KR20100051280A - Condensate polishing system and method thereof - Google Patents

Condensate polishing system and method thereof Download PDF

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KR20100051280A
KR20100051280A KR1020080110366A KR20080110366A KR20100051280A KR 20100051280 A KR20100051280 A KR 20100051280A KR 1020080110366 A KR1020080110366 A KR 1020080110366A KR 20080110366 A KR20080110366 A KR 20080110366A KR 20100051280 A KR20100051280 A KR 20100051280A
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concentrated water
storage tank
electric deionizer
water storage
electric
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KR101063926B1 (en
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우민하
이시창
이규철
이상학
정지웅
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한국중부발전(주)
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    • 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
    • C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
    • C02F1/4695—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis electrodeionisation
    • 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
    • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
    • 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
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/02—Temperature
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/03—Pressure

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Engineering & Computer Science (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
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  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

PURPOSE: A seroperitoneum demineralization system and a method thereof are provided to block cross contamination and waste water generated by regeneration of ion-exchange resin in existing seroperitoneum demineralization equipment and generation, and to eliminate a plurality of loss reasons fundamentally. CONSTITUTION: A seroperitoneum demineralization system comprises the following: a micro filter(10) which filters and eliminates un-dissolvent granularity foreign materials contained in t seroperitoneum; an enriched water storage tank(30); an electrodeionization device(20) discharging an enriched water to an enriched water storage tank; a booster pump(40) boosting pressure of the enriched water offered to the electrodeionization apparatus; and an energy recovering device(50) increasing pressure of the enriched water.

Description

복수탈염시스템 및 복수탈염방법{Condensate polishing system and method thereof}Condensate Polishing System and Method

본 발명은 복수 중에 포함된 금속산화물을 포함하는 비용존성 입상 오염물 및 이온성 오염물을 제거하는 복수탈염시스템 및 복수탈염방법에 관한 것으로, 정밀여과기와 전기탈이온장치를 이용하여 복수를 처리함으로써 기존 혼상식 이온교환수지법을 사용한 복수탈염설비의 단점으로 지적되어온 약품재생에 의한 교차오염 및 다량의 폐수발생을 최소화할 수 있도록 수성되었으며, 특히 기존의 전기탈이온장치의 운전방식과는 달리 농축실 유입수를 희석실 유입수와 완전히 분리하여 운전함으로써 농축실로 공급되는 복수의 손실을 방지할 수 있는 전기탈이온장치를 이용한 복수탈염시스템 및 복수탈염방법에 관한 것이다.The present invention relates to a plural desalting system and a plural desalting method for removing non-independent granular contaminants and ionic contaminants including metal oxides contained in plural. The present invention relates to a conventional horn by treating a plurality using a fine filter and an electric deionizer. It was made to minimize cross-contamination and large amount of waste water caused by chemical regeneration, which has been pointed out as a disadvantage of multiple desalination facilities using common-sense ion exchange resin method. The present invention relates to a multiple desalination system and a plurality of desalination methods using an electric deionization apparatus capable of preventing a plurality of losses supplied to a concentration chamber by completely separating and operating the dilution chamber from influent of the dilution chamber.

현재 일반적으로 사용되고 있는 복수탈염방법은 혼상식 이온교환수지법을 사용하여 복수중의 이온을 포함한 오염성분을 제거하는 방법으로 정기적으로 이온교환수지를 화학약품을 이용하여 재생해주어야 한다. 양이온 교환수지는 염산이나 황 산으로 재생하고, 음이온교환수지는 가성소다로 재생한다.In general, the multiple desalination method currently used is a method of removing contaminants including ions in a plurality of phases using a mixed phase ion exchange resin method, and the ion exchange resin must be regularly recycled using chemicals. The cation exchange resin is regenerated with hydrochloric acid or sulfuric acid, and the anion exchange resin is regenerated with caustic soda.

이러한 종래의 복수탈염설비의 이온교환수지를 재생하는 방법은 탑외 재생형 방식으로 교차오염을 방지하기 위해 혼합되어 있는 이온교환수지를 분리하여 재생하며 그 방법에 따라 여려 방식이 있다.The conventional method for regenerating the ion exchange resin of the multiple desalination plant separates and regenerates the mixed ion exchange resin in order to prevent cross-contamination in an out-of-column regeneration type.

