KR100988942B1 - Contaminated soil washing sorting system - Google Patents

Contaminated soil washing sorting system Download PDF

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KR100988942B1
KR100988942B1 KR1020100041590A KR20100041590A KR100988942B1 KR 100988942 B1 KR100988942 B1 KR 100988942B1 KR 1020100041590 A KR1020100041590 A KR 1020100041590A KR 20100041590 A KR20100041590 A KR 20100041590A KR 100988942 B1 KR100988942 B1 KR 100988942B1
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storage tank
washing
soil
washing water
tank
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KR1020100041590A
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Korean (ko)
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백용기
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(주) 삼우이엔지
주식회사케이에스티
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil
    • B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
    • B03B5/32—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions using centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil
    • B09C1/08—Reclamation of contaminated soil chemically

Abstract

PURPOSE: A contaminated soil washing sorting system is provided to reduce budget by recycling washed soils through the high pressure cleaning. CONSTITUTION: A washing screen device(50) cleans the polluted soil through the cleaning water of a processed water storage tank(40), and the cleaning water of a first storage tank(60) is sprayed at a high pressure through a venturi pipe(70). A dehydration screen(80) separates the soils through the cleaning water of a second storage tank(61). A screw decanter(140) selects sludge(150) from concentrated polluted soil, and a filter press(160) selects the sludge from the cleaned water of a 5th storage tank(64).

Description

오염토양 세척 선별장치{Contaminated soil washing sorting system}Contaminated soil washing sorting system

본 발명은 오염토양 세척 선별장치에 관한 것으로, 더욱 바람직하게는 유류 또는 석유화학의 오염물질이나 각종 중금속 등이 혼합되어 있는 오염토양을 세척설비로 유입시킨 다음, 세척수를 고압으로 분사시키면서 오염토양의 입자간 충돌 및 마찰작용을 일으키게 하여 토양입자에 흡착된 오염물질을 제거하여 세척된 토양을 선별하여 분리하고, 세척수에 잔존하는 오염물질을 약품처리 하여 슬러지를 분리함과 동시에 선별시 사용되는 세척수를 정화시켜서 재사용할 수 있도록 하기 위한 것이다.The present invention relates to a contaminated soil washing sorting apparatus, and more preferably, a contaminated soil containing oil or petrochemical contaminants or various heavy metals is introduced into a washing facility, and then the washing water is sprayed at a high pressure. It removes contaminants adsorbed to soil particles by causing collisions and friction between particles, sorts and separates the washed soil, and separates sludge by chemical treatment of remaining contaminants in the wash water. It is intended to be purified and reused.

일반적으로 환경오염은 대기오염, 수질오염, 토양오염으로 구분할 수 있으며, 이들 중에서 특히 토양오염은 식량 생산에 매우 심각한 위협이 될 수 있을 뿐만 아니라 지표수는 물론 지하수 오염을 통한 식수원의 오염을 유발하기 때문에 오염된 토양은 이른 시간에 정화될 필요가 있다.In general, environmental pollution can be classified into air pollution, water pollution, and soil pollution. Among them, soil pollution can be a serious threat to food production, and it causes pollution of drinking water sources through surface water and groundwater pollution. Contaminated soil needs to be cleaned up early.

근래 국내에서 발생하는 토양오염은 주로 액상 폐기물의 무단 매립 또는 누출사고로 인하여 발생하며, 그 밖에 장기간 산업활동 과정에서 방치된 지상 적치물의 지하 확산에 의해 이루어지고, 이러한 발생요인에 의해 나타난 오염토양은 단일 종의 화합물보다는 여러 종류의 화학종에 의해서 발생되며, 대표적인 복합 오염은 유류와 중금속의 형태로써 대부분의 산업활동 지역에서 발생하고 있다.In recent years, soil pollution in Korea is mainly caused by unauthorized landfill or leakage accident of liquid waste. In addition, it is caused by underground diffusion of ground stocks left over long periods of industrial activities. It is caused by several kinds of chemical species rather than a single compound, and representative compound pollution occurs in most industrial areas in the form of oils and heavy metals.

최근 오염된 토양을 복원하기 위한 방법으로는 토양 세척, 소각, 고형화, 안정화 및 용매추출 등과 같은 물리화학적 방법과, 토양 경작,콤포스팅(composting),바이오벤팅(bioventing), 식물복원 등과 같은 생물학적 방법으로 구분될 수 있으며, 이러한 여러 방법들 중에서 비교적 쉽고 오염된 토양을 신속히 복원할 수 있는 것은 토양세척방법이다.Recent methods for restoring contaminated soils include physicochemical methods such as soil washing, incineration, solidification, stabilization and solvent extraction, and biological methods such as soil cultivation, composting, bioventing, and plant restoration. Among these methods, the soil washing method is relatively easy and can quickly restore the polluted soil.

오염된 토양의 세척방법은 적절한 세척제를 사용하여 토양입자에 결합된 유해성 유기오염물질의 표면장력을 약화시키거나 중금속을 액상으로 변화시켜 토양입자로부터 분리시켜 처리하는 기법으로서, 광범위한 유기 및 무기오염물질을 제거할 수 있는 한편 오염물질의 종류에 관계없이 적용할 수 있는 장점이 있다.The method of washing contaminated soil is a technique to reduce the surface tension of harmful organic pollutants bound to soil particles by using an appropriate cleaning agent or to separate heavy metals into liquid phase to separate them from soil particles. On the other hand, there is an advantage that can be applied regardless of the type of contaminants.

