KR101284742B1 - A circular disposal method of landfill leachate and apparatus thereof - Google Patents

A circular disposal method of landfill leachate and apparatus thereof Download PDF

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KR101284742B1
KR101284742B1 KR1020110022820A KR20110022820A KR101284742B1 KR 101284742 B1 KR101284742 B1 KR 101284742B1 KR 1020110022820 A KR1020110022820 A KR 1020110022820A KR 20110022820 A KR20110022820 A KR 20110022820A KR 101284742 B1 KR101284742 B1 KR 101284742B1
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landfill
leachate
circulating
treatment
high concentration
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KR20120105171A (en
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이명규
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이명규
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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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/06—Contaminated groundwater or leachate
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/02—Temperature
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/44—Time

Abstract

본 발명은 매립지 침출액의 순환처리방법 및 그 장치에 관한 것이다. 본 발명은 매립지에 매립된 가축 사체나 폐기물 등으로부터 배출되는 고농도 침출액을 외부 열원공급을 통해 60℃ 고온발효와 80℃ 열처리 연계방식으로 병원성미생물을 멸균처리하며, pH 중화처리한 후 고속 분해되도록 분해균을 식종하여 매립지내로 재투입하여 순환처리되도록 구성된다. 따라서, 본 발명은 매립지 인근의 침출수 유출을 방지할 수 있으며, 2차 감염 및 오염을 막을 수 있고 매립지 현장에서 고농도 침출액이 순환처리됨으로써 처리량이 감소하여 외부로 운반 및 처리하는 비용이 절감되는 효과를 제공한다.The present invention relates to a method for circulating a landfill leachate and a device therefor. The present invention sterilizes pathogenic microorganisms in a high-temperature fermentation and 80 ℃ heat-treatment in a high-temperature leachate discharged from landfills and wastes embedded in landfills through an external heat source and sterilizes pathogenic microorganisms after pH neutralization. It is configured to circulate by planting the bacteria and re-introduced into the landfill. Therefore, the present invention can prevent the outflow of leachate near the landfill, prevent secondary infection and contamination, and reduce the throughput to reduce the cost of transport and treatment by reducing the throughput by circulating the high concentration leachate at the landfill site to provide.

Description

매립지 침출액의 순환처리방법 및 그 장치{A circular disposal method of landfill leachate and apparatus thereof}A circular disposal method of landfill leachate and apparatus

본 발명은 매립지 침출액의 순환처리방법 및 그 장치에 관한 것으로서, 특히 매립지 현장에서 속성으로 분해 액화시켜 매립지로 재투입하여 순환시키는 매립지 침출액의 순환처리방법 및 그 장치에 관한 것이다.The present invention relates to a circulating treatment method and apparatus for landfill leachate, and more particularly, to a circulating treatment method and apparatus for landfill leachate for circulating and recirculating into landfill by disassembling and liquefying as a property at a landfill site.

오늘날 인구의 집중과 급속한 산업화로 인하여 폐기물은 양적으로 팽창할 뿐만 아니라 질적인 변화를 초래하여 종전의 비위생 정비방법이나 혐기성위생 매립방식 등과 같은 매립처리방식에 의존할 경우 매립지의 확보난이 가중되고, 침출수 및 악취 등에 의한 주변환경악화가 예상되어 대책마련이 시급한 실정이다.Due to the concentration and rapid industrialization of today's population, waste not only expands quantitatively, but also causes qualitative changes, which reinforces the difficulty of reclaiming landfills when relying on landfill methods such as conventional non-sanitary maintenance methods or anaerobic sanitary landfill methods. It is urgent to prepare countermeasures due to the expected deterioration of the surrounding environment due to bad smells.

더욱이, 구제역 등으로 인해 살처분된 가축 매몰지가 전국에 4000곳 이상이고 매몰지 인근에서 침출수 유출로 2차 감염 및 오염 등의 우려가 지적되고 있다.In addition, there are more than 4,000 landfills killed in the country due to foot-and-mouth disease, and concerns about secondary infections and pollution due to leachate outflow near the landfill.

