２８とに分岐する。配管２６を通った第１の処理水９３は、促進酸化処理装置７に給水される。促進酸化処理装置７によって浄化されて排水された第２の処理水９５は、配管２７を通り、配管２８を通過した第１の処理水９３と混合されて、配管２９を通って貯水場所９１に戻される。ろ過工程では、このようにろ過装置４及び促進酸化処理装置７を通るように水が循環して、被処理水９２が浄化されていく。 In the filtration step, the water to be treated 92 in the water storage place 91 is absorbed by the circulation pump 2, passes through the pipe 21, the circulation pump 2 and the pipe 22, passes through the five-way switching valve 3, passes through the pipe 23, and is filtered. 5 is supplied with water. The first treated water 93 filtered and drained by the filter 5 passes through the pipe 24, passes through the five-way switching valve 3, passes through the pipe 25, and branches into the pipe 26 and the pipe 28. The first treated water 93 that has passed through the pipe 26 is supplied to the accelerated oxidation treatment apparatus 7. The second treated water 95 that has been purified and drained by the accelerated oxidation treatment device 7 passes through the pipe 27, is mixed with the first treated water 93 that has passed through the pipe 28, and passes through the pipe 29 to the water storage location 91. Returned. In the filtration step, the water is circulated through the filtration device 4 and the accelerated oxidation treatment device 7 in this way, and the treated water 92 is purified.
このとき、促進酸化処理装置７に処理に適した範囲内の水量が供給されるように、調整弁１１を調整（手動で調整）または制御部８を介して制御（電気的に調整）してバイパス路（配管２８）側に第１の処理水９３の一部を流すようにすることが好ましい。バイパス路を設けるのは、ろ過装置４は促進酸化処理装置７よりも構造が簡便であるため、ろ過装置４の処理可能水量のほうが促進酸化処理装置７の処理可能水量よりも大きい場合が多いためである。バイパス路を設けることで、促進酸化処理装置７に処理に適した水量が流されるため、水の浄化処理を効率的に行うことができる。 At this time, the regulating valve 11 is adjusted (manually adjusted) or controlled (electrically adjusted) through the control unit 8 so that the water amount within the range suitable for the treatment is supplied to the accelerated oxidation treatment device 7. It is preferable that a part of the first treated water 93 is allowed to flow toward the bypass path (pipe 28). The reason why the bypass device is provided is that the filtration device 4 has a simpler structure than the accelerated oxidation treatment device 7, and therefore the amount of water that can be treated by the filtration device 4 is often larger than the amount of water that can be treated by the accelerated oxidation treatment device 7. It is. By providing the bypass path, a water amount suitable for the treatment is caused to flow through the accelerated oxidation treatment apparatus 7, so that the water purification treatment can be performed efficiently.
例えば、循環ポンプ２の吸水能力が一定の場合、促進酸化処理装置７に所定の水量が流れるように、調整弁１１を一定の開度に調整または制御部８を介して予め決められた一定の開度に制御するようにしてもよい。この場合、調整弁１１を設けずに所定の水量が流れるような太さの配管２８を用いるようにしてもよい。又、例えば、循環ポンプ２の吸水能力が可変制御可能な場合、制御部８は、循環ポンプ２の吸水能力の可変状況に対応させて、促進酸化処理装置７に一定の水量が流れるように、調整弁１１の開度を調整してもよい。又、例えば、促進酸化処理装置７に水の流量を測定する流量計（図示せず）を配置して、この流量計の測定結果が促進酸化処理装置７の処理に最適な流量になるように、制御部８が調整弁１１の開度をフィードバック制御するようにしてもよい。又、例えば、第１の処理水９３及び／又は第２の処理水９５の濁度又は紫外線吸光度などの水の汚れに関連する指標を測定するセンサ（図示せず）を配置し、水の汚れの程度に対応させるように、制御部８が調整弁１１の開度をフィードバック制御するようにしてもよい。又、例えば、上記の流量計及びセンサを配置して、促進酸化処理装置７に流れる水の流量及び水の汚れに関連する指標に基づいて、処理に最適な流量になるように、制御部８が調整弁１１の開度をフィードバック制御するようにしてもよい。 For example, when the water absorption capacity of the circulation pump 2 is constant, the regulating valve 11 is adjusted to a certain degree of opening so as to allow a predetermined amount of water to flow through the accelerated oxidation treatment device 7 or a constant value determined in advance via the control unit 8. You may make it control to an opening degree. In this case, the pipe 28 having a thickness that allows a predetermined amount of water to flow without using the regulating valve 11 may be used. Further, for example, when the water absorption capacity of the circulation pump 2 can be variably controlled, the control unit 8 corresponds to the variable situation of the water absorption capacity of the circulation pump 2 so that a constant amount of water flows to the accelerated