KR100797027B1 - Apparatus for wastewater treatment by using ultraviolet light and oxidative species produced in dielectric barrier discharge tube, and method of wastewater treatment using this - Google Patents
Apparatus for wastewater treatment by using ultraviolet light and oxidative species produced in dielectric barrier discharge tube, and method of wastewater treatment using this Download PDFInfo
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 74
- 230000004888 barrier function Effects 0.000 title claims abstract description 49
- 230000001590 oxidative effect Effects 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000002351 wastewater Substances 0.000 claims abstract description 72
- 239000010453 quartz Substances 0.000 claims abstract description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 18
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 32
- 239000005416 organic matter Substances 0.000 claims description 29
- 239000011941 photocatalyst Substances 0.000 claims description 24
- 239000007789 gas Substances 0.000 claims description 21
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 13
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 4
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 3
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 150000003254 radicals Chemical class 0.000 claims description 3
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 claims 1
- 239000011368 organic material Substances 0.000 abstract description 10
- 230000001699 photocatalysis Effects 0.000 abstract description 9
- 230000004913 activation Effects 0.000 abstract description 4
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
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- 230000000694 effects Effects 0.000 description 11
- 230000003647 oxidation Effects 0.000 description 11
- 238000007254 oxidation reaction Methods 0.000 description 11
- ZXGIHDNEIWPDFW-UHFFFAOYSA-M acid red 4 Chemical compound [Na+].COC1=CC=CC=C1N=NC1=CC(S([O-])(=O)=O)=C(C=CC=C2)C2=C1O ZXGIHDNEIWPDFW-UHFFFAOYSA-M 0.000 description 10
- BLFZMXOCPASACY-UHFFFAOYSA-N 1,4-bis(propan-2-ylamino)anthracene-9,10-dione Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C(NC(C)C)=CC=C2NC(C)C BLFZMXOCPASACY-UHFFFAOYSA-N 0.000 description 9
- WLDHEUZGFKACJH-ZRUFZDNISA-K Amaranth Chemical compound [Na+].[Na+].[Na+].C12=CC=C(S([O-])(=O)=O)C=C2C=C(S([O-])(=O)=O)C(O)=C1\N=N\C1=CC=C(S([O-])(=O)=O)C2=CC=CC=C12 WLDHEUZGFKACJH-ZRUFZDNISA-K 0.000 description 9
- 235000012735 amaranth Nutrition 0.000 description 9
- -1 radical hydroxide Chemical class 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
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- 239000012153 distilled water Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 1
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- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 238000002525 ultrasonication Methods 0.000 description 1
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/4608—Treatment of water, waste water, or sewage by electrochemical methods using electrical discharges
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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
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
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- General Chemical & Material Sciences (AREA)
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Abstract
Description
도 1은 본 발명의 폐수 처리장치의 구성을 도식화한 개략도이고, 1 is a schematic diagram showing the configuration of a wastewater treatment apparatus of the present invention,
도 2는 처리시간에 따른 유기물(Acid Red 4) 제거효율을 도시한 그래프이고, 2 is a graph showing the removal efficiency of organic matter (Acid Red 4) with the treatment time,
도 3은 처리시간에 따른 유기물(Acid Red 27) 제거효율을 도시한 그래프이고, 3 is a graph showing the removal efficiency of the organic matter (Acid Red 27) according to the treatment time,
도 4는 전압을 변화시키며 측정한 유기물(Reactive Blue 4)의 농도변화를 도시한 그래프이고, 4 is a graph illustrating a change in concentration of an organic material (reactive blue 4) measured by changing a voltage.
도 5는 전압을 변화시키며 유전체장벽 방전관에서 방출되는 자외선의 강도를 측정하여 도시한 그래프이다. 5 is a graph illustrating the measurement of the intensity of ultraviolet light emitted from a dielectric barrier discharge tube while varying a voltage.
