TWI748318B - Water purifying apparatus and method of operating same - Google Patents

Water purifying apparatus and method of operating same Download PDF

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TWI748318B
TWI748318B TW109100133A TW109100133A TWI748318B TW I748318 B TWI748318 B TW I748318B TW 109100133 A TW109100133 A TW 109100133A TW 109100133 A TW109100133 A TW 109100133A TW I748318 B TWI748318 B TW I748318B
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water
membrane
membrane filtration
concentrated
power generation
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TW202035013A (en
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佐佐木慶介
日高真生
中村勇規
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日商奧璐佳瑙股份有限公司
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/06—Energy recovery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44—Ion-selective electrodialysis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44—Ion-selective electrodialysis
    • B01D61/46—Apparatus therefor
    • B01D61/48—Apparatus therefor having one or more compartments filled with ion-exchange material, e.g. electrodeionisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/58—Multistep processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis

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  • Water Supply & Treatment (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Urology & Nephrology (AREA)
  • Analytical Chemistry (AREA)
  • Molecular Biology (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

An object of the invention is to conserve energy by effectively using energy that was being consumed wastefully. A water purifying apparatus 1 comprises a membrane filtration device 2 incorporating a reverse osmosis membrane or nanofiltration membrane which separates the water to be treated into a permeate and a concentrate, a water treatment device 3 which treats any one of the water to be treated, the permeate and the concentrate, and a hydroelectric generator 5 which is provided on a concentrate line L3 through which the concentrate flows from the membrane filtration device 2, generates power using the flow of the concentrate through the concentrate line L3, and supplies the generated power to the water treatment device 3.

Description

純水製造裝置及其運轉方法Pure water production device and its operating method

本發明有關一種純水製造裝置及其運轉方法。The invention relates to a pure water production device and an operating method thereof.

作為由工業用水、井水、自來水等原水來製造純水之方法，有一種利用逆滲透膜（RO膜）或是奈米過濾膜（NF膜）與離子交換體之方法已為吾人所習知。根據這方法，將原水以RO膜或是NF膜分離成濾透水與濃縮水之後，再將濾透水往離子交換體輸水，進而可製造去離子水（純水）。亦即，作為由原水製造純水之裝置，有一種具有RO膜或是NF膜之膜過濾裝置與電氣式去離子水製造裝置組合而成之純水製造裝置已為人所知（參照例如，專利文獻1）。 ［習知技術文獻］ ［專利文獻］As a method of producing pure water from raw water such as industrial water, well water, and tap water, a method using reverse osmosis membranes (RO membranes) or nanofiltration membranes (NF membranes) and ion exchangers has been known to us. . According to this method, the raw water is separated into filtered water and concentrated water by RO membrane or NF membrane, and then the filtered water is sent to the ion exchanger to produce deionized water (pure water). That is, as a device for producing pure water from raw water, there is a pure water production device that combines a membrane filtration device with RO membrane or NF membrane and an electrical deionized water production device (see, for example, Patent Document 1). [Literature Technical Literature] [Patent Literature]

專利文獻1：日本特開2001-104959號公報Patent Document 1: Japanese Patent Application Publication No. 2001-104959

［發明所欲解決之課題］[The problem to be solved by the invention]

於此種純水製造裝置，係對膜過濾裝置的RO膜或是NF膜以滲透壓以上的壓力供給原水，利用逆滲透的原理來分離成濾透水與濃縮水。因此，膜過濾裝置所分離之濃縮水變得相較高壓。然而，現實情況是，此類濃縮水的壓力能，用於使濃縮水的一部分往膜過濾裝置的上游側回流，但並未有效利用於其他用途，而被浪費掉。In this type of pure water production device, raw water is supplied to the RO membrane or NF membrane of the membrane filtration device at a pressure higher than the osmotic pressure, and the principle of reverse osmosis is used to separate filtered water and concentrated water. Therefore, the concentrated water separated by the membrane filtration device becomes relatively high pressure. However, the reality is that the pressure energy of this type of concentrated water is used to return a part of the concentrated water to the upstream side of the membrane filtration device, but it is not effectively used for other purposes and is wasted.

於是，本發明的目的在於，提供一種將浪費掉的能量有效利用以實現節能之純水製造裝置及其運轉方法。 ［解決課題之技術手段］Therefore, the object of the present invention is to provide a pure water production device and an operating method thereof that effectively utilize wasted energy to realize energy saving. [Technical means to solve the problem]

為了達成上述的目的，本發明的純水製造裝置，具有：膜過濾裝置，具有將被處理水分離成濾透水與濃縮水之逆滲透膜或是奈米過濾膜；水處理裝置，處理被處理水與濾透水與濃縮水其中之一；及水力發電裝置，設於讓來自膜過濾裝置的濃縮水流通之濃縮水管線，利用流經濃縮水管線之濃縮水的水流進行發電，將所發電之電力往水處理裝置供給。In order to achieve the above-mentioned object, the pure water production device of the present invention has: a membrane filtration device having a reverse osmosis membrane or a nanofiltration membrane that separates the treated water into filtered water and concentrated water; a water treatment device that treats the treated water One of water, filtered water and concentrated water; and a hydroelectric power generation device, which is installed in the concentrated water pipeline that allows the concentrated water from the membrane filter device to circulate, and uses the concentrated water flowing through the concentrated water pipeline to generate electricity. Electricity is supplied to the water treatment device.

另外，本發明的純水製造裝置的運轉方法，其純水製造裝置具有：膜過濾裝置，具有將被處理水分離成濾透水與濃縮水之逆滲透膜或是奈米過濾膜；及水處理裝置，處理被處理水與濾透水與濃縮水其中之一；純水製造裝置的運轉方法包含以下步驟：利用來自膜過濾裝置的濃縮水的水流進行發電，將所發電之電力往水處理裝置供給。In addition, in the method of operating a pure water production device of the present invention, the pure water production device has: a membrane filtration device having a reverse osmosis membrane or a nanofiltration membrane that separates the water to be treated into filtered water and concentrated water; and water treatment A device that treats one of the water to be treated, filtered water, and concentrated water; the operation method of the pure water production device includes the following steps: use the concentrated water flow from the membrane filtration device to generate electricity, and supply the generated electricity to the water treatment device .

根據這種純水製造裝置及其運轉方法，將膜過濾裝置所分離之濃縮水的壓力能作為電力回收，利用於膜過濾裝置所附設之水處理裝置。因此，可使系統全體之能量效率提升。 ［發明功效］According to this pure water production device and its operating method, the pressure energy of the concentrated water separated by the membrane filtration device is recovered as electricity and used in the water treatment device attached to the membrane filtration device. Therefore, the energy efficiency of the entire system can be improved. [Efficacy of invention]

以上，根據本發明，可將浪費掉的能量有效利用以實現節能。Above, according to the present invention, the wasted energy can be effectively used to realize energy saving.

以下，參照圖式，針對本發明的實施形態進行說明。Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（第1實施形態）(First Embodiment)

圖1，係本發明的第1實施形態所屬純水製造裝置的概略構成圖。圖2，係構成圖1的純水製造裝置之電氣式去離子水製造裝置的概略構成圖。此外，所圖示之純水製造裝置及電氣式去離子水製造裝置的構成，係各自獨立的一例，並未限制本發明，可因應裝置的使用目的或用途，要求性能做適當變更，乃是無須待言的。Fig. 1 is a schematic configuration diagram of a pure water production apparatus according to the first embodiment of the present invention. Fig. 2 is a schematic configuration diagram of an electric deionized water production device constituting the pure water production device of Fig. 1. In addition, the configuration of the pure water production device and the electrical deionized water production device shown in the figure is an independent example, and does not limit the present invention. The performance requirements can be changed according to the purpose or application of the device. Needless to say.

純水製造裝置1，係依序處理原水（被處理水）來製造純水，具有膜過濾裝置2、與設於膜過濾裝置2的下游側之電氣式去離子水製造裝置（以下，稱為「EDI裝置」）3。The pure water production device 1 processes raw water (water to be treated) in order to produce pure water. It has a membrane filtration device 2 and an electrical deionized water production device (hereinafter referred to as "EDI device") 3.

膜過濾裝置2，係去除原水中的雜質來產生濾透水，具有逆滲透膜（RO膜）或是奈米過濾膜（NF膜），將原水分離成含雜質之濃縮水、與雜質已去除之濾透水。膜過濾裝置2，係和對膜過濾裝置2供給原水之供給管線L1、讓膜過濾裝置2所分離之濾透水流通之濾透水管線L2、讓膜過濾裝置2所分離之濃縮水之流通之濃縮水管線L3，相連接。濃縮水管線L3的下游側的部分，分歧成2條管線，亦即，讓濃縮水的一部分往外部排出之排水管線L4、讓其餘部分往供給管線L1回流之回流水管線L5。以下，為了方便說明，將濃縮水管線之中未分歧之上游側的部分簡稱為「濃縮水管線」，和下游側的部分做區別，但請注意，排水管線與回流水管線，都是讓來自膜過濾裝置的濃縮水流通之濃縮水管線的一部分。回流水管線L5，於其下游側，和供給管線L1之中後述加壓泵4的上游側相連接。此外，回流水管線L5，不和供給管線L1直接連接，而是和儲藏原水之原水槽（未圖示）相連接亦可。另外，回流水管線L5亦可省略，亦即，膜過濾裝置2所分離之濃縮水全部往外部排出亦可。Membrane filtration device 2 removes impurities in the raw water to produce filtered water. It has a reverse osmosis membrane (RO membrane) or a nanofiltration membrane (NF membrane) to separate the raw water into concentrated water containing impurities, and the impurities have been removed. Filter through the water. Membrane filtration device 2 is a supply line L1 that supplies raw water to the membrane filtration device 2, a filtration water line L2 that allows the permeable water separated by the membrane filtration device 2 to circulate, and concentrates the flow of concentrated water separated by the membrane filtration device 2 The water line L3 is connected. The downstream part of the concentrated water line L3 is divided into two lines, namely, a drain line L4 for draining part of the concentrated water to the outside, and a return water line L5 for returning the rest to the supply line L1. In the following, for the convenience of explanation, the part on the upstream side of the concentrated water pipeline that is not branched is referred to as the “concentrated water pipeline” for short, and is distinguished from the downstream part. Part of the concentrated water pipeline through which the concentrated water of the membrane filtration device circulates. The return water line L5 is connected to the upstream side of the pressure pump 4 described later in the supply line L1 on its downstream side. In addition, the return water line L5 is not directly connected to the supply line L1, but may be connected to a raw water tank (not shown) for storing raw water. In addition, the return water line L5 may be omitted, that is, all the concentrated water separated by the membrane filtration device 2 may be discharged to the outside.