oxidation treatment device 7. The opening degree of the adjusting valve 11 may be adjusted. Further, for example, a flow meter (not shown) for measuring the flow rate of water is arranged in the accelerated oxidation treatment device 7 so that the measurement result of this flow meter becomes an optimum flow rate for the treatment of the accelerated oxidation treatment device 7. The control unit 8 may feedback-control the opening degree of the regulating valve 11. In addition, for example, a sensor (not shown) that measures an index related to water contamination such as turbidity or ultraviolet absorbance of the first treated water 93 and / or the second treated water 95 is disposed, and the water stains. The control unit 8 may perform feedback control on the opening degree of the regulating valve 11 so as to correspond to the degree. Further, for example, the control unit 8 is arranged so that the flow rate and the sensor described above are arranged so that the flow rate is optimal for the treatment based on the flow rate of the water flowing through the accelerated oxidation treatment device 7 and the index related to the water contamination. However, the opening degree of the regulating valve 11 may be feedback controlled.
一例として示すと、促進酸化処理装置７に流す水量：バイパス路に流す水量は、１：１〜１：１０程度であることが好ましく、１：１〜１：３であることがより好ましい。 As an example, the amount of water flowing to the accelerated oxidation treatment device 7: The amount of water flowing to the bypass path is preferably about 1: 1 to 1:10, and more preferably 1: 1 to 1: 3.
尚、ろ過装置４と促進酸化処理装置７との処理可能水量が同じか、促進酸化処理装置７の処理可能水量の方がろ過装置４よりも大きい場合には、バイパス路（配管２８）を設けなくてもよい。 When the amount of water that can be treated by the filtration device 4 and the accelerated oxidation treatment device 7 is the same or the amount of water that can be treated by the accelerated oxidation treatment device 7 is larger than that of the filtration device 4, a bypass passage (pipe 28) is provided. It does not have to be.
制御部８は、ろ過工程を行った後に逆洗工程を行い、ろ過材６に溜まった残渣を除去すると共にろ過材６を洗浄して復活させる。制御部８は、例えば洗浄工程を定期的に実施する。又は、制御部８は、例えばろ過器５を通過する水の流量を水流計（図示せず）で検知して、水の流量が所定の閾値よりも小さくなったと判別したときに逆洗工程を実施するようにしてもよい。 The control unit 8 performs the backwashing process after performing the filtration process, removes the residue accumulated in the filter medium 6 and cleans and restores the filter medium 6. For example, the control unit 8 periodically performs a cleaning process. Or the control part 8 detects the flow volume of the water which passes the filter 5, for example with a water flow meter (not shown), and when it determines with the flow volume of the water becoming smaller than the predetermined threshold value, a backwash process is performed. You may make it implement.
図２に、循環型水処理装置１が逆洗工程を行っている際の水の流れを二点鎖線矢印で示す。この逆洗工程では、制御部８は、二点鎖線矢印で示した方向に水が流れるように、五方切換弁３を切り換える。 In FIG. 2, the flow of water when the circulating water treatment apparatus 1 is performing the backwashing process is indicated by a two-dot chain line arrow. In this backwash process, the control unit 8 switches the five-way switching valve 3 so that water flows in the direction indicated by the two-dot chain line arrow.
逆洗工程では、貯水場所９１の被処理水９２が循環ポンプ２によって吸水されて、配管２１、循環ポンプ２、配管２２を通り、五方切換弁３を通過して、配管２４を通り、ろ過器５の排水口に給水される。これにより、ろ過材６が逆洗されて、その逆洗排水９７がろ過器５の給水口から排出されて配管２３を通り、五方切換弁３を通過して、配管３１を通って貯水場所９１に排出される。 In the backwashing process, the water to be treated 92 in the water storage place 91 is absorbed by the circulation pump 2, passes through the pipe 21, the circulation pump 2, the pipe 22, passes through the five-way switching valve 3, passes through the pipe 24, and is filtered. Water is supplied to the drain of the vessel 5. Thereby, the filter medium 6 is backwashed, and the backwash drainage 97 is discharged from the water supply port of the filter 5, passes through the pipe 23, passes through the five-way switching valve 3, and passes through the pipe 31 to store the water. 91 is discharged.