상기에서 토양 세척방법은 현장처리법(In-situ 법)과, 현장외처리법(Ex-situ 법)으로 구분되며, 현장처리법은 오염된 토양을 굴착하지 않고 세척용액 주입정,세척용액 배출정,세척유출수 처리시설,펌프 및 계장시설,휘발물질 처리시설 등을 오염된 부지에 설치하여 처리하고자 하는 오염토양 내에 세척수를 순환시켜 오염토양을 직접 세척하는 방법으로서, 처리 시간이 길고 세척액의 회수가 어려움은 물론 이동성이 없는 단점이 있기 때문에 토양 세척방법은 주로 현장외처리법이 적용된다.Soil washing method is divided into in-situ method and ex-situ method, and in-situ treatment method does not excavate contaminated soil, does not excavate contaminated soil, wash solution discharge well, and wash. Effluent treatment facility, pump and instrumentation facility, and volatile material treatment facility are installed in the contaminated site to circulate the wash water in the contaminated soil to treat the contaminated soil directly. Of course, because of the lack of mobility, the soil washing method is mainly applied off-site treatment.

현장외처리법은 토양내 오염물질의 분포 및 토양의 물리/화학적 특성을 파악하여 처리하고자 하는 범위의 오염된 토양을 굴착한 후, 적절한 세척액을 사용하여 굴착된 오염토양을 세척장치가 있는 곳에서 세척하는 방법으로서, 최근 일반화된 토양 세척방법으로 이용된다.The off-site treatment method identifies the distribution of contaminants in the soil and the physical and chemical characteristics of the soil, excavates the contaminated soil in the range to be treated, and then cleans the excavated contaminated soil with a cleaning device using an appropriate cleaning solution. As a method of washing, it is used as a recently generalized soil washing method.

종래 토양 세척방법으로 오염된 토양을 다단계로 선별 및 세척하여 오염토양에 부착된 유류 및 중금속을 포함한 각종 오염물질을 제거하여 토양을 복원하는 기술로서, 국내 특허 제10-0534067호(오염 토양의 복원과 선별 처리를 위한 토양 세척 방법과장치)가 제안 되었다.It is a technology to restore soil by removing various contaminants including oil and heavy metals attached to contaminated soil by selecting and washing soil contaminated by the conventional soil washing method in multiple stages. Domestic Patent No. 10-0534067 (Restore of contaminated soil) Soil washing methods and apparatus for the control and screening process have been proposed.

상기의 선행기술은 오염토양을 건식 선별단계와, 고압 살수 선별단계를 통하여 선별한 다음, 1차 세척조에서 세척하는 동시에 오염물이 다량 함유된 부유 토양과 오염물이 소량 함유된 침적 토양으로 분리 배출한 후, 분리된 침적 토양을 2차 세척조에서 세척과 동시에 미립 토양과 과립 토양으로 분리 배출하여 과립 토양은 탈수하여 복원용 토양으로 환원하며, 미립 토양은 1차 세척조에서 배출된 부유 토양과 함께 침전, 응집 및 탈수공정을 통하여 폐기용 오염 슬러지로 만들고, 오염된 세척수는 중화시켜 재활용하는 기술이다.The prior art is to screen the contaminated soil through a dry sorting step, a high pressure sprinkling sorting step, and then washed in a primary washing tank and discharged into a floating soil containing a large amount of contaminants and a sedimented soil containing a small amount of contaminants. In addition, the sedimented soil is washed in the secondary washing tank and discharged into fine soil and granulated soil at the same time, and the granulated soil is dehydrated and reduced to restoration soil. And it is a technology to make the contaminated sludge for disposal through the dehydration process, the contaminated washing water to neutralize and recycle.

이러한 종래의 선행기술은 건식 선별기와, 고압 살수 선별기에서 입도가 큰 토양입자를 선별한 후, 1차 및 2차 세척조에서 세척공정이 수행된 다음, 세척공정에서 생성된 미립토양과 부양토양을 폐기용 오염 슬러지로 만들어 폐기하므로 폐기물의 처리비용이 과다하게 소요될 뿐만 아니라 폐기물로 인하여 제2의 환경오염을 야기하는 실정이고, 특히 미립자의 토양에 흡착된 오염물질을 효과적으로 제거하지 못하는 문제점들이 있었다.The conventional prior art is to sort the soil particles with a large particle size in the dry sorter, high pressure sprinkler, washing process in the primary and secondary washing tanks, and then discard the fine soil and flotation soil produced in the washing process Since the waste is made of wastewater sludge and disposed of, the waste disposal costs are excessive, as well as a second environmental pollution caused by the waste. In particular, there are problems in that the pollutants adsorbed in the soil of the particulates cannot be effectively removed.

본 발명은 상기와 같은 문제점을 해결하기 위하여 창출한 기술로서, 미립자의 오염토양에 흡착된 각종 오염물질을 효과적으로 세척하여 토양을 복원할 뿐만 아니라 세척공정이 연속적으로 진행되도록 함을 목적으로 한다.The present invention has been made in order to solve the above problems, it is an object of the present invention to effectively wash various contaminants adsorbed to the contaminated soil of fine particles to restore the soil as well as to proceed with the washing process continuously.

즉, 호퍼로 투입된 오염토양을 워싱스크린장치에서 고압으로 세척하여 1차 세척토양을 선별한 후, 다시 1차 및 2차 저장탱크 및 벤튜리관에서 잔여 오염토양을 마찰 및 원심분리 작용을 하여 탈수 스크린과 하이드로 사이클론에서 2차와 3차에 걸쳐서 세척토양을 선별할 수 있도록 함을 목적으로 한다.In other words, the soil contaminated with the hopper is washed at high pressure in the washing screen device to sort out the first washing soil, and then the dewatering screen is subjected to friction and centrifugation of the remaining soil in the primary and secondary storage tanks and venturi tubes. The purpose of this is to allow the washing soil to be screened in secondary and tertiary phases in and hydrocyclones.