供給管線L1，設有加壓泵4、用以將原水槽所儲藏之原水往膜過濾裝置2供給。加壓泵4，由變換器（未圖示）控制轉速，具有調整對於膜過濾裝置2的原水供給壓力之功能亦可。排水管線L4，設有閥門V1，用以調整流經排水管線L4之濃縮水的流量。回流水管線L5，設有閥門V2，用以調整流經排水管線L4之濃縮水與流經回流水管線L5之濃縮水的壓力平衡。The supply line L1 is provided with a pressure pump 4 for supplying the raw water stored in the raw water tank to the membrane filtration device 2. The pressure pump 4 may have a rotation speed controlled by an inverter (not shown), and may have a function of adjusting the pressure of the raw water supply to the membrane filtration device 2. The drain line L4 is equipped with a valve V1 to adjust the flow of concentrated water flowing through the drain line L4. The return line L5 is equipped with a valve V2 to adjust the pressure balance between the concentrated water flowing through the drain line L4 and the concentrated water flowing through the return line L5.

EDI裝置3，係同時進行藉由離子交換體之被處理水的去離子化（脫鹽）處理、與離子交換體的再生處理之裝置。EDI裝置3，經由濾透水管線L2來和膜過濾裝置2連接，受到作為被處理水的膜過濾裝置2所分離之濾透水的供給。EDI裝置3，係和讓來自EDI裝置3的處理水（去離子水）流通而往處理水槽或是使用端供給之處理水管線L6、讓來自EDI裝置3的濃縮水（以下，亦稱為「EDI濃縮水」）往外部排出之濃縮水排出管線L7，相連接。此外，EDI濃縮水，根據其水質，使一部分或是全部往供給管線L1或是原水槽回流亦可。另外，圖1雖未顯示，但EDI裝置3也將後述之電極水排出。The EDI device 3 is a device that simultaneously performs the deionization (desalination) treatment of the water to be treated by the ion exchanger and the regeneration treatment of the ion exchanger. The EDI device 3 is connected to the membrane filtration device 2 via the filtration water line L2, and is supplied with the filtered water separated by the membrane filtration device 2 as the water to be treated. The EDI device 3 is connected to the treated water line L6 that allows the treated water (deionized water) from the EDI device 3 to circulate and is supplied to the treated water tank or the user end, and allows the concentrated water from the EDI device 3 (hereinafter, also referred to as " EDI concentrated water") Concentrated water discharge line L7, which is discharged to the outside, is connected. In addition, according to the water quality of EDI concentrated water, part or all of it may be returned to the supply line L1 or the raw water tank. In addition, although not shown in FIG. 1, the EDI device 3 also discharges electrode water described later.

參照圖2，EDI裝置3，具有：具備陽極11之陽極室E1、具備陰極12之陰極室E2、位於陽極室E1與陰極室E2之間的脫鹽室D、配置於脫鹽室D兩側之一對濃縮室C1、C2。脫鹽室D，由陽極11側的陰離子交換膜a1與陰極12側的陽離子交換膜c1所區隔。一對濃縮室C1、C2，包含：隔著陰離子交換膜a1來和脫鹽室D鄰接之陽極側濃縮室C1、隔著陽離子交換膜c1來和脫鹽室D鄰接之陰極側濃縮室C2。陽極側濃縮室C1，隔著陽離子交換膜c2來和陽極室E1鄰接；陰極側濃縮室C2，隔著陰離子交換膜a2來和陰極室E2鄰接。2, the EDI device 3 has: an anode chamber E1 with an anode 11, a cathode chamber E2 with a cathode 12, a desalination chamber D located between the anode chamber E1 and the cathode chamber E2, and one of the two sides of the desalination chamber D To the concentration chamber C1, C2. The desalination chamber D is partitioned by the anion exchange membrane a1 on the anode 11 side and the cation exchange membrane c1 on the cathode 12 side. A pair of concentration chambers C1 and C2 includes an anode-side concentration chamber C1 adjacent to the desalination chamber D via an anion exchange membrane a1, and a cathode-side concentration chamber C2 adjacent to the desalination chamber D via a cation exchange membrane c1. The anode side concentration chamber C1 is adjacent to the anode chamber E1 via the cation exchange membrane c2; the cathode side concentration chamber C2 is adjacent to the cathode chamber E2 via the anion exchange membrane a2.

脫鹽室D，充填有陽離子交換體與陰離子交換體的至少其中一者，較佳者為，充填有陽離子交換體與陰離子交換體雙方。亦即，脫鹽室D，有陽離子交換體與陰離子交換體以所謂的混床形態或是多床形態充填係較佳的。作為陽離子交換體，可舉出陽離子交換樹脂、陽離子交換纖維、獨塊狀多孔質陽離子交換體等，最通用的陽離子交換樹脂較適合使用。作為陽離子交換體的種類，可舉出弱酸性陽離子交換體、強酸性陽離子交換體等。作為陰離子交換體，可舉出陰離子交換樹脂、陰離子交換纖維、獨塊狀多孔質陰離子交換體等，最通用的陰離子交換樹脂較適合使用。作為陰離子交換體的種類，可舉出弱鹽基性陰離子交換體、強鹽基性陰離子交換體等。The desalination chamber D is filled with at least one of a cation exchanger and an anion exchanger, and preferably, it is filled with both a cation exchanger and an anion exchanger. That is, the desalination chamber D is preferably filled with a cation exchanger and an anion exchanger in a so-called mixed bed form or a multi-bed form. Examples of cation exchangers include cation exchange resins, cation exchange fibers, monolithic porous cation exchangers, and the like. The most common cation exchange resins are suitable for use. As the kind of cation exchanger, a weakly acidic cation exchanger, a strongly acidic cation exchanger, etc. can be mentioned. Examples of anion exchangers include anion exchange resins, anion exchange fibers, monolithic porous anion exchangers, and the like. The most common anion exchange resins are suitable for use. As the kind of anion exchanger, a weakly based anion exchanger, a strong based anion exchanger, etc. are mentioned.

此外，陽極側濃縮室C1及陰極側濃縮室C2中，為了抑制EDI裝置3的電阻，分別充填離子交換體係較佳的。另外，陽極室E1及陰極室E2中，也為了抑制EDI裝置3的電阻，分別充填離子交換體等的導電性物質係較佳的。作為一例，陽極側濃縮室C1、陰極側濃縮室C2、及陰極室E2中，充填有陰離子交換體；陽極室E1中，充填有陽離子交換體。In addition, in the anode-side concentration chamber C1 and the cathode-side concentration chamber C2, in order to suppress the resistance of the EDI device 3, it is preferable to separately fill an ion exchange system. In addition, in order to suppress the electrical resistance of the EDI device 3 in the anode chamber E1 and the cathode chamber E2, it is preferable to respectively be filled with a conductive material such as an ion exchanger. As an example, the anode-side concentration chamber C1, the cathode-side concentration chamber C2, and the cathode chamber E2 are filled with an anion exchanger; the anode chamber E1 is filled with a cation exchanger.

來自膜過濾裝置2的濾透水管線L2複數（圖示例中為4個）分岐，分別和脫鹽室D、陽極側濃縮室C1、陰極側濃縮室C2、及陰極室E2相連接。脫鹽室D，於其下游側和處理水管線L6相連接。陽極側濃縮室C1及陰極側濃縮室C2形成並聯流路，於其下游側和濃縮水排出管線L7相連接。如此，來自膜過濾裝置2的濾透水，作為被處理水往脫鹽室D供給，作為濃縮室流入水往陽極側濃縮室C1及陰極側濃縮室C2供給。另外，陰極室E2係和陽極室E1形成串聯流路，從而，來自膜過濾裝置2的濾透水，作為電極室流入水從陰極室E2亦往陽極室E1供給，作為電極水往外部排出。The filtration water-permeable pipelines L2 from the membrane filtration device 2 are branched in plural (4 in the example in the figure) and are respectively connected to the desalination chamber D, the anode-side concentration chamber C1, the cathode-side concentration chamber C2, and the cathode chamber E2. The desalination chamber D is connected to the treated water pipeline L6 on its downstream side. The anode-side concentration chamber C1 and the cathode-side concentration chamber C2 form a parallel flow path, and are connected to the concentrated water discharge line L7 on the downstream side. In this way, the filtered water from the membrane filtration device 2 is supplied to the desalination chamber D as the water to be treated, and supplied to the anode-side concentration chamber C1 and the cathode-side concentration chamber C2 as the inflow water of the concentration chamber. In addition, the cathode chamber E2 and the anode chamber E1 form a series flow path, so that the filtered water from the membrane filter device 2 is supplied as electrode chamber inflow water from the cathode chamber E2 to the anode chamber E1, and is discharged to the outside as electrode water.

脫鹽室D，經由濾透水管線L2得到膜過濾裝置2之濾透水（被處理水）供給，濾透水中的離子成分，在通過脫鹽室D之際被去除。離子成分已去除之濾透水，作為處理水（去離子水），經由處理水管線L6往處理水槽或是使用端供給。此時，被脫鹽室D去除之離子成分，藉由對兩極11、12間施加直流電壓所產生之電位差，往脫鹽室D所鄰接之濃縮室C1、C2移動。具體上，陽離子成分，受陰極12側吸引，通過陽離子交換膜c1往陰極側濃縮室C2移動；陰離子成分，受陽極11側吸引，通過陰離子交換膜a1往陽極側濃縮室C1移動。如此往濃縮室C1、C2移動之離子成分，被納入濃縮室流入水，經由濃縮水排出管線L7往外部排出。另一方面，脫鹽室D中，水解離反應（水解離成氫離子與氫氧化物離子之反應）連續進行。氫離子，和吸附於陽離子交換體之陽離子成分交換；氫氧化物離子，和吸附於陰離子交換體之陰離子成分交換。如此，充填於脫鹽室D之陽離子交換體及陰離子交換體分別再生。In the desalination chamber D, the permeable water (water to be treated) of the membrane filtration device 2 is supplied through the permeable water line L2, and the ion components in the permeated water are removed when passing through the desalination chamber D. The filtered water from which the ion components have been removed is used as treated water (deionized water) and supplied to the treated water tank or the end of use via the treated water line L6. At this time, the ion components removed by the desalination chamber D move to the concentration chambers C1 and C2 adjacent to the desalination chamber D by the potential difference generated by applying a direct voltage between the two poles 11 and 12. Specifically, the cation components are attracted by the cathode 12 side and move to the cathode side concentration chamber C2 through the cation exchange membrane c1; the anion components are attracted by the anode 11 side and move to the anode side concentration chamber C1 through the anion exchange membrane a1. The ion components moved to the concentration chambers C1 and C2 are taken into the inflow water of the concentration chamber and discharged to the outside through the concentrated water discharge line L7. On the other hand, in the desalination chamber D, the hydrolysis reaction (the reaction between hydrolysis and ionization into hydrogen ions and hydroxide ions) proceeds continuously. The hydrogen ion exchanges with the cation component adsorbed on the cation exchanger; the hydroxide ion exchanges with the anion component adsorbed on the anion exchanger. In this way, the cation exchanger and the anion exchanger filled in the desalination chamber D are respectively regenerated.