예컨대, 이온교환수지를 분리하는 방법은 역세과정을 통해 비중이 가벼운 음이온교환수지를 비중차를 이용하여 탑 상부로 보내고, 무거운 양이온교환수지는 탑 하부로 침강시켜 분리시키는 것인데, 이러한 단순한 수지분리방법은 양이온교환수지와 음이온교환수지로 어느정도 분리시킬 수 있으나, 양 이종수지간의 경계층 주위에 형성되는 혼합수지층을 완벽하게 분리시킬 수 없는 한계를 가지고 있다. 그 이유는 복수탈염설비를 운영하는 동안 자연적으로 발생하는 파쇄수지에 기인하는데, 상기한 수지분리기술이 수지의 비중뿐만 아니라 수지입자의 크기에도 의존하기 때문에 파쇄된 양이온 교환수지는 양이온교환수지층의 상부에 파쇄된 음이온 교환수지층은 양이온교환수지층의 하부에 밀집 분포하여 혼합층을 형상하기 때문이다. 따라서 역세과정에 세심한 주위를 기울인다 할지라도 음이온교환수지를 별도의 독립된 탑으로 이송할 때 이종수지 경계층에 형성된 혼합층으로 인해 양이온교환수지가 음이온교환수지와 함께 필연적으로 휩쓸려 누출의 원인이 되고, 반대로 양이온교환수지층에 잔존하는 음이온교환수지는 염소이온이나 설페이트이온 등이 누출원이 되었다.For example, the method of separating the ion exchange resin is to send anion exchange resin, which is light in specific gravity, to the top of the tower by using a specific gravity difference, and to separate the heavy cation exchange resin by sedimenting the bottom of the tower. Although it can be separated into the cation exchange resin and the anion exchange resin to some extent, there is a limit that can not completely separate the mixed resin layer formed around the boundary layer between the two heterogeneous resins. The reason is due to the crushing resin which occurs naturally during the operation of the multiple desalination plant. Since the resin separation technique depends on the specific gravity of the resin as well as the size of the resin particles, the crushed cation exchange resin is used in the cation exchange resin layer. This is because the anion exchange resin layer crushed in the upper portion is densely distributed in the lower portion of the cation exchange resin layer to form a mixed layer. Therefore, even if you pay close attention to the backwashing process, the cation exchange resin is inevitably swept along with the anion exchange resin when the anion exchange resin is transferred to a separate tower, causing leakage. The anion exchange resin remaining in the exchange resin layer was a source of leakage such as chlorine ions or sulfate ions.

상기한 바와 같은 기존 복수탈염설비의 단점을 극복하기 위하여 전기탈이온장치를 이용한 복수탈염설비가 선출원된 "전기순수장치를 이용한 복수탈염장치 및 방법"(출원번호 :10-2005-34454) 및 "순환펌프가 없는 전기식 순수장치를 이용한 복수탈염장치 및 방법"(출원번호 :10-2005-94502)에서 한단계 진보하여 혼상식 복수탈염설비의 단점인 교차오염과 이온교환수지재생에 따른 재생폐액발생을 최소화하고자 본 발명이 출원되었다. 기존의 전기탈이온장치를 이용한 복수탈염설비는 복수가 희석실과 농축실로 동시에 유입되기 때문에 장치로 유입되는 복수 중 일부가 농축실과 전극수로 빠져나가 복수의 손실이 발생할 뿐만 아니라 이들 복수의 손실을 최소화시키기 위해 농축수를 2차 전지탈이온장치로 재처리하여 복수 인입부로 순환시켜야만 하기 때문에 장치 및 운전이 다소 복잡해지는 문제가 있다."Multiple desalination apparatus and method using electric pure water apparatus" (application number: 10-2005-34454) and the application of multiple desalination facilities using an electric deionization apparatus in order to overcome the disadvantages of the existing multiple desalination facilities as described above and " Multi-desalting apparatus and method using electric pure water device without circulation pump "(Application No.: 10-2005-94502), take a step further to prevent the generation of regeneration waste liquid by cross-contamination and ion exchange resin regeneration, which are disadvantages of mixed bed desalination facilities. The present invention has been filed for minimization. As the multiple desalination equipment using the existing electric deionizer is introduced into the dilution chamber and the concentration chamber at the same time, some of the plurality flowing into the apparatus exit the concentration chamber and the number of electrodes, so that not only a plurality of losses occur but also a plurality of losses are minimized. In order to reprocess the concentrated water with a secondary battery deionizer and circulate to a plurality of inlets, there is a problem in that the apparatus and operation are somewhat complicated.

본 발명의 목적은 정밀여과기와 전기탈이온장치를 이용하여 복수 중의 이온성분을 제거함으로써 기존 복수탈염설비에서 이온교환수지를 재생함으로 발생되는 교차오염 및 폐액발생을 막을 수 있는 복수탈염시스템 및 처리방법을 제공하는 데 있다.An object of the present invention is a multiple desalination system and treatment method capable of preventing cross-contamination and waste fluid generated by regenerating an ion exchange resin in an existing multiple desalination facility by removing a plurality of ionic components using a precision filter and an electric deionizer. To provide.

