KR101360020B1 - Preprocessing of membrane filtration and system using the same - Google Patents

Preprocessing of membrane filtration and system using the same Download PDF

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KR101360020B1
KR101360020B1 KR1020130027773A KR20130027773A KR101360020B1 KR 101360020 B1 KR101360020 B1 KR 101360020B1 KR 1020130027773 A KR1020130027773 A KR 1020130027773A KR 20130027773 A KR20130027773 A KR 20130027773A KR 101360020 B1 KR101360020 B1 KR 101360020B1
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membrane
remove
reverse osmosis
treated water
ultrafiltration
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정종태
조용현
우달식
한상윤
신성훈
김희영
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재단법인 한국계면공학연구소
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/18—Liquid substances or solutions comprising solids or dissolved gases
    • A61L2/183—Ozone dissolved in a liquid
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • 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
    • B01D61/14—Ultrafiltration; Microfiltration
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    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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    • 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
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    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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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
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/05—Conductivity or salinity
    • C02F2209/055—Hardness
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
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    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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  • Chemical & Material Sciences (AREA)
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  • Water Supply & Treatment (AREA)
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Abstract

The present invention provides a preprocessing method of membrane filtration and a preprocessing system of membrane filtration using the same. The preprocessing method of membrane filtration comprises: an advanced oxidation step (100) for inputting raw water into an advanced oxidation device (10) to remove and disinfect refractory pollutants; an ozone stripping step (200) for inputting treated water discharged from the advanced oxidation step (100) into an ozone stripping tank (20) to remove remaining ozone; a biofilm filtration step (300) for inputting the treated water discharged from the ozone stripping step (200) into a biofilm filtration filter (30) to remove nitrate nitrogen; an ultrafiltration step (400) for inputting the treated water discharged from the biofilm filtration step (300) into an ultrafiltration membrane (40) to remove pollutants; a reverse osmosis treatment step (500) for inputting the treated water discharged from the ultrafiltration step (400) into a reverse osmosis membrane (50) to remove ionic harmful materials; a supply step (800) for supplying the treated water discharged from the reverse osmosis treatment step (500) as water for use; an electrolysis step (700) for inputting concentrated water generated from the ultrafiltration step (400) and the reverse osmosis treatment step (500) into an electrolysis device (70) to remove salinity; and a recirculation step for conducting the advanced oxidation step (10) or the reverse osmosis treatment step (500) for the treated water discharged from the electrolysis step (700). Therefore, the present invention can improve the treatment efficiency of membrane filtration by reducing membrane fouling, can ensure economic feasibility, and can maximize a recovery rate by effectively removing salinity from membrane concentrated water. [Reference numerals] (AA) Raw water; (BB,CC) Concentrate water

Description

막여과 공정의 전처리 방법 및 이를 이용한 막여과 공정의 전처리 시스템{PREPROCESSING OF MEMBRANE FILTRATION AND SYSTEM USING THE SAME}Pretreatment method of membrane filtration process and pretreatment system of membrane filtration process using same {PREPROCESSING OF MEMBRANE FILTRATION AND SYSTEM USING THE SAME}

본 발명은 환경 분야에 관한 것으로서, 상세하게는 막여과 공정의 전처리 방법 및 이를 이용한 막여과 공정의 전처리 시스템에 관한 것이다.The present invention relates to the field of the environment, and more particularly, to a pretreatment method for a membrane filtration process and a pretreatment system for a membrane filtration process using the same.

일반적으로 우수 및 하수, 오수, 폐수 등의 수체(즉, 물)는 하천 오염 방지 및 상등수 사용 등의 목적을 위해, 여과, 침전 등의 여러 수처리 과정을 거치고 있다.In general, water bodies (ie, water) such as stormwater, sewage, sewage, and wastewater are subjected to various water treatment processes such as filtration and sedimentation for the purpose of prevention of river pollution and use of high-grade water.

특히 역삼투막, 한외 여과막, 정밀 여과막 등의 막여과 공정은 수처리 공정의 전반에 걸쳐 이용되고 있다.In particular, membrane filtration processes such as reverse osmosis membranes, ultrafiltration membranes and microfiltration membranes are used throughout the water treatment process.

막여과 공정은 막을 여재로 하여 원수를 통과시켜 불순물을 여과하는 공정이다.The membrane filtration process is a process of filtering impurities by passing raw water through the membrane.

그런데 이러한 막여과 공정은 원수의 용질이 막에 의해 저지됨에 따라 막힘이나 부착층의 현상이 초래되는 현상 즉, 막 파울링이 발생하게 되는 문제점이 있다.However, such a membrane filtration process has a problem in that the phenomenon of clogging or adhesion layer is caused as the solute of raw water is blocked by the membrane, that is, membrane fouling occurs.

막 파울링으로 인하여 막 차압이 증가함에 따라 막의 처리유량이 감소되고, 여과기능이 저하되며, 막의 수명이 단축될 우려가 있다.As membrane differential pressure increases due to membrane fouling, the treatment flow rate of the membrane decreases, the filtration function decreases, and the life of the membrane may be shortened.

또한, 이로 인하여 동역비 증가 및 화학 세정주기 단축 등에 의한 유지관리 비용이 증가하는 문제점이 있다.In addition, there is a problem in that the maintenance cost is increased due to increased labor costs and shortening the chemical cleaning cycle.

따라서, 수처리 공정 내 막 파울링을 효과적으로 저감시키기 위한 적절한 전처리 공정이 요구된다.Therefore, a suitable pretreatment process is required to effectively reduce membrane fouling in the water treatment process.

또한, 종래에는 막여과 공정으로부터 발생하는 농축수를 별도로 처리하지 않은 상태로 하천 또는 바다에 방류하였다.In addition, conventionally, the concentrated water generated from the membrane filtration process is discharged to a river or the sea without being treated separately.

따라서, 농축수의 높은 염 농도와 유해물질에 의하여 생태계와 환경이 크게 오염되는 문제점이 있다.Therefore, there is a problem that the ecosystem and the environment are greatly polluted by the high salt concentration of the concentrated water and harmful substances.

