WO2015030366A1 - Appareil d'élimination de déchets liquides radioactifs - Google Patents

Appareil d'élimination de déchets liquides radioactifs Download PDF

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Publication number
WO2015030366A1
WO2015030366A1 PCT/KR2014/006491 KR2014006491W WO2015030366A1 WO 2015030366 A1 WO2015030366 A1 WO 2015030366A1 KR 2014006491 W KR2014006491 W KR 2014006491W WO 2015030366 A1 WO2015030366 A1 WO 2015030366A1
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WO
WIPO (PCT)
Prior art keywords
membrane
liquid waste
radioactive liquid
nano
reverse osmosis
Prior art date
Application number
PCT/KR2014/006491
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English (en)
Korean (ko)
Inventor
박헌휘
서창희
박성균
Original Assignee
㈜이엔이
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Publication date
Application filed by ㈜이엔이 filed Critical ㈜이엔이
Publication of WO2015030366A1 publication Critical patent/WO2015030366A1/fr

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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/06—Processing
    • G21F9/12—Processing by absorption; by adsorption; by ion-exchange

Definitions

  • the present invention relates to radioactive liquid waste disposal.
  • Korean nuclear power plant operated an evaporator or centrifuge as a treatment facility to treat radioactive liquid waste.
  • the membrane is installed as a pretreatment equipment at the front of the evaporator or centrifuge, and suspended solids, turbidity-causing substances, detergents, lint, and particulate nuclides (Cr, Co, Ag, Fe, K, Mg) was removed in advance to improve the radioactive liquid waste treatment apparatus to discharge the treated water from the ion exchange resin.
  • the method is to drain the membrane separation tank to be stored in the concentrated waste storage tank installed in the nuclear power plant to be treated using a separate concentrated waste drying equipment or concentrated waste treatment equipment, and the concentrated water generated during the operation of the membrane is also In the same way.
  • the purpose of the present invention is to reduce the volume of the concentrated water by installing a boundary plate in the membrane separation tank to form a concentration tank, and installing a microfiltration or ultrafiltration membrane inside the concentration tank.
  • the present invention is a membrane separation tank (8) provided with a microfiltration or ultrafiltration membrane (9-A) therein; Nano or reverse osmosis membranes (9-B);
  • the membrane boundary plate 103 is provided in the membrane separation tank 8, and the concentration tank 117 is formed,
  • the said concentration tank 117 provides a radioactive liquid waste treatment apparatus characterized by having one or more microfiltration or ultrafiltration separators 102 therein.
  • the present invention can reduce the volume of the radioactive liquid waste condensate by installing a concentration tank in the radioactive liquid waste treatment device, thereby reducing the operating load of the concentrated water drying facility or the concentrated water treatment facility, thereby saving energy.
  • 1 is a conventional radioactive liquid waste treatment apparatus.
  • microfiltration or ultrafiltration membrane treated water delivery piping microfiltration or ultrafiltration membrane treated water delivery piping
  • the radioactive liquid waste treatment apparatus of the present invention includes a membrane separation tank (8) provided with a microfiltration or ultrafiltration membrane (9-A) therein; Nano or reverse osmosis membranes (9-B);
  • the ion exchange tower 6 for ion exchange is sequentially installed, and a membrane boundary plate 103 is installed inside the membrane separation tank 8 to form a concentration tank 117, and the concentration tank 117 is disposed therein. It is characterized by the presence of one or more microfiltration or ultrafiltration separation membranes 102.
  • a microfiltration or ultrafiltration membrane treatment water storage tank 11-A for storing the treated water filtered by the microfiltration or ultrafiltration membrane 9-A;
  • Nano or reverse osmosis membrane (9-B) for filtering the treated water stored in the microfiltration or ultrafiltration membrane treatment water storage tank (11-A);
  • An ion exchange tower 6 for ion-exchanging treated water was sequentially installed, and a membrane boundary plate 103 was installed inside the membrane separation tank 8 to form a concentration tank 117, and the concentration tank 117
  • One or more microfiltration or ultrafiltration separators 102 are provided therein.
  • the volume of the highly concentrated radioactive liquid waste drained can be reduced in advance, and the concentrated waste drying facility or the concentrated waste solution installed separately in the nuclear power plant. It provides an eco-friendly way to save energy by reducing the operating load of the facility.
  • the membrane separation tank (9-A) is immersed in water and operated under vacuum.
  • the highly concentrated radioactive liquid waste remaining in 8) will occupy at least 50% of the volume of the total membrane separator (8), which is the height corresponding to the microfiltration or ultrafiltration membrane (9-A).
  • a membrane boundary plate 103 is installed inside the membrane separation tank 8 to form the concentration tank 117, and the microfiltration or ultrafiltration inside the concentration tank 117.
  • the radioactive liquid waste concentrated by the microfiltration or ultrafiltration separation membrane 9-A remaining in the membrane separation tank 8 is introduced into the concentration tank 117, and thus the microfiltration or ultrafiltration.
  • the radioactive liquid waste may be further filtered by the separator 102 to reduce the volume of the radioactive liquid waste.
  • the volume of the concentration tank 117 to the total volume of the membrane separation tank 8 is 10: 5 to 10: 1, preferably 10: 3.5 to 10: 1.5, it is possible to appropriately reduce the volume of the highly concentrated liquid waste. have.
  • the present invention is characterized in that the oil removal filter device 101 is added to the front of the membrane separation tank (8).