또한, 본 발명은 오염토양에서 세척토양을 선별하고 회수되는 세척수에 잔존하는 슬러지를 수처리장치에서 약품처리 하여 침전 및 농축시킨 다음 벤튜리관을 통과시켜서 분리시킴과 동시에 회수되는 세척수를 재사용할 수 있도록 함을 목적으로 한다. In addition, the present invention is to select the washing soil in the contaminated soil and to treat and sediment the remaining sludge in the recovered water in the water treatment apparatus to precipitate and concentrate, and to pass through the venturi tube to separate and reuse the washed water recovered at the same time. For the purpose.

상기와 같은 목적을 갖는 본 발명의 구성을 첨부된 도면에 의거하여 설명하면 다음과 같다.Referring to the configuration of the present invention having the above object with reference to the accompanying drawings as follows.

본 발명은 도면에 나타내는 바와 같이, 오염토양이 투입되는 호퍼(10)와, As shown in the drawing, the present invention includes a hopper 10 into which contaminated soil is introduced,

상기 호퍼(10)에 투입되어 컨베이어벨트(20)를 타고 이송하는 오염토양에서 금속을 분리하기 위해 마그넷이 설치된 금속분리장치(30)와, A metal separation device 30 having a magnet installed to separate the metal from the contaminated soil which is introduced into the hopper 10 and is carried on the conveyor belt 20;

상기 금속분리장치(30)에서 금속이 분리된 오염토양을 컨베이어벨트(21)로 이송하여 처리수조저장탱크(40)에서 공급되는 세척수를 고압 분사시켜서 세척선별된 토양(90)을 분리하여 배출하기 위한 워싱스크린장치(50)와, The contaminated soil in which the metal is separated from the metal separator 30 is transferred to the conveyor belt 21 to separate and discharge the washed-selected soil 90 by high-pressure spraying the washing water supplied from the treatment tank storage tank 40. Washing screen device 50 for,

상기 워싱스크린장치(50)에서 배출된 세척수를 원심분리로 교반하여 저장하는 1차 저장탱크(60)와, A primary storage tank 60 for storing the washing water discharged from the washing screen device 50 by stirring by centrifugation;

상기 1차 저장탱크(60)에 저장된 세척수를 고압으로 분사되는 벤튜리관(70)과,A venturi tube 70 spraying the washing water stored in the primary storage tank 60 at a high pressure;

상기 벤튜리관(70)에서 배출된 세척수를 원심분리로 교반하여 저장하는 2차 저장탱크(61)와,Secondary storage tank 61 for storing by stirring and washing the water discharged from the venturi tube 70 by centrifugation;

상기 2차 저장탱크(61)에 저장된 세척수를 이송하여 세척선별된 토양(91)을 분리하는 탈수스크린(80)과,A dehydration screen 80 for separating the washing-selected soil 91 by transferring the washing water stored in the secondary storage tank 61;

상기 탈수스크린(80)에서 분리된 세척수를 원심분리로 교반하여 저장하는 3차 저장탱크(62)와,A tertiary storage tank 62 for storing the washing water separated by the dewatering screen 80 by stirring by centrifugation;

상기 3차 저장탱크(62)에서 저장된 세척수를 고압으로 분사하는 벤튜리관(110)과,A venturi tube 110 for spraying the washing water stored in the third storage tank 62 at a high pressure;

상기 벤튜리관(110)에서 배출된 세척수를 다시 원심분리로 교반하여 저장하는 4차 저장탱크(63)와,A fourth storage tank 63 for storing the stirred water discharged from the venturi tube 110 again by stirring by centrifugation;

상기 4차 저장탱크(63)에 저장된 세척수를 침전호퍼(120)에서 침전시키고 농축조(130)에서 농축시킨 후 농축된 오염토양에서 슬러지(150)를 선별하여 배출하는 스크류데칸터(140)와,A screw decanter 140 for sedimenting the washing water stored in the fourth storage tank 63 in the precipitation hopper 120 and concentrating in the concentration tank 130 and then sorting and discharging the sludge 150 from the concentrated contaminated soil;

상기 스크류데칸터(140)에서 분리된 세척수를 원심분리로 교반하여 저장하는 5차 저장탱크(64)와,A fifth storage tank 64 for storing the washing water separated by the screw decanter 140 by stirring by centrifugation;

상기 5차 저장탱크(64)에 저장된 세척수에서 슬러지(150)를 선별하여 배출하는 필터프레스(160)를 포함하여 구성한 것을 특징으로 하는 오염토양 세척 선별장치를 제공한다.
It provides a contaminated soil washing sorting device comprising a filter press 160 for sorting and discharging the sludge 150 from the wash water stored in the fifth storage tank (64).

또한, 본 발명은 상기 1차 저장탱크(60)와 3차 저장탱크(62)에 정화제를 투입하기 위한 약품탱크(170)가 각각 구성된 것을 특징으로 하는 오염토양 세척 선별장치를 제공한다.
In addition, the present invention provides a contaminated soil washing and sorting device, characterized in that the chemical tank 170 for injecting a purifier into the primary storage tank 60 and the tertiary storage tank 62, respectively.