此外，如開頭所述，EDI裝置3的圖示構成，只是一例而已。因應裝置的使用目的或用途、要求性能，來變更各室的構成（數量、配置等）或流路構成，或追加閥門或測量器等變更係可適當進行。例如，EDI裝置，具備2間以上的脫鹽室亦可。在此情形，脫鹽室與濃縮室，係隔著陽離子交換膜或是陰離子交換膜交互設置，最靠近陽極之濃縮室和陽極室鄰接，最靠近陰極之濃縮室和陰極室鄰接。另一方面，和電極室（陽極室或是陰極室）鄰接之濃縮室省略，讓電極室與脫鹽室鄰接，使電極室兼當濃縮室亦可。這種電極室兼當濃縮室之構成，不管脫鹽室的數量，都可適用。另外，脫鹽室，由中間離子交換膜（例如，陰離子交換膜或是陽離子交換膜的單一膜或雙極膜等）於直流電流的通電方向分割成2間小脫鹽室亦可。在此情形，2間小脫鹽室，形成串聯流路，陽極側的小脫鹽室至少充填有陰離子交換體；陰極側的小脫鹽室至少充填有陽離子交換體。往濃縮室的輸水方向和往脫鹽室的輸水方向相反亦可，一對濃縮室形成串聯流路亦可。甚至，濃縮室流入水，可為處理水的一部分，在脫鹽室區隔成2間小脫鹽室的情況下，亦可為被處理水往一方的小脫鹽室輸水所得之中間處理水的一部分。另外，電極室流入水先流入陽極室亦可，電極室形成並聯流路亦可。甚至，電極室流入水，可為處理水的一部分，在脫鹽室區隔成2間小脫鹽室的情況下，亦可為被處理水往一方的小脫鹽室輸水所得之中間處理水的一部分。In addition, as mentioned at the beginning, the illustrated configuration of the EDI device 3 is only an example. In accordance with the purpose of use, application, and required performance of the device, the configuration (number, arrangement, etc.) or flow path configuration of each chamber, or the addition of valves or measuring devices, can be changed as appropriate. For example, the EDI device may have two or more desalination rooms. In this case, the desalination chamber and the concentration chamber are alternately arranged via a cation exchange membrane or an anion exchange membrane. The concentration chamber closest to the anode is adjacent to the anode chamber, and the concentration chamber closest to the cathode is adjacent to the cathode chamber. On the other hand, the concentration chamber adjacent to the electrode chamber (anode chamber or cathode chamber) is omitted, and the electrode chamber is adjacent to the desalination chamber, so that the electrode chamber can also be used as a concentration chamber. This kind of electrode chamber doubles as a concentrating chamber, and it can be applied regardless of the number of desalination chambers. In addition, the desalination chamber may be divided into two small desalination chambers by an intermediate ion exchange membrane (for example, anion exchange membrane or a single membrane or bipolar membrane of cation exchange membrane, etc.) in the energizing direction of direct current. In this case, two small desalination chambers form a series flow path. The small desalination chamber on the anode side is filled with at least an anion exchanger; the small desalination chamber on the cathode side is filled with at least a cation exchanger. The direction of water delivery to the concentration chamber and the direction of water delivery to the desalination chamber may be opposite, or a pair of concentration chambers may form a series flow path. Moreover, the inflow water from the concentration chamber can be part of the treated water. In the case of the demineralization chamber divided into two small demineralization chambers, it can also be part of the intermediate treated water obtained by transferring the treated water to one of the small demineralization chambers. . In addition, the water flowing into the electrode chamber may first flow into the anode chamber, or the electrode chamber may form a parallel flow path. Even the inflow water from the electrode chamber can be part of the treated water. In the case of the demineralization chamber divided into two small demineralization chambers, it can also be a part of the intermediate treated water obtained by transferring the treated water to one of the small demineralization chambers. .

不過，上述的純水製造裝置1中，流經供給管線L1之原水，藉由供給管線L1所設之加壓泵4與濃縮水管線L3所設之閥門等壓力調整手段（未圖示），加壓至滲透壓以上的壓力，往膜過濾裝置2供給。往膜過濾裝置2供給之原水，利用逆滲透的原理分離成濾透水與濃縮水。因此，被膜過濾裝置2分離而流經濃縮水管線L3之濃縮水變得相較高壓。然而，現實情況是，此類濃縮水的壓力能，係在經由回流水管線L5使濃縮水往膜過濾裝置2的上游側回流的情況下所利用，但並未有效利用於其他用途，而被浪費掉。However, in the above-mentioned pure water production device 1, the raw water flowing through the supply line L1 is adjusted by pressure adjustment means (not shown) such as the pressure pump 4 provided in the supply line L1 and the valve provided in the concentrated water line L3. The pressure increased to a pressure equal to or higher than the osmotic pressure is supplied to the membrane filtration device 2. The raw water supplied to the membrane filtration device 2 is separated into filtered water and concentrated water using the principle of reverse osmosis. Therefore, the concentrated water which is separated by the membrane filtration device 2 and flows through the concentrated water line L3 becomes relatively high pressure. However, the reality is that the pressure energy of this type of concentrated water is used when the concentrated water is returned to the upstream side of the membrane filtration device 2 through the return line L5, but it is not effectively used for other purposes and is used. Wasted.

於是，本實施形態的純水製造裝置1，具有水力發電裝置5，用以將膜過濾裝置2所分離之濃縮水的壓力能作為電力回收。水力發電裝置5，設於使來自膜過濾裝置2的濃縮水流通之濃縮水管線L3，利用流經濃縮水管線L3之濃縮水進行發電，將所發電之電力往EDI裝置3供給。藉由這種水力發電裝置5，可將膜過濾裝置2所分離之濃縮水的壓力能利用於EDI裝置3，可使系統全體之能量效率提升。Therefore, the pure water production device 1 of the present embodiment has a hydroelectric power generation device 5 for recovering the pressure energy of the concentrated water separated by the membrane filtration device 2 as electric power. The hydroelectric power generation device 5 is provided in a concentrated water line L3 that circulates concentrated water from the membrane filtration device 2, and generates power using the concentrated water flowing through the concentrated water line L3, and supplies the generated power to the EDI device 3. With this kind of hydroelectric power generation device 5, the pressure energy of the concentrated water separated by the membrane filtration device 2 can be used in the EDI device 3, and the energy efficiency of the entire system can be improved.

水力發電裝置5，作為EDI裝置3的直流電源裝置的代替品使用亦可，或者是，作為此類直流電源裝置的電源而追加使用亦可。水力發電裝置5中，係和膜過濾裝置2的運轉連動，進行發電與對EDI裝置3的通電。因此，對於EDI裝置3的直流電源裝置，以代替方式或追加方式採用水力發電裝置5，使得配合膜過濾裝置2對EDI裝置3的輸水來進行通電，這樣的電源控制不需再進行，亦為其優點。此外，水力發電裝置5的發電量的變動較大的情況下，水力發電裝置5對EDI裝置3的通電，透過充電裝置或穩定化電源裝置進行亦可。The hydroelectric power generation device 5 may be used as a substitute for the direct current power supply device of the EDI device 3, or may be additionally used as a power source of such a direct current power supply device. In the hydroelectric power generation device 5, the operation of the membrane filtration device 2 is linked to power generation and the energization of the EDI device 3 is performed. Therefore, for the DC power supply device of the EDI device 3, the hydropower device 5 is used in an alternative or additional manner, so that the membrane filter device 2 is used to energize the water delivery of the EDI device 3. Such power control does not need to be carried out anymore, and For its advantages. In addition, when the amount of power generated by the hydroelectric power generation device 5 fluctuates significantly, the electric power supply of the water power generation device 5 to the EDI device 3 may be performed through a charging device or a stabilized power supply device.

水力發電裝置5的設置位置，只要是可利用濃縮水的水流來進行發電之位置，便不限於濃縮水管線L3上，例如，排水管線L4上或回流水管線L5上亦可。可是，為了回收更多的能量，水力發電裝置5的設置位置，在濃縮水的壓力最高、流量最大之位置係較佳的。亦即，如本實施形態，於濃縮水管線L3的下游側，排水管線L4與回流水管線L5相連接的情況下，水力發電裝置5，設於濃縮水管線L3係較佳的。The installation position of the hydroelectric power generating device 5 is not limited to the concentrated water line L3 as long as the concentrated water flow can be used for power generation. For example, it may be on the drain line L4 or the return water line L5. However, in order to recover more energy, the installation position of the hydroelectric power generation device 5 is preferably at a position where the pressure of the concentrated water is the highest and the flow rate is the largest. That is, as in this embodiment, when the drain line L4 is connected to the return water line L5 on the downstream side of the concentrated water line L3, it is preferable that the hydroelectric power generation device 5 is provided in the concentrated water line L3.