  • the oil removal filter device 101 is installed at the front end of the membrane separation tank 8, the oil component is removed before the radioactive liquid waste flows into the membrane separation tank 8 so that the microfiltration or ultrafiltration membrane 9-A is removed. Contamination can be prevented, thereby reducing the throughput of radioactive liquid waste.
  • the oil removal filter device 101 has a maximum working temperature of 170 ° C., and has a filtration range of 1 to 400 ⁇ m. It is also characterized by being made of polyester material.
  • the oil removal filter device 101 is connected in series or in parallel with two or more in proportion to the processing flow rate of the radioactive liquid waste, and removes the oil component by atmospheric filtration or pressure filtration.
  • the contact pressure level sensor is attached to the atmospheric pressure filtration method, and the differential pressure gauge is attached to the pressure filtration method to determine the replacement time of the oil removal filter device 101.
  • the radioactive liquid waste treatment apparatus of the present invention is characterized by having at least one nano or reverse osmosis membrane 113 in addition to the nano or reverse osmosis membrane 9-B.
  • the nano or reverse osmosis membrane 113 may further include the nano or reverse osmosis membrane 9 -B in addition to the waste liquid discharge path of the nano or reverse osmosis membrane 9-B.
  • the nano or reverse osmosis membrane 113 having a smaller size than the reverse osmosis membrane 9 -B is installed.
  • the present invention allows the waste liquid volume generated after the operation of the nano or reverse osmosis membrane (9-B) of the radioactive liquid waste treatment apparatus using the separator to be reduced in advance, and the concentrated waste liquid drying facility or the concentrated waste liquid separately installed in the nuclear power plant. It provides an eco-friendly way to save energy by reducing the operating load of the treatment facility.
  • the concentrated water not filtered by the nano or reverse osmosis membrane 9 -B is stored in the concentrated waste drain tank 116, and the stored concentrated water is once again filtered by the nano or reverse osmosis membrane 113. . Therefore, by additionally installing one or more nano or reverse osmosis membrane 113, it is possible to reduce the volume of the concentrated water by 70% or more than when the radioactive liquid waste treatment with the conventional radioactive liquid waste treatment apparatus.
  • FIG. 2 shows an example of the radioactive liquid waste treatment apparatus of the present invention will be described below with respect to the radioactive liquid waste treatment method of the present invention.
  • step (3) separating the treated water filtered in step (2) into a nano or reverse osmosis membrane (9-B);
  • the present invention includes the step of reducing the volume of concentrated radioactive liquid waste which is disposed of in the membrane separation tank 8 after normal operation of the radioactive liquid waste treatment apparatus. That is, the membrane shutoff valve 105 is closed to transfer the concentrated water to the concentration tank 117, the microfiltration or ultrafiltration membrane shutoff valve 106 is opened, and the membrane separation tank concentrated water circulation pump 109 is operated to operate the membrane. The unfiltered concentrated water remaining in the separation tank 8 is transferred to the concentration tank 117 and filtered through the microfiltration or ultrafiltration membrane 102, and the treated water is a microfiltration or ultrafiltration membrane treated water storage tank 11-A. The brine is then discharged.
  • the invention also includes reducing the volume of concentrated radioactive liquid waste that is discarded from the nano or reverse osmosis membrane 9-B. That is, the membrane shutoff valve 118 is closed, and the nano or reverse osmosis membrane shutoff valve 119 is opened to discharge the waste concentrated water of the nano or reverse osmosis membrane 9-B to the concentrated waste drainage tank 116, and After treatment with the nano or reverse osmosis membrane 113, the treated water is transferred to the nano or reverse osmosis membrane treated water storage tank (11-B), and the remaining concentrated water is discharged.
  • the radioactive liquid waste moves to the microfiltration or ultrafiltration separator 102, the nano or reverse osmosis membrane 113, so that the volume of the finally discharged radioactive liquid waste can be reduced.
  • the performance of the oil removal filter device 101 was evaluated by adding oil to the oil removal filter device 101 at a rate of 1840 g / hr and measuring the amount of oil remaining without filtering. Three times a total of 91% of the oil was confirmed to be removed.
  • the radioactive liquid waste treatment apparatus of the present invention (FIG. 2) was used to treat radioactive liquid waste of a nuclear power plant.
  • the radioactive liquid waste before treatment stored in the storage tank was measured by radioactivity and turbidity of the treated water filtered by the oil removal filter device 101, the microfiltration or ultrafiltration membrane 102 and the nano or reverse osmosis membrane 113. Table 2 shows.
  • the Minimum Detectable Activity refers to a lower limit of detection.
  • the oil removal filter device 101 microfiltration or ultrafiltration membrane (9-A), microfiltration or ultrafiltration membrane (102), nano or reverse osmosis membrane (9-B), nano or reverse osmosis membrane It has been found that the radioactive liquid waste treatment apparatus of the present invention, which is treated in the order of 113 and ion exchange tower 6, can also treat radioactive liquid waste of a heavy water reactor type nuclear power plant.
  • the present invention can reduce the volume of the radioactive liquid waste condensate by installing a concentration tank in the radioactive liquid waste treatment device, thereby reducing the operating load of the concentrated water drying facility or the concentrated water treatment facility, thereby saving energy.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