普通に考えると、逆洗排水９７を貯水場所９１に戻してしまえば、ろ過工程でろ過した残渣やろ過材６に付着した残渣が再び貯水場所９１に戻ってしまうため、貯水場所９１の被処理水９２は再度汚れてしまい、いつまでも浄化されないように思われる。ところが、本発明を適用する循環型水処理装置１を稼働させることで、被処理水９２を浄化することができる。 In general, if the backwash wastewater 97 is returned to the water storage location 91, the residue filtered in the filtration process or the residue adhering to the filter medium 6 will return to the water storage location 91 again. It appears that the water 92 has become dirty again and will not be purified indefinitely. However, the water 92 to be treated can be purified by operating the circulating water treatment apparatus 1 to which the present invention is applied.
その理由は次のように推察される。すなわち、循環型水処理装置１に促進酸化処理装置７が備えられていることで、被処理水９２中の有機物等は徐々に分解除去されていく。ろ過装置４の下流に促進酸化処理装置７が配置されているため、促進酸化処理装置７には汚れが溜まらない。そのため、光触媒５４の形成されている大表面積材料が目詰まりせずに正常に動作を続けることができる。ろ過装置４でろ過された残渣には有機物が多く含まれていると考えられ、ろ過装置４でろ過と逆洗が繰り返されるうちに、次第に残渣が微細化されてろ過装置４を通過するようになり、促進酸化処理装置７で分解除去されていく。促進酸化処理装置７で分解除去される過程を繰り返す事で、被処理水９２の浄化が行われる事象から、逆洗排水９７を貯水場所９１に戻しても被処理水９２が次第に浄化されていくと考えられる。 The reason is guessed as follows. That is, by providing the circulatory water treatment device 1 with the accelerated oxidation treatment device 7, organic substances and the like in the treated water 92 are gradually decomposed and removed. Since the accelerated oxidation treatment device 7 is disposed downstream of the filtration device 4, no dirt accumulates in the accelerated oxidation treatment device 7. Therefore, the large surface area material on which the photocatalyst 54 is formed can continue to operate normally without clogging. It is considered that the residue filtered by the filtering device 4 contains a lot of organic substances, and the residue is gradually refined and passes through the filtering device 4 while filtration and backwashing are repeated by the filtering device 4. Thus, it is decomposed and removed by the accelerated oxidation treatment device 7. By repeating the process of being decomposed and removed by the accelerated oxidation treatment device 7, the treated water 92 is gradually purified from the event that the treated water 92 is purified even if the backwash drainage 97 is returned to the water storage location 91. it is conceivable that.
次に、本発明を適用する別の循環型水処理装置１ａについて、図４を参照して説明する。 Next, another circulating water treatment apparatus 1a to which the present invention is applied will be described with reference to FIG.
図４に示す循環型水処理装置１ａは、既に説明した循環型水処理装置１の逆洗排水９７の排水路となる配管３１の途中に液固分離装置９が追加されたものである。循環型水処理装置１ａの他の構成は、循環型水処理装置１と同様であるので、循環型水処理装置１と同様の符号を付して詳細な説明は省略する。又、循環型水処理装置１ａのろ過工程は、循環型水処理装置１のろ過工程と同様であるため説明を省略する。 The circulation type water treatment device 1a shown in FIG. 4 is obtained by adding a liquid-solid separation device 9 in the middle of the pipe 31 that becomes the drainage path of the backwash drainage 97 of the circulation type water treatment device 1 already described. Since the other structure of the circulation type water treatment apparatus 1a is the same as that of the circulation type water treatment apparatus 1, the same reference numerals as those of the circulation type water treatment apparatus 1 are used and detailed description thereof is omitted. Moreover, since the filtration process of the circulation type water treatment apparatus 1a is the same as the filtration process of the circulation type water treatment apparatus 1, description is abbreviate | omitted.
循環型水処理装置１ａは、循環ポンプ２、ろ過装置４、促進酸化処理装置７、制御部８、及び液固分離装置９を備え、貯水場所９１に貯水されている被処理水９２を浄化するよう構成されている。 The circulation type water treatment device 1 a includes a circulation pump 2, a filtration device 4, an accelerated oxidation treatment device 7, a control unit 8, and a liquid-solid separation device 9, and purifies treated water 92 stored in a water storage location 91. It is configured as follows.