또한, 본 발명은 상기 탈수스크린(80)과 3차 저장탱크(62) 사이에 하이드로 사이클론(180)을 장착하여 세척선별된 잔여 토양(91)을 분리하여 배출하도록 구성한 것을 특징으로 하는 오염토양 세척 선별장치를 제공한다.
In addition, the present invention is equipped with a hydro cyclone (180) between the dehydration screen 80 and the tertiary storage tank (62) to wash the polluted soil, characterized in that configured to separate and discharge the selected residual soil (91) Provide a sorting device.

또한, 본 발명은 상기 4차 저장탱크(63)와 침전 호퍼(120) 사이에 약품 저장탱크(191)가 설치된 수처리장치(190)에서 세척수를 반응, 중화, 응집시키도록 구성한 것을 특징으로 하는 오염토양 세척 선별장치를 제공한다.
In addition, the present invention is contaminated, characterized in that configured to react, neutralize, and agglomerated the washing water in the water treatment apparatus 190, the chemical storage tank 191 is installed between the fourth storage tank 63 and the precipitation hopper 120 Provide a soil washing sorting device.

또한, 본 발명은 상기 워싱스크린장치(50)에서 분리된 세척수와 필터 프레스(160)에서 분리된 세척수는 3차 저장탱크(62)로, 또 침전호퍼(120)에서 분리된 세척수는 처리수조저장탱크(40)로 순환되도록 구성한 것을 특징으로 하는 오염토양 세척 선별장치를 제공한다.
In addition, in the present invention, the washing water separated from the washing screen device 50 and the washing water separated from the filter press 160 are stored in the tertiary storage tank 62, and the washing water separated from the precipitation hopper 120 is stored in the treatment tank. It provides a contaminated soil washing sorting device, characterized in that configured to be circulated to the tank (40).

또한, 본 발명은 상기 벤튜리관(70)(110)으로 처리수조저장탱크(40)에서 세척수가 공급되도록 구성한 것을 특징으로 하는 오염토양 세척 선별장치를 제공한다. In addition, the present invention provides a contaminated soil washing sorting device, characterized in that configured to be supplied with the wash water from the treatment tank storage tank 40 to the venturi tube (70) (110).

상기와 같이 구성된 본 발명은 하수관거, 우수관거, 오수관거 등의 유지관리시 발생되는 하수준설토와 같이 오염토양을 토양세척장비를 이용해 고압으로 세척하여 세척선별된 토양을 재활용이나 재사용으로 극화시킬 수 있으므로 예산을 절감할 수 있는 효과가 있고, 세척설비를 저렴하고 간단하게 구현할 수 있는 효과가 있다.The present invention configured as described above can polarize the selected soil by recycling or reuse by washing the soil with high pressure using soil washing equipment, such as sewage level soil generated during maintenance of sewage pipe, rainwater pipe, sewage pipe, etc. There is an effect to reduce the budget, there is an effect that can be implemented inexpensive and simple to clean.

또한, 하수준설토와 같은 오염토양을 1차, 2차, 3차, 4차, 5차 저장탱크를 거치면서 교반작용 및 폭기과정을 계속적으로 반복하기 때문에 악취감소와 입자간의 충돌과 마찰로 인해 오염물질을 분리하는 효과가 있다.In addition, because the soils such as lower level soils are continuously repeated through the 1st, 2nd, 3rd, 4th, and 5th storage tanks, the stirring and aeration processes are repeated. It has the effect of separating substances.

그뿐만 아니라 1차 저장탱크와 2차 저장탱크 및 3차 저장탱크와 4차 저장탱크 사이에 벤튜리관을 장착하여 고압노즐에서 분사되는 세척액을 벤튜리관에 와류형태로 고압 분사시켜 오염토양의 입자간 충돌 및 마찰작용을 일으키게 함과 동시에 벤튜리관에서는 고압 분사작용에 의해 압력과 밀도가 급격히 낮아져 입자가 확산되면서 토양입자에 흡착된 각종 오염물질이 탈착하여 효과적으로 세척된 토양과 슬러지를 선별할 수 있도록 하는 효과가 있다.In addition, a venturi tube is installed between the primary storage tank, the secondary storage tank, the tertiary storage tank, and the fourth storage tank, and the high-pressure jet of the cleaning liquid sprayed from the high pressure nozzle is injected into the venturi tube in the form of a vortex to interpolate soil particles. At the same time, the pressure and density of the Venturi tube are rapidly lowered by high pressure injection, and the particles are diffused, so that various contaminants adsorbed on the soil particles are desorbed, so that the soil and sludge can be effectively screened. It works.

도 1은 본 발명에 따른 오염물질을 고압수로 세척하여 선별하는 공정을 나타낸 플로우시트이다.1 is a flow sheet showing a process for washing and sorting contaminants with high pressure water according to the present invention.

이하, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명을 용이하게 실시할 수 있도록 설명하기 위하여, 본 발명의 가장 바람직한 실시 예를 첨부된 도면을 참고하여 설명하기로 한다.
Hereinafter, the most preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

본 발명은 도 1에 나타내는 바와 같이, 하수관거, 우수관거, 오수관거 등의 유지관리시 발생되는 준설토는 물론 각종 오염물질이 함유된 토양에서 오염물질을 효과적으로 세척하여 깨끗한 토양으로 복원하기 위한 구성이다.As shown in FIG. 1, the present invention is configured to effectively clean contaminants from soil containing various pollutants as well as dredged soils generated during maintenance of sewage, rainwater, sewage, etc., and restore them to clean soil.

즉, 호퍼(10)로 투입된 오염물질이 혼합된 토양을 컨베이어벨트(20)로 이송하여 금속이 함유된 오염물질을 마그넷으로 제거하기 위한 금속분리장치(30)가 형성되어 있다.That is, the metal separation device 30 is formed to transfer the soil mixed with the contaminants introduced into the hopper 10 to the conveyor belt 20 to remove the metal-containing contaminants with the magnet.