只要可將濃縮水的壓力能（位能或動能）變換成電能，水力發電裝置5的構成並無特別限制，可因應濃縮水的流量範圍或所要求的發電量，使用適合的常見的水力發電機。其中，具有葉輪，承受流經濃縮水管線L3的濃縮水的水流而旋轉，係較佳的，特別是，由葉輪的轉速來檢測濃縮水的流量係較佳的。使用這種水力發電機，就無需於濃縮水管線L3設置流量計。此外，在此情形，葉輪的轉速，可從EDI裝置3的運轉電流（流經兩極11、12間的直流電流）或是運轉電壓（施加於兩極11、12間的直流電壓）的測量值反算出。另外，水力發電機的種類並無特別限制，直流發電機以外，也可使用交流發電機。可是，交流發電機，作為EDI裝置3之直流電源裝置的電源使用的情況下，也可和直流電源裝置直接連接，但請注意，作為直流電源裝置的代替品使用的情況下，必須透過交流/直流變換裝置來和EDI裝置3連接。As long as the pressure energy (potential energy or kinetic energy) of the concentrated water can be converted into electrical energy, the structure of the hydroelectric power generation device 5 is not particularly limited. It can be used according to the flow rate range of the concentrated water or the required amount of power generation. Motor. Among them, it is preferable to have an impeller that rotates under the water flow of the concentrated water flowing through the concentrated water line L3. In particular, it is preferable to detect the flow rate of the concentrated water by the rotation speed of the impeller. With this kind of hydroelectric generator, there is no need to install a flow meter in the concentrated water line L3. In addition, in this case, the speed of the impeller can be reversed from the measured value of the operating current (direct current flowing between the two poles 11 and 12) or the operating voltage (the direct current voltage applied between the two poles 11 and 12) of the EDI device 3 Figure out. In addition, there are no particular restrictions on the type of hydroelectric generator, and AC generators can also be used in addition to DC generators. However, when the AC generator is used as the power supply of the DC power supply device of EDI device 3, it can also be directly connected to the DC power supply device. The DC converter is connected to the EDI device 3.

構成水力發電裝置5之水力發電機的數量並不限於1台，多台水力發電機串聯配置於濃縮水管線L3亦可。在此情況下，其等的電性連接可為串聯亦可為並聯，或者是將串聯與並聯組合亦可。使用多台水力發電機的情況下，為了回收越多的能量，各個水力發電機壓力損失較小係較佳的，因此，可以配置越多的水力發電機。另一方面，使用多台水力發電機，便可因應需要來調整發電量（對EDI裝置3的供給電力量），亦為其優點。以下，參照圖3，針對這種水力發電裝置5的構成例進行說明。圖3，係本實施形態的水力發電裝置的一構成例示之概略圖。The number of hydroelectric generators constituting the hydroelectric power generation device 5 is not limited to one, and multiple hydroelectric generators may be arranged in series in the concentrated water line L3. In this case, their electrical connections can be series or parallel, or a combination of series and parallel. In the case of using multiple hydroelectric generators, in order to recover more energy, it is better for the pressure loss of each hydroelectric generator to be smaller. Therefore, more hydroelectric generators can be configured. On the other hand, the use of multiple hydroelectric generators can adjust the amount of power generation (the amount of power supplied to the EDI device 3) according to needs, which is also an advantage. Hereinafter, referring to FIG. 3, a configuration example of such a hydroelectric power generation device 5 will be described. Fig. 3 is a schematic diagram showing an example of the structure of the hydroelectric power generation device of the present embodiment.

圖3所示之水力發電裝置5，具有：串聯配置於濃縮水管線L3之2台水力發電機51、52、使2台水力發電機51、52之中第2水力發電機52旁通之方式來和濃縮水管線L3連接之旁通管線L31。2台水力發電機51、52，係電性並聯連接，作為EDI裝置3的直流電源來和EDI裝置3相連接。旁通管線L31設有閥門V3，濃縮水管線L3也設有閥門V4、V5。閥門V4，設於濃縮水管線L3與旁通管線L31的上游側連接部的下游側；閥門V5，設於濃縮水管線L3與旁通管線L31的下游側連接部的上游側。將旁通管線L31的閥門V3開放，濃縮水管線L3的閥門V4、V5封閉，則可使流經濃縮水管線L3之濃縮水只往第1水力發電機51流通。因此，僅以第1水力發電機51進行發電，所以可降低對EDI裝置3的供給電流。另外，將旁通管線L31的閥門V3封閉，濃縮水管線L3的閥門V4、V5開放，則可使流經濃縮水管線L3之濃縮水往第1水力發電機51與第2水力發電機52雙方流通。因此，以第1水力發電機51與第2水力發電機52雙方進行發電，所以可提高對EDI裝置3的供給電流。The hydroelectric power generation device 5 shown in Fig. 3 has two hydroelectric generators 51, 52 arranged in series on the concentrated water line L3, and a method of bypassing the second hydroelectric generator 52 among the two hydroelectric generators 51, 52 The bypass line L31 connected to the concentrated water line L3. Two hydroelectric generators 51 and 52 are electrically connected in parallel, and are connected to the EDI device 3 as the DC power supply of the EDI device 3. The bypass line L31 is provided with a valve V3, and the concentrated water line L3 is also provided with valves V4 and V5. The valve V4 is provided on the downstream side of the upstream side connection part of the concentrated water line L3 and the bypass line L31; the valve V5 is provided on the upstream side of the downstream side connection part of the concentrated water line L3 and the bypass line L31. By opening the valve V3 of the bypass line L31 and closing the valves V4 and V5 of the concentrated water line L3, the concentrated water flowing through the concentrated water line L3 can only circulate to the first hydroelectric generator 51. Therefore, only the first hydraulic generator 51 is used for power generation, so the current supplied to the EDI device 3 can be reduced. In addition, by closing the valve V3 of the bypass line L31 and opening the valves V4 and V5 of the concentrated water line L3, the concentrated water flowing through the concentrated water line L3 can be sent to both the first hydroelectric generator 51 and the second hydroelectric generator 52 Circulation. Therefore, both the first hydraulic generator 51 and the second hydraulic generator 52 perform power generation, so the current supplied to the EDI device 3 can be increased.

另外，圖3所示之水力發電裝置5，具有控制部（未圖示），依據EDI裝置3的運轉電流，來執行上述的2種發電模式的切換。一般而言，EDI裝置3中，因應對於EDI裝置3通電之電量來進行離子去除，但根據被處理水的水溫或離子組成的變化，會讓EDI裝置3的電阻變動。若EDI裝置3的電阻升高，則應去除離子往濃縮室移動所必要的電流往EDI裝置3供給，需要更多的電力。因此，圖3所示之水力發電裝置5中，因應EDI裝置3的電阻的變動，進行上述的發電模式的切換，調整水力發電裝置5對EDI裝置3的供給電流。結果，能維持EDI裝置3所必要之電流的運轉。例如，EDI裝置3的電阻較低之狀態中，僅以第1水力發電機51進行發電之方式，將濃縮水往旁通管線L31輸水，但若EDI裝置3的電阻上昇而運轉電流降低，則停止對旁通管線L31輸水。結果，以第1水力發電機51與第2水力發電機52雙方進行發電，可讓對EDI裝置3的供給電流增加，來維持EDI裝置3的定電流運轉。In addition, the hydroelectric power generation device 5 shown in FIG. 3 has a control unit (not shown), and performs switching of the above-mentioned two power generation modes in accordance with the operating current of the EDI device 3. Generally speaking, in the EDI device 3, ion removal is performed according to the amount of electricity supplied to the EDI device 3. However, the resistance of the EDI device 3 will vary according to changes in the water temperature or ion composition of the water to be treated. If the resistance of the EDI device 3 increases, the current necessary to move the ions to the concentration chamber should be removed and supplied to the EDI device 3, and more power is required. Therefore, in the hydroelectric power generation device 5 shown in FIG. 3, the above-mentioned power generation mode is switched in response to the change in the resistance of the EDI device 3, and the supply current of the hydraulic power generation device 5 to the EDI device 3 is adjusted. As a result, the operation of the current necessary for the EDI device 3 can be maintained. For example, in a state where the resistance of the EDI device 3 is low, only the first hydroelectric generator 51 is used for power generation, and the concentrated water is sent to the bypass line L31. However, if the resistance of the EDI device 3 increases and the operating current decreases, Then stop water delivery to the bypass line L31. As a result, both the first hydraulic generator 51 and the second hydraulic generator 52 perform power generation, and the current supplied to the EDI device 3 can be increased to maintain the constant current operation of the EDI device 3.

上述的發電模式的切換，依據對膜過濾裝置2供給之原水或是EDI裝置3所製造之去離子水的水質來進行亦可。亦即，在原水的水質惡化，或EDI裝置3的處理水質降低的情況下，為了增加EDI裝置3的運轉電流來提升處理性能，便停止對旁通管線L31輸水，以第1水力發電機51與第2水力發電機52雙方進行發電亦可。The switching of the above-mentioned power generation mode may be performed according to the water quality of the raw water supplied to the membrane filtration device 2 or the deionized water produced by the EDI device 3. That is, when the quality of the raw water deteriorates or the quality of the treated water of the EDI device 3 decreases, in order to increase the operating current of the EDI device 3 to improve the treatment performance, the water supply to the bypass line L31 is stopped, and the first hydroelectric generator Both the 51 and the second hydroelectric generator 52 may generate electricity.

圖3中，例示了構成水力發電裝置5之水力發電機的數量為2台的情況，但水力發電機的數量為3台以上亦可。水力發電機的數量為3台以上的情況下，旁通管線，以旁通2台以上的水力發電機之方式，來和濃縮水管線L3相連接亦可。或者是，2條以上的旁通管線和濃縮水管線L3相連接亦可，在此情況下，各旁通管線，將各不相同數量的水力發電機旁通亦可。此外，水力發電裝置5由多台水力發電機所構成的情況下，彼此可為相同構成，亦可為相異構成，可因應濃縮水的流量範圍或所要求之發電量，將各種構成的水力發電機適當地組合使用。In FIG. 3, the case where the number of hydroelectric generators constituting the hydroelectric power generation device 5 is two is exemplified, but the number of hydroelectric generators may be three or more. When the number of hydroelectric generators is 3 or more, the bypass pipeline can be connected to the concentrated water pipeline L3 by bypassing 2 or more hydroelectric generators. Alternatively, two or more bypass pipelines may be connected to the concentrated water pipeline L3. In this case, each bypass pipeline may bypass different numbers of hydroelectric generators. In addition, when the hydropower device 5 is composed of multiple hydropower generators, they can have the same configuration or different configurations. The various configurations of hydraulic power can be combined according to the flow range of the concentrated water or the required amount of power generation. The generators are appropriately combined and used.