본 발명의 다른 목적은 농축실 유입수로 복수를 사용하지 않고 유입 복수는 희석실을 통해 처리한 후 전량 계통으로 공급하며, 농축실은 농축수저장탱크 및 승압펌프를 이용하여 별도로 순환하는 방법을 택함으로써 복수의 손실 원인을 원천 제거함은 물론 장치를 단순화할 수 있는 복수탈염시스템 및 처리방법을 제공하는 데 있다.Another object of the present invention is to use a plurality of inlet condensate as the inlet of the concentration chamber is treated through the dilution chamber and then supplied to the whole amount system, the concentration chamber by using a method of circulating separately using the concentrated water storage tank and boost pump It is to provide a multiple desalination system and treatment method that can simplify the apparatus as well as remove the plurality of causes of loss.

복수를 제공받아 유입된 복수 중에 함유되어 있는 비용존성 입상 이물질을 여과하여 제거하는 정밀여과기(10)와; 내부에 농축수가 저장되는 농축수저장탱크(30)와; 상기 정밀여과기(10)로부터 복수를 제공받고, 농축수저장탱크로부터 농축수를 제공받아 복수 중의 이온성분을 제거하여 배출하고, 농축수는 다시 농축수저장탱크로 배출하는 전기탈이온장치(20)와; 상기 전기탈이온장치(20)로 공급되는 농축수를 승압시키는 농축수승압펌프(40)와, 상기 농축수승압펌프(40)에서 전기탈이온장치(20)로 공급되는 농축수와 전기탈이온장치(20)에서 배출되는 농축수를 제 공받아 전기탈이온장치(20)로 공급되는 농축수를 더욱 승압시키는 에너지회수장치(50)를 포함하는 것을 특징으로 한다.A precision filter 10 for filtering and removing non-dependent granular foreign matters contained in a plurality of inflows received with a plurality; A concentrated water storage tank 30 in which the concentrated water is stored; Receiving a plurality from the precision filter 10, receives the concentrated water from the concentrated water storage tank to remove and discharge the ionic components in the plurality, the concentrated water is discharged back to the concentrated water storage tank 20 Wow; The concentrated water boosting pump 40 for boosting the concentrated water supplied to the electric deionizer 20, and the concentrated water and the electric deionized water supplied from the concentrated water boosting pump 40 to the electric deionizer 20. It is characterized in that it comprises an energy recovery device 50 for further boosting the concentrated water supplied to the electric deionizer 20 by receiving the concentrated water discharged from the device 20.

바람직하게, 상기 전기탈이온장치(20)는 복수 또는 농축수를 수용하여 전기적으로 탈이온시킬 수 있도록 전기탈이온장치(20)에 전기를 공급하는 정류기(21)를 구비하는 것을 특징으로 하다.Preferably, the electric deionizer 20 is characterized in that it comprises a rectifier 21 for supplying electricity to the electric deionizer 20 to receive a plurality or concentrated water to electrically deionized.

바람직하게, 농축수저장탱크(30)의 농축수 수질을 조절하기 위해 농축수정화장치(80)를 더 포함하는 것을 특징으로 한다.Preferably, it is characterized in that it further comprises a concentrated water purification device 80 to control the quality of the concentrated water of the concentrated water storage tank (30).

바람직하게, 상기 농축수저장탱크(30)의 농축수 수온을 조절하기 위해 열교환기(60)가 구비되는 것을 특징으로 한다.Preferably, the heat exchanger 60 is provided to adjust the concentrated water temperature of the concentrated water storage tank (30).

바람직하게, 전기탈이온장치(20)의 전극수 배출배관에 연결되어 배출되는 전극수를 수용하여 탈기하여 농축수저장탱크(30)로 순환시키는 전극수탈기장치(70)를 더 포함하는 것을 특징으로 한다.Preferably, it is characterized in that it further comprises an electrode degassing device 70 for receiving and degassing the electrode water discharged connected to the electrode water discharge pipe of the electric deionizer 20 to circulate to the concentrated water storage tank (30). .

이상에서 살펴본 바와 같이, 본 발명에 따른 복수탈염시스템은 전기탈이온장치를 이용하여 복수 중의 이온성분을 제거함으로써 기존 복수탈염설비에서 이온교환수지를 재생함으로 발생되는 교차오염 및 폐액발생을 막을 수 있는 장점이 있다.As described above, the multiple desalination system according to the present invention can prevent cross-contamination and waste solution generated by regenerating the ion exchange resin in the existing multiple desalination facility by removing the ionic component in the plurality using the electric deionization apparatus. There is an advantage.

또한, 전기탈이온장치의 운전 방식을 기존의 방법과 달리하여 농축실 유입수로 복수를 사용하지 않고 유입 복수는 희석실을 통해 처리한 후 전량 계통으로 공급하며, 농축실은 농축수저장탱크 및 농축수승압펌프를 이용하여 별도로 순환하는 방법을 택함으로써 복수의 손실 원인을 원천 제거함은 물론 장치를 단순화할 수 있다는 장점을 가지고 있다. In addition, unlike the conventional method, the operation method of the electric deionizer is different from the conventional method, and the inflow plural is processed through the dilution chamber and supplied to the whole system after the inflow plural, and the enrichment chamber is the concentrated water storage tank and the concentrated water. By employing a separate circulation method using a boost pump, the source of the plurality of losses can be eliminated as well as the device can be simplified.