따라서 폐기물매립지가 적정하게 관리, 운영되지 않으면 국민보건에 직접적인 위해는 물론 수질, 대기, 토양오염의 원인이 되므로 폐기물 매립지의 적정관리 및 운영의 그 필요성이 과거 어느 때보다 절실히 요구되는 상황에서 침출수 발생의 근본적인 원인인 우수와의 접촉차단과, 외부공기와의 차단에 의한 가스, 악취 및 배출억제, 매립지의 조기안정화를 통한 토지이용계획의 합리화 및 매립지 순환 정비 사업이 갖는 혐오시설에 대한 미관상의 문제 등을 기술적으로 해결할 수 있는 방법이 필요한 실정이다.Therefore, if landfills are not properly managed and operated, not only do they directly harm national health, but also cause water quality, air, and soil pollution. Aesthetic Problems for Hate Facilities of the Land Use Plan through the Blocking of Contact with Rainfall, the Prevention of Gas, Odor and Emission by Blocking External Air, and Early Stabilization of Landfills There is a need for a technical solution to such a problem.

이에 본 발명은 상기 문제점들을 해결하기 위하여 착상된 것으로서, 침출수 순환공법을 적용하여 매립지로부터 배출되는 침출액을 속성으로 분해 액화시켜서 매립지로 재투입하여 순환시킬 수 있도록 한 매립지 침출액의 순환처리방법 및 그 장치를 제공함에 있다. Accordingly, the present invention has been conceived to solve the above problems, circulating treatment method and apparatus for landfill leachate so that the leachate discharged from the landfill by using the leachate circulation method to decompose liquefied as a property to circulate by re-introduced into landfill In providing.

이와 같은 목적을 달성하기 위한 본 발명의 매립지 침출액의 순환처리방법은, 매립지의 고농도 침출액을 순환 처리하기 위한 방법에 있어서, (1) 상기 매립지의 고농도 침출액을 배출하여 저장조에 저장하는 단계와, (2) 저장된 고농도 침출액을 외부의 열원공급을 통해 60℃ 고온발효와 80℃ 열처리를 연계시켜 침출액내에 존재하는 미생물들을 멸균처리하는 단계와, (3) 멸균처리된 물질을 중화처리하는 단계와, (4) 고속 분해 액화되도록 중화처리된 물질에 분해균을 식종하는 단계, 및 (5) 분해균 식종된 물질을 상기 매립지로 재투입하는 단계를 포함한다.The method for circulating landfill leachate of the present invention for achieving the above object comprises the steps of: (1) discharging the high concentration leachate of the landfill and storing it in a storage tank; 2) sterilizing the microorganisms present in the leachate by connecting the stored high concentration leachate to 60 ° C. high temperature fermentation and 80 ° C. heat treatment through an external heat source supply, and (3) neutralizing the sterilized material; 4) seeding the decomposed bacteria to the neutralized material for rapid decomposition and liquefaction, and (5) reintroducing the decomposed bacteria seeded material into the landfill.

본 발명의 목적을 달성하기 위한 매립지 침출액의 순환처리장치는, 매립지 침출액의 순환처리장치에 있어서, 상기 매립지 주변을 둘러싸게 설치되어, 매립지 침출액이 흘러나가지 않도록 차단시키는 차수벽과, 상기 차수벽의 각 모서리부분에 설치되어, 매립지 침출액을 배출시키는 침출수 배수관과, 상기 침출수 배수관에서 배출되는 고농도 침출액을 저장하는 저장조와, 상기 저장조에 저장된 고농도 침출액을 상기 매립지로 순환시키기 위해 외부 열원공급을 통해 60℃ 고온발효와 80℃ 열처리를 연계시켜 멸균처리하고 속성으로 분해 액화시키는 순환처리장치, 및 상기 순환처리장치에서 배출되는 물질을 상기 매립지로 재투입시키는 재투입관을 포함한다.The landfill leachate circulation processing apparatus for achieving the object of the present invention, the landfill leachate circulating treatment apparatus, is installed to surround the landfill surrounding, the order wall to block the landfill leachate from flowing out, and each corner of the order wall 60 ℃ high temperature fermentation through an external heat source is installed in the part, the leachate drainage pipe for discharging the landfill leachate, the reservoir for storing the high concentration leachate discharged from the leachate drainage pipe, and the high concentration leachate stored in the reservoir to the landfill And a recirculation treatment apparatus for sterilizing and decomposing and liquefying in association with heat treatment at 80 ° C., and a re-entry tube for re-introducing the substance discharged from the circulation treatment apparatus into the landfill.

본 발명에 따른 매립지 침출액의 순환처리방법 및 그 장치는 다음과 같은 효과를 가진다.The circulation treatment method of the landfill leachate and the apparatus according to the present invention have the following effects.

첫째, 본 발명은 매립지 주변을 둘러서 차수벽을 설치, 운영함으로써 침출수의 유출을 방지하여 매립지의 환경문제를 해결할 수 있다.First, the present invention can solve the environmental problems of the landfill by preventing the outflow of leachate by installing and operating a water barrier around the landfill.

