KR970002617B1 - Waste water treatment method and apparatus - Google Patents

Waste water treatment method and apparatus Download PDF

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KR970002617B1
KR970002617B1 KR1019940012221A KR19940012221A KR970002617B1 KR 970002617 B1 KR970002617 B1 KR 970002617B1 KR 1019940012221 A KR1019940012221 A KR 1019940012221A KR 19940012221 A KR19940012221 A KR 19940012221A KR 970002617 B1 KR970002617 B1 KR 970002617B1
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wastewater
electron beam
waste water
beam irradiation
wastewater treatment
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KR1019940012221A
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Korean (ko)
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KR950031917A (en
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이원권
어경해
한기철
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삼성엔지니어링 주식회사
안덕기
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/305—Treatment of water, waste water, or sewage by irradiation with electrons
    • 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
    • C02F1/72—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
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00—Aeration of stretches of water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/36—Organic compounds containing halogen

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physical Water Treatments (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

This invention provides waste water treatment process and device using electronic beam which generates ozone-containing air stream. Said ozone-containing air stream is flowed into waste water to produce bubble, so it enhances the efficiency of electronic beam. Waste water device is comprised with electronic beam irradiator(1), waste water treatment reservoir(2), thin plate(9) having holes to prevent the overheat of electronic beam irradiator(1).

Description

폐수처리방법 및 장치Wastewater Treatment Method and Apparatus

제 1 도는 본 발명의 폐수처리방법을 실시하기 위한 장치의 개략도.1 is a schematic diagram of an apparatus for implementing the wastewater treatment method of the present invention.

제 2 도는 제1도 장치의 변형예를 예시한 개략도.2 is a schematic diagram illustrating a modification of the FIG. 1 device.

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

1 : 전자빔 조사장치 10 : 인입구1: electron beam irradiation device 10: inlet

2 : 처리조 11 : 배출구2: treatment tank 11: outlet

12 : 도관 4,5 : 격벽12: conduit 4, 5: bulkhead

13 : 폭기장치 6,7,8 : 방13: aeration device 6, 7, 8: room

본 발명은 난분해성 물질을 함유한 폐수, 특히 염소계 유기 화합물을 함유한 폐수에 전자선을 조사함과 아울러 오존을 통기시켜 폐수에 함유된 난분해성 물질을 분해하거나 생분해가능한 무독성의 물질로 전환시켜 처리하는 폐수처리방법 및 장치에 관한 것이다.The present invention is directed to treating wastewater containing hardly decomposable substances, in particular, wastewater containing chlorine-based organic compounds, and by treating ozone with aeration to decompose the hardly degradable substances contained in the wastewater or convert them into biodegradable nontoxic substances. It relates to a wastewater treatment method and apparatus.

일반적으로 산업폐수나 생활하수등에는, 화학적으로 안정하여 다른 화학물질과의 반응이나 광화학적 반응이 잘 일어나지 않으며 미생물에 의해 성장기질로 섭취되지 않는 염소계 유기 화합물과 같은 난분해성 물질이 함유되어 응집침전을 통한 슬러지의 소각, 매립등에 의한 종래의 폐수처리방법으로는 공기, 토양 및 지하수 오염등의 환경문제 해결이 어렵다.In general, industrial wastewater and domestic sewage contain chemically stable, hardly decomposable substances such as chlorine-based organic compounds which are not easily reacted with other chemicals or photochemical reactions and are not ingested as growth substrates by microorganisms. The conventional wastewater treatment method by incineration, landfilling, etc. of sludge is difficult to solve environmental problems such as air, soil and groundwater pollution.

또한, 염소계 유기 화합물은 잠재적인 독성 및 발암성을 가지므로 각국에서는 이들 물질의 배출허용기준을 법적으로 엄격하게 규제하고 있다.In addition, since chlorine-based organic compounds have potential toxicity and carcinogenicity, countries have strict restrictions on the emission limit of these substances.