상기 금속물질이 제거된 오염토양을 컨베이어벨트(21)로 이송하여 처리수조 저장탱크(40)에 저장된 세척수를 고압분사시켜서 세척선별하기 위한 워싱스크린장치(50)를 구성한다.The contaminated soil from which the metal material is removed is transferred to the conveyor belt 21 to constitute a washing screen device 50 for high-pressure spraying the washing water stored in the treatment tank storage tank 40 to select the washing.

상기 워싱스크린장치(50)는 스크린(51)(52)이 2단으로 설치되어 세척된 토양을 선별하게 되는데, 이때 선별되는 토양은 대략 3mm정도의 토양(모래)(90)이 선별된다.The washing screen device 50 screens 51 and 52 are installed in two stages to sort the washed soil, wherein the selected soil is screened soil (sand) 90 of approximately 3mm.

그리고 오염토양에 세척수를 고압분사 하여 세척하고, 배출되는 세척수를 저장하기 위한 1차 저장탱크(60)를 형성한다. 상기 1차 저장탱크(60)는 모터(300)의 동력을 받아 회전하는 회전축(310)에 형성된 교반날개(320)가 회전하면서 세척수를 교반함과 동시에 폭기과정을 계속적으로 반복실행 구성이다.Then, the washing water is washed by high pressure spraying on the contaminated soil, and a primary storage tank 60 for storing the discharged washing water is formed. The primary storage tank 60 is configured to repeatedly execute the aeration process while stirring the washing water while the stirring blade 320 is formed on the rotating shaft 310 to rotate under the power of the motor 300.

상기 1차 저장탱크(60)에 저장된 세척수에는 워싱스크린장치(50)에서 미처 분리되지 못한 오염물질이 혼합된 토양이 혼합되어 있다. 그리고 1차 저장탱크(60)에 저장된 세척수를 정화하기 위하여 약품탱크(170)에서 정화제인 계면활성제를 투입하도록 구성되어 있다. The washing water stored in the primary storage tank 60 is mixed with soil mixed with contaminants not separated by the washing screen device 50. And in order to purify the wash water stored in the primary storage tank 60 is configured to add a surfactant as a purifier in the chemical tank (170).

상기 1차 저장탱크(60)에서 정화제와 혼합되면서 교반된 세척수는 다시 벤튜리관(70)을 거쳐 2차 저장탱크(61)로 이송되어 교반됨과 동시에 폭기과정을 반복 실행하도록 구성된다. 이때 상기 벤튜리관(70)은 정화제가 혼합 교반된 세척수를 고압으로 유입하여 다수개의 고압노즐로 분사시키도록 구성함과 동시에 처리수조저장탱크(40)에 저장된 세척수를 공급하여 와류형태로 고압 분사시켜서 오염토양의 입자간 충돌 및 마찰작용으로 토양입자에 흡착된 오염물질을 탈착시키는 한편, 벤튜리관(70)에서 고압 분사작용으로 압력과 밀도가 급격히 낮아져 입자가 확산되면서 토양입자에 흡착된 오염물질을 탈착하여 세척함으로써, 오염토양에 흡착된 오염물질을 효과적으로 세척하여 토양을 복원할 수 있도록 구성하였다.(본 출원인이 등록받은 특허 제950696호를 사용함)The washing water stirred while being mixed with the purifying agent in the primary storage tank 60 is transferred to the secondary storage tank 61 through the venturi tube 70 and stirred, and is configured to repeatedly perform the aeration process. At this time, the venturi tube 70 is configured to inject the mixed and stirred washing water at a high pressure to be sprayed into a plurality of high pressure nozzles and at the same time supplying the washing water stored in the treatment tank storage tank 40 to spray high pressure in the vortex form Contaminants adsorbed on the soil particles by collisions and friction between particles of contaminated soil are desorbed, while pressure and density are drastically lowered due to high pressure injection in the venturi tube 70, and particles are diffused to remove contaminants adsorbed on the soil particles. By desorption and washing, it was configured to effectively wash the contaminants adsorbed to the contaminated soil to restore the soil. (Use Patent No. 950696 registered by the applicant)

그리고 2차 저장탱크(61)에서 교반작용 및 폭기과정을 거친 세척수에서 미처 분리되지 못한 세척된 토양(91)을 선별하기 위한 탈수스크린(80)이 구성되어 있다. 이때 상기 탈수스크린(80)에서 선별된 세척토양 역시 3mm 정도의 토양(모래)(91)이 선별된다.In addition, a dehydration screen 80 for screening the washed soil 91 which is not separated from the washing water that has undergone the stirring and aeration processes in the secondary storage tank 61 is configured. At this time, the washing soil selected by the dehydration screen 80 is also selected for the soil (sand) 91 of about 3mm.

또한, 상기 세척수는 다시 하이드로 사이클론(180)을 거쳐 3차 저장탱크(62)로 저장된다. 이때 상기 하이드로 사이클론(180)에서는 세척수를 원심력으로 회전시켜 세척수에 잔존하는 슬러지를 분리시키도록 구성한다.
In addition, the washing water is again stored in the tertiary storage tank 62 via the hydro cyclone (180). At this time, the hydrocyclone 180 is configured to rotate the washing water by centrifugal force to separate the sludge remaining in the washing water.