（第2實施形態） 圖4，係本發明的第2實施形態所屬純水製造裝置的概略構成圖。以下，針對與第1實施形態同樣的構成，於圖式賦予相同符號以省略其說明，僅說明與第1實施形態相異之構成。(Second Embodiment) Fig. 4 is a schematic configuration diagram of a pure water production apparatus belonging to a second embodiment of the present invention. Hereinafter, with respect to the same configuration as the first embodiment, the same reference numerals are given to the drawings to omit the description thereof, and only the configuration that is different from the first embodiment will be described.

本實施形態，係第1實施形態的變形例，除了第1實施形態的EDI裝置（第1EDI裝置）3以外，又在其下游側設置1個EDI裝置（第2EDI裝置）6，這點與第1實施形態不同。第2EDI裝置6，具有與第1EDI裝置3基本上相同的構成。亦即，雖未圖示出，但第2EDI裝置6，具有：與第1EDI裝置3的脫鹽室D同樣的脫鹽室、與第1EDI裝置3的一對濃縮室C1、C2同樣的一對濃縮室。第2EDI裝置6，將第1EDI裝置3的一對濃縮室C1、C2所流出之水，亦即來自第1EDI裝置3的EDI濃縮水加以處理，將所處理之水送回供給管線L1。從而，第2EDI裝置6的脫鹽室，於其上游側，和第1EDI裝置3的濃縮水排出管線L7相連接；於其下游側，和將上述處理水往供給管線L1回流之處理水送回管線L8相連接。此外，根據第2EDI裝置6的處理水質，處理水送回管線L8，亦可和濾透水管線L2相連接，而非供給管線L1。另外，第2EDI裝置6，也和將來自第2EDI裝置6的EDI濃縮水往外部排出之濃縮水排出管線L9相連接。This embodiment is a modification of the first embodiment. In addition to the EDI device (first EDI device) 3 of the first embodiment, an EDI device (second EDI device) 6 is installed on the downstream side. 1 The embodiment is different. The second EDI device 6 has basically the same structure as the first EDI device 3. That is, although not shown in the figure, the second EDI device 6 has the same desalination chamber as the desalination chamber D of the first EDI device 3, and a pair of concentration chambers similar to the pair of concentration chambers C1 and C2 of the first EDI device 3 . The second EDI device 6 treats the water flowing out of the pair of concentration chambers C1 and C2 of the first EDI device 3, that is, the EDI concentrated water from the first EDI device 3, and sends the treated water back to the supply line L1. Therefore, the desalination chamber of the second EDI device 6 is connected to the concentrated water discharge line L7 of the first EDI device 3 on its upstream side, and is connected to the treated water return line that returns the above-mentioned treated water to the supply line L1 on its downstream side. L8 is connected. In addition, according to the treated water quality of the second EDI device 6, the treated water returning to the line L8 may also be connected to the permeable water line L2 instead of the supply line L1. In addition, the second EDI device 6 is also connected to a concentrated water discharge line L9 that discharges the EDI concentrated water from the second EDI device 6 to the outside.

第2EDI裝置6，和用以製造純水之第1EDI裝置3相比，較不要求處理性能，所以電源控制也較不要求精度。從而，如本實施形態般具備2個EDI裝置3、6之純水製造裝置1中，要求更穩定的電源控制之第1EDI裝置3，使用通常的直流電源裝置係較佳的；水力發電裝置5，作為第2EDI裝置6的直流電源裝置使用係較佳的。可是，根據水力發電裝置5的發電量，自水力發電裝置5透過充電裝置或穩定化電源裝置也對第1EDI裝置3進行電力的供給亦可。特別是，水力發電裝置5由多台水力發電機所構成的情況下（參照圖3），對於2個EDI裝置3、6從各不相同的水力發電機供給電力亦可。Compared with the first EDI device 3 for producing pure water, the second EDI device 6 requires less processing performance, so power control also requires less precision. Therefore, in the pure water production device 1 equipped with two EDI devices 3 and 6 as in the present embodiment, the first EDI device 3 that requires more stable power supply control is preferably a normal DC power supply device; the hydraulic power generation device 5 It is preferable to use it as a DC power supply device of the second EDI device 6. However, depending on the amount of power generated by the hydroelectric power generation device 5, the first EDI device 3 may also be supplied with electric power from the water power generation device 5 through a charging device or a stabilized power supply device. In particular, when the hydroelectric power generation device 5 is composed of a plurality of hydropower generators (see FIG. 3), the two EDI devices 3 and 6 may be supplied with electric power from different hydropower generators.

此外，2個EDI裝置3、6的連接形態，並不限於圖4所示之形態，例如，雖未圖示出，但2個EDI裝置3、6串聯連接，將膜過濾裝置2所供給之濾透水依序處理亦可。亦即，第2EDI裝置6，將第1EDI裝置3的脫鹽室D所流出之水（第1EDI裝置3所製造之去離子水）加以處理，將該處理水往處理水槽或是使用端供給亦可。在此情形，來自水力發電裝置5的電力供給，可對2個EDI裝置3、6任一者進行，亦可對其雙方進行。In addition, the connection form of the two EDI devices 3, 6 is not limited to the form shown in Fig. 4. For example, although not shown, the two EDI devices 3, 6 are connected in series, and the membrane filtration device 2 is supplied The filtered water can be processed in order. That is, the second EDI device 6 treats the water flowing out of the desalination chamber D of the first EDI device 3 (the deionized water produced by the first EDI device 3), and the treated water may be supplied to the treated water tank or the end of use. . In this case, the power supply from the hydroelectric power generation device 5 may be performed to either of the two EDI devices 3, 6, or both of them.

（第3實施形態） 圖5，係本發明的第3實施形態所屬純水製造裝置的概略構成圖。以下，針對與上述實施形態同樣的構成，於圖式賦予相同符號以省略其說明，僅說明與上述實施形態相異之構成。(Third Embodiment) Fig. 5 is a schematic configuration diagram of a pure water production device according to a third embodiment of the present invention. Hereinafter, with regard to the same configuration as the above-mentioned embodiment, the same reference numerals are given to the drawings to omit the description thereof, and only the configuration that is different from the above-mentioned embodiment will be described.

本實施形態，係第1實施形態的變形例，除了第1實施形態的膜過濾裝置（第1膜過濾裝置）2以外，又在其下游側再設置另一膜過濾裝置（第2膜過濾裝置）7，這點與第1實施形態不同。第2膜過濾裝置7，與第1膜過濾裝置2同樣具有RO膜或是NF膜，透過濾透水管線（第1濾透水管線）L2來和第1膜過濾裝置2相連接。亦即，第2膜過濾裝置7，於第1膜過濾裝置2的下游側和第1膜過濾裝置2串聯連接，接收作為被處理水的第1膜過濾裝置2所分離之濾透水的供給。另外，第2膜過濾裝置7，係和讓第2膜過濾裝置7所分離之濾透水流通之第2濾透水管線L10相連接；第2濾透水管線L10，和EDI裝置3相連接。因此，本實施形態中，和第1實施形態相比，可產生更良好水質的濾透水，往EDI裝置3供給。This embodiment is a modification of the first embodiment. In addition to the membrane filtration device (first membrane filtration device) 2 of the first embodiment, another membrane filtration device (second membrane filtration device) is installed on the downstream side thereof. ) 7. This point is different from the first embodiment. The second membrane filtration device 7 has an RO membrane or an NF membrane similarly to the first membrane filtration device 2, and is connected to the first membrane filtration device 2 through a filtration permeable line (first filtration permeable line) L2. That is, the second membrane filtration device 7 is connected in series with the first membrane filtration device 2 on the downstream side of the first membrane filtration device 2 and receives the supply of filtered water separated by the first membrane filtration device 2 as the water to be treated. In addition, the second membrane filtration device 7 is connected to a second filtration permeable line L10 through which the filtered water separated by the second membrane filtration device 7 circulates; the second filtration permeable line L10 is connected to the EDI device 3. Therefore, in this embodiment, compared with the first embodiment, filtered water with better water quality can be produced and supplied to the EDI device 3.

第2膜過濾裝置7，係和讓第2膜過濾裝置7所分離之濃縮水流通之第2濃縮水管線L11相連接。第2膜過濾裝置7，為了將來自第1膜過濾裝置2的濾透水再分離成濾透水與濃縮水，從水質的觀點來看，並不一定要將第2膜過濾裝置7的濃縮水往外部排出。因此，第2濃縮水管線L11，從省水的觀點來看，為了使第2膜過濾裝置7所分離之濃縮水全部往供給管線L1回流，就在加壓泵4的上游側和供給管線L1相連接。或者是，第2濃縮水管線L11，不和供給管線L1直接連接，而是和設於供給管線L1之原水槽（未圖示）相連接亦可。此外，第2濃縮水管線L11，在清洗第2膜過濾裝置7的RO膜或是NF膜的情況下，和將來自第2膜過濾裝置7的濃縮水一部分或是全部往外部排出之排水管線相連接亦可。The second membrane filtration device 7 is connected to a second concentrated water line L11 through which concentrated water separated by the second membrane filtration device 7 flows. The second membrane filtration device 7 separates the filtered water from the first membrane filtration device 2 into filtered water and concentrated water. From the viewpoint of water quality, it is not necessary to transfer the concentrated water of the second membrane filtration device 7 to External discharge. Therefore, the second concentrated water line L11 is located on the upstream side of the pressurizing pump 4 and the supply line L1 in order to return all the concentrated water separated by the second membrane filtration device 7 to the supply line L1 from the viewpoint of water saving. Connected. Alternatively, the second concentrated water line L11 may not be directly connected to the supply line L1, but may be connected to a raw water tank (not shown) provided in the supply line L1. In addition, the second concentrated water line L11 is a drain line that discharges part or all of the concentrated water from the second membrane filter device 7 to the outside when cleaning the RO membrane or the NF membrane of the second membrane filter device 7 It can also be connected.