폐수중에 함유된 난분해성 물질, 특히 염소계 유기 화합물을 효율적으로 제거하기 위한 방법이 요구되어 선진 각국에서는 이에 대한 연구가 활발하게 진행되어 왔다. 이에 따라 고에너지의 방사선 또는 전자빔을 폐수에 조사하면 물분자로부터 e- ag, H,OH, H+,OH-과 같은 반응성이 콘 라디칼(radical)이 생성되고 이에 의해 폐수에 함유된 난분해성 물질의 분자간 결합이 끊어지거나 새로운 결합이 헝성되면서 기존의 물질과는 물리적, 화학적 특성이 다른 물질이 생성되는 것이 밝혀졌으며, 종래 산화력이 커서 탈취 및 살균용으로 널리 사용된 오존을 이용한 유기 화합물의 산화분해에 의한 폐수처리방법이 연구되고 있다.There is a need for a method for efficiently removing hardly decomposable substances, particularly chlorine-based organic compounds, contained in the wastewater. As a result, irradiating high-energy radiation or electron beams to the wastewater generates reactive cone radicals such as e - ag , H, OH, H + , OH - from the water molecules, thereby making them difficult to decompose in the wastewater. The breakdown of the intermolecular bonds and the formation of new bonds resulted in the formation of materials with different physical and chemical properties from the existing ones. The oxidative decomposition of organic compounds using ozone, which is widely used for deodorization and sterilization due to its high oxidative power, Wastewater treatment method has been studied.

그러나, 방사선 및 전자빔을 이용한 처리방법의 경우 안전에 주의해야 하고, 폐수의 유효 투과깊이가 조사량의 크기에 대한 함수로 나타나므로 경제성이 없거나 폐수처리효율이 낮은 문제가 있었다.However, in the case of the treatment method using the radiation and electron beam, care should be taken, and since the effective permeation depth of the wastewater appears as a function of the size of the irradiation dose, there is a problem of economic efficiency or low wastewater treatment efficiency.

본 발명의 목적은 전자빔을 폐수에 조사함과 아울러 조사된 전자빔에 의해 생성되는 오존을 함유한 공기를 폐수에 통기시켜 기포가 발생되게 하여 전자빔 조사의 효율성을 높여 폐수의 처리효율을 경제적으로 개선한 폐수처리방법을 제공하는 것이다.An object of the present invention is to irradiate the wastewater with the electron beam and to vent air containing ozone generated by the irradiated electron beam to the wastewater to generate bubbles, thereby improving the efficiency of the electron beam irradiation to economically improve the treatment efficiency of the wastewater. It is to provide a wastewater treatment method.

본 발명의 다른 목적은 상기 폐수처리방법을 효율적으로 수행하기 위한 폐수처리장치를 제공하는 것이다.Another object of the present invention is to provide a wastewater treatment apparatus for efficiently performing the wastewater treatment method.

본 발명에 따른 폐수처리방법은 폐수처리조에 폐수유동방향에 가로로 배열된 복수개의 격벽위로 폐수가 넘쳐 흐르도록 하며, 처리조 위에 장치된 전자빔 조사장치로부터 조사된 전자빔이 폐수처리조와 전자빔 조사장치 사이의 공기층을 투과하는 동안 생성된 오존을 전자빔 조사장치의 냉각용으로 공급한 압축공기에 의해 배출시켜 폐수처리조로 공급하여 폐수를 폭기시켜 그에 따라 발생된 기포에 전자빔을 조사하여 전자빔 투과효율을 증대시켜 폐수처리가 효율적으로 수행되도록 한다.In the wastewater treatment method according to the present invention, the wastewater flows over the plurality of partition walls arranged horizontally in the wastewater flow direction in the wastewater treatment tank, and the electron beam irradiated from the electron beam irradiation apparatus installed on the treatment tank is disposed between the wastewater treatment tank and the electron beam irradiation apparatus. The ozone generated while penetrating the air layer of the gas is discharged by compressed air supplied for cooling of the electron beam irradiating device and supplied to the wastewater treatment tank to aeration of the wastewater, and the electron beam is irradiated to the bubbles thus generated to increase the electron beam transmission efficiency. Ensure that wastewater treatment is carried out efficiently.

본 발명의 방법을 수행하기 위한 한 실시예의 폐수처리장치에 첨부도면을 참고하여 보다 상세히 설명하기로 한다.With reference to the accompanying drawings in the wastewater treatment apparatus of an embodiment for carrying out the method of the present invention will be described in more detail.

제 1 도는 본 방법의 방법을 수행하기 위한 장치를 개략적으로 예시하고 있다.1 schematically illustrates an apparatus for performing the method of the present method.