그리고 3차 저장탱크(62)로 이송된 세척수 역시 교반되면서 폭기과정을 반복실행하여 슬러지를 분리시키는 작용을 한다. 이때 탈수스크린(80)에서 분리된 세척수도 3차 저장탱크(62)로 이송되어 약품탱크(170)에서 공급되는 정화제와 혼합되면서 교반작용과 폭기작용을 반복 실행하게 된다.In addition, the washing water transferred to the tertiary storage tank 62 also serves to separate the sludge by repeatedly performing the aeration process while stirring. At this time, the washing water separated from the dehydration screen 80 is also transferred to the tertiary storage tank 62 and mixed with the purifying agent supplied from the chemical tank 170 to repeatedly perform the stirring and aeration actions.

또한, 상기 3차 저장탱크(62)에서 교반된 세척수는 다시 벤튜리관(110)을 거쳐서 4차 저장탱크(63)에 저장되어 교반작용 및 폭기작용을 반복 실행하도록 구성한다.In addition, the washing water stirred in the tertiary storage tank 62 is again stored in the fourth storage tank 63 via the venturi tube 110 to be configured to repeatedly perform the stirring and aeration.

상기 벤튜리(Venturi)관(110)은 전술한 바와 같이, 처리수조저장탱크(40)에서 공급되는 세척수를 고압으로 분사시키고, 세척수의 고압 분사작용으로 발생하는 흡입력에 의해 미립자의 오염토양이 벤튜리관(110)으로 흡입되어 세척수와 함께 고압으로 분사됨에 따라 분사작용에서 압력과 밀도가 급격히 낮아져 입자가 확산되면서 토양입자에 흡착된 오염물질이 탈착하여 세척됨으로써, 미립자의 토양에 흡착된 오염물질을 효과적으로 세척하여 토양을 복원하도록 구성되어 있다.(본 출원인이 등록받은 특허 제906130호를 사용함)
As described above, the Venturi tube 110 sprays the washing water supplied from the treatment tank storage tank 40 at a high pressure, and the soil contaminated by the suction due to the suction force generated by the high pressure injection of the washing water is ventuated. As it is sucked into the conduit 110 and is injected at high pressure with the washing water, the pressure and density are drastically lowered in the spraying action, and as the particles diffuse, the contaminants adsorbed to the soil particles are desorbed and washed, thereby removing the contaminants adsorbed to the soil of the fine particles. It is configured to effectively wash and restore the soil (using patent No. 906130 registered by the applicant).

상기와 같이 벤튜리관(110)을 거쳐 4차 저장탱크(63)에서 교반된 세척수는 약품저장탱크(191)가 설치된 수처리장치(190)로 유입되어 수처리용액과 반응하여 중화시켜서 응집하는 공정을 거치게 구성된다.
The washing water stirred in the fourth storage tank 63 via the venturi tube 110 as described above is introduced into the water treatment apparatus 190 in which the chemical storage tank 191 is installed, and reacted with the water treatment solution to neutralize and aggregate. It is composed.

그리고 수처리장치(190)에서 응집된 세척수는 침전호퍼(120)를 거쳐 농축조(130)에서 농축이 되도록 구성한다. 이때 상기 침전호퍼(120)에서 분리된 세척수는 다시 처리수조저장탱크(40)로 순환되어 재사용하도록 구성한다.
And the washing water aggregated in the water treatment apparatus 190 is configured to be concentrated in the concentration tank 130 via the precipitation hopper 120. At this time, the washing water separated from the precipitation hopper 120 is configured to be recycled to the treatment tank storage tank 40 to be reused.

상기 농축조(130)에서 농축된 농축액은 스크류 데칸터(140)로 이송되고, 분리된 세척수는 다시 3차 저장탱크(62)로 순환되어 재사용되도록 구성한다.
The concentrated liquid concentrated in the concentration tank 130 is transferred to the screw decanter 140, and the separated wash water is circulated back to the tertiary storage tank 62 and configured to be reused.

상기 스크류 데칸터(140)로 이송된 농축액은 고액분리되면서 세척수에 혼합된 슬러지(150)를 분리하여 배출하는 구성이다. 그리고 분리된 세척수는 다시 5차 저장탱크(64)로 배출되어 저장되면서 교반작용과 폭기작용을 반복 실행한다.The concentrated liquid transferred to the screw decanter 140 is configured to separate and discharge the sludge 150 mixed in the washing water while being separated into a solid solution. Then, the separated washing water is discharged and stored in the fifth storage tank 64 again to repeat the stirring and aeration actions.

상기 5차 저장탱크(64)에서 교반된 세척수는 다시 필터 프레스(160)를 거쳐 잔존하는 슬러지(150)를 분리하여 배출함과 동시에 분리된 세척수는 3차 저장탱크(62)로 이송하도록 구성한다.
The washed water stirred in the fifth storage tank 64 is separated and discharged from the sludge 150 remaining again through the filter press 160, and at the same time, the separated washing water is transferred to the third storage tank 62. .

상기와 같은 구성에 의한 발명은 오염토양에 혼합된 금속을 금속분리장치(30)에서 제거한 후, 워싱스크린장치(50)에서 고압분사되는 세척수로 세척하여 세척된 토양(90)을 1차 선별하고, 세척수에 잔존하는 토양은 다시 1차 저장탱크(60)와 벤튜리관(70)을 거쳐 2차 저장탱크(61)에서 교반작용과 폭기작용을 하여 이송된 세척수는 탈수스크린(80)에서 세척된 토양(91)을 2차로 선별하여 분리한다.The invention by the configuration as described above removes the metal mixed in the contaminated soil in the metal separation device 30, washed with high-pressure spraying washing water in the washing screen device 50 and the first screening the washed soil 90 The soil remaining in the wash water is again washed through the primary storage tank 60 and the venturi tube 70 by agitation and aeration in the secondary storage tank 61 and washed in the dehydration screen 80. The soil 91 is separated by secondary screening.