水力發電裝置5，雖設於和第1膜過濾裝置2連接之第1濃縮水管線L3，但水力發電裝置5的設置位置並不限於此，例如，第2濃縮水管線L11上亦可。可是，本實施形態中，必須以1個加壓泵4對2個膜過濾裝置2、7供給原水，所以對第1膜過濾裝置2的被處理水（原水）的供給壓力，比對第2膜過濾裝置7的被處理水（來自第1膜過濾裝置2的濾透水）的供給壓力更大。為此，來自第1膜過濾裝置2的濃縮水的壓力，比來自第2膜過濾裝置7的濃縮水的壓力更大。因此，水力發電裝置5，在可期待較高發電量這點來看，設於和第1膜過濾裝置2連接之第1濃縮水管線L3係較佳的。Although the hydroelectric power generation device 5 is provided in the first concentrated water line L3 connected to the first membrane filtration device 2, the installation position of the hydropower generation device 5 is not limited to this. For example, it may be on the second concentrated water line L11. However, in this embodiment, it is necessary to use one pressure pump 4 to supply raw water to the two membrane filtration devices 2, 7. Therefore, the supply pressure of the treated water (raw water) of the first membrane filtration device 2 is compared with that of the second membrane filtration device 2. The supply pressure of the water to be treated (filtered water from the first membrane filtration device 2) of the membrane filtration device 7 is higher. For this reason, the pressure of the concentrated water from the first membrane filtration device 2 is higher than the pressure of the concentrated water from the second membrane filtration device 7. Therefore, the hydroelectric power generation device 5 is preferably provided in the first concentrated water line L3 connected to the first membrane filtration device 2 from the viewpoint that a higher power generation amount can be expected.

本實施形態中，2個膜過濾裝置2、7串聯連接，來自第1膜過濾裝置2的濾透水往第2膜過濾裝置7供給，但2個膜過濾裝置2、7的連接形態並不限於這種形態。例如，2個膜過濾裝置（RO膜或是NF膜）2、7的一次側（原水及濃縮水流通側）串聯連接，二次側（濾透水流通側）並聯連接亦可。亦即，來自第1膜過濾裝置2的濃縮水往第2膜過濾裝置7供給，來自第1膜過濾裝置2的濾透水與來自第2膜過濾裝置7的濾透水往EDI裝置3供給亦可。在這種的情況下，水力發電裝置5，設於讓更高壓的濃縮水流通之第1濃縮水管線L3係較佳的。In this embodiment, the two membrane filtration devices 2, 7 are connected in series, and the filtered water from the first membrane filtration device 2 is supplied to the second membrane filtration device 7. However, the connection form of the two membrane filtration devices 2, 7 is not limited to This form. For example, two membrane filtration devices (RO membrane or NF membrane) 2 and 7 are connected in series on the primary side (raw water and concentrated water flow side), and connected in parallel on the secondary side (filtered water flow side). That is, the concentrated water from the first membrane filter device 2 may be supplied to the second membrane filter device 7, and the filtered water from the first membrane filter device 2 and the filtered water from the second membrane filter device 7 may be supplied to the EDI device 3. . In this case, it is preferable that the hydroelectric power generation device 5 is provided in the first concentrated water line L3 through which higher-pressure concentrated water circulates.

（第4實施形態） 圖6，係本發明的第4實施形態所屬純水製造裝置的概略構成圖。以下，針對與上述實施形態同樣的構成，於圖式賦予相同符號以省略其說明，僅說明與上述實施形態相異之構成。(Fourth Embodiment) Fig. 6 is a schematic configuration diagram of a pure water production apparatus according to a fourth embodiment of the present invention. Hereinafter, with regard to the same configuration as the above-mentioned embodiment, the same reference numerals are given to the drawings to omit the description thereof, and only the configuration that is different from the above-mentioned embodiment will be described.

本實施形態，係第1實施形態的變形例，追加設置了藥液注入裝置8與除氣裝置9，水力發電裝置5作為藥液注入裝置8與除氣裝置9各自的電源來發揮功能，這點與第1實施形態不同。換言之，本實施形態，水力發電裝置5所發電之電力分別往藥液注入裝置8與除氣裝置9供給，這點與第1實施形態不同。可是，根據水力發電裝置5的發電量，所發電之電力，僅往藥液注入裝置8與除氣裝置9的一方供給亦可，或者是，除了藥液注入裝置8與除氣裝置9以外，也往EDI裝置3供給亦可。This embodiment is a modification of the first embodiment. The liquid chemical injection device 8 and the degassing device 9 are additionally provided, and the hydroelectric power generation device 5 functions as a power source for each of the chemical liquid injection device 8 and the degassing device 9. The point is different from the first embodiment. In other words, this embodiment is different from the first embodiment in that the electric power generated by the hydroelectric power generation device 5 is supplied to the chemical liquid injection device 8 and the degassing device 9 respectively. However, depending on the amount of electricity generated by the hydroelectric power generation device 5, the generated electricity may be supplied to only one of the chemical liquid injection device 8 and the degassing device 9, or, in addition to the chemical liquid injection device 8 and the degassing device 9, It may also be supplied to the EDI device 3.

藥液注入裝置8，設於膜過濾裝置2的上游側，對原水添加防垢劑或黏泥控制劑等的藥液。藥液注入裝置8，具有：儲藏藥液之藥液槽21；透過藥液供給管線L12來和供給管線L1連接，將藥液槽21所儲藏之藥液注入供給管線L1之注藥泵22。水力發電裝置5所發電之電力往注藥泵22供給，從而，藥液注入裝置8中，和膜過濾裝置2的運轉連動，對原水進行藥液添加。此外，藥液的添加位置，只要是膜過濾裝置2的上游側，並不限於圖示之位置，例如，也可以是供給管線L1與回流水管線L5的連接部的下游側。另外，所添加之藥液的種類，除了上述的防垢劑或黏泥控制劑以外，亦可為pH調整劑或還原劑。The chemical liquid injection device 8 is provided on the upstream side of the membrane filtration device 2 and adds chemical liquid such as an anti-scaling agent or a slime control agent to the raw water. The liquid medicine injection device 8 has a liquid medicine tank 21 storing liquid medicine, and a medicine injection pump 22 that is connected to the supply line L1 through the liquid medicine supply line L12 and injects the liquid medicine stored in the medicine liquid tank 21 into the supply line L1. The electric power generated by the hydroelectric power generation device 5 is supplied to the chemical injection pump 22, so that the chemical liquid injection device 8 interlocks with the operation of the membrane filter device 2 to add chemical liquid to the raw water. The addition position of the chemical solution is not limited to the position shown in the figure as long as it is the upstream side of the membrane filtration device 2. For example, it may be the downstream side of the connection part of the supply line L1 and the return water line L5. In addition, the type of chemical solution added may be a pH adjuster or a reducing agent in addition to the aforementioned anti-scaling agent or slime control agent.

除氣裝置9，設於膜過濾裝置2的下游側的濾透水管線L2，將溶存於來自膜過濾裝置2的濾透水之二氧化碳或氧等氣體去除。除氣裝置9的構成並無特別限制，可因應要去除氣體的種類，使用適合的常見的除氣裝置。作為此類除氣裝置，例如，可舉出膜除氣裝置、脫碳酸塔等。膜除氣裝置，係對除氣膜的一次側輸送被處理水，並且藉由真空泵將除氣膜的二次側減壓，使被處理水中的溶存氧從除氣膜的一次側往二次側濾透而去除之裝置。另外，脫碳酸塔，係對內部所充填之充填材料從上方噴灑被處理水，並且藉由鼓風機從下方導入空氣，使被處理水與空氣在充填材料的表面氣液接觸，使得被處理水中的溶存二氧化碳在空氣中消散而去除之裝置。水力發電裝置5所發電之電力，在除氣裝置9為膜除氣裝置的情況下，往真空泵供給；在除氣裝置9為脫碳酸塔的情況下，往鼓風機供給。從而，除氣裝置9中，和膜過濾裝置2的運轉連動來進行除氣處理。此外，除氣裝置9的設置位置並不限於圖示之位置，例如，亦可為膜過濾裝置2的上游側。The degassing device 9 is provided in the permeable water line L2 on the downstream side of the membrane filtration device 2 and removes gases such as carbon dioxide or oxygen dissolved in the permeable water from the membrane filtration device 2. The structure of the degassing device 9 is not particularly limited, and a suitable common degassing device can be used according to the type of gas to be removed. As such a degassing device, for example, a membrane degassing device, a decarbonation tower, etc. can be cited. Membrane degassing device transports the treated water to the primary side of the degassing membrane, and depressurizes the secondary side of the degassing membrane with a vacuum pump, so that the dissolved oxygen in the treated water is transferred from the primary side of the degassing membrane to the secondary It is a device for side filtration and removal. In addition, the decarbonation tower sprays the water to be treated from above on the filling material filled inside, and introduces air from below by a blower, so that the treated water and air are in vapor-liquid contact on the surface of the filling material, making the water to be treated A device that dissipates dissolved carbon dioxide in the air and removes it. The electric power generated by the hydroelectric power generation device 5 is supplied to a vacuum pump when the degassing device 9 is a membrane degassing device; when the degassing device 9 is a decarbonation tower, it is supplied to a blower. Therefore, in the deaeration device 9, the deaeration process is performed in conjunction with the operation of the membrane filtration device 2. In addition, the installation position of the deaeration device 9 is not limited to the position shown in the figure, and may be, for example, the upstream side of the membrane filtration device 2.

如本實施形態般的藥液注入裝置或除氣裝置的設置，不只對應第1實施形態，也可對應於第2實施形態或第3實施形態，乃是無須待言的。在此情形，藥液注入裝置或除氣裝置的設置位置並無特別限定，可因應添加藥液的種類或要去除氣體的種類，在適當位置設置藥液注入裝置或除氣裝置。例如，第3實施形態的情況下，如圖5所示，2個膜過濾裝置2、7串聯連接之構成中，藥液注入裝置，設置於對來自第1膜過濾裝置2的濾透水添加藥液之位置亦可。另一方面，作為第3實施形態的變形例，如上述般，2個膜過濾裝置2、7的一次側串聯連接，二次側並聯連接之構成中，藥液注入裝置，設置於對來自第1膜過濾裝置2的濃縮水添加藥液之位置亦可。The installation of the chemical liquid injection device or degassing device as in this embodiment does not only correspond to the first embodiment, but can also correspond to the second embodiment or the third embodiment, and it is needless to say. In this case, the installation location of the liquid chemical injection device or degassing device is not particularly limited, and the liquid chemical injection device or degassing device can be installed at an appropriate position according to the type of chemical liquid added or the type of gas to be removed. For example, in the case of the third embodiment, as shown in FIG. 5, in a configuration in which two membrane filtration devices 2, 7 are connected in series, a chemical injection device is provided to add a chemical to the filtered water from the first membrane filtration device 2. The position of the liquid is also possible. On the other hand, as a modification of the third embodiment, as described above, the two membrane filtration devices 2 and 7 are connected in series on the primary side and connected in parallel on the secondary side. 1 Membrane filtration device 2 Concentrated water can be added to the position of the liquid medicine.