이러한 문제점을 해결하기 위하여 막여과 공정으로부터 발생하는 농축수를 처리하기 위한 별도의 처리공정이 요구된다.In order to solve this problem, a separate treatment process for treating the concentrated water generated from the membrane filtration process is required.

본 발명은 상기와 같은 문제점을 해결하기 위하여 도출된 것으로서, 막 파울링을 저감시켜 막여과 공정의 처리효율을 향상시키고, 경제성을 확보할 수 있으며, 막 농축수의 염분을 효과적으로 제거하여 회수율을 극대화할 수 있는 막여과 공정의 전처리 방법 및 이를 이용한 막여과 공정의 전처리 시스템을 제공하는 것을 그 목적으로 한다.The present invention is derived to solve the above problems, to reduce the membrane fouling to improve the treatment efficiency of the membrane filtration process, to ensure economic efficiency, to effectively remove the salt of the membrane concentrated water to maximize the recovery rate It is an object of the present invention to provide a pretreatment method of a membrane filtration process which can be performed and a pretreatment system of a membrane filtration process using the same.

상기 과제의 해결을 위하여, 본 발명은 원수에 대하여 난분해성 오염물질을 제거하고, 소독하도록 고도 산화장치(10)에 투입하는 고도 산화단계(100); 상기 고도 산화단계(100)에서 배출된 처리수에 대하여 잔류 오존을 제거하도록, 오존 탈기조(20)에 투입하는 오존 탈기단계(200); 상기 오존 탈기단계(200)에서 배출된 처리수에 대하여 질산성 질소를 제거하도록, 생물막여과필터(30)로 투입하는 생물막 여과단계(300); 상기 생물막 여과단계(300)에서 배출된 처리수에 대하여 오염물질을 제거하도록 한외 여과막(40)에 투입하는 한외 여과단계(400); 상기 한외 여과단계(400)에서 배출된 처리수에 대하여 이온성 유해물질을 제거하도록 역삼투막(50)에 투입하는 역삼투압 처리단계(500); 상기 역삼투압 처리단계(500)에서 배출된 처리수를 용수로 공급하는 공급단계(800); 상기 한외 여과단계(400) 및 역삼투압 처리단계(500)에서 발생한 농축수에 대하여 염분을 제거하도록, 전기 분해장치(70)에 투입하는 전기 분해단계(700); 상기 전기 분해단계(700)에서 배출된 처리수에 대하여 상기 고도 산화단계(100) 내지 역삼투압 처리단계(500)가 이루어지는 재순환단계;를 포함하는 것을 특징으로 하는 막여과 공정의 전처리 방법을 제시한다.In order to solve the above problems, the present invention is advanced oxidation step (100) for inputting to the advanced oxidation device 10 to remove and disinfect difficult to decompose the raw water; An ozone degassing step (200) which is introduced into the ozone degassing tank (20) to remove residual ozone with respect to the treated water discharged in the advanced oxidation step (100); A biofilm filtration step 300 of feeding the biofilm filtration filter 30 to remove nitrate nitrogen with respect to the treated water discharged from the ozone degassing step 200; An ultrafiltration step 400 which is input to the ultrafiltration membrane 40 to remove contaminants with respect to the treated water discharged from the biofilm filtration step 300; A reverse osmosis treatment step (500) for inputting the reverse osmosis membrane (50) to remove ionic harmful substances with respect to the treated water discharged from the ultrafiltration step (400); A supply step 800 of supplying the treated water discharged from the reverse osmosis treatment step 500 into water; An electrolysis step (700) for feeding into the electrolysis device (70) to remove salts for the concentrated water generated in the ultrafiltration step (400) and reverse osmosis treatment step (500); It proposes a pre-treatment method of a membrane filtration process comprising a; recycling step of the advanced oxidation step 100 to reverse osmosis treatment step 500 is performed for the treated water discharged from the electrolysis step 700. .

상기 고도 산화단계(100)는 상기 고도 산화장치(10)에 오존 및 과산화수소를 주입하는 주입단계(110);를 더 포함하는 것이 바람직하다.The advanced oxidation step 100 preferably further comprises an injection step 110 for injecting ozone and hydrogen peroxide into the advanced oxidizer 10.

상기 전기 분해단계(700)는 상기 한외 여과단계(400) 및 역삼투압 처리단계(500)에서 발생한 농축수를 pH 6 이하로 하여 전기 분해하는 것이 바람직하다.The electrolysis step 700 is preferably electrolyzed by the concentrated water generated in the ultrafiltration step 400 and the reverse osmosis treatment step 500 to pH 6 or less.

상기 전기 분해단계(700) 이전에, 상기 한외 여과단계(400) 및 역삼투압 처리단계(500)에서 발생한 농축수에 대하여 경도 유발물질을 제거하도록, 연수 처리장치(60)에 투입하는 연수 처리단계(600);를 더 포함하는 것이 바람직하다.Before the electrolysis step 700, the soft water treatment step to put in the soft water treatment device 60, to remove the hardness-inducing material for the concentrated water generated in the ultrafiltration step 400 and reverse osmosis treatment step 500. It is preferable to further include (600).

상기 생물막 여과단계(300)는 상기 생물막여과필터(30)에 들어있는 입상여재를 이용하여 이루어지며, 상기 입상여재는 활성탄 또는 부유성 PE여재 중 어느 하나를 사용하는 것이 바람직하다.The biofilm filtration step 300 is made by using a particulate filter contained in the biofilm filter 30, the particulate filter is preferably used any one of activated carbon or floating PE media.