또한 전기탈이온장치의 농축수의 수온 및 수질을 임으로 조절할 수 있어 운전 효율을 향상시키는 효과가 있다.In addition, since the temperature and water quality of the concentrated water of the electric deionizer can be arbitrarily adjusted, there is an effect of improving operation efficiency.

이하, 첨부된 도면을 참조하여 본 발명에 따른 복수탈염시스템에 대하여 상세히 설명한다. Hereinafter, with reference to the accompanying drawings will be described in detail a plurality of desalination system according to the present invention.

본 발명의 복수탈염시스템은 정밀여과기(10), 전기탈이온장치(20), 농축수저장탱크(30), 농축수승압펌프(40), 에너지회수장치(50), 전극수탈기장치(70)를 구비한다.The multiple desalination system of the present invention is a precision filter 10, electric deionizer 20, concentrated water storage tank 30, concentrated water boost pump 40, energy recovery device 50, electrode dehydrator 70 ).

정밀여과기(10)는 복수를 제공받아 유입된 복수 중에 함유되어 있는 금속산화물 등의 비용존성 입상 이물질을 여과하여 오염원을 제거한다. 정밀여과기(10)는 공극의 크기가 1마이크로미터 이하의 카트리지타입 모듈이거나 또는 중곡사막 모듈을 적용하여 사용하는 것이 바람직하며, 특히 0.1~0.2마이크로미터의 공극을 갖는 중공사 분리막이 바람직하다. 정밀여과기에 의해 입상 이물질 등의 오염원이 제거되면 설비의 오염이나 손상을 방지할 수 있다.The microfilter 10 is provided with a plurality of particles to remove contaminants by filtering non-dependent granular foreign substances such as metal oxides contained in the introduced plurality. The microfiltration unit 10 is preferably a cartridge type module having a pore size of 1 micrometer or less, or by applying a hollow fiber membrane module, and in particular, a hollow fiber separator having a pore of 0.1 to 0.2 micrometer is preferable. If the contaminant such as granular foreign matter is removed by the precision filter, it is possible to prevent the contamination or damage of the equipment.

전기탈이온장치(20)는 정밀여과기(10)의 배출배관에 연결되어 정밀여과기를 통과한 복수를 제공받아 복수 중의 이온성분을 제거한다. 전기탈이온장치(20)는 복수 또는 농축수를 수용하여 전기적으로 탈이온시킬 수 있도록 전기탈이온장치(20) 에 전기를 공급하는 각각의 정류기(21)가 구비된다. 이러한 전기탈이온장치(20)는 특허등록된 제10-356235호의 "원통형 전기이온제거장치 모듈"을 적용한 것으로 이에 대한 구조는 생략하기로 한다. 즉, 전기탈이온장치는 전극부와 농축실 및 희석실로 나누어지고 음극과 양극 사이에 희석실과 농축실로 이루어진 한쌍의 Cell pair가 반복적으로 적층된 형태로 이루어지며, 농축수와 처리수의 인입 및 배출배관과 전극수 배출배관이 구비된다. The electric deionizer 20 is connected to the discharge pipe of the precision filter 10 and is provided with a plurality passed through the precision filter to remove ions in the plurality. The electric deionizer 20 is provided with a respective rectifier 21 for supplying electricity to the electric deionizer 20 to accommodate a plurality or concentrated water to be electrically deionized. The electric deionizer 20 is applied to the "cylindrical electric ion removal device module" No. 10-356235 No. The structure thereof will be omitted. That is, the electric deionizer is divided into an electrode part, a concentration chamber, and a dilution chamber, and a pair of cell pairs consisting of a dilution chamber and a concentration chamber is repeatedly stacked between the cathode and the anode. Piping and electrode discharge pipe are provided.

한편, 정밀여과기(10)의 배출배관에는 배출되는 복수의 탈염정도를 측정하는 계측기(11)가 설치되고, 또한 정밀여과기의 배출배관에는 전기탈이온장치를 거치지 않고 직접 배출시키는 바이패스관(12)이 형성되어 탈염정도가 기준 이하일 때에는 밸브(13,14)들을 제어하여 직접 배출시킬 수 있다.On the other hand, the discharge pipe of the precision filter 10 is provided with a measuring instrument (11) for measuring the degree of desalination discharged, and the bypass pipe 12 for direct discharge without passing through the electric deionizer in the discharge pipe of the precision filter (12) ) Is formed so that the degree of desalination is less than the reference can be directly discharged by controlling the valve (13,14).