液固分離装置９は、逆洗排水９７中の液体と固体とを分離して固体を回収するためのものである。液固分離装置９は、例えば、遠心分離機、真空脱水機、加圧脱水機、多重円板脱水機、沈殿槽など公知のものを使用することができる。特に、液固分離装置９として、遠心分離機を好ましく用いることができる。 The liquid-solid separation device 9 is for separating the liquid and the solid in the backwash waste water 97 and recovering the solid. As the liquid-solid separation device 9, for example, a known device such as a centrifugal separator, a vacuum dehydrator, a pressure dehydrator, a multiple disk dehydrator, a precipitation tank, or the like can be used. In particular, a centrifuge can be preferably used as the liquid-solid separator 9.
同図中に、循環型水処理装置１ａが逆洗工程を行っている際の水の流れを二点鎖線矢印で示す。制御部８は、循環型水処理装置１と同様に、二点鎖線矢印で示した方向に水が流れるように、五方切換弁３を切り換える。 In the figure, the flow of water when the circulating water treatment apparatus 1a is performing the backwashing process is indicated by a two-dot chain arrow. The control unit 8 switches the five-way switching valve 3 so that water flows in the direction indicated by the two-dot chain line arrow, similarly to the circulating water treatment apparatus 1.
この循環型水処理装置１ａでは、逆洗排水９７が液固分離装置９を通る。従って、液固分離装置９によって逆洗排水９７中の固体が回収され、固体分を含まない液体が貯水場所９１に戻される。このため、ろ過装置４でろ過された残渣が液固分離装置９によってほとんど回収除去される。つまり、浄化された逆洗排水９７が貯水場所９１に戻される。従って、被処理水９２が逆洗排水９７によって汚れることが防止され、被処理水９２の浄化速度を早くすることができる。 In this circulation type water treatment device 1 a, the backwash waste water 97 passes through the liquid-solid separation device 9. Therefore, the solid in the backwash waste water 97 is recovered by the liquid / solid separation device 9, and the liquid not containing the solid is returned to the water storage place 91. For this reason, the residue filtered by the filtration device 4 is almost recovered and removed by the liquid-solid separation device 9. That is, the purified backwash drainage 97 is returned to the water storage location 91. Therefore, the treated water 92 is prevented from being contaminated by the backwash drainage 97, and the purification rate of the treated water 92 can be increased.
液固分離装置９によって回収された固体分は、適切な場所に廃棄すればよい。 What is necessary is just to discard the solid content collect | recovered by the liquid-solid separation apparatus 9 in a suitable place.
以上説明したように、循環型水処理装置１、１ａを用いることで、逆洗排水９７を河川などの外部に排出することなく、貯水場所９１の被処理水９２を浄化することができる。 As described above, by using the circulating water treatment apparatuses 1 and 1a, the water to be treated 92 in the water storage place 91 can be purified without discharging the backwash drainage 97 to the outside of a river or the like.
図４に示した循環型水処理装置１ａを製造して、池に貯水されている水の浄化処理試験を実施した。貯水場所９１として、鑑賞池を使用した。この鑑賞池を２つに区画して、その一方を浄化試験を実施する処理区とし、他方を浄化処理を実施しない対照区とした。 The circulating water treatment apparatus 1a shown in FIG. 4 was manufactured, and a purification treatment test of water stored in the pond was performed. An appreciation pond was used as the water storage location 91. This appreciation pond was divided into two, one of which was used as a treatment zone for carrying out a purification test, and the other was used as a control zone for which no purification treatment was carried out.