전자빔 조사장치(1)밑에 이격되어 폐수처리조(2)가 배치되고, 전자빔 조사장치(1)와 폐수처리조(2)는 밀폐되어 있다. 폐수처리조(2)에는 폐수유입구(3)로부터 유입되는 폐수의 흐름방향에 가로로 2개의 격벽(4,5)이 이격설치되어 폐수처리조(2)를 3개의 방(6,7,8)으로 형성한다. 또한, 전자빔 조사장치(1)의 하단에 제공된 복수의 구멍이 형성된 박판(9)이 전자빔 조사시 과열되는 것을 방지하도록 압축공기가 인입구(10)를 통해 공급되어 배출구(11)을 통해 배출되며, 전자빔 조사장치(1)와 폐수 사이의 공기에서 고에너지의 전자빔에 의해 생성되는 오존(O3)도 냉각용으로 공급된 압축공기와 함께 배출되며, 이 오존을 함유한 배출공기를 우회시켜 도관(12)을 통해 폐수처리조(2)의 각기 방(6,7,8)으로 통하게 하여 그 저면에 설치된 폭기장치(13)에 의해 폐수를 폭기시킨다.The wastewater treatment tank 2 is arranged below the electron beam irradiation apparatus 1, and the electron beam irradiation apparatus 1 and the wastewater treatment tank 2 are sealed. The wastewater treatment tank 2 is provided with two partitions 4 and 5 spaced apart from each other in the flow direction of the wastewater flowing from the wastewater inlet 3 so that the wastewater treatment tank 2 can be divided into three rooms (6, 7, 8). To form). In addition, compressed air is supplied through the inlet port 10 to be discharged through the inlet port 11 to prevent the thin plate 9 having a plurality of holes provided at the lower end of the electron beam irradiation device 1 from being overheated during the electron beam irradiation. The ozone (O 3 ) generated by the high-energy electron beam is also discharged from the air between the electron beam irradiator 1 and the wastewater together with the compressed air supplied for cooling. 12), the waste water is aerated by the aeration apparatus 13 provided on the bottom surface of the wastewater treatment tank 2 through the rooms 6, 7, and 8, respectively.

처리조(2)에서 폐수유입구(3)으로부터 계속적인 폐수유입으로 폐수가 방(6)에 가득차면 격벽(4,5)을 넘어 인접한 방(7,8)으로 유입된다. 이때 격벽(4,5)을 넘쳐 흐르는 폐수의 두께가 전자빔 조사장치(1)의 용량에 대하여 3-6mm/1MeV가 되도록 폐수의 흐름을 처리조(2)의 용량을 감안하여 결정하는 것이 바람직하다. 이러한 구성으로 격벽(4,5)을 넘은 폐수는 모두 전자빔 조사장치(1)의 유효 투과영역에 포함되므로 처리조(2)를 거쳐 흐르는 모든 폐수는 오존에 의한 분해작용과 함께 전자빔에 조사되어 폐수에 함유된 염소계 유기 화합물과 같은 난분해성 물질이 분해 또는 인체에 무해한 무기물로 효율적으로 전환된다.In the treatment tank 2, when the wastewater fills the room 6 by continuous wastewater inflow from the wastewater inlet 3, it flows into the adjacent rooms 7, 8 beyond the partitions 4, 5. At this time, it is preferable to determine the flow of the wastewater in consideration of the capacity of the treatment tank 2 so that the thickness of the wastewater flowing over the partitions 4 and 5 becomes 3-6 mm / 1MeV with respect to the capacity of the electron beam irradiation device 1. . In this configuration, all the wastewater passing through the partition walls 4 and 5 is included in the effective transmission area of the electron beam irradiating apparatus 1, so that all wastewater flowing through the treatment tank 2 is irradiated with the electron beam along with decomposition by ozone and thus wastewater. Hardly decomposable substances, such as chlorine-based organic compounds contained in, are efficiently converted into inorganic substances that are not decomposed or harmless to the human body.

<표 1> Black 5, Red 120 염료의 조사실험결과(TOC,mg/L)<Table 1> Irradiation test results of Black 5 and Red 120 dyes (TOC, mg / L)

* 조사량 각각 5,000kGy,* 5,000kGy dose each

* * 시료양, 실험 1: 100mL, 실험 2: 200mL, 실험 3: 500mL* * Sample volume, Experiment 1: 100 mL, Experiment 2: 200 mL, Experiment 3: 500 mL

* * * ( )안은 오존폭기없이 한 정지시료조사* * * In parentheses, static sample investigation without ozone aeration

(표 2) TCE, PCE 수용액의 조사실험결과(mg/L)Table 2 Survey Results of TCE and PCE Aqueous Solution (mg / L)