본 발명은 폐수처리 장치 및 이를 이용한 폐수처리 방법에 관한 것으로서, 보다 상세하게는 금속봉 및 이를 둘러싸는 석영관으로 이루어진 유전체방벽 방전관, 상기 방전관의 상단에 고전압 발생기(AC) 및 상기 방전관의 주변과 폐수처리 장치의 내부에 원통형의 광촉매망을 포함하는 폐수처리 장치 및 상기 폐수처리 장치를 이용한 폐수처리 방법에 관한 것이다.The present invention relates to a wastewater treatment apparatus and a wastewater treatment method using the same, and more particularly, to a dielectric barrier discharge tube including a metal rod and a quartz tube surrounding the wastewater, a high voltage generator (AC) on an upper end of the discharge tube, and the wastewater around the discharge tube. A wastewater treatment apparatus including a cylindrical photocatalyst network in a treatment apparatus and a wastewater treatment method using the wastewater treatment apparatus.
폐수중의 유기물들을 제거하기 위한 종래의 방법으로서 초임계 유체 산화, 전기화학반응, 오존산화, 전자빔조사공정, 자외선 조사 공정, 초음파처리, 자외선광촉매산화 등 다양한 종류의 산화기술들이 알려져 있으며, 유기물의 제거성능을 향상시키고 다양한 유기물로 적용범위를 확대시키기 위해 여러 산화기술들을 결합하여 사용하기도 한다. 예를 들면, 자외선광촉매 산화기술과 오존산화기술의 결합, 초음파처리기술과 오존산화기술의 결합 등을 통해 유기물의 제거성능이 향상되고 적용범위가 확대될 수 있다. 위에 언급한 여러 가지 폐수처리 기술들은 단독으로 사용할 경우 처리할 수 있는 유기물이 제한적이고 처리성능도 좋지 않다. 이런 문제를 해결하기 위해 여러 공정들을 결합하여 사용할 경우 전기에너지 사용량이 지나치게 증가하며 장치가 복잡해지고 운전조건과 장치운영이 까다로워지므로 실용화하는 데 많은 문제점이 있다.Conventional methods for removing organic matter from wastewater are known as various oxidation techniques such as supercritical fluid oxidation, electrochemical reaction, ozone oxidation, electron beam irradiation process, ultraviolet irradiation process, ultrasonication, ultraviolet photocatalytic oxidation, etc. Several oxidation techniques are also used in combination to improve removal performance and to extend the range of applications to various organics. For example, the combination of the ultraviolet photocatalytic oxidation technique and the ozone oxidation technique, the combination of the ultrasonic treatment technique and the ozone oxidation technique, etc., may improve the removal performance of the organic material and expand the scope of application. The various wastewater treatment techniques mentioned above have limited organic matters and poor treatment performance when used alone. In order to solve this problem, there are many problems in practical use because the combined use of several processes increases the amount of electrical energy excessively, complicates the device, and makes operating conditions and device operation difficult.
이에, 본 발명자들은 장치를 단순화시켜 전력소모량을 감소시키고 하나의 장치가 두 가지 이상의 효과를 낼 수 있도록 하여 폐수처리 성능을 극대화할 수 있도 록 하는 폐수 처리 장치 및 방법을 찾고자 노력하던 중 유전체 장벽 방전을 이용하면 여러 종류의 산화성 성분들과 275-400 ㎚ 범위의 다양한 파장을 가진 자외선을 폐수처리에 효과적으로 이용할 수 있어서 산화성 성분들에 의한 산화효과, 자외선처리효과, 광촉매 활성화에 의한 효과 등 복합적인 효과가 얻어지므로 폐수내의 유기물 처리 성능이 크게 증가하며 전력소모도 감소될 수 있음을 확인함으로써 본 발명을 완성하였다.Accordingly, the present inventors have tried to find a wastewater treatment apparatus and method that can simplify the apparatus to reduce the power consumption and allow one apparatus to have two or more effects, thereby maximizing the wastewater treatment performance. By using it, UV rays with various wavelengths and various wavelengths in the range of 275-400 ㎚ can be effectively used for wastewater treatment, so that the complex effects such as oxidation effect by oxidizing components, UV treatment effect and photocatalytic activation The present invention was completed by confirming that the organic matter treatment performance in the wastewater can be greatly increased and power consumption can be reduced.
본 발명의 목적은 산화성 성분들에 의한 산화효과, 자외선처리효과, 광촉매 활성화에 의한 효과 등에 의한 폐수내의 유기물 처리 성능이 크게 증가하며 전력소모도 감소된 폐수처리 장치를 제공하는 것이다.SUMMARY OF THE INVENTION An object of the present invention is to provide a wastewater treatment apparatus which greatly increases organic matter treatment performance in wastewater due to oxidation effects by oxidizing components, ultraviolet treatment effect, photocatalytic activation, and the like, and reduces power consumption.