（實施例） 接著，舉出具體的實施例，針對本發明的效果進行說明。(Example) Next, specific examples are given to describe the effects of the present invention.

作為一實施例，使用圖1所示之構成的純水製造裝置，進行500小時的運轉，測量膜過濾裝置與電氣式去離子水製造裝置各自之中，被處理水的水質（被處理水導電率）與處理水的水質（處理水導電率）。並根據以下的公式（1），分別算出膜過濾裝置中的脫鹽率、電氣式脫離子水製造裝置中的脫鹽率、系統全體中的脫鹽率。 脫鹽率（%）= （1-（處理水導電率/被處理水導電率））×100 （1） 在此，膜過濾裝置中的脫鹽率，係由原水之導電率（被處理水導電率）與來自膜過濾裝置的濾透水之導電率（處理水導電率）所算出。電氣式脫離子水製造裝置中的脫鹽率，係由來自膜過濾裝置的濾透水之導電率（被處理水導電率）與來自電氣式去離子水製造裝置的去離子水之導電率（處理水導電率）所算出。系統全體中的脫鹽率，係由原水之導電率（被處理水導電率）與來自電氣式去離子水製造裝置的去離子水之導電率（處理水導電率）所算出。As an example, the pure water production device with the configuration shown in Fig. 1 was used for 500 hours of operation to measure the water quality of the water to be treated in each of the membrane filtration device and the electrical deionized water production device (the water to be treated is conductive Rate) and the water quality of the treated water (conductivity of the treated water). According to the following formula (1), the desalination rate in the membrane filtration device, the desalination rate in the electrical deionized water production device, and the desalination rate in the entire system are calculated. Desalination rate (%)= (1-(Conductivity of treated water/Conductivity of treated water))×100 (1) Here, the desalination rate in the membrane filtration device is calculated from the conductivity of the raw water (conductivity of the treated water) and the conductivity of the filtered water from the membrane filtration device (the conductivity of the treated water). The desalination rate in the electrical deionized water production device is determined by the conductivity of the filtered water from the membrane filter device (the conductivity of the treated water) and the electrical conductivity of the deionized water from the electrical deionized water production device (the treated water). Conductivity). The desalination rate in the entire system is calculated from the conductivity of the raw water (conductivity of the treated water) and the conductivity of the deionized water from the electrical deionized water production device (conductivity of the treated water).

作為膜過濾裝置係使用RO膜；作為電氣式去離子水製造裝置，使用具有圖2所示之構成，具體上，具備4間脫鹽室；脫鹽室、濃縮室、及電極室各室的尺寸為10cm×10cm×1cm。電氣式去離子水製造裝置的各脫鹽室，有陽離子交換樹脂與陰離子交換樹脂以混床形態充填；各濃縮室，有陰離子交換樹脂充填。作為被處理水（原水），使用導電率為200μS/cm左右的水，令對膜過濾裝置供給之原水的流量為330L/h。令電氣式去離子水製造裝置的處理流量（流入處理室之被處理水的流量）、濃縮室流入水的流量、及電極室流入水的流量，分別為40L/h、25L/h、及15L/h。此時，自膜過濾裝置往濃縮水管線流通之濃縮水的流量及壓力，分別為250L/h及0.53MPa。As the membrane filtration device, the RO membrane is used; as the electric deionized water production device, the structure shown in Figure 2 is used. Specifically, it has 4 desalination chambers; the dimensions of the desalination chamber, the concentration chamber, and the electrode chamber are 10cm×10cm×1cm. Each desalination chamber of the electric deionized water manufacturing device is filled with cation exchange resin and anion exchange resin in a mixed bed form; each concentration chamber is filled with anion exchange resin. As the water to be treated (raw water), water with a conductivity of about 200μS/cm was used, and the flow rate of the raw water supplied to the membrane filtration device was 330L/h. Make the treatment flow rate of the electrical deionized water production device (the flow rate of the treated water flowing into the treatment chamber), the flow rate of the inflow water in the concentration chamber, and the flow rate of the inflow water in the electrode chamber to be 40L/h, 25L/h, and 15L, respectively /h. At this time, the flow rate and pressure of the concentrated water flowing from the membrane filtration device to the concentrated water pipeline are 250L/h and 0.53MPa, respectively.

作為水力發電裝置，用7台水力發電機（型號「DB-2689」，Foshan Shunde Zhongjiang Energy Saving Electronics社製）空間地串聯連接，電性並聯連接。並將水力發電裝置所發電之電力作為直流電源裝置的代替品，往電氣式去離子水製造裝置供給。此時的電氣式去離子水製造裝置的運轉電流為0.1A，運轉電壓（供給電壓）為6V。另外，水力發電裝置全體的壓力損失為0.13MPa。As a hydropower device, seven hydropower generators (model "DB-2689", manufactured by Foshan Shunde Zhongjiang Energy Saving Electronics) are spatially connected in series and electrically connected in parallel. The electric power generated by the hydroelectric power generation device is used as a substitute for the DC power supply device and supplied to the electric deionized water production device. The operating current of the electric deionized water production device at this time was 0.1A, and the operating voltage (supply voltage) was 6V. In addition, the pressure loss of the entire hydroelectric power generation device was 0.13 MPa.

測量原水之導電率、來自膜過濾裝置的濾透水之導電率、及來自電氣式去離子水製造裝置的去離子水之導電率，分別為198μS/cm、4.72μS/cm、及0.15μS/cm。並從該等導電率，藉由上述公式（1），算出膜過濾裝置中的脫鹽率、電氣式去離子水製造裝置中的脫鹽率、及系統全體中的脫鹽率，分別為97.6%、96.8%、及99.9%。從而，確認了不用常用的直流電源裝置，也可得到所求的水質。Measure the conductivity of the raw water, the conductivity of the filtered water from the membrane filtration device, and the conductivity of the deionized water from the electrical deionized water manufacturing device. They are 198μS/cm, 4.72μS/cm, and 0.15μS/cm, respectively . And from these conductivity, using the above formula (1), the desalination rate in the membrane filtration device, the desalination rate in the electrical deionized water production device, and the desalination rate in the entire system are calculated, respectively, 97.6% and 96.8 %, and 99.9%. Thus, it was confirmed that the desired water quality can be obtained without using a commonly used DC power supply device.

另外，作為其他實施例，脫鹽室的數量為1，除了這點以外，使用與上述的實施例同樣的電氣式去離子水製造裝置，因應各濃縮室是否有陰離子交換樹脂充填，電氣式去離子水製造裝置的運轉電壓會如何變化，進行調查。具體上，各濃縮室有陰離子交換樹脂充填的情況下與未充填的情況下，雙方以同一條件（作為被處理水，使用導電率為3.6μS/cm的水（來自膜過濾裝置的濾透水），運轉電流設定為0.1A之條件）進行運轉，將各自的運轉電壓做比較。結果，確認了前者的運轉電壓，為後者的運轉電壓的約1/7。從而，於電氣式去離子水製造裝置的各濃縮室充填陰離子交換樹脂（離子交換體），係牽涉到運轉電壓的降低，所以在水力發電裝置的發電量不太大的情況下被認為是特別有效。In addition, as another example, the number of desalination chambers is 1. Except for this point, the same electrical deionized water production device as in the above-mentioned example is used. Depending on whether or not each concentration chamber is filled with anion exchange resin, the electrical deionization Investigate how the operating voltage of the water production device will change. Specifically, when each concentration chamber is filled with anion exchange resin and when it is not filled, the same conditions are used for both of them (as the water to be treated, use water with a conductivity of 3.6μS/cm (filtered water from the membrane filtration device) , The operating current is set to 0.1A) to operate and compare the respective operating voltages. As a result, it was confirmed that the operating voltage of the former was about 1/7 of the operating voltage of the latter. Therefore, filling anion exchange resin (ion exchanger) in each concentration chamber of the electric deionized water production device involves a decrease in the operating voltage. Therefore, it is considered to be particularly special when the power generation capacity of the hydroelectric power generation device is not too large. efficient.

1:純水製造裝置 2:膜過濾裝置（第1膜過濾裝置） 3:EDI裝置（第1EDI裝置） 4:加壓泵 5:水力發電裝置 51:第1水力發電機 52:第2水力發電機 6:第2EDI裝置 7:第2膜過濾裝置 8:藥液注入裝置 9:除氣裝置 11:陽極 12:陰極 21:藥液槽 22:注藥泵 a1,a2:陰離子交換膜 C1,C2:濃縮室 c1,c2:陽離子交換膜 D:脫鹽室 E1:陽極室 E2:陰極室 L1:供給管線 L2:濾透水管線（第1濾透水管線） L3:濃縮水管線（第1濃縮水管線） L31:旁通管線 L4:排水管線 L5:回流水管線 L6:處理水管線 L7,L9:濃縮水排出管線 L8:處理水送回管線 L10:第2濾透水管線 L11:第2濃縮水管線 L12:藥液供給管線 V1~V5:閥門1: Pure water production equipment 2: Membrane filtration device (the first membrane filtration device) 3: EDI device (first EDI device) 4: Boosting pump 5: Hydroelectric power plant 51: The first hydroelectric generator 52: The second hydroelectric generator 6: 2nd EDI device 7: The second membrane filtration device 8: Liquid medicine injection device 9: Degassing device 11: anode 12: Cathode 21: Medicine tank 22: Injection pump a1, a2: anion exchange membrane C1, C2: Concentration room c1, c2: cation exchange membrane D: Desalination room E1: anode chamber E2: Cathode chamber L1: Supply line L2: Water filtration pipeline (1st filtration water pipeline) L3: Concentrated water pipeline (the first concentrated water pipeline) L31: Bypass pipeline L4: Drainage line L5: Return water pipeline L6: Treatment water pipeline L7, L9: Concentrated water discharge pipeline L8: The treated water is sent back to the pipeline L10: 2nd filtration and permeable pipeline L11: The second concentrated water pipeline L12: Liquid medicine supply line V1~V5: Valve

圖1係本發明的第1實施形態所屬純水製造裝置的概略構成圖。 圖2係本發明的第1實施形態所屬電氣式去離子水製造裝置的概略構成圖。 圖3係本發明的第1實施形態所屬水力發電裝置的一構成例示之概略圖。 圖4係本發明的第2實施形態所屬純水製造裝置的概略構成圖。 圖5係本發明的第3實施形態所屬純水製造裝置的概略構成圖。 圖6係本發明的第4實施形態所屬純水製造裝置的概略構成圖。Fig. 1 is a schematic configuration diagram of a pure water production apparatus according to the first embodiment of the present invention. Fig. 2 is a schematic configuration diagram of an electric deionized water production apparatus according to the first embodiment of the present invention. Fig. 3 is a schematic diagram showing an example of the configuration of the hydroelectric power generation device according to the first embodiment of the present invention. Fig. 4 is a schematic configuration diagram of a pure water production apparatus belonging to a second embodiment of the present invention. Fig. 5 is a schematic configuration diagram of a pure water production apparatus according to a third embodiment of the present invention. Fig. 6 is a schematic configuration diagram of a pure water production apparatus according to a fourth embodiment of the present invention.