농축수저장탱크(30)는 전기탈이온장치(20)의 농축수 인입배관을 통해 제공되는 농축수가 저장된다. 전기탈이온장치의 처리수와 농축실에 기존의 방식대로 동시에 복수를 인입할 경우 발생할 수 있는 계통의 복수 손실을 막을 수 있다. 농축수저장탱크의 크기는 농축수 체류시간이 5~30분이 바람직하며, 특히 10~20분의 체류시간을 가지는 것이 더욱 바람직하다. The concentrated water storage tank 30 stores the concentrated water provided through the concentrated water inlet pipe of the electric deionizer 20. It is possible to prevent multiple losses of the system that can occur if the plurality of simultaneous introduction into the treated water and the concentration chamber of the electric deionizer is carried out simultaneously in the conventional manner. The size of the brine storage tank is preferably 5 to 30 minutes, and more preferably 10 to 20 minutes.

전기탈이온장치(20)를 거치면서 농축된 농축수는 다시 농축수저장탱크(30)로 순환된다. 이때, 전기탈이온장치(20)의 농축실에 인입되는 농축수의 압력은 희석실 복수의 압력보다 0.5~10kgf/cm2 정도 낮아야 하며, 더욱 바람직하게는 1~5kgf/cm2 낮게 조절하여 주는 것이 바람직하다. 또한, 농축수의 유량은 희석실 유량의 2~10% 의 범위에서 조절해 주며, 더욱 바람직하게는 3~5%가 적절하다.The concentrated water concentrated through the electric deionizer 20 is circulated back to the concentrated water storage tank 30. At this time, the pressure of the concentrated water introduced into the concentration chamber of the electric deionizer 20 should be about 0.5 ~ 10kgf / cm 2 lower than the pressure of the plurality of dilution chamber, more preferably 1 ~ 5kgf / cm 2 It is preferable. In addition, the flow rate of the concentrated water is adjusted in the range of 2 to 10% of the dilution chamber flow rate, more preferably 3 to 5% is appropriate.

한편, 농축수저장탱크(30)에서 전기탈이온장치(20)로 공급되는 농축수를 승압시키는 농축수승압펌프(40)와, 농축수승압펌프(40)에서 전기탈이온장치(20)로 공급되는 농축수와 전기탈이온장치(20)에서 배출되는 농축수를 공급받아 전기탈이온장치에서 배출되는 농축수의 여압을 회수하고, 전기탈이온장치(20)로 공급되는 농축수를 더욱 가압시켜는 에너지회수장치(50)를 구비한다.Meanwhile, the concentrated water boosting pump 40 for boosting the concentrated water supplied from the concentrated water storage tank 30 to the electric deionizer 20, and the concentrated water boosting pump 40 from the concentrated water boosting pump 40 to the electric deionizer 20. The pressurized water of the concentrated water discharged from the electric deionizer is recovered by receiving the supplied concentrated water and the concentrated water discharged from the electric deionizer 20, and further pressurizing the concentrated water supplied to the electric deionizer 20. The energy recovery device 50 is provided.

또한, 농축수저장탱크(30)의 농축수 수질을 조절하기 위해 농축수정화장치(80)가 구비되며, 농축수의 수질에 따라 운전 및 휴지를 반복한다. 이때 농축수의 수질은 10~10,000㎲/cm가 적절하며, 더욱 바람직하게는 80~1,000㎲/cm가 적절하다. 이러한, 농축수정화장치(80)는 전기탈염장치 또는 역삼투압장치가 사용되는 것이 바람직하다.In addition, the concentrated water purification apparatus 80 is provided to control the concentrated water quality of the concentrated water storage tank 30, and repeats the operation and rest according to the quality of the concentrated water. At this time, the water quality of the concentrated water is appropriate 10 ~ 10,000 ㎲ / cm, more preferably 80 ~ 1,000 ㎲ / cm is appropriate. Such, the concentrated water purification device 80 is preferably used an electrodesalting device or a reverse osmosis device.

그리고, 농축수저장탱크(30)의 농축수 수온을 조절하기 위해 열교환기(60)가 구비되어 농축수 수온에 따라 운전 및 휴지를 반복한다. 농축수의 수온은 10~40℃가 바람직하며, 더욱 바람직하게는 20~30℃가 적절하다. 일반적으로 복수는 40℃ 이상의 비교적 고온에서 운전되는 것이 일반적이나 희석실로 유입되는 복수의 온도와의 상관없이 농축수의 온도를 조절하여 운전하면 운전 유지의 측면에서 장점을 가질 수 있다. 즉, 희석실과 농축실의 온도차이에 의해 온도확산에 의한 이온제거 효율을 높일 수 있음을 물론, 전기탈이온장치의 내부구성품의 온도에 의한 노화현상을 일정부분 막을 수 있다는 장점이 있다.Then, the heat exchanger 60 is provided to adjust the concentrated water temperature of the concentrated water storage tank 30 to repeat the operation and the pause according to the concentrated water temperature. The water temperature of the concentrated water is preferably 10 to 40 ° C, more preferably 20 to 30 ° C. In general, the plurality is generally operated at a relatively high temperature of 40 ℃ or more, but can be advantageous in terms of operation maintenance by operating the temperature of the concentrated water irrespective of the plurality of temperatures introduced into the dilution chamber. That is, the temperature difference between the dilution chamber and the concentration chamber can increase the ion removal efficiency due to the temperature diffusion, and also has an advantage of preventing the aging phenomenon due to the temperature of the internal components of the electric deionizer.