La présente invention concerne un appareil d'élimination de déchets liquides radioactifs qui est équipé en outre d'un dispositif filtre d'élimination d'huile, d'une membrane de microfiltration ou d'ultrafiltration, et d'une nanomembrane ou membrane d'osmose inverse, ce qui permet de réduire le volume d'eau de rétentat.
PCT/KR2014/006491 2013-08-27 2014-07-17 Appareil d'élimination de déchets liquides radioactifs WO2015030366A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2013-0101584 2013-08-27
KR1020130101584A KR101399365B1 (ko) 2013-08-27 2013-08-27 방사성 액체 폐기물 처리 장치

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WO2015030366A1 true WO2015030366A1 (fr) 2015-03-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106057264A (zh) * 2016-06-14 2016-10-26 东莞市联洲知识产权运营管理有限公司 一种高效环保的放射性废水处理方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104810071B (zh) * 2015-04-16 2017-02-22 湖南桃花江核电有限公司 含硼放射性废液深度净化同时回收硼酸的方法及设备
KR101741232B1 (ko) * 2016-04-08 2017-05-30 한국수력원자력 주식회사 밸브의 개폐조작에 의한 방사성 액체 폐기물 다 공정 처리 유닛
KR101727216B1 (ko) * 2016-04-22 2017-04-17 (주)이엔이 이동형 방사능 오염수 처리장치
KR101696888B1 (ko) 2016-10-12 2017-01-17 (주)전테크 방사성 물질 함유 액체폐기물의 처리와 감량을 위한 처리시스템

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940001977Y1 (ko) * 1993-12-13 1994-03-30 한국원자력 연구소 역삼투막과 한외여과막의 결합공정을 이용한 방사성 세탁폐액의 처리장치
JPH07191190A (ja) * 1993-12-27 1995-07-28 Power Reactor & Nuclear Fuel Dev Corp 放射性物質取扱施設の廃水処理装置
KR20040077088A (ko) * 2003-02-27 2004-09-04 박헌휘 방사성 액체 폐기물 처리방법
JP2013148364A (ja) * 2012-01-17 2013-08-01 Mitsubishi Heavy Ind Ltd 放射性廃液処理装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101224725B1 (ko) 2012-08-03 2013-01-21 한국정수공업 주식회사 방사성 액체폐기물 처리방법 및 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940001977Y1 (ko) * 1993-12-13 1994-03-30 한국원자력 연구소 역삼투막과 한외여과막의 결합공정을 이용한 방사성 세탁폐액의 처리장치
JPH07191190A (ja) * 1993-12-27 1995-07-28 Power Reactor & Nuclear Fuel Dev Corp 放射性物質取扱施設の廃水処理装置
KR20040077088A (ko) * 2003-02-27 2004-09-04 박헌휘 방사성 액체 폐기물 처리방법
JP2013148364A (ja) * 2012-01-17 2013-08-01 Mitsubishi Heavy Ind Ltd 放射性廃液処理装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106057264A (zh) * 2016-06-14 2016-10-26 东莞市联洲知识产权运营管理有限公司 一种高效环保的放射性废水处理方法

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