1:純水製造裝置 1: Pure water production equipment

2:膜過濾裝置(第1膜過濾裝置) 2: Membrane filtration device (the first membrane filtration device)

3:EDI裝置(第1EDI裝置) 3: EDI device (first EDI device)

4:加壓泵 4: Boosting pump

5:水力發電裝置 5: Hydroelectric power plant

L1:供給管線 L1: Supply line

L2:濾透水管線(第1濾透水管線) L2: Water filtration pipeline (1st filtration water pipeline)

L3:濃縮水管線(第1濃縮水管線) L3: Concentrated water line (the first concentrated water line)

L4:排水管線 L4: Drainage line

L5:回流水管線 L5: Return water pipeline

L6:處理水管線 L6: Treatment water pipeline

L7:濃縮水排出管線 L7: Concentrated water discharge pipeline

V1~V2:閥門 V1~V2: Valve

Claims (9)

一種純水製造裝置，依序處理由工業用水、井水或自來水所成之原水，以製造純水，具有：膜過濾裝置，具有將被處理水分離成濾透水與濃縮水之逆滲透膜或是奈米過濾膜；電氣式去離子水製造裝置，處理該濾透水，並具有：脫鹽室，位於陽極與陰極之間，由該陽極側的陰離子交換膜與該陰極側的陽離子交換膜所區隔，充填有陽離子交換體與陰離子交換體的至少其中一者；及一對濃縮室，隔著該陰離子交換膜及該陽離子交換膜而配置於該脫鹽室的兩側，且分別充填有離子交換體；及水力發電裝置，設於讓來自該膜過濾裝置的該濃縮水流通之濃縮水管線，利用流經該濃縮水管線之該濃縮水的水流進行發電，將所發電之電力供給至該電氣式去離子水製造裝置，其功能係作為該電氣式去離子水製造裝置的電源裝置，或是作為該電源裝置的電源。 A pure water production device that sequentially processes raw water formed from industrial water, well water or tap water to produce pure water. It has a membrane filtration device that has a reverse osmosis membrane or a reverse osmosis membrane that separates the treated water into filtered water and concentrated water. It is a nanofiltration membrane; an electrical deionized water manufacturing device that processes the filtered water and has: a desalination chamber, located between the anode and the cathode, and is zoned by the anion exchange membrane on the anode side and the cation exchange membrane on the cathode side A partition is filled with at least one of a cation exchanger and an anion exchanger; and a pair of concentration chambers are arranged on both sides of the desalination chamber via the anion exchange membrane and the cation exchange membrane, and are respectively filled with ion exchange Body; and a hydroelectric power generation device, which is provided in a concentrated water pipeline that allows the concentrated water from the membrane filtration device to circulate, uses the concentrated water flowing through the concentrated water pipeline to generate electricity, and supplies the generated electricity to the electrical The function of the deionized water manufacturing device is as the power supply device of the electric deionized water manufacturing device, or as the power supply of the power supply device. 如請求項1的純水製造裝置，其中，該電氣式去離子水製造裝置的該脫鹽室和該膜過濾裝置相連接，以處理來自該膜過濾裝置的該濾透水。 The pure water production device of claim 1, wherein the desalination chamber of the electric deionized water production device is connected to the membrane filtration device to process the filtered water from the membrane filtration device. 如請求項1的純水製造裝置，其中，更具有：有別於該電氣式去離子水製造裝置之另一電氣式去離子水製造裝置； 該另一電氣式去離子水製造裝置具有：脫鹽室，位於陽極與陰極之間，由該陽極側的陰離子交換膜與該陰極側的陽離子交換膜所區隔，充填有陽離子交換體與陰離子交換體的至少其中一者；及一對濃縮室，隔著該陰離子交換膜及該陽離子交換膜而配置於該脫鹽室的兩側；該另一電氣式去離子水製造裝置的該脫鹽室，係和該膜過濾裝置相連接，以處理來自該膜過濾裝置的該濾透水；該電氣式去離子水製造裝置的該脫鹽室，係和該另一電氣式去離子水製造裝置相連接，以處理從該另一電氣式去離子水製造裝置的該一對濃縮室流出的水與從該脫鹽室流出的水其中之一。 The pure water manufacturing device of claim 1, which further has: another electric deionized water manufacturing device that is different from the electric deionized water manufacturing device; The other electrical deionized water production device has: a desalination chamber, located between the anode and the cathode, separated by an anion exchange membrane on the anode side and a cation exchange membrane on the cathode side, and filled with cation exchangers and anion exchanges At least one of the body; and a pair of concentration chambers, which are arranged on both sides of the desalination chamber via the anion exchange membrane and the cation exchange membrane; the desalination chamber of the other electric deionized water production device is Connected with the membrane filtration device to process the filtered water from the membrane filtration device; the desalination chamber of the electrical deionized water production device is connected to the other electrical deionized water production device for processing One of the water flowing out of the pair of concentration chambers of the other electric deionized water manufacturing device and the water flowing out of the desalination chamber. 如請求項1至3中任1項的純水製造裝置，其中，該水力發電裝置，具有串聯配置於該濃縮水管線之多台水力發電機。 The pure water production device of any one of claims 1 to 3, wherein the hydroelectric power generation device has a plurality of hydroelectric generators arranged in series on the concentrated water pipeline. 如請求項4的純水製造裝置，其中，該水力發電裝置，具有：旁通管線，將該多台水力發電機之中至少1台發電機旁通；及控制部，切換以下兩種發電模式：依據該被處理水或是該電氣式去離子水製造裝置所製造之去離子水的水質、與該電氣式去離子水製造裝置的運轉電流其中之一，使該濃縮水往該旁通管線流動，以讓該至少1台水力發電機以外之發電機進行發電的發電模式；以及，使該濃縮水不往該旁通管線流動，而用該多台水力發電機進行發電的發電模式。 For example, the pure water production device of claim 4, wherein the hydroelectric power generation device has: a bypass pipeline to bypass at least one of the multiple hydroelectric power generators; and a control unit to switch the following two power generation modes : According to one of the water quality of the water to be treated or the deionized water produced by the electric deionized water production device, and the operating current of the electric deionized water production device, the concentrated water is directed to the bypass pipeline A power generation mode in which a generator other than the at least one hydro-electric generator is used for power generation; and a power generation mode in which the concentrated water does not flow to the bypass pipeline and the multiple hydro-generators are used for power generation. 如請求項1至3中任1項的純水製造裝置，其中， 該濃縮水管線的下游側的部分，分歧成：排水管線，將該濃縮水的一部分往外部排出；及回流水管線，使該濃縮水的其餘部分，回流至對該膜過濾裝置供給該被處理水的供給管線；該水力發電裝置，設於該濃縮水管線之中未分歧成該排水管線與該回流水管線之上游側的部分。 Such as the pure water manufacturing device of any one of claims 1 to 3, in which: The part on the downstream side of the concentrated water pipeline is divided into: a drainage pipeline to discharge part of the concentrated water to the outside; and a return water pipeline to return the remaining part of the concentrated water to the membrane filtration device to supply the processed The water supply pipeline; the hydroelectric power generation device is arranged in the concentrated water pipeline that is not divided into the upstream part of the drainage pipeline and the return water pipeline. 如請求項1至3中任1項的純水製造裝置，其中，該水力發電裝置，具有承受該濃縮水的水流而旋轉之葉輪，由該葉輪的轉速來檢測該濃縮水的流量。 The pure water production device according to any one of claims 1 to 3, wherein the hydroelectric power generation device has an impeller that rotates under the water flow of the concentrated water, and the flow rate of the concentrated water is detected by the rotation speed of the impeller. 如請求項1至3中任1項的純水製造裝置，其中，更具有：另一膜過濾裝置，在該膜過濾裝置的下游側和該膜過濾裝置相連接，具有逆滲透膜或是奈米過濾膜。 The pure water production device according to any one of claims 1 to 3, which further has: another membrane filtration device, connected to the membrane filtration device on the downstream side of the membrane filtration device, having a reverse osmosis membrane or Meter filter membrane. 一種純水製造裝置的運轉方法，該純水製造裝置依序處理由工業用水、井水或自來水所成之原水，以製造純水，具有：膜過濾裝置，具有將被處理水分離成濾透水與濃縮水之逆滲透膜或是奈米過濾膜；及電氣式去離子水製造裝置，處理該濾透水，並具有：脫鹽室，位於陽極與陰極之間，由該陽極側的陰離子交換膜與該陰極側的陽離子交換膜所區隔，充填有陽離子交換體與陰離子交換體的至少其中一者；及一對濃縮室，隔著該陰離子交換膜及該陽離子交換膜而配置於該脫鹽室的兩側，且分別充填有離子交換體；該純水製造裝置的運轉方法包含以下步驟： 利用來自該膜過濾裝置的該濃縮水的水流進行發電，將所發電之電力供給至該電氣式去離子水製造裝置。 A method for operating a pure water production device that sequentially processes raw water made from industrial water, well water or tap water to produce pure water. It has a membrane filtration device that separates the treated water into filtered water A reverse osmosis membrane or a nanofiltration membrane with concentrated water; and an electrical deionized water manufacturing device that processes the filtered water and has: a desalination chamber located between the anode and the cathode, and the anion exchange membrane on the anode side and the The cation exchange membrane on the cathode side is partitioned and filled with at least one of a cation exchanger and an anion exchanger; and a pair of concentration chambers are arranged in the desalination chamber via the anion exchange membrane and the cation exchange membrane Both sides are respectively filled with ion exchangers; the operation method of the pure water production device includes the following steps: The flow of the concentrated water from the membrane filtration device is used to generate electricity, and the generated electricity is supplied to the electric deionized water production device.
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