전극수탈기장치(70)는 전기탈이온장치(20)의 전극수 배출배관에 연결되어 배 출되는 전극수를 촉매형 또는 분리막형으로 수용하여 탈기한 뒤 농축수저장탱크(30)로 순환시킨다. 전극수탈기장치에 의해 복수탈염시스템에서 발생되는 폐수를 최소화시킬 수 있다.The electrode dehydrator 70 is connected to the electrode water discharge pipe of the electric deionizer 20 to receive the discharged electrode water in a catalyst type or a membrane type, degassing it, and then circulates the concentrated water storage tank 30. By the electrode dehydrator, wastewater generated in the multiple desalination system can be minimized.

이하, 본 발명에 따른 복수탈염방법을 설명하면 다음과 같다.Hereinafter, the multiple desalination method according to the present invention will be described.

먼저, 처리 대상인 복수를 정밀여과기(10)를 통과시켜 복수에 포함되어 전기탈이온장치(20)의 오염을 유발할 수 있는 금속산화물 등의 입상오염원을 제거하여 한다. 정밀여과기(10)에서 여과된 복수는 전기탈이온장치(20)로 공급된다. 이때 정류기를 통해 전기탈이온장치로 직류전원을 공급하여 복수를 탈이온시켜 계통내로 공급한다. First, the plurality of objects to be treated are passed through the precision filter 10 to remove particulate pollutants such as metal oxides, which are included in the plurality and may cause contamination of the electric deionization apparatus 20. The plurality filtered in the microfilter 10 is supplied to the electric deionizer (20). At this time, DC power is supplied to the electric deionizer through the rectifier to deionize the plurality and supply it into the system.

이와 동시에 농축수승압펌프(40)를 통하여 농축수저장탱크(30) 내에 저장되어 있는 탈염수를 전기탈이온장치(20)의 농축실로 공급하여 복수 중의 이온성분을 농축실에서 농축한다. 이때, 농축수승압펌프에서 배출된 농축수는 에너지회수장치로 공급되어 더욱 높은 압력으로 승압된다. 그리고, 전기탈이온장치(20)에서 농축된 농축수는 에너지회수장치(50)를 거쳐 여압히 회수된 상태에서 다시 농축수저장탱크(30)로 공급된다. At the same time, the demineralized water stored in the concentrated water storage tank 30 is supplied to the concentration chamber of the electric deionizer 20 through the concentrated water boost pump 40 to concentrate the ionic components in the concentration chamber. At this time, the concentrated water discharged from the concentrated water boosting pump is supplied to the energy recovery device to be boosted to a higher pressure. Then, the concentrated water concentrated in the electric deionizer 20 is supplied to the concentrated water storage tank 30 again while being pressurized and recovered through the energy recovery device 50.

농축수저장탱크(30)에 저장된 농축수는 농축수승압펌프(40)에 의해 전기탈이온장치의 농축실에 순환되기 때문에 복수 중의 이온성분들이 계속 농축됨으로 일정 수질이 이상에서는 전기탈이온장치 또는 역삼투압장치를 이용한 농축수정화장치(80)를 통하여 농축수를 정화해 준다. 이때, 농축수저장탱크(30) 내의 허용수질 은 10~10000㎲/cm이며, 더욱 바람직하게는 10~1000㎲/cm이다. 따라서, 농축수정화장치(80)는 농축수저장탱크 내의 농축수가 허용수질 이내이면 운전되지 않으며, 허용수질을 넘어서면 순환펌프(81)를 통해 운전되게 된다. Since the concentrated water stored in the concentrated water storage tank 30 is circulated by the concentrated water boost pump 40 to the concentration chamber of the electric deionizer, a plurality of ionic components are continuously concentrated. Purifies the concentrated water through the concentrated water purification device 80 using a reverse osmosis system. At this time, the allowable water quality in the concentrated water storage tank 30 is 10 ~ 10000 ㎲ / cm, more preferably 10 ~ 1000 ㎲ / cm. Therefore, the concentrated water purification apparatus 80 is not operated if the concentrated water in the concentrated water storage tank is within the allowable water quality, and is operated through the circulation pump 81 if the allowed water quality is exceeded.