［循環型水処理装置の仕様］
・砂ろ過装置：ろ過材(アンスラサイト1.25mm(平均)、ろ過砂利2mm,4mm,8mm)、
FRP製タンク、五方切換弁、配管類共、逆洗機能あり
・促進酸化水処理装置：О3＋紫外線＋光触媒による促進酸化処理（AOP）
・循環ポンプ：3φ 200V 2.2kW
・処理可能水量：6.8m3/h(163m3/day)
・コンプレッサ：415×210×514mm 0.6-0.8MPa 24L/min
・促進酸化水処理装置に流す水量：バイパス路に流す水量＝１：１〜１：３
・液固分離装置：沈殿槽
[Specifications of circulating water treatment equipment]
・ Sand filter: Filter material (Anthracite 1.25mm (average), Filter gravel 2mm, 4mm, 8mm),
FRP tank, five-way selector valve, piping, backwashing function, accelerated oxidation water treatment device: Accelerated oxidation treatment (AOP) with О 3 + UV light + photocatalyst
・ Circulation pump: 3φ 200V 2.2kW
・ Amount of water that can be treated: 6.8m 3 / h (163m 3 / day)
・ Compressor: 415 × 210 × 514mm 0.6-0.8MPa 24L / min
-Amount of water to flow to the accelerating oxidized water treatment device: Amount of water to flow to bypass path = 1: 1 to 1: 3
・ Liquid-solid separator: Precipitation tank
［実証試験実施場所］
・名称：株式会社竹村製作所 観賞池（観賞魚が飼育されている）
・所在地：長野県長野市小島127
・面積約78m2
・水深：約0.55ｍ
・貯水量：約34m3（滝落とし部分は試験に供しないため含めず）
・流入量：池水はポンプにより循環しているため、水量が減少した時に水道水を供給する。
・水域の抱える主な課題：藻類によるカビ臭や透視度低下による景観の悪化等
年１回の清掃作業が必要
・推定される汚濁要因：池への外部からの流入はなく、汚染源は池水の長時間の滞留に
よる水質悪化であると考えられる。
・鑑賞池の中央部を隔離壁で２分割し、試験区と対照区とした。
・観賞魚：試験区33尾（13.5kg）,対照区32尾（13.0kg）
[Location of demonstration test]
・ Name: Takemura Seisakusho Co., Ltd. Ornamental pond (aquarium fish is raised)
・ Location: 127 Kojima, Nagano City, Nagano Prefecture
・ Area of about 78m 2
・ Water depth: Approximately 0.55m
・ Water storage capacity: approx. 34m 3 (not including the waterfall drop because it is not used for testing)
・ Inflow: Since pond water is circulated by a pump, tap water is supplied when the amount of water decreases.
・ Main issues of water areas: Mold odor caused by algae and landscape deterioration due to reduced transparency
Pollution factors that are required and estimated to be cleaned once a year: There is no inflow from the outside to the pond, and the source of pollution is a long stay in the pond water
It is thought that the water quality deteriorates.
・ The central part of the viewing pond was divided into two by an isolation wall, which was used as a test zone and a control zone.
-Ornamental fish: 33 fish (13.5kg) in the test zone, 32 fish (13.0kg) in the control zone
［実証試験項目および水質目標値］
*2：不飽和結合を有する有機物質は紫外部に吸収を示す。
[Verification test items and water quality target values]
* 2: Organic substances with unsaturated bonds absorb in the ultraviolet region.
［試料の採取方法］
池水の採取は、地下水採水用のベーラーを改良したポリエチレン製円筒形採水器を使用し、水面から垂直円筒状に採水した。採水は、３地点で柱状に採水し、３地点分を混合して１試料とし、JIS K 0094（試料の保存処理）に従って保存した。
[Sample collection method]
The pond water was collected from a water surface in a vertical cylindrical shape using a polyethylene cylindrical water sampler with an improved baler for groundwater sampling. The water sample was collected in a columnar shape at three points, mixed for three points to make one sample, and stored according to JIS K 0094 (sample storage process).
［調査項目の分析方法］
［試験１］
試験１では、循環型水処理装置を仕様どおりに運転（通常運転）させて試験した。
（１）実証項目の結果と目標水準の達成
表３、図５に示したとおり、濁度（目標水準：改善率70％以上）とCOD（目標水準：改善率40％以上）はともに目標水準を達成した。試験前の平成２７年６月１１日から７月６日にかけて、日照不足等により濁度が大きく変化した。
(2)：改善率とは、装置稼動前(7月6日)に対する各調査日における処理水の水質濃度の比率（％）
[Test 1]
In Test 1, the circulating water treatment apparatus was operated according to the specifications (normal operation) and tested.
(1) Results of demonstration items and achievement of target levels As shown in Table 3 and Fig. 5, turbidity (target level: improvement rate of 70% or higher) and COD (target level: improvement rate of 40% or higher) are both target levels. Achieved. From June 11, 2015 to July 6, before the test, the turbidity changed greatly due to lack of sunshine.