본 발명의 또 다른 목적은 상기 폐수처리 장치를 효과적으로 사용하기 위한 방법을 제공하는 것이다.Another object of the present invention is to provide a method for effectively using the wastewater treatment apparatus.
상기 목적을 달성하기 위하여, 본 발명은 폐수처리 장치의 중앙부에 폐수내에 담겨지며 고전압을 금속봉에 인가하여 석영관 내부에 강한 전기 방전을 일으켜 산화성 성분 및 자외선을 발생시키는 금속봉 및 이를 둘러싸는 석영관으로 이루어진 유전체방벽 방전관, 상기 방전관의 상단에 고전압 발생기(AC) 및 상기 방전관의 주변과 폐수처리 장치의 내부에 원통형의 광촉매망을 포함하는 폐수처리 장치를 제 공한다.In order to achieve the above object, the present invention is a metal rod that is contained in the wastewater in the central portion of the wastewater treatment apparatus and applies a high voltage to the metal rod to generate a strong electric discharge inside the quartz tube to generate oxidative components and ultraviolet rays, and to surround the quartz tube. Provided is a dielectric barrier discharge tube, a high voltage generator (AC) at the top of the discharge tube and a wastewater treatment apparatus including a cylindrical photocatalyst network around the discharge tube and inside the wastewater treatment apparatus.
또한, 본 발명은 상기 폐수처리 장치를 이용한 폐수처리 방법을 제공한다.In addition, the present invention provides a wastewater treatment method using the wastewater treatment apparatus.
이하, 본 발명을 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail.
본 발명은 유전체장벽 방전관에서 발생된 자외선과 산화성 성분들이 폐수내의 유기물들을 산화시켜 제거할 수 있도록 하는 폐수처리 장치 및 방법에 관한 것이다.The present invention relates to a wastewater treatment apparatus and method for allowing ultraviolet rays and oxidative components generated in a dielectric barrier discharge tube to oxidize and remove organic substances in wastewater.
본 발명은 ⅰ) 폐수처리 장치의 중앙부에 폐수내에 담겨지며 고전압을 금속봉에 인가하여 석영관 내부에 강한 전기 방전을 일으켜 산화성 성분 및 자외선을 발생시키는 금속봉 및 이를 둘러싸는 석영관으로 이루어진 유전체방벽 방전관, ⅱ) 상기 방전관의 상단에 고전압 발생기(AC) 및 ⅲ) 상기 방전관의 주변과 폐수처리 장치의 내부에 원통형의 광촉매망을 포함하는 폐수처리 장치를 제공한다.The present invention is a dielectric barrier discharge tube consisting of a metal rod immersed in the wastewater in the central portion of the wastewater treatment apparatus and applying a high voltage to the metal rod to generate a strong electric discharge inside the quartz tube to generate oxidative components and ultraviolet rays, and a quartz tube surrounding the same. Ii) a high voltage generator (AC) at the top of the discharge tube and iii) a wastewater treatment apparatus including a cylindrical photocatalyst network in the periphery of the discharge tube and inside the wastewater treatment apparatus.
본 발명의 폐수처리 장치에 있어서, 상기 유전체장벽 방전관 입구에는 공기를 주입하기 위한 공기입구를, 하단에는 출구의 산화성 성분들을 함유하고 있는 기체를 미세한 가포형태로 폐수 내에 분산시켜 위한 기체 확산기를 포함하는 것이 바람직하다. 또한, 본 발명의 폐수처리 장치에 있어서, 상기 광촉매망은 알루미늄 망에 이산화티타늄이 코팅되는 것이 바람직하며, 상기 금속봉은 구리봉인 것이 바람직하다.In the wastewater treatment apparatus of the present invention, the inlet of the dielectric barrier discharge tube includes an air inlet for injecting air, and a gas diffuser for dispersing gas containing oxidizing components of the outlet in the wastewater in the form of fine bubbles. It is preferable. In the wastewater treatment apparatus of the present invention, the photocatalyst network is preferably coated with titanium dioxide on an aluminum network, and the metal rod is preferably a copper rod.