또한 농축수의 수온은 열교환기(60)로 조절하며, 열교환기(60)는 농축수저장탱크에 직접 연결되어 운전될 수도 있고, 에너지회수장치(50)의 배출배관에 연결되어 운전될 수도 있다. 농축수저장탱크(30)의 허용온도는 1~40℃이며, 더욱 바람직하게는 20~30℃가 적절하다.In addition, the water temperature of the concentrated water is controlled by the heat exchanger 60, the heat exchanger 60 may be directly connected to the concentrated water storage tank and operated, or may be connected to the discharge pipe of the energy recovery device (50). . The allowable temperature of the concentrated water storage tank 30 is 1 ~ 40 ℃, more preferably 20 ~ 30 ℃.

한편, 전기탈이온장치(20)의 전극실을 거쳐 배출되는 전극수는 전극수탈기장치(70)를 통해 탈기된 후 농축수저장탱크(30)로 순환된다. 전기탈이온장치(20)를 통해 나온 전극수는 그 원리상 O2와 H2가 용존되어 있으며 이들을 전극수 탈기전이를 통해 탈기하여 농축수저장탱크로 순환된다.On the other hand, the number of electrodes discharged through the electrode chamber of the electric deionizer 20 is degassed through the electrode dehydrator 70 is circulated to the concentrated water storage tank (30). The number of electrodes released through the electric deionizer 20 is O 2 and H 2 dissolved in principle, and these are degassed through the electrode degassing transition and circulated to the concentrated water storage tank.

이와 같이 복수를 전기탈이온장치를 이용하여 탈염하는 과정에서 농축수를 복수와는 완전 분리하여 운전함으로써 기존의 운전방법과는 달리 발전계통으로 순환되는 복수의 손실 원인을 제거하고 장치를 단순화함은 물론 농축수를 재생하여 재사용함으로써 용수사용 및 폐수발생을 줄일 수 있다.Thus, in the process of desalting the plurality of electric deionizers by using the electric deionizer, the concentrated water is completely separated from the plurality of operations, thereby eliminating the causes of the plurality of losses circulated to the power generation system and simplifying the apparatus, unlike the conventional operation method. Of course, by reusing and recycling the concentrated water can reduce water use and waste water generation.

이상에서 살펴본 바와 같이 본 발명의 바람직한 실시예에 대해 상세히 기술되었지만, 본 발명이 속하는 기술분야에 있어서 통상의 지식을 가진 사람이라면, 첨부된 청구 범위에 정의된 본 발명의 정신 및 범위를 벗어나지 않으면서 본 발명 을 여러 가지로 변형하여 실시할 수 있을 것이다. 따라서 본 발명의 앞으로의 실시예들의 변경은 본 발명의 기술을 벗어날 수 없을 것이다.Although described in detail with respect to preferred embodiments of the present invention as described above, those of ordinary skill in the art, without departing from the spirit and scope of the invention as defined in the appended claims The present invention may be practiced in various ways. Therefore, modifications of the embodiments of the present invention will not depart from the scope of the present invention.

도 1은 본 발명에 따른 복수탈염시스템의 개략도.1 is a schematic diagram of a multiple desalination system according to the present invention.

< 도면의 주요부분에 대한 부호의 설명 >Description of the Related Art

10 : 정밀여과기 21 : 정류기10: precision filter 21: rectifier

20 : 전기탈이온장치 30 : 농축수저장탱크20: electric deionizer 30: concentrated water storage tank

40 : 농축수승압펌프 50 : 에너지회수장치40: concentrated water boost pump 50: energy recovery device

60 : 열교환기 70 : 전극수탈기장치60: heat exchanger 70: electrode dehydrator

80 : 농축수정화장치80: concentrated water purification device

Claims (10)