(2): The improvement rate is the ratio (%) of the water quality concentration of treated water on each survey day to before the operation of the equipment (July 6)
試験区と対照区の濃度推移の比較を図６に示した。（水質濃度は図１０を参照） A comparison of the concentration transition between the test group and the control group is shown in FIG. (See Figure 10 for water quality concentration)
（２）関連項目の結果（各水界の状況）
試験区及び対照区の関連項目の結果を図７〜図１１に示した。
(2) Results of related items (status of each aquatic environment)
The results of the related items in the test group and the control group are shown in FIGS.
［試験２］
試験１では、循環型水処理装置がろ過装置及び促進酸化処理装置により構成されている点から、ろ過と促進酸化処理のそれぞれの効果を知るために処理工程内の水質も測定した。稼動後、3日後には濁度が17から3に低減するなど数日の稼動で変化があったため、その後の実証試験の内容だけでは各処理工程の効果について言及できないことが分かった。そのため、それぞれの処理工程の効果を確認するために、促進酸化処理を一時的に止め、ろ過との比較を行う試験を検討し、次のような試験を追加した。
[Test 2]
In Test 1, since the circulating water treatment apparatus is composed of a filtration apparatus and an accelerated oxidation treatment apparatus, the water quality in the treatment process was also measured in order to know the effects of the filtration and the accelerated oxidation treatment. After the operation, the turbidity decreased from 17 to 3 after 3 days, and there was a change in the operation for several days. Therefore, in order to confirm the effect of each processing step, the accelerated oxidation treatment was temporarily stopped, a test for comparison with filtration was examined, and the following test was added.
（１）試験の目的と手順について
本発明の特長でもある促進酸化処理の効果を確認するために、ろ過だけの運転後に促進酸化処理を稼動させて、次のような手順で試験を行った。
(1) About the purpose and procedure of the test In order to confirm the effect of the accelerated oxidation treatment, which is also a feature of the present invention, the accelerated oxidation treatment was operated after the operation of only filtration, and the test was performed in the following procedure.
試験の考え方
実証試験（試験１）実施後、循環型水処理装置の稼動を停止し、実証試験実施場所が再び汚濁が増えるのを待つ方法を考えた。しかし、ろ過のみで運転しても再び汚濁が増えるとの意見があった。ろ過だけで十分に処理ができる場合には、ろ過のみの運転で水界の汚濁が進むことはない。そこで、ろ過のみで運転し、その後に汚濁が進んだ場合に促進酸化処理を再稼動させた後に汚濁が低減できるかを確認した。
１ 試験１の終了後にろ過のみで運転を行った（8/26）。
２ 実証試験の開始と同じ条件である濁度が7度以上になったことを確認して
（9月18日の時点で試験区 濁度24.5 透視度13.0cm）、促進酸化処理を再稼
動させた（9/23 8時）。
３ ３日間、１日２回の測定を行った。測定時刻は、朝及び夕刻、さらに均等
な時間をおくために、8時及び20時に採水した。項目は結果の表のとおりで
ある。
Test concept After conducting the verification test (Test 1), we considered a method of stopping the operation of the circulating water treatment system and waiting for the contamination of the verification test site to increase again. However, there was an opinion that pollution would increase again even if it was operated only by filtration. In the case where the treatment can be sufficiently performed only by filtration, the contamination of the water world does not proceed only by the operation of filtration. Therefore, it was confirmed whether or not the pollution could be reduced after restarting the accelerated oxidation treatment when the operation was performed only by filtration and the pollution progressed thereafter.
1 After the completion of Test 1, operation was performed only by filtration (8/26).
2 Confirm that the turbidity, which is the same condition as the start of the demonstration test, is 7 degrees or more (as of September 18, the turbidity is 24.5, the transparency is 13.0 cm), and restart the accelerated oxidation treatment. (9/23 8 o'clock).
3 Measurement was performed twice a day for 3 days. The measurement time was in the morning and evening, and water was collected at 8 and 20:00 in order to have a more even time. The items are as shown in the results table.
（２）測定結果について
試験２の結果を表４、図１２に示した。9月２３日８時の測定値は、稼動直前の値であり、濃度比率での処理率を算出すると、数日間で低減の効果が確認された。また、稼働直前（9月２３日８：００）の採取試料で確認された主な植物プランクトン（Monoraphidium sp.（緑藻類）、Peridinium sp.（渦鞭毛藻類））の中で、Monoraphidium sp.は処理後（9月２５日）の採取試料でも優占種として確認されたことから、本種は酸化の影響を受けにくいことが確認された。
(2) About a measurement result The result of the test 2 was shown in Table 4 and FIG. The measured value at 8 o'clock on September 23 was the value immediately before the operation, and the reduction effect was confirmed in several days when the treatment rate in the concentration ratio was calculated. Among the main phytoplankton (Monoraphidium sp. (Green algae), Peridinium sp. (Dinoflagellate algae)) confirmed in samples collected immediately before operation (September 23, 8:00), Monoraphidium sp. The sample collected later (September 25) was also confirmed as the dominant species, confirming that this species is less susceptible to oxidation.