그리고 탈수스크린(80)에서 배출된 세척수는 다시 하이드로 사이클론(180)을 거쳐 원심분리되어 3차 저장탱크(62)에서 교반작용과 폭기작용을 한 후, 다시 벤튜리관(110)을 거쳐 4차 저장탱크(63)로 이송되어 교반작용과 폭기작용을 반복 실행한다. 이때 3차 저장탱크(62)에는 약품탱크(171)에서 정화제를 공급하여 교반하도록 하고, 또 처리수조저장탱크(40)에서 처리수를 벤튜리관(110)으로 고압분사시킨다.The washed water discharged from the dehydration screen 80 is centrifuged again through the hydrocyclone 180 to perform agitation and aeration in the tertiary storage tank 62, and then to the fourth storage via the venturi tube 110. Transferred to the tank 63, the stirring and aeration are repeated. At this time, the third storage tank (62) is supplied with a purifying agent from the chemical tank (171) to be stirred, and the high-pressure injection of the treated water from the treated tank storage tank (40) to the venturi tube (110).

상기 4차 저장탱크(63)에서 교반된 세척수는 다시 약품저장탱크(191)가 설치된 수처리장치(190)를 거쳐 세척수를 반응, 중화, 응집시켜서 슬러지를 분리시키는 작용을 하고, 응집된 슬러지(150)는 다시 침전호퍼(120)와 농축조(130)를 거쳐 분리되어 스크류 데칸터(140)를 거치면서 슬러지(150)를 원심력으로 완전 분리시켜서 배출하고, 분리된 세척수는 다시 5차 저장탱크(64)를 거쳐 미처 분리되지 못한 슬러지(150)를 다시 교반작용과 폭기작용을 하여 필터 프레스(160)를 거치면서 잔여 슬러지(150)를 분리하여 배출하는 공정을 거치게 된다.
The washing water stirred in the fourth storage tank 63 again acts to separate the sludge by reacting, neutralizing and flocculating the washing water through the water treatment apparatus 190 in which the chemical storage tank 191 is installed, and the aggregated sludge 150. ) Is separated again through the sedimentation hopper 120 and the concentration tank 130 and discharged by completely separating the sludge 150 by centrifugal force while passing through the screw decanter 140, the separated wash water is again the fifth storage tank (64). The sludge 150 that is not separated through the a) is subjected to the stirring and aeration again to pass through the filter press 160 to separate and discharge the remaining sludge 150.

상기와 같이 본 발명은 오염토양을 세척하여 세척선별된 토양과 슬러지를 분리함으로써, 세척선별된 토양을 재활용이나 재사용함으로써 예산을 절감할 수 있도록 하였다.As described above, the present invention is to reduce the budget by washing the contaminated soil by separating the segregated soil and sludge, by recycling or reuse the segregated soil.

10. 호퍼 20, 21. 컨베이어벨트
30. 금속분리장치 40. 처리수조저장탱크
50. 워싱스크린장치 51, 52. 스크린
60. 1차 저장탱크 61, 2차 저장탱크
62. 3차 저장탱크 63. 4차 저장탱크
64. 5차 저장탱크 70, 110. 벤튜리관
80. 탈수스크린 90, 91. 토양
120. 침전호퍼 130. 농축조
140. 스크류 데칸터 150. 슬러지
160. 필터 프레스 170. 약품탱크
180. 하이드로 사이클론 190. 수처리장치
191. 약품저장탱크10. Hopper 20, 21. Conveyor Belt
30. Metal Separation System 40. Treatment Tank Storage Tank
50. Washing screen device 51, 52. Screen
60. Primary storage tank 61, secondary storage tank
62. 3rd Storage Tank 63. 4th Storage Tank
64. 5th Storage Tank 70, 110. Venturi Tube
80. Dewatering Screen 90, 91. Soil
120. Sedimentation Hopper 130. Thickener
140.Screw Decanter 150.Sludge
160. Filter Press 170. Chemical Tank
180. Hydro cyclone 190. Water treatment device
191.Chemical Storage Tank

Claims (6)