* 조사량 : 100kGy, 시료양 : 250mL* Dose: 100kGy, sample volume: 250mL

** ( )안은 오존폭기없이 한 정지시료조사** In the (), a stationary sample survey without ozone aeration

표 1과 2는 1MeV,40mA의 전자빔 조사장치를 사용하여 본 발명에 따라 염료 폐수 및 염소계 유기 화합물 폐수를 처리한 시험결과를 나타내고 있으며, 총유기탄소(TOC)의 현저한 제거효과를 나타내고 있다. 특히, 본 발명에 따라 전자빔 조사시 발생한 오존으로 폐수를 폭기시킨 결과와 전자빔만을 조사한 결과 TOC제거 효과가 현저한 차이가 있음을 나타내어 본 발명의 효과를 입증하고 있다. 표 1에서 실험 1에 비하여 실험 2 및 3의 제거효과가 떨어지는 것은 각 실험에서 동일 크기의 용기를 사용하여 실험 1에서는 시료의 깊이가 전자빔의 유효 투과깊이인 약 5mm인 반면, 실험 2와 3에서는 그 깊이가 2배 및 5배로 증가함에 따른 전자빔 조사효율이 처리할 폐수의 깊이에 큰 영향을 받는 것을 입증하는 것으로, 이러한 문제를 해결하기 위하여 본 발명의 처리장치에서는 폐수를 오존을 함유한 공기로 폭기시킴과 함께 처리조(2)에 격벽(4,5)를 설치하여 폐수가 격벽 위 약 3-6mm의 두께로 넘쳐 흐르도록 하여 전자빔 조사효율이 항상 최대가 될 수 있다.Tables 1 and 2 show the test results of treating the dye wastewater and the chlorine organic compound wastewater according to the present invention using an electron beam irradiation apparatus of 1MeV, 40mA, and show a significant removal effect of total organic carbon (TOC). In particular, according to the present invention, the result of aeration of the wastewater with ozone generated during the electron beam irradiation and the irradiation of the electron beam alone show that the TOC removal effect is remarkably different, proving the effect of the present invention. In Table 1, the removal effect of Experiments 2 and 3 was lower than that of Experiment 1, using the same sized container in each experiment. In Experiment 1, the depth of the sample was about 5 mm, which is the effective penetration depth of the electron beam. It is proved that the electron beam irradiation efficiency is greatly affected by the depth of the wastewater to be treated as its depth is increased by 2 and 5 times. In order to solve this problem, in the treatment apparatus of the present invention, the wastewater is treated with ozone-containing air. In addition to the aeration, the partitions 4 and 5 are installed in the treatment tank 2 so that the waste water overflows to a thickness of about 3-6 mm above the partition walls so that the electron beam irradiation efficiency can always be maximized.

제 2 도에서 볼 수 있듯이, 본 발명의 폐수처리방법을 실시하기 위한 제 1 도의 처리장치 배출구(14)측에 응집침전조(15)를 설치하고 이어서 그 배출구측에 오존반응조(16)를 설치함으로써 처리조(2)에서의 전자빔 및 오존처리로 분해되거나 무해한 무기물로 전환된, 폐수에 함유된 염소계 유기 화합물 등의 오염물질을 응집침전시키고 미처리된 상기 오염물질을 최종 오존처리하여 배출시키는 것도 바람직하다.As can be seen from FIG. 2, by installing the coagulation sedimentation tank 15 on the treatment apparatus outlet 14 side of FIG. 1 for implementing the wastewater treatment method of the present invention, and then installing the ozone reaction tank 16 on the outlet side. It is also preferable to coagulate and sediment contaminants such as chlorine-based organic compounds contained in the wastewater, which are decomposed or converted into harmless inorganic substances by the electron beam and ozone treatment in the treatment tank 2, and finally, the untreated contaminants are discharged by final ozone treatment. .

또한, 제 1 도와 2 도의 처리조(2)의 방(6,7,8)들을 계단식으로 구성하거나 격벽(4,5)들의 높이가 차이가 나게 구성할 수도 있다.In addition, the rooms 6, 7, and 8 of the treatment tank 2 of FIG. 1 and FIG. 2 may be cascaded, or the height of the partitions 4 and 5 may be different.