본 발명은 상기 막여과 공정의 전처리 방법을 이용한 막여과 공정의 전처리 시스템으로서, 원수에 대하여 난분해성 오염물질을 제거하고 소독하도록 형성된 고도 산화장치(10); 상기 고도 산화장치(10)에서 배출된 처리수에 대하여 잔류 오존을 제거하도록 형성된 오존 탈기조(20); 상기 오존 탈기조(20)에서 배출된 처리수에 대하여 질산성 질소를 제거하도록 형성된 생물막여과필터(30); 상기 생물막여과필터(30)에서 배출된 처리수에 대하여 오염물질을 제거하도록 형성된 한외 여과막(40); 상기 한외 여과막(40)에서 배출된 처리수에 대하여 이온성 유해물질을 제거하도록 형성된 역삼투막(50); 상기 역삼투막(50)에서 배출된 처리수를 용수로 공급하는 공급부(80); 상기 한외 여과막(40) 및 역삼투막(50)에서 발생한 농축수에 대하여 염분을 제거하도록 형성된 전기 분해장치(70); 상기 전기 분해장치(70)에서 배출된 처리수를 상기 고도 산화장치(10)에 투입하여 재순환하는 재순환부;를 포함하는 것을 특징으로 하는 막여과 공정의 전처리 시스템을 함께 제시한다.The present invention provides a pretreatment system of a membrane filtration process using the pretreatment method of the membrane filtration process, comprising: an advanced oxidation apparatus (10) configured to remove and disinfect hardly degradable contaminants from raw water; An ozone degassing tank 20 formed to remove residual ozone from the treated water discharged from the advanced oxidizer 10; A biofilm filtration filter 30 formed to remove nitrate nitrogen from the treated water discharged from the ozone degassing tank 20; An ultrafiltration membrane 40 formed to remove contaminants from the treated water discharged from the biofilm filtration filter 30; A reverse osmosis membrane (50) formed to remove ionic harmful substances with respect to the treated water discharged from the ultrafiltration membrane (40); A supply unit 80 supplying the treated water discharged from the reverse osmosis membrane 50 to the water; An electrolysis device (70) formed to remove salt from the concentrated water generated in the ultrafiltration membrane (40) and the reverse osmosis membrane (50); The pre-treatment system of the membrane filtration process, comprising a; and a recirculation unit for recirculating the treated water discharged from the electrolysis device 70 to the advanced oxidizer 10.

상기 고도 산화장치(10)의 내부에 오존 및 과산화수소를 주입하는 주입부(11);를 더 포함하는 것이 바람직하다.Preferably, the injection unit 11 for injecting ozone and hydrogen peroxide into the advanced oxidizer 10 is further included.

상기 한외 여과막(40) 및 역삼투막(50)에서 발생한 농축수에 대하여 경도 유발물질을 제거하도록 형성된 연수 처리장치(60);를 더 포함하는 것이 바람직하다.It is preferable to further include a; soft water treatment device 60 formed to remove the hardness-inducing material for the concentrated water generated in the ultrafiltration membrane 40 and the reverse osmosis membrane (50).

본 발명은 막 파울링을 저감시켜 막여과 공정의 처리효율을 향상시키고, 경제성을 확보할 수 있으며, 막 농축수의 염분을 효과적으로 제거하여 회수율을 극대화할 수 있는 막여과 공정의 전처리 방법 및 이를 이용한 막여과 공정의 전처리 시스템을 제시한다.The present invention is to reduce the membrane fouling to improve the treatment efficiency of the membrane filtration process, to ensure economic efficiency, and to effectively remove the salinity of the membrane concentrated water to maximize the recovery rate and pretreatment method of the membrane filtration process using the same A pretreatment system for the membrane filtration process is presented.

도 1 이하는 본 발명에 의한 막여과 공정의 전처리 시스템 실시예를 도시한 것으로서,
도 1은 일실시예의 공정도.Figure 1 below shows an embodiment of the pretreatment system of the membrane filtration process according to the present invention,
1 is a process diagram of one embodiment.

이하, 첨부도면을 참조하여 본 발명의 실시예에 관하여 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1 이하에 도시된 바와 같이, 본 발명에서 제시하는 막여과 공정의 전처리 방법은 원수에 대하여 난분해성 오염물질을 제거하고, 소독하도록 고도 산화장치(10)에 투입하는 고도 산화단계(100); 고도 산화단계(100)에서 배출된 처리수에 대하여 잔류 오존을 제거하도록, 오존 탈기조(20)에 투입하는 오존 탈기단계(200); 오존 탈기단계(200)에서 배출된 처리수에 대하여 질산성 질소를 제거하도록, 생물막여과필터(30)로 투입하는 생물막 여과단계(300); 생물막 여과단계(300)에서 배출된 처리수에 대하여 오염물질을 제거하도록 한외 여과막(40)에 투입하는 한외 여과단계(400); 한외 여과단계(400)에서 배출된 처리수에 대하여 이온성 유해물질을 제거하도록 역삼투막(50)에 투입하는 역삼투압 처리단계(500); 역삼투압 처리단계(500)에서 배출된 처리수를 용수로 공급하는 공급단계(800); 한외 여과단계(400) 및 역삼투압 처리단계(500)에서 발생한 농축수에 대하여 염분을 제거하도록, 전기 분해장치(70)에 투입하는 전기 분해단계(700); 전기 분해단계(700)에서 배출된 처리수에 대하여 고도 산화단계(100) 내지 역삼투압 처리단계(500)가 이루어지는 재순환단계;를 포함하는 구성으로 이루어진다.As shown below in Figure 1, the pre-treatment method of the membrane filtration process proposed in the present invention is a highly oxidized step (100) that is injected into the advanced oxidizer 10 to remove and disinfect hardly decomposable contaminants with respect to raw water; An ozone degassing step 200 which is introduced into the ozone degassing tank 20 to remove residual ozone with respect to the treated water discharged in the advanced oxidation step 100; A biofilm filtration step 300 for feeding the biofilm filtration filter 30 to remove nitrate nitrogen with respect to the treated water discharged from the ozone degassing step 200; An ultrafiltration step 400 which is input to the ultrafiltration membrane 40 to remove contaminants of the treated water discharged from the biofilm filtration step 300; Reverse osmosis treatment step (500) to put into the reverse osmosis membrane 50 to remove the ionic harmful substances with respect to the treated water discharged from the ultrafiltration step 400; A supply step 800 of supplying the treated water discharged from the reverse osmosis treatment step 500 into the water; An electrolysis step 700 that is introduced into the electrolysis device 70 to remove salts from the concentrated water generated in the ultrafiltration step 400 and the reverse osmosis treatment step 500; It consists of a; including a recirculation step of the advanced oxidation step 100 to reverse osmosis treatment step 500 for the treated water discharged from the electrolysis step 700.