오염토양이 투입되는 호퍼(10)와,
상기 호퍼(10)에 투입되어 컨베이어벨트(20)를 타고 이송하는 오염토양에서 금속을 분리하기 위해 마그넷이 설치된 금속분리장치(30)와,
상기 금속분리장치(30)에서 금속이 분리된 오염토양을 컨베이어벨트(21)로 이송하여 처리수조저장탱크(40)에서 공급되는 세척수를 고압 분사시켜서 세척선별된 토양(90)을 분리하여 배출하기 위한 워싱스크린장치(50)와,
상기 워싱스크린장치(50)에서 배출된 세척수를 원심분리로 교반하여 저장하는 1차 저장탱크(60)와,
상기 1차 저장탱크(60)에 저장된 세척수를 고압으로 분사되는 벤튜리관(70)과,
상기 벤튜리관(70)에서 배출된 세척수를 원심분리로 교반하여 저장하는 2차 저장탱크(61)와,
상기 2차 저장탱크(61)에 저장된 세척수를 이송하여 세척선별된 토양(91)을 분리하는 탈수스크린(80)과,
상기 탈수스크린(80)에서 분리된 세척수를 원심분리로 교반하여 저장하는 3차 저장탱크(62)와,
상기 3차 저장탱크(62)에서 저장된 세척수를 고압으로 분사하는 벤튜리관(110)과,
상기 벤튜리관(110)에서 배출된 세척수를 다시 원심분리로 교반하여 저장하는 4차 저장탱크(63)와,
상기 4차 저장탱크(63)에 저장된 세척수를 침전호퍼(120)에서 침전시키고 농축조(130)에서 농축시킨 후 농축된 오염토양에서 슬러지(150)를 선별하여 배출하는 스크류데칸터(140)와,
상기 스크류데칸터(140)에서 분리된 세척수를 원심분리로 교반하여 저장하는 5차 저장탱크(64)와,
상기 5차 저장탱크(64)에 저장된 세척수에서 슬러지(150)를 선별하여 배출하는 필터프레스(160)를 포함하여 구성한 것을 특징으로 하는 오염토양 세척 선별장치.A hopper 10 into which contaminated soil is introduced,
A metal separation device 30 having a magnet installed to separate the metal from the contaminated soil which is introduced into the hopper 10 and is carried on the conveyor belt 20;
The contaminated soil in which the metal is separated from the metal separator 30 is transferred to the conveyor belt 21 to separate and discharge the washed-selected soil 90 by high-pressure spraying the washing water supplied from the treatment tank storage tank 40. Washing screen device 50 for,
A primary storage tank 60 for storing the washing water discharged from the washing screen device 50 by stirring by centrifugation;
A venturi tube 70 spraying the washing water stored in the primary storage tank 60 at a high pressure;
Secondary storage tank 61 for storing by stirring and washing the water discharged from the venturi tube 70 by centrifugation;
A dehydration screen 80 for separating the washing-selected soil 91 by transferring the washing water stored in the secondary storage tank 61;
A tertiary storage tank 62 for storing the washing water separated by the dewatering screen 80 by stirring by centrifugation;
A venturi tube 110 for spraying the washing water stored in the third storage tank 62 at a high pressure;
A fourth storage tank 63 for storing the stirred water discharged from the venturi tube 110 again by stirring by centrifugation;
A screw decanter 140 for sedimenting the washing water stored in the fourth storage tank 63 in the precipitation hopper 120 and concentrating in the concentration tank 130 and then sorting and discharging the sludge 150 from the concentrated contaminated soil;
A fifth storage tank 64 for storing the washing water separated by the screw decanter 140 by stirring by centrifugation;
Soil washing and sorting device comprising a filter press 160 for sorting and discharging the sludge 150 from the wash water stored in the fifth storage tank (64). 제 1항에 있어서,
상기 1차 저장탱크(60)와 3차 저장탱크(62)에 정화제를 투입하기 위한 약품탱크(170)가 각각 구성된 것을 특징으로 하는 오염토양 세척 선별장치.The method of claim 1,
Soil cleaning and sorting device, characterized in that the chemical tank (170) for injecting a purifier into the primary storage tank (60) and tertiary storage tank (62), respectively. 제 1항에 있어서,
상기 탈수스크린(80)과 3차 저장탱크(62) 사이에 하이드로 사이클론(180)을 장착하여 세척선별된 잔여 토양(91)을 분리하여 배출하도록 구성한 것을 특징으로 하는 오염토양 세척 선별장치.The method of claim 1,
A hydrocyclone (180) is installed between the dehydration screen (80) and the tertiary storage tank (62) to separate and discharge the soil selected by washing. 제 1항에 있어서,
상기 4차 저장탱크(63)와 침전 호퍼(120) 사이에 약품 저장탱크(191)가 설치된 수처리장치(190)에서 세척수를 반응, 중화, 응집시키도록 구성한 것을 특징으로 하는 오염토양 세척 선별장치.The method of claim 1,
Soil washing and sorting device, characterized in that configured to react, neutralize, agglomerated the washing water in the water treatment device 190 is installed between the fourth storage tank (63) and the precipitation hopper 120, the chemical storage tank (191). 제 1항에 있어서,
상기 워싱스크린장치(50)에서 분리된 세척수와 필터 프레스(160)에서 분리된 세척수는 3차 저장탱크(62)로, 또 침전호퍼(120)에서 분리된 세척수는 처리수조저장탱크(40)로 순환되도록 구성한 것을 특징으로 하는 오염토양 세척 선별장치.The method of claim 1,
The washing water separated from the washing screen device 50 and the washing water separated from the filter press 160 are the third storage tank 62, and the washing water separated from the precipitation hopper 120 is the treatment tank storage tank 40. Soil washing and sorting device, characterized in that configured to circulate. 제 1항에 있어서,
상기 벤튜리관(70)(110)으로 처리수조저장탱크(40)에서 세척수가 공급되도록 구성한 것을 특징으로 하는 오염토양 세척 선별장치. The method of claim 1,
Soil washing and sorting device, characterized in that configured to be supplied with the wash water from the treatment tank storage tank 40 to the venturi tube (70) (110).
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KR101269213B1 (en) * 2010-11-29 2013-05-30 주식회사 엠에스테크 Method for removing hydro carbon from contaminated soil
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KR101915035B1 (en) * 2018-02-08 2018-11-06 측천산업(주) Remediation of complex contaminated soils comprising drum type heavy metal release reactor
KR101915030B1 (en) * 2018-02-08 2019-01-07 측천산업(주) Drum type heavy metal release reactor for remediation of complex contaminated soils
KR101995214B1 (en) 2018-10-02 2019-07-03 주식회사 효림 Remediation and monitorin system of contaminated soil by soil separation and soil washing and wastewater treatment
KR101995207B1 (en) 2018-10-02 2019-10-17 주식회사 효림 Multi-contaminated soil remediation system by in situ thermal desorption for high temperature heat injection and extraction and oxidation and washing of organic acid

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