［逆洗排水について］
逆洗排水に含まれる汚泥が臭気の原因となる可能性はあるものの異臭の発生はなかった。
実証対象技術では、ろ過処理後に定期的に行われる逆洗（ろ過材の洗浄）によりSSが含まれた排水が発生する。固体分を沈殿させて、系外に搬出する構成であるが、逆洗水のSSと沈殿させた際の汚泥濃度を測定し、表５に示した。排出量は浄化する池の汚濁に応じて異なるが、本実証試験で発生した汚泥量は、0.52m3であった。
[About backwash drainage]
Although the sludge contained in the backwash wastewater may cause odor, no off-flavor was generated.
In the verification target technology, wastewater containing SS is generated by backwashing (filter material washing) that is performed regularly after filtration. The solid content is precipitated and transported out of the system. The concentration of sludge when precipitated with SS and backwash water was measured and shown in Table 5. The amount of discharge varies depending on the pollution of the pond to be purified, but the amount of sludge generated in this demonstration test was 0.52m 3 .
図１３に、平成２７年８月２５日の対照区と試験区の様子を示す写真と共に、採取試料の写真を示す。採取試料は、１.対照区、２.試験区、３.砂ろ過処理水、４.促進酸化処理水、５.逆洗開始排水、６.逆洗中間排水、７.逆洗終了排水、８.逆洗排水戻り水である。 FIG. 13 shows a photograph of the collected sample together with a photograph showing the state of the control group and the test group on August 25, 2015. Collected samples are: 1. Control zone, 2. Test zone, 3. Sand filtration treated water, 4. Promoted oxidation treated water, 5. Backwash start drainage, 6. Backwash intermediate drainage, 7. Backwash end drainage, 8 .Backwash drainage return water.
［試験結果について］
試験１では、実証項目の濁度は3日後、CODは3日後〜7日後の間に目標水準に達成したことを確認した。また、参考項目の溶存態全有機体炭素及び紫外線吸光度が減少したことから、促進酸化による溶解性の有機物の分解と思われる効果を確認した。
試験２では、3日間の処理で、濁度(58.1%)、COD(45.6%)、SS(65.0%)、クロロフィル-a(90.9%)の低減を確認した。
本発明の特長である、ろ過による懸濁物質の除去と促進酸化処理による藻類の増殖抑制を確認した。特にクロロフィル-aが急速に減少し（試験２）、藻類の増殖抑制により各汚濁濃度が低減した（試験１）。
[About test results]
In Test 1, it was confirmed that the turbidity of the demonstration item reached the target level after 3 days and the COD reached the target level between 3 days and 7 days later. In addition, since the dissolved total organic carbon and UV absorbance of the reference items decreased, an effect that seems to be the decomposition of soluble organic substances by accelerated oxidation was confirmed.
In Test 2, the reduction of turbidity (58.1%), COD (45.6%), SS (65.0%), and chlorophyll-a (90.9%) was confirmed after 3 days of treatment.
The characteristics of the present invention were confirmed by the removal of suspended solids by filtration and the suppression of algae growth by accelerated oxidation treatment. In particular, chlorophyll-a rapidly decreased (Test 2), and each pollutant concentration was reduced by suppressing the growth of algae (Test 1).