즉, 본 발명에서는 고도 산화단계(100), 오존 탈기단계(200) 및 생물막 여과단계(300)의 전처리 공정을 통하여 한외 여과단계(400) 및 역삼투압 처리단계(500)에서 발생하는 막 파울링 현상으로 인한 문제점들을 효과적으로 방지하도록 한 것이다.That is, in the present invention, membrane fouling generated in the ultrafiltration step 400 and the reverse osmosis treatment step 500 through the pretreatment process of the advanced oxidation step 100, the ozone degassing step 200 and the biofilm filtration step 300. It is to effectively prevent the problems caused by the phenomenon.

이를 통해, 한외 여과단계(400) 및 역삼투압 처리단계(500)에서 막의 처리 효율을 극대화하고, 유지관리 비용을 감소시킬 수 있으며, 막의 수명 연장 효과를 얻을 수 있다.Through this, it is possible to maximize the treatment efficiency of the membrane in the ultrafiltration step 400 and the reverse osmosis treatment step 500, to reduce maintenance costs, and to extend the life of the membrane.

또한, 경제적으로 고품질의 처리수를 공급할 수 있다는 장점이 있다.In addition, there is an advantage that it is possible to supply a high quality treated water economically.

그리고 본 발명은 한외 여과단계(400) 및 역삼투압 처리단계(500)에서 발생한 농축수에 대하여 염분을 제거하는 전기 분해단계(700)가 별도로 이루어지도록 구성함으로써, 농축수를 그대로 방류할 경우 발생할 수 있는 2차 환경오염 문제를 방지할 수 있다는 장점이 있다.And the present invention is configured so that the electrolysis step 700 to remove the salt for the concentrated water generated in the ultrafiltration step 400 and the reverse osmosis treatment step 500, it may occur when the concentrated water is discharged as it is There is an advantage that can prevent the secondary environmental pollution problem.

종래에는 농축수를 방류하지 않을 경우에 그대로 하수 처리장의 유입수로 반송하여 처리하기는 방법이 사용되기도 한다. Conventionally, when the concentrated water is not discharged, a method of returning to the influent of the sewage treatment plant and treating it as it is may be used.

이로 인하여 하수 처리장의 효율저하 등의 문제점이 발생하였지만, 본 발명에서는 염분을 제거한 농축수를 다시 공정 내 재순환함으로써, 이러한 문제점을 효과적으로 방지하고 한외 여과단계(400) 및 역삼투압 처리단계(500)에서 회수율을 극대화할 수 있다.Due to this, problems such as a decrease in efficiency of the sewage treatment plant occurred, but in the present invention, by recycling the concentrated water from which the salt is removed again in the process, this problem is effectively prevented and the ultrafiltration step 400 and reverse osmosis treatment step 500 The recovery rate can be maximized.

본 발명의 막여과 공정의 전처리 방법에 따른 각각의 공정에 대하여 구체적으로 설명하면 다음과 같다.Hereinafter, each process according to the pretreatment method of the membrane filtration process of the present invention will be described in detail.

먼저, 원수를 고도 산화장치(10)에 투입하는 고도 산화단계(100)가 이루어진다.First, an advanced oxidation step 100 of introducing raw water into the advanced oxidizer 10 is performed.

고도 산화단계(100)는 처리수에 함유된 난분해성 오염물질 및 중금속을 화학적으로 산화 분해하여 처리수 내의 난분해성 오염물질을 생분해성 오염물질로 전환하고, 산화 및 색도, 냄새 제거가 이루어지는 공정이다.The advanced oxidation step 100 is a process of chemically oxidatively decomposing hardly degradable contaminants and heavy metals contained in the treated water to convert the hardly degradable contaminants in the treated water into biodegradable contaminants, and removing oxidation, color, and smell. .

구체적으로, 고도 산화단계(100)는 고도 산화장치(10)에 초미세 순산소 기포를 공급하여, 오염물질의 산화 분해와 소독이 동시에 이루어진다.In detail, the advanced oxidation step 100 supplies ultra-fine pure oxygen bubbles to the advanced oxidizer 10 so that oxidative decomposition and disinfection of contaminants is performed at the same time.

기존의 오존보다 강한 산화력을 지닌 수산화유리기(OH radical)의 생성을 최대화시켜, 난분해성 오염물질들을 제거하는 공정으로, 오존에 의한 단독처리보다 효과와 적용성이 높고 처리비용도 저렴하다는 장점이 있다.It is advantageous in that it produces more OH radicals with stronger oxidizing power than conventional ozone and removes recalcitrant contaminants by using more effective and applicable treatment than ozone alone. .

특히, 고도 산화단계(100)를 통한 효과를 극대화하기 위하여, 고도 산화장치(10)에 오존 및 과산화수소를 주입하는 주입단계(110)가 이루어지는 것이 바람직하다.In particular, in order to maximize the effect through the advanced oxidation step 100, it is preferable that the injection step 110 for injecting ozone and hydrogen peroxide into the advanced oxidizer 10 is made.

이를 통해 처리수 내의 오염물질을 보다 효과적으로 제거하는 효과를 얻을 수 있다.This can be more effective in removing contaminants in the treated water.

다음으로, 고도 산화단계(100)에서 배출된 처리수에 대하여 잔류 오존을 제거하도록, 오존 탈기조(20)에 투입하는 오존 탈기단계(200)가 이루어진다.Next, an ozone degassing step 200 is performed to inject the ozone degassing tank 20 to remove residual ozone with respect to the treated water discharged in the advanced oxidation step 100.

오존 탈기단계(200)를 통해 고도 산화단계(100) 이후 처리수 중에 남아 있는 잔류 오존을 효과적으로 제거할 수 있다.Through the ozone degassing step 200, residual ozone remaining in the treated water after the advanced oxidation step 100 may be effectively removed.

그리고 오존 탈기단계(200)에서 배출된 처리수에 대하여 생물막 여과필터(30)로 투입하는 생물막 여과단계(300)가 이루어진다.Then, the biofilm filtration step 300 is input to the biofilm filtration filter 30 for the treated water discharged from the ozone degassing step 200.