둘째, 본 발명은 고농도 침출액 배출관을 통해 배출되는 고농도 침출액을 60℃ 고온발효와 80℃ 열처리 연계방식을 통해 속성으로 분해 액화시켜 투입관을 통해 매립지로 재투입함으로써 외부로 유출되어 2차 환경오염이 유발될 가능성을 전면 차단할 수 있어 주변의 민원의 발생을 차단할 수 있다.Second, the present invention is to decompose and liquefy the high concentration leachate discharged through the high concentration leachate discharge tube through the 60 ℃ high temperature fermentation and 80 ℃ heat treatment connection method into the landfill through the input pipe to be discharged to the outside to the secondary environmental pollution The possibility of being triggered can be completely blocked, thus preventing the occurrence of surrounding complaints.

셋째, 본 발명은 매립지 현장에서 고농도 침출액이 순환처리됨으로써 처리량이 감소하여 외부로 운반 및 처리하는 비용이 절감된다.Third, the present invention is reduced by the high throughput of leachate circulating in the landfill site to reduce the throughput and transport cost.

도 1 및 도 2는 본 발명에 따른 순환처리장치가 적용된 매립지를 나타내는 단면도 및 평면도,
도 3은 본 발명에 따른 매립지 침출액의 순환처리방법을 설명하기 위한 흐름도.1 and 2 are a cross-sectional view and a plan view showing a landfill to which the circulation treatment device according to the present invention is applied;
Figure 3 is a flow chart for explaining the circulation treatment method of the landfill leachate according to the present invention.

이하, 첨부된 도면들을 참조하여 본 발명의 바람직한 실시예를 상세히 기술하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1 및 도 2는 본 발명에 따른 순환처리장치가 적용된 매립지의 단면도 및 평면도를 각각 보여주는 도면이고, 도 3은 본 발명에 따른 매립지 침출액의 순환처리방법을 설명하기 위한 흐름도이다.1 and 2 are cross-sectional views and a plan view, respectively, of a landfill to which a circulation processing apparatus according to the present invention is applied, and FIG. 3 is a flowchart illustrating a circulation processing method of a landfill leachate according to the present invention.

도 1 및 도 2에 도시된 바와 같이, 매립지(10)는 지표면(G.L)으로부터 대략 5∼6m 깊이의 매립심도를 갖도록 설치되되, 매립지(10)내의 침출수가 하천 등의 인근지역으로 흘러들어가는 것을 차단시키기 위해 차수벽(20)을 땅속에 설치한다.As shown in Figure 1 and 2, the landfill 10 is installed to have a depth of land of about 5-6 m depth from the ground surface (GL), the leachate in the landfill 10 is flowing to the nearby area, such as rivers In order to block the wall 20 is installed in the ground.

차수벽(20)은 도 2에 나타낸 바와 같이, 매립지(10) 주변을 사각형 모양으로 둘러싸도록 하되, 확대 도시한 바와 같이 시트파일(sheet pile) 등과 같은 공법으로 설치된다.As shown in FIG. 2, the order wall 20 surrounds the landfill 10 in a rectangular shape, and is installed by a method such as a sheet pile as shown in an enlarged view.

차수벽(20)의 각 모서리부분에는 침출수 배수관(30)을 설치하여 매립지(10)내 매립된 가축 사체나 폐기물 등으로부터의 침출수가 배출되도록 한다. 침출수 배수관(30) 하단부에는 침출수를 끌어올리도록 펌프(31)가 설치되며, 상단부에는 개폐가능하도록 뚜껑(33)이 설치되게 된다. 여기서, 뚜껑(33)은 배수관(30)을 따라 악취가 올라오거나 우수가 유입되는 것을 차단하는 역할 등을 수행하게 된다.The leachate drainage pipe 30 is installed at each corner of the order wall 20 so that leachate from livestock carcasses and wastes embedded in the landfill 10 is discharged. A pump 31 is installed at the lower end of the leachate drain pipe 30 to raise the leachate, and a lid 33 is installed at the upper end thereof so as to be openable and openable. Here, the lid 33 serves to block odor coming up or rainwater flows along the drain pipe 30.