복수를 제공받아 유입된 복수 중에 함유되어 있는 비용존성 입상 이물질을 여과하여 제거하는 정밀여과기와; A precision filter for filtering and removing non-relief granular foreign matters contained in the plurality of inflows received by the plurality; 내부에 농축수가 저장되는 농축수저장탱크와;A concentrated water storage tank for storing concentrated water therein; 상기 정밀여과기로부터 복수를 제공받고, 농축수저장탱크로부터 농축수를 제공받아 복수 중의 이온성분을 제거하여 배출하고, 농축수는 다시 농축수저장탱크로 배출하는 전기탈이온장치와;An electric deionizer which receives a plurality from the precision filter, receives concentrated water from the concentrated water storage tank, removes ions from the plurality, and discharges the concentrated water to the concentrated water storage tank; 상기 전기탈이온장치로 공급되는 농축수를 승압시키는 농축수승압펌프와, A concentrated water boosting pump for boosting the concentrated water supplied to the electric deionizer; 상기 농축수승압펌프에서 전기탈이온장치로 공급되는 농축수와 전기탈이온장치에서 배출되는 농축수를 제공받아 전기탈이온장치로 공급되는 농축수를 더욱 승압시키는 에너지 회수장치를 포함하는 것을 특징으로 하는 복수탈염시스템.It is characterized in that it comprises an energy recovery device for further boosting the concentrated water supplied to the electric deionizer by receiving the concentrated water supplied from the concentrated water boosting pump to the electric deionizer and discharged from the electric deionizer Multiple desalination system. 제1항에 있어서, 상기 전기탈이온장치는 복수 또는 농축수를 수용하여 전기적으로 탈이온시킬 수 있도록 전기탈이온장치에 전기를 공급하는 정류기를 구비하는 것을 특징으로 하는 복수탈염시스템.The multiple desalination system according to claim 1, wherein the electric deionization device includes a rectifier for supplying electricity to the electric deionization device so as to receive the plurality or concentrated water and electrically deionize it. 제1항에 있어서, 농축수저장탱크의 농축수 수질을 조절하기 위해 농축수정화장치를 더 포함하는 것을 특징으로 하는 복수탈염시스템.The multiple desalination system according to claim 1, further comprising a concentrated water purification device for adjusting the quality of the concentrated water of the concentrated water storage tank. 제1항에 있어서, 상기 농축수저장탱크의 농축수 수온을 조절하기 위해 열교환기가 구비되는 것을 특징으로 하는 복수탈염시스템.The multiple desalination system according to claim 1, wherein a heat exchanger is provided to adjust the concentrated water temperature of the concentrated water storage tank. 제1항에 있어서, 전기탈이온장치의 전극수 배출배관에 연결되어 배출되는 전극수를 수용하여 탈기하여 농축수저장탱크로 순환시키는 전극수탈기장치를 더 포함하는 것을 특징으로 하는 복수탈염시스템. The desalination system according to claim 1, further comprising an electrode dehydrator for receiving and degassing the electrode water discharged by being connected to the electrode water discharge pipe of the electric deionizer and circulating it to the concentrated water storage tank. 복수를 정밀여과기를 통과시켜 복수 중에 포함된 입상오염원을 여과한 후 전기탈이온장치로 공급하는 단계와, Filtering the granular pollutant contained in the plurality by passing the plurality through a precision filter and then supplying the resultant to an electric deionizer; 정밀여과기를 통해 처리된 여과수를 전기탈이온장치의 희석실을 통과시켜 정류기의 전기를 통해 탈이온된 처리수를 배출시키는 단계와, Passing the filtered water treated through the microfilter through the dilution chamber of the electric deionizer to discharge the deionized treated water through the electricity of the rectifier; 상기 전기탈이온장치의 희석실을 이용하여 복수중의 이온성분을 탈염하는 것과 동시에 농축수저장탱크 내의 탈염수를 농축수승압펌프를 이용하여 전기탈이온장치의 농축실로 순환시킴으로써 복수중의 이온성분을 농축하는 단계와, The deionized water in the concentrated water storage tank is desalted using the dilution chamber of the electric deionizer and the demineralized water in the concentrated water storage tank is circulated to the concentration chamber of the electric deionizer using the concentrated water boost pump. Concentrating, 상기 전기탈이온장치에 연결된 에너지회수장치에서 농축수의 여압을 회수하는 단계와, Recovering the pressurization of the concentrated water in an energy recovery device connected to the electric deionizer; 상기 전기탈이온장치의 전극수를 전극수탈기장치를 이용하여 탈기한 후 농축수저장탱크로 순환시키는 단계를 포함하는 것을 특징으로 하는 복수탈염 방법. And degassing the electrode water of the electric deionizer using an electrode dehydrator and circulating the electrode water to a concentrated water storage tank. 제6항에 있어서, 상기 농축수저장탱크 내의 농축수를 농축수정화장치에서 처 리하여 농축수의 수질을 조절하는 단계를 더 포함하는 것을 특징으로 하는 복수탈염 방법. The method of claim 6, further comprising the step of controlling the water quality of the concentrated water by treating the concentrated water in the concentrated water storage tank in a concentrated water purification apparatus. 제7항에 있어서, 상기 농축수정화장치는 전기탈이온장치 또는 역삼투압장치인 것을 특징으로 하는 복수탈염 방법. 8. The method of claim 7, wherein the concentrated water purification device is an electrodesorption device or a reverse osmosis device. 제6항에 있어서, 상기 농축수저장탱크의 농축수를 열교환기로 공급하여 농축수의 수온을 조절하는 단계를 더 포함하는 것을 특징으로 하는 복수탈염 방법. The method of claim 6, further comprising the step of controlling the water temperature of the concentrated water by supplying the concentrated water of the concentrated water storage tank to the heat exchanger. 제6항에 있어서, 상기 전기탈이온장치의 농축실에 인입되는 농축수의 압력은 희석실 복수의 압력보다 0.5~10kgf/cm2 정도 낮은 것을 특징으로 하는 복수탈염 방법. The method of claim 6, wherein the pressure of the concentrated water introduced into the concentration chamber of the electric deionizer is about 0.5 to 10 kgf / cm 2 lower than the pressure of the dilution chamber.
KR1020080110366A 2008-11-07 2008-11-07 Condensate polishing system and method thereof KR101063926B1 (en)

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