생물막 여과단계(300)는 처리수에 함유된 질산성질소(NO3-N)의 생물학적인 제거가 이루어지며, 유기물 및 무기물의 흡착 및 산화에 의한 제거가 이루어지는 공정이다.Biofilm filtration step 300 is a biological removal of nitrogen nitrate (NO 3 -N) contained in the treated water, is a process that is removed by the adsorption and oxidation of organic and inorganic materials.

이 단계는 생물막이 충진된 생물막 여과필터(30)를 이용하여 이루어지며, 한외 여과단계(400) 및 역삼투압 처리단계(500)에서의 막 파울링 현상을 저감하기 위한 전처리 기술에 해당한다.This step is performed using the biofilm-filled biofilm filtration filter 30, and corresponds to a pretreatment technique for reducing the membrane fouling phenomenon in the ultrafiltration step 400 and the reverse osmosis treatment step (500).

즉, 생물막 여과단계(300)에서 막 파울링의 원인물질인 다양한 생분해성 오염물질을 확실하게 제거함으로써, 한외 여과단계(400) 및 역삼투압 처리단계(500)에서 공정의 효율을 극대화할 수 있다.That is, by reliably removing various biodegradable contaminants that are the causes of membrane fouling in the biofilm filtration step 300, the efficiency of the process may be maximized in the ultrafiltration step 400 and the reverse osmosis treatment step 500. .

이 단계는 생물막여과필터(30)에 들어있는 입상여재를 이용하여 이루어지며, 입상여재는 활성탄 또는 부유성 PE여재 중 어느 하나를 사용하는 것이 바람직하다.This step is made by using the particulate filter contained in the biofilm filtration filter 30, it is preferable to use any one of activated carbon or floating PE media.

생물막 여과단계(300)에서 배출된 처리수에 대하여 이온성 유해물질을 제거하도록 한외 여과막(40)에 투입하는 한외 여과단계(400)가 이루어진다.The ultrafiltration step 400 is performed injecting the ultrafiltration membrane 40 to remove ionic harmful substances with respect to the treated water discharged from the biofilm filtration step 300.

한외 여과단계(400)는 색도, 냄새, 맛 유발물질 뿐 아니라, 난분해성 유기물질과 중금속의 산화제거가 가능한 공정이다.The ultrafiltration step 400 is a process capable of oxidizing and removing hardly decomposable organic substances and heavy metals, as well as color, odor and taste causing substances.

한외 여과막(40)은 입자 크기 1~100nm의 오염물질을 걸러내며, 현탁물질, 단백질, 다당류 고분자 물질 등을 제거하는 효과가 있다.The ultrafiltration membrane 40 filters out contaminants having a particle size of 1 to 100 nm and has an effect of removing suspended substances, proteins, polysaccharide polymers, and the like.

한외 여과단계(400)에서 배출된 처리수에 대하여 이온성 유해물질을 제거하도록 역삼투막(50)에 투입하는 역삼투압 처리단계(500)가 이루어진다.A reverse osmosis treatment step 500 is performed in which the reverse osmosis membrane 50 is introduced to remove ionic harmful substances with respect to the treated water discharged from the ultrafiltration step 400.

역삼투압 처리단계(500)를 통하여 처리수에 함유된 대부분의 이온성 물질을 효과적으로 제거하여 순수한 처리수를 생산할 수 있다.Through the reverse osmosis treatment step 500, most of the ionic substances contained in the treated water may be effectively removed to produce pure treated water.

역삼투막(50)은 오염물질 크기 1nm이하의 물질을 걸러내며, 종래의 이온교환 방식 장치의 단점이었던 잦은 재생에 의한 장비의 비가동시간, 약품비용, 인력의 낭비, 악성 폐수의 처리문제 등을 합리적으로 해결할 수 있는 장치이다.Reverse osmosis membrane (50) filters out contaminants of 1 nm or less in size, and makes reasonable use of equipment downtime, chemical costs, waste of manpower, and treatment of malignant wastewater due to frequent regeneration, which was a disadvantage of conventional ion exchange devices. The device can be solved with.

역삼투압 처리단계(500)에서 배출된 최종 처리수는 용수로 공급하는 공급단계(800)가 이루어진다.The final treated water discharged from the reverse osmosis treatment step 500 is a supply step 800 for supplying water.

또한, 위의 한외 여과단계(400) 및 역삼투압 처리단계(500)에서 발생한 농축수에 대하여 염분을 제거하도록, 전기 분해장치(70)에 투입하는 전기 분해단계(700)가 이루어지는 것이 특징이다.In addition, the ultrafiltration step 400 and the reverse osmosis treatment step 500 is characterized in that the electrolysis step 700 is put into the electrolysis device 70 to remove the salt to the concentrated water generated.

즉, 본 발명은 위의 농축수의 염분을 효과적으로 제거한 후, 위의 고도 산화단계(100) 내지 역삼투압 처리단계(500)가 다시 이루어지도록 재순환시킴으로써 고품질의 용수를 공급할 수 있고, 막의 처리 효율을 극대화하는 효과를 얻을 수 있다.That is, the present invention can effectively supply the high quality water by recycling the salt to remove the concentrated water of the stomach, the advanced oxidation step (100) to reverse osmosis treatment step 500 is performed again, and improve the treatment efficiency of the membrane Maximize the effect.

또한, 염분이 높은 농축수를 그대로 공정 내 재순환 시키는 종래의 기술과 비교하여 막의 수명을 연장할 수 있으며, 이를 통해 경제성을 확보할 수 있다는 장점이 있다.In addition, the life of the membrane can be extended as compared to the conventional technique of recycling the concentrated salt water in the process as it is, there is an advantage that can be secured through this.

구체적으로 전기 분해단계(700)는 처리수의 염분을 효과적으로 제거함과 아울러, 운전비용이 낮아 매우 경제적이라는 장점이 있다.Specifically, the electrolysis step 700 has an advantage of effectively removing the salinity of the treated water and having a very low operating cost.

이 단계는 처리수를 pH 6 이하로 한 상태에서, 철(Fe) 극판을 이용하여 처리수 내의 염분(Cl-)을 치아염소산(HOCl)의 형태로 전환하여 제거한다.This step removes the salt (Cl − ) in the treated water by converting it to the form of chlorine chloride (HOCl) using the iron (Fe) electrode plate with the treated water at a pH of 6 or less.