［用語の解説］
１は循環型水処理装置、２は循環ポンプ、３は五方切換弁、４はろ過装置、５はろ過器、６はろ過材、７は促進酸化処理装置、８は制御部、９は液固分離装置、１１は調整弁、２１・２２・２３・２４・２５・２６・２７・２８・２９・３１・３２は配管、４１はオゾン生成器、４２は電極、４５は高圧電源、４６はコンプレッサ、４８はエジェクタ、５１は促進酸化処理器、５２は紫外線ランプ、５３はガラス筒、５４は光触媒、５５は流路、５６は外筒、６１は給水口、６２は排水口、９１は貯水場所、９２は被処理水、９３は第１の処理水、９５は第２の処理水、９７は逆洗排水、Ａは冷却水である。 1 is a circulation type water treatment device, 2 is a circulation pump, 3 is a five-way switching valve, 4 is a filtration device, 5 is a filter, 6 is a filter medium, 7 is an accelerated oxidation treatment device, 8 is a control unit, and 9 is a liquid. Solid separation device, 11 is a regulating valve, 21, 22, 23, 24, 25, 26, 27, 28, 29, 31, and 32 are pipes, 41 is an ozone generator, 42 is an electrode, 45 is a high voltage power source, and 46 is Compressor, 48, ejector, 51, accelerated oxidizer, 52, ultraviolet lamp, 53, glass tube, 54, photocatalyst, 55, flow path, 56, outer tube, 61, water supply port, 62, water discharge port, 91, water storage Location, 92 is treated water, 93 is first treated water, 95 is second treated water, 97 is backwash waste water, and A is cooling water.
Claims (3)
前記循環ポンプの吸水した前記被処理水をろ過材に通して浄化するろ過装置と、
前記ろ過装置を通して浄化された第１の処理水を促進酸化処理して、水中の汚染物を酸化分解して浄化する促進酸化処理装置とを備え、前記促進酸化処理装置を通して浄化された第２の処理水を前記貯水場所に戻す循環型水処理装置であって、
前記促進酸化処理装置は、前記第１の処理水に、オゾンの混合、紫外線の照射、及び光触媒作用を施すことで前記促進酸化処理するものであり、
前記ろ過装置は、前記循環ポンプの吸水した前記被処理水によって前記ろ過材を逆洗するための逆洗手段を有しており、前記ろ過装置には、逆洗に用いられた排水をそのまま前記貯水場所に戻すための排水路が接続されていることを特徴とする循環型水処理装置。 A circulation pump that absorbs the treated water stored in the water storage place;
A filtration device for purifying the treated water absorbed by the circulation pump through a filter medium;
An accelerated oxidation treatment device that promotes oxidation treatment of the first treated water purified through the filtration device and oxidatively decomposes and purifies contaminants in the water, and the second treated water is purified through the accelerated oxidation treatment device. A circulating water treatment device for returning treated water to the water storage place,
The accelerated oxidation treatment apparatus performs the accelerated oxidation treatment by subjecting the first treated water to ozone mixing, ultraviolet irradiation, and photocatalysis.
The filtration device has backwashing means for backwashing the filter medium with the treated water absorbed by the circulation pump, and the wastewater used for backwashing is directly used in the filtration device. A circulation type water treatment apparatus, wherein a drainage channel for returning to a water storage place is connected.
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| KR20230164193A (en) * | 2017-10-31 | 2023-12-01 | 가부시키가이샤 기츠 | Washing water treatment method |
| WO2021132210A1 (en) * | 2019-12-23 | 2021-07-01 | 有限会社フリーウェイ | Loading-type multi-stage filtration device |
| CN112979043B (en) | 2021-03-05 | 2022-08-26 | 生态环境部南京环境科学研究所 | Purification and recovery device of synergistic eluent for restoring organochlorine pesticide contaminated soil |
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| JPH0663106U (en) * | 1993-01-11 | 1994-09-06 | バイタル・ジャパン株式会社 | Filtration tank structure |
| JPH10235118A (en) * | 1997-02-28 | 1998-09-08 | Amano Corp | Device for cleaning pond water or the like |
| JP2001198416A (en) * | 2000-01-20 | 2001-07-24 | Matsushita Electric Ind Co Ltd | Water cleaning apparatus |
| JP2004243166A (en) * | 2003-02-12 | 2004-09-02 | Science Kk | Sterilization method of bath tub hot water and sterilization apparatus thereof |
| JP2005111215A (en) * | 2003-10-06 | 2005-04-28 | Shinano Camera Kogyo Kk | Method and system for disinfecting and cleaning of filter device in back washing thereof |
| JP2006035200A (en) * | 2004-07-27 | 2006-02-09 | Shinano Camera Kogyo Kk | Recycling system of back washing water |
| JP2010069353A (en) * | 2008-09-16 | 2010-04-02 | Toyo Valve Co Ltd | Cleaning apparatus |
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| KR102059654B1 (en) * | 2019-09-20 | 2019-12-26 | 정연태 | Sterilization Apparatus For Water Tank |
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