침출수 배수관(30)에서 배출되는 고농도 침출액은 저장조(40)에 저장된다. 저장조(40)에 저장되는 고농도 침출액은 순환처리장치(50)를 통해 속성으로 분해 액화된 후 재투입관(60)을 통해 매립지(10)로 재투입되게 된다. 순환처리장치(50)에서의 매립지(10) 침출액에 대한 순환처리방법에 대해 도 3을 통해 구체적으로 설명한다.High concentration leachate discharged from the leachate drain pipe 30 is stored in the storage tank (40). The high concentration leaching liquid stored in the storage tank 40 is decomposed and liquefied into a property through the circulation treatment device 50 and then re-introduced into the landfill 10 through the re-entry pipe 60. A circulation treatment method for the landfill 10 leachate in the circulation treatment device 50 will be described in detail with reference to FIG. 3.

침출수 배수관(30)의 내부에 설치된 펌프(31)에 의해 펌핑된 매립지(10)의 고농도 침출액은 저장조(40)에 저장된다(단계 100). 저장된 고농도 침출액은 저장조(40)에서 이송펌프를 이용하여 순환처리장치(50)로 이동시킨다. 고농도 침출액에는 다양한 미생물이 번식하고 있고, 그 가운데 병원성미생물이 포함되어 있어 멸균처리가 필요하다.The high concentration leachate of the landfill 10 pumped by the pump 31 installed inside the leachate drainage pipe 30 is stored in the reservoir 40 (step 100). The stored high concentration leachate is moved from the reservoir 40 to the circulation treatment device 50 using a transfer pump. High concentration leachate is a variety of microorganisms are breeding, among which pathogenic microorganisms contain sterilization treatment.

따라서, 순환처리장치(40)는 외부의 열원공급을 통해 고온을 유지하여 안정화함으로써 침출액 내에 다량 존재하는 병원성 미생물 및 수인성 유발 미생물 등을 멸균처리한다(단계 200). 여기서, 외부의 열원으로는 가스, 전기, 보일러 등의 어떠한 형태든 상관없다. 단계 200의 멸균처리는 1차적으로 병원성미생물의 사멸온도인 60℃에서 1시간 이상 지속적으로 고온 유지시킨 후(단계 210), 2차로 80℃에서 10분간 고온 유지시켜(단계 220) 고농도 침출액에 포함되어 있는 병원성미생물을 모두 사멸시킨다. Therefore, the circulation treatment device 40 maintains and stabilizes the high temperature through the supply of an external heat source to sterilize pathogenic microorganisms and water-induced microorganisms that are present in a large amount in the leachate (step 200). Here, the external heat source may be in any form, such as gas, electricity, or a boiler. Sterilization of step 200 is primarily maintained at a high temperature for 1 hour or more at 60 ° C., which is the killing temperature of pathogenic microorganisms (step 210), and then maintained at a high temperature for 10 minutes at 80 ° C. (step 220). Kill all existing pathogenic microorganisms.

병원성미생물이 사멸된 액비는 pH 수준에 따라 알카리이면 산성으로, 산성이면 알카리로 중화처리한 후(단계 300), 속성으로 분해되도록 바실러스계통에 속하는 분해균을 식종하여(단계 400), 재투입관(60)을 통해 매립지(10) 내에 재투입시킨다(단계 500).The liquid fertilized pathogenic microorganisms are killed by neutralizing with alkaline if acidic and alkali if acidic (step 300), and seeding the degrading bacteria belonging to the Bacillus system to decompose them (step 400). Refilling into landfill 10 via 60 (step 500).

10 : 매립지 20 : 차수벽
30 : 침출수 배수관 40 : 저장조
50 : 순환처리장치 60 : 재투입관10: landfill 20: order wall
30: leachate drain pipe 40: reservoir
50: circulation processing device 60: re-entry pipe

Claims (7)