일반적인 농축수에는 염분 농도가 높을 뿐 아니라, 스케일 유발물질의 함량이 높다.In general concentrated water, not only high salt concentration but also high content of scale causing substances.

농축수의 탄산칼슘에 의해 스케일이 형성될 경우, 농축수의 회수율이 매우 낮아지고, 처리시설의 관망에도 영향을 미치게 된다.When the scale is formed by the calcium carbonate in the brine, the recovery rate of the brine is very low and affects the network of the treatment plant.

특히, 위의 전기 분해단계(700)에서 처리수의 탄산칼슘에 의해 철(Fe) 극판에 스케일이 발생될 우려가 있다.In particular, there is a fear that the scale is generated in the iron (Fe) electrode plate by the calcium carbonate of the treated water in the electrolysis step 700 above.

따라서, 본 발명에서는 농축수 내의 스케일 유발물질을 저감할 수 방안으로서, 연수 처리단계(600)를 제시한다.Therefore, the present invention provides a soft water treatment step 600 as a way to reduce the scale-causing substances in the concentrated water.

즉, 전기 분해단계(700) 이전에 한외 여과단계(400) 및 역삼투압 처리단계(500)에서 발생한 농축수에 대하여 경도 유발물질을 제거하도록, 연수 처리장치(60)에 투입하는 연수 처리단계(600)가 이루어진다.That is, before the electrolysis step 700 to remove the hardness-inducing material for the concentrated water generated in the ultrafiltration step 400 and the reverse osmosis treatment step 500, the soft water treatment step (injected into the soft water treatment device 60) ( 600).

연수 처리단계(600)를 통해 처리수에 포함된 경도 유발물질을 효과적으로 제거함으로써,다음 단계인 전기 분해단계(700)에서 염분(Cl-)의 처리 효율을 증진시키고, 처리 효율 지속시간을 증가시키는 장점을 얻을 수 있다.By removing the hardness causing materials contained in the treated effectively through the training process step 600, the salt (Cl -) in the electrolysis step in the following step 700 and increase the treatment efficiency of, for increasing the processing efficiency duration Benefits can be obtained.

다음으로, 본 발명의 막여과 공정의 전처리 방법을 이용한 막여과 공정의 전처리 시스템에 대하여 구체적으로 설명한다.Next, the pretreatment system of a membrane filtration process using the pretreatment method of the membrane filtration process of this invention is demonstrated concretely.

먼저 원수를 난분해성 오염물질을 제거하고 소독하도록 형성된 고도 산화장치(10)에 투입한다.First, the raw water is introduced into the advanced oxidizer 10 formed to remove and disinfect the hardly degradable contaminants.

여기서, 주입부(11)를 통해 고도 산화장치(10)의 내부에 오존 및 과산화수소를 주입함으로써 오염물질을 보다 효과적으로 제거할 수 있다.Here, by injecting ozone and hydrogen peroxide into the interior of the advanced oxidizer 10 through the injection unit 11, it is possible to more effectively remove contaminants.

고도 산화장치(10)에서 배출된 처리수를 잔류 오존을 제거하도록 오존 탈기조(20)에 투입한다.The treated water discharged from the advanced oxidizer 10 is introduced into the ozone degassing tank 20 to remove residual ozone.

이 오존 탈기조(20)에서 배출된 처리수에 대하여 질산성 질소를 제거하도록 생물막여과필터(30)에 투입한다.The treated water discharged from the ozone degassing tank 20 is introduced into the biofilm filtration filter 30 to remove nitrate nitrogen.

그리고 생물막여과필터(30)에서 배출된 처리수에 대하여 오염물질을 제거하도록 한외 여과막(40)에 투입한다.And it is added to the ultrafiltration membrane 40 to remove contaminants with respect to the treated water discharged from the biofilm filtration filter 30.

한외 여과막(40)에서 배출된 처리수에 대하여 이온성 유해물질을 제거하도록 형성된 역삼투막(50)에 투입한다.The reverse osmosis membrane 50 is formed to remove ionic harmful substances with respect to the treated water discharged from the ultrafiltration membrane 40.

최종적으로 역삼투막(50)에서 배출된 최종 처리수를 공급부(80)를 통해 용수로 공급한다.Finally, the final treated water discharged from the reverse osmosis membrane 50 is supplied to the water through the supply unit 80.

한외 여과막(40) 및 역삼투막(50)의 장점은 일정 크기 이상의 현탁 물질을 확실하게 제거할 수 있다는 것이다. An advantage of the ultrafiltration membrane 40 and the reverse osmosis membrane 50 is that it is possible to reliably remove suspended substances of a certain size or more.

또한, 기계적으로 움직이는 부분이 적어 자동화가 효율적으로 이루어지며, 시설의 넓은 면적을 필요로 하지 않고, 응집제 없이도 운전이 가능하거나, 필요시에도 소량만 필요로 하여 운전관리가 간단하다는 장점이 있다.In addition, there are fewer mechanically moving parts, which makes the automation efficient and does not require a large area of the facility, it is possible to operate without a coagulant, or, if necessary, only a small amount of operation management is simple.

또한, 한외 여과막(40) 및 역삼투막(50)에서 발생한 농축수를 처리하기 위한 별도의 장치인 전기 분해장치(70)를 이용하여 염분을 제거한다.In addition, the salt is removed using an electrolysis device 70 which is a separate device for treating the concentrated water generated in the ultrafiltration membrane 40 and the reverse osmosis membrane 50.

여기서, 전기 분해장치(70)에 스케일이 생기는 문제점을 방지하기 위하여 한외 여과막(40) 및 역삼투막(50)에서 발생한 농축수에 대하여 연수 처리장치(60)를 이용하여 경도 유발물질을 제거하는 것이 바람직하다.Here, in order to prevent the problem of the scale of the electrolysis device 70, it is preferable to remove the hardness-inducing substance using the soft water treatment device 60 for the concentrated water generated in the ultrafiltration membrane 40 and the reverse osmosis membrane 50. Do.

전기 분해장치(70)에서 배출된 처리수를 재순환부를 통하여 고도 산화장치(10)에 투입하여 재순환한다.The treated water discharged from the electrolysis device 70 is recycled by being introduced into the advanced oxidizer 10 through the recirculation unit.