본 발명의 구성에 따라 유기 염료를 포함한 염소계 유기 화합물과 같은 난분해성 물질을 함유하는 폐수에 전자빔을 조사함과 동시에 그에 의해 공기중에서 발생되는 오존으로 폐수를 폭기시키도록 하고 폐수가 처리조(2)에서 격벽위 약 3-6mm의 전자빔의 유효 투과깊이로 흐르게 한 구성으로 효율적으로 최대의 폐수처리효과를 얻을 수 있는 잇점이 있다.According to the constitution of the present invention, the wastewater containing hardly decomposable substances such as chlorine-based organic compounds including organic dyes is irradiated with an electron beam, thereby aeration of the wastewater with ozone generated in the air, and the wastewater treatment tank (2) In this configuration, it is possible to efficiently obtain the maximum wastewater treatment effect by allowing the effective penetration depth of the electron beam of about 3-6 mm above the partition wall.

본 발명 폐수처리장치의 실시예로서 하나의 전자빔 조사장치(1)에 대해 하나의 처리조(2)를 구성하였으나, 이것은 최소 단위로서 처리할 폐수용량에 따라 이러한 구성의 처리장치를 복수개 병렬로 설치하여 사용할 수도 있다.As an embodiment of the wastewater treatment apparatus of the present invention, one treatment tank 2 is configured for one electron beam irradiating apparatus 1, but this is a minimum unit and a plurality of treatment apparatuses having such a configuration are installed in parallel according to the wastewater capacity to be treated. It can also be used.

Claims (3)

염소계 유기 화합물과 같은 난분해성 물질을 함유한 폐수를 처리하는 폐수처리방법에 있어서, 전자빔조사장치(1)로부터의 전자빔을 폐수에 조사함과 동시에 전자빔에 의해 생성되는 오존을 함유한 공기로 폐수를 폭기시키며, 전자빔 조사시 처리할 폐수가 폐수처리조(2)에 설치된 격벽위로 전자빔 조사장치의 용량에 대하여 3-6mm/MeV의 깊이 비율로 유동하도록 하는 것을 특징으로 하는 폐수처리방법.In a wastewater treatment method for treating wastewater containing hardly decomposable substances such as chlorine-based organic compounds, the wastewater is irradiated with the ozone-containing air generated by the electron beam while irradiating the wastewater with an electron beam from the electron beam irradiation apparatus 1. A waste water treatment method characterized in that the aeration, the waste water to be treated during the electron beam irradiation flows at a depth ratio of 3-6mm / MeV to the capacity of the electron beam irradiation apparatus on the partition wall installed in the wastewater treatment tank (2). 염소계 유기 화합물과 같은 난분해성 물질을 함유한 폐수를 처리하는 폐수처리장치에 있어서, 전자빔조사장치(1)와 그 밑에 밀폐상태로 이격되어 설치된 폐수처리조(2)를 포함하며, 상기 처리조(2)에는 폐수의 흐름에 대하여 가로방향으로 서로 이격되게 복수개의 격벽(4,5)이 설치되고, 전자빔 조사장치(1)의 냉각을 위해 공급되는 압축공기와 전자빔 조사에 의해 발생되는 오존을 우회시켜 폐수를 폭기시키도록 상기 처리조(2)의 공기배출구(11)는 도관(12)을 통하여 처리조(2)의 저면에 설치된 폭기장치(13)에 연결된 것을 특징으로 하는 폐수처리장치.A wastewater treatment apparatus for treating wastewater containing a hardly decomposable substance such as a chlorine-based organic compound, the wastewater treatment apparatus including an electron beam irradiation apparatus (1) and a wastewater treatment tank (2) spaced below it in a sealed state. 2) is provided with a plurality of partitions (4, 5) spaced apart from each other in the horizontal direction with respect to the flow of the waste water, bypasses ozone generated by the compressed air and electron beam irradiation supplied for cooling the electron beam irradiation device (1). And an air outlet (11) of the treatment tank (2) is connected to an aeration device (13) installed at the bottom of the treatment tank (2) through a conduit (12) to aeration the waste water. 제 2 항의 폐수처리장치에 있어서, 폐수처리조(2)로부터 처리된 폐수배출구(14)측에 응집침전조(15)와 우회도관(12)에 연결된 오존반응조(16)가 연결된 것을 특징으로 하는 폐수처리장치.The wastewater treatment apparatus according to claim 2, wherein the wastewater discharge port (14) treated by the wastewater treatment tank (2) is connected to an agglomeration sedimentation tank (15) and an ozone reaction tank (16) connected to the bypass conduit (12). Processing unit.
KR1019940012221A 1994-05-31 1994-05-31 Waste water treatment method and apparatus KR970002617B1 (en)

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