매립지의 고농도 침출액을 순환 처리하기 위한 방법에 있어서,
(1) 상기 매립지의 고농도 침출액을 배출하여 저장조에 저장하는 단계;
(2) 저장된 고농도 침출액을 외부의 열원공급을 통해 60℃ 고온발효와 80℃ 열처리를 연계시켜 침출액내에 존재하는 미생물들을 멸균처리하는 단계;
(3) 멸균처리된 물질을 중화처리하는 단계;
(4) 고속 분해 액화되도록 중화처리된 물질에 분해균을 식종하는 단계; 및
(5) 분해균 식종된 물질을 상기 매립지로 재투입하는 단계를 포함하는 매립지 침출액의 순환처리방법.In the method for circulating a high concentration leachate of landfill,
(1) discharging the high concentration leachate of the landfill to store in a storage tank;
(2) sterilizing the microorganisms present in the leachate by linking the stored high concentration leachate with 60 ° C high temperature fermentation and 80 ° C heat treatment through an external heat source supply;
(3) neutralizing the sterilized material;
(4) seeding the decomposing bacteria on the neutralized material so as to rapidly decompose and liquefy; And
(5) circulating treatment method of landfill leachate comprising the step of re-injecting the decomposed bacteria seeded material into the landfill. 제 1항에 있어서, 상기 단계 (2)는 1차로 60℃에서 1시간 고온 유지하는 발효처리와 2차로 80℃에서 10분간 고온 유지하는 열처리의 이중 처리를 수행함을 특징으로 하는 매립지 침출액의 순환처리방법.The method of claim 1, wherein the step (2) is a circulating treatment of landfill leachate, characterized in that the dual treatment of the first fermentation treatment to maintain a high temperature at 60 ℃ for 1 hour and the second heat treatment to maintain a high temperature for 10 minutes at 80 ℃ Way. 제 1항에 있어서, 단계 (4)의 상기 분해균은 바실러스계통에 속하는 것을 특징으로 하는 매립지 침출액의 순환처리방법.The method of circulating landfill leachate according to claim 1, wherein the decomposing bacteria of step (4) belong to the Bacillus system. 매립지 침출액의 순환처리장치에 있어서,
상기 매립지 주변을 둘러싸게 설치되어, 매립지 침출액이 흘러나가지 않도록 차단시키는 차수벽;
상기 차수벽의 각 모서리부분에 설치되어 매립지 침출액을 배출시키되, 하단부에 침출액을 끌어올리기 위한 펌프가 설치되며, 상단부에 악취 및 우수 유입을 차단하기 위한 뚜껑이 설치되는 침출수 배수관;
상기 침출수 배수관에서 배출되는 고농도 침출액을 저장하는 저장조;
상기 저장조에 저장된 고농도 침출액을 상기 매립지로 순환시키기 위해 외부 열원공급을 통해 60℃ 고온발효와 80℃ 열처리를 연계시켜 멸균처리하고 속성으로 분해 액화시키는 순환처리장치; 및
상기 순환처리장치에서 배출되는 물질을 상기 매립지로 재투입시키는 재투입관을 포함하는 매립지 침출액의 순환처리장치.In the circulation treatment device of landfill leachate,
It is installed so as to surround the landfill, the barrier wall to block the landfill leachate from flowing out;
A leachate drainage pipe installed at each corner of the order wall to discharge landfill leachate, a pump installed at the lower end of the leachate, and a lid configured to block odor and rainwater inflow at the upper end;
A storage tank storing a high concentration leachate discharged from the leachate drain pipe;
A circulating treatment apparatus for sterilizing and decomposing and liquefying the high-leaching liquor stored in the reservoir in connection with 60 ° C. high temperature fermentation and 80 ° C. heat treatment through an external heat source for circulating the landfill to the landfill; And
And a refilling pipe for re-injecting the substance discharged from the circulation processing device into the landfill. 제 4항에 있어서, 상기 차수벽은 매립지 주변을 사각형 모양으로 둘러싸게 설치되되, 시트파일공법으로 설치됨을 특징으로 하는 매립지 침출액의 순환처리장치.The landfill circulating treatment apparatus of claim 4, wherein the order wall is installed to surround the landfill in a rectangular shape and is installed by a sheet pile method. 삭제delete 제 4항에 있어서, 상기 순환처리장치는 상기 저장조에 저장된 고농도 침출액이 투입되면 외부의 열원공급을 통해 고온 유지시켜 침출액내에 존재하는 미생물들을 멸균처리하고, pH 수준에 따라 중화처리한 후 분해균을 식종하여 상기 재투입관을 통해 매립지로 순환시킴을 특징으로 하는 매립지 침출액의 순환처리장치.
The method of claim 4, wherein the circulation treatment device is a high concentration leachate stored in the storage tank is maintained at a high temperature through an external heat source supply to sterilize the microorganisms present in the leachate, and neutralized according to the pH level and then decomposed bacteria Planting and circulating landfill leachate characterized in that the circulating through the re-entry pipe to landfill.
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CN104671613A (en) * 2015-02-28 2015-06-03 北京科益创新环境技术有限公司 Landfill leachate treatment technology
CN108225432A (en) * 2018-01-18 2018-06-29 常州工学院 Refuse landfill cut-pff wall model measurement device and preparation method thereof

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JPH1176970A (en) * 1997-09-01 1999-03-23 Kubota Corp Resource recovery type landfill disposal
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