이와 같이 본 발명의 막여과 공정의 전처리 시스템은 한외 여과막(40) 및 역삼투막(50)에서 발생할 수 있는 막 파울링으로 인한 다양한 문제점을 효과적으로 방지할 수 있도록 구성된 시스템으로서, 공정의 처리효율을 극대화하고 고품질의 용수를 공급할 수 있으며, 유지 관리 비용을 포함한 경제적 비용을 매우 절감할 수 있는 효과가 있다.As such, the pretreatment system of the membrane filtration process of the present invention is a system configured to effectively prevent various problems due to membrane fouling that may occur in the ultrafiltration membrane 40 and the reverse osmosis membrane 50, and maximizes the treatment efficiency of the process. It is possible to supply high quality water, which can greatly reduce the economic cost, including the maintenance cost.

또한, 처리수에 대하여 경제적이고 효율적으로 오염물질을 제거하도록 형성된 시스템이며, 고농도 처리수의 수질에 능동적으로 대처할 수 있도록 공정 선정과 운전 조건을 다변화할 수 있도록 구성된 시스템이다.In addition, it is a system formed to remove contaminants economically and efficiently with respect to the treated water, it is a system configured to diversify the process selection and operating conditions to actively cope with the water quality of the high concentration treatment water.

그렇기 때문에 수 처리시에 발생할 수 있는 수질 사고를 최소화할 수 있으며, 동시에 안정적인 운전 효과를 얻을 수 있는 시스템이라는 장점이 있다.Therefore, it is possible to minimize water quality accidents that may occur during water treatment, and at the same time, there is an advantage of a system capable of obtaining stable driving effects.

이상은 본 발명에 의해 구현될 수 있는 바람직한 실시예의 일부에 관하여 설명한 것에 불과하므로, 주지된 바와 같이 본 발명의 범위는 위의 실시예에 한정되어 해석되어서는 안 될 것이며, 위에서 설명된 본 발명의 기술적 사상과 그 근본을 함께 하는 기술적 사상은 모두 본 발명의 범위에 포함된다고 할 것이다.It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It is to be understood that both the technical idea and the technical spirit of the invention are included in the scope of the present invention.

10 : 고도 산화장치 11 : 주입부
20 : 오존 탈기조 30 : 생물막여과필터
40 : 한외 여과막 50 : 역삼투막
60 : 연수 처리장치 70 : 전기 분해장치
100 : 고도 산화단계 110 : 주입단계
200 : 오존 탈기단계 300 : 생물막 여과단계
400 : 한외 여과단계 500 : 역삼투압 처리단계
600 : 연수 처리단계 700 : 전기 분해단계
800 : 공급단계10: advanced oxidizer 11: injection part
20: ozone degassing tank 30: biofilm filtration filter
40: ultrafiltration membrane 50: reverse osmosis membrane
60: soft water treatment device 70: electrolysis device
100: advanced oxidation step 110: injection step
200: ozone degassing step 300: biofilm filtration step
400: ultrafiltration step 500: reverse osmosis treatment step
600: soft water treatment step 700: electrolysis step
800 supply stage

Claims (8)

원수에 대하여 난분해성 오염물질을 제거하고, 소독하도록 고도 산화장치(10)에 투입하는 고도 산화단계(100);
상기 고도 산화단계(100)에서 배출된 처리수에 대하여 잔류 오존을 제거하도록, 오존 탈기조(20)에 투입하는 오존 탈기단계(200);
상기 오존 탈기단계(200)에서 배출된 처리수에 대하여 질산성 질소를 제거하도록, 생물막여과필터(30)로 투입하는 생물막 여과단계(300);
상기 생물막 여과단계(300)에서 배출된 처리수에 대하여 오염물질을 제거하도록 한외 여과막(40)에 투입하는 한외 여과단계(400);
상기 한외 여과단계(400)에서 배출된 처리수에 대하여 이온성 유해물질을 제거하도록 역삼투막(50)에 투입하는 역삼투압 처리단계(500);
상기 역삼투압 처리단계(500)에서 배출된 처리수를 용수로 공급하는 공급단계(800);
상기 한외 여과단계(400) 및 역삼투압 처리단계(500)에서 발생한 농축수에 대하여 염분을 제거하도록, 전기 분해장치(70)에 투입하는 전기 분해단계(700);
상기 전기 분해단계(700)에서 배출된 처리수에 대하여 상기 고도 산화단계(100) 내지 역삼투압 처리단계(500)가 이루어지는 재순환단계;를
포함하는 것을 특징으로 하는 막여과 공정의 전처리 방법.An advanced oxidation step 100 for removing the hardly degradable contaminants from the raw water and inputting the advanced oxidizer 10 to disinfect them;
An ozone degassing step (200) which is introduced into the ozone degassing tank (20) to remove residual ozone with respect to the treated water discharged in the advanced oxidation step (100);
A biofilm filtration step 300 of feeding the biofilm filtration filter 30 to remove nitrate nitrogen with respect to the treated water discharged from the ozone degassing step 200;
An ultrafiltration step 400 which is input to the ultrafiltration membrane 40 to remove contaminants with respect to the treated water discharged from the biofilm filtration step 300;
A reverse osmosis treatment step (500) for inputting the reverse osmosis membrane (50) to remove ionic harmful substances with respect to the treated water discharged from the ultrafiltration step (400);
A supply step 800 of supplying the treated water discharged from the reverse osmosis treatment step 500 into water;
An electrolysis step (700) for feeding into the electrolysis device (70) to remove salts for the concentrated water generated in the ultrafiltration step (400) and reverse osmosis treatment step (500);
A recycling step in which the advanced oxidation step 100 to the reverse osmosis treatment step 500 are performed on the treated water discharged from the electrolysis step 700;
A pretreatment method for a membrane filtration process comprising the. 제 1항에 있어서,
상기 고도 산화단계(100)는
상기 고도 산화장치(10)에 오존 및 과산화수소를 주입하는 주입단계(110);를
더 포함하는 것을 특징으로 하는 막여과 공정의 전처리 방법.The method of claim 1,
The advanced oxidation step 100
An injection step (110) for injecting ozone and hydrogen peroxide into the advanced oxidizer (10);
A method of pretreatment of a membrane filtration process further comprising. 제 1항에 있어서,
상기 전기 분해단계(700)는
상기 한외 여과단계(400) 및 역삼투압 처리단계(500)에서 발생한 농축수를 pH 6 이하로 하여 전기 분해하는 것을 특징으로 하는 막여과 공정의 전처리 방법.The method of claim 1,
The electrolysis step 700 is
Pretreatment method of the membrane filtration process characterized in that the ultrafiltration step 400 and the reverse osmosis treatment step (500) to the concentrated water generated in the pH 6 or less electrolysis. 제 1항에 있어서,
상기 전기 분해단계(700) 이전에,
상기 한외 여과단계(400) 및 역삼투압 처리단계(500)에서 발생한 농축수에 대하여 경도 유발물질을 제거하도록, 연수 처리장치(60)에 투입하는 연수 처리단계(600);를
더 포함하는 것을 특징으로 하는 막여과 공정의 전처리 방법.The method of claim 1,
Before the electrolysis step 700,
Soft water treatment step (600) to put in the soft water treatment device 60 to remove the hardness-inducing material for the concentrated water generated in the ultrafiltration step 400 and reverse osmosis treatment step 500;
A method of pretreatment of a membrane filtration process further comprising. 제 1항에 있어서,
상기 생물막 여과단계(300)는
상기 생물막여과필터(30)에 들어있는 입상여재를 이용하여 이루어지며,
상기 입상여재는 활성탄 또는 부유성 PE여재 중 어느 하나를 사용하는 것을 특징으로 하는 막여과 공정의 전처리 방법.The method of claim 1,
The biofilm filtration step 300 is
It is made by using the particulate filter contained in the biofilm filtration filter 30,
The particulate filter is a pre-treatment method of a membrane filtration process using any one of activated carbon or floating PE filter. 제 1항 내지 5항 중 어느 한 항의 막여과 공정의 전처리 방법을 이용한 막여과 공정의 전처리 시스템으로서,
원수에 대하여 난분해성 오염물질을 제거하고 소독하도록 형성된 고도 산화장치(10);
상기 고도 산화장치(10)에서 배출된 처리수에 대하여 잔류 오존을 제거하도록 형성된 오존 탈기조(20);
상기 오존 탈기조(20)에서 배출된 처리수에 대하여 질산성 질소를 제거하도록 형성된 생물막여과필터(30);
상기 생물막여과필터(30)에서 배출된 처리수에 대하여 오염물질을 제거하도록 형성된 한외 여과막(40);
상기 한외 여과막(40)에서 배출된 처리수에 대하여 이온성 유해물질을 제거하도록 형성된 역삼투막(50);
상기 역삼투막(50)에서 배출된 처리수를 용수로 공급하는 공급부(80);
상기 한외 여과막(40) 및 역삼투막(50)에서 발생한 농축수에 대하여 염분을 제거하도록 형성된 전기 분해장치(70);
상기 전기 분해장치(70)에서 배출된 처리수를 상기 고도 산화장치(10)에 투입하여 재순환하는 재순환부;를
포함하는 것을 특징으로 하는 막여과 공정의 전처리 시스템.A pretreatment system for a membrane filtration process using the pretreatment method for a membrane filtration process according to any one of claims 1 to 5,
An advanced oxidizer 10 formed to remove and disinfect the hardly degradable contaminants from the raw water;
An ozone degassing tank 20 formed to remove residual ozone from the treated water discharged from the advanced oxidizer 10;
A biofilm filtration filter 30 formed to remove nitrate nitrogen from the treated water discharged from the ozone degassing tank 20;
An ultrafiltration membrane 40 formed to remove contaminants from the treated water discharged from the biofilm filtration filter 30;
A reverse osmosis membrane (50) formed to remove ionic harmful substances with respect to the treated water discharged from the ultrafiltration membrane (40);
A supply unit 80 supplying the treated water discharged from the reverse osmosis membrane 50 to the water;
An electrolysis device (70) formed to remove salt from the concentrated water generated in the ultrafiltration membrane (40) and the reverse osmosis membrane (50);
A recirculation unit for recirculating the treated water discharged from the electrolysis device 70 into the advanced oxidizing device 10;
A pretreatment system for a membrane filtration process comprising: 제 6항에 있어서,
상기 고도 산화장치(10)의 내부에 오존 및 과산화수소를 주입하는 주입부(11);를
더 포함하는 것을 특징으로 하는 막여과 공정의 전처리 시스템.The method according to claim 6,
An injection unit 11 for injecting ozone and hydrogen peroxide into the advanced oxidizer 10;
A pretreatment system for a membrane filtration process further comprising. 제 6항에 있어서,
상기 한외 여과막(40) 및 역삼투막(50)에서 발생한 농축수에 대하여 경도 유발물질을 제거하도록 형성된 연수 처리장치(60);를
더 포함하는 것을 특징으로 하는 막여과 공정의 전처리 시스템.The method according to claim 6,
Soft water treatment device 60 formed to remove the hardness-inducing material for the concentrated water generated in the ultrafiltration membrane 40 and the reverse osmosis membrane 50;
A pretreatment system for a membrane filtration process further comprising.
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CN107344806A (en) * 2017-09-05 2017-11-14 博天环境集团股份有限公司 A kind of coal liquifaction RO concentrated waters processing system and its processing method
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CN108862768A (en) * 2018-07-04 2018-11-23 四川中物环保科技有限公司 A kind of reclamation of mine water processing method
CN109110941B (en) * 2018-08-16 2021-07-02 哈尔滨工业大学 Multi-medium filtering and regenerating integrated device and method for secondary effluent advanced treatment
CN109110941A (en) * 2018-08-16 2019-01-01 哈尔滨工业大学 The multi-medium filtering regeneration integrated apparatus and method of secondary effluent advanced treating
CN109928555A (en) * 2019-04-22 2019-06-25 湖南大学 A kind of multiduty electrochemistry/nanofiltration circulating water treatment device and application
CN110697933A (en) * 2019-10-11 2020-01-17 江南大学 Method for controlling content of halogenated disinfection byproducts
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