본 발명은 석영관과 금속봉으로 이루어진 유전체장벽 방전관을 접지되어 있는 폐수에 담가 놓고, 고전압을 금속봉에 인가하여 석영관 내에서 강한 전기 방전을 일으켜 각종 산화성 성분들과 자외선을 발생시킨다. 산화성 성분들은 미세한 기포형태로 폐수 내에 분산되며, 자외선은 폐수를 직접 조사시키기도 하고 폐수 내에 설치된 광촉매를 활성화시키기도 한다. 이와 같이 본 발명은 유전체장벽 방전관을 폐수에 담가 유전체장벽 방전관에서 발생되는 산화성 성분들과 자외선의 복합적인 효과로 인해 폐수 중의 유기물이 빠르게 제거되도록 하는 것을 특징으로 하는 폐수 처리 장치를 제공한다.In the present invention, a dielectric barrier discharge tube consisting of a quartz tube and a metal rod is immersed in the grounded wastewater, and a high voltage is applied to the metal rod to generate a strong electric discharge in the quartz tube to generate various oxidative components and ultraviolet rays. The oxidative components are dispersed in the wastewater in the form of fine bubbles, and ultraviolet rays directly irradiate the wastewater and activate a photocatalyst installed in the wastewater. As described above, the present invention provides a wastewater treatment apparatus which immerses a dielectric barrier discharge tube in wastewater so that organic substances in the wastewater can be quickly removed due to the combined effect of oxidative components and ultraviolet rays generated in the dielectric barrier discharge tube.
본 발명의 장치에 있어서, 교류 고전압은 금속봉에 인가되며 폐수는 접지되어 폐수자체가 전극의 역할을 한다. 유전체장벽 방전관내에 공기나 산소를 흘려주며 전기방전을 일으키면 자외선과 오존, 산소라디칼, 수산화라디칼 등 각종 산화성 성분들이 발생된다. 이러한 산화성 성분들을 폐수 내에 미세한 기포형태로 분산시키면 폐수내의 유기물들이 산화되며 제거된다. 또한, 폐수 내에 광촉매가 설치되면 유전체장벽 방전관에서 방출되는 자외선이 폐수처리에 보다 효과적으로 이용될 수 있다.In the apparatus of the present invention, an alternating high voltage is applied to the metal rod and the wastewater is grounded so that the wastewater itself serves as an electrode. Air or oxygen flows into the dielectric barrier discharge tube and electric discharge generates various oxidative components such as ultraviolet rays, ozone, oxygen radicals and hydroxyl radicals. Dispersing these oxidative components in the form of fine bubbles in the wastewater oxidizes and removes organic matter in the wastewater. In addition, when the photocatalyst is installed in the wastewater, ultraviolet rays emitted from the dielectric barrier discharge tube can be more effectively used for wastewater treatment.
유전체장벽 방전은 여러 종류의 산화성 성분들의 발생에 이용될 수 있을 뿐 아니라 275-400 ㎚ 범위의 다양한 파장을 가진 자외선의 발생에 이용될 수 있다. 따라서, 유전체장벽 방전을 통해 발생되는 산화성 성분들과 자외선을 폐수처리에 효과적으로 이용할 수 있도록 장치가 설계된다면, 하나의 장치로 두 가지 이상의 효과, 즉 산화성 성분들에 의한 산화효과, 자외선처리효과, 광촉매 활성화에 의한 효과 등 복합적인 효과가 얻어지므로 폐수내의 유기물 처리 성능이 크게 증가하며 전력소모도 감소될 수 있다.Dielectric barrier discharges can be used to generate various types of oxidative components as well as to generate ultraviolet light having various wavelengths in the 275-400 nm range. Therefore, if the device is designed to effectively use the oxidative components and ultraviolet rays generated through the dielectric barrier discharge in the wastewater treatment, two or more effects in one device, that is, the oxidation effect by the oxidizing components, the ultraviolet treatment effect, the photocatalyst Complex effects, such as those by activation, are obtained, which greatly increases the performance of organic matter treatment in wastewater and can reduce power consumption.
또한, 본 발명은 상기 폐수처리 장치를 이용한 폐수처리 방법을 제공한다.In addition, the present invention provides a wastewater treatment method using the wastewater treatment apparatus.
본 발명의 폐수처리 방법에 있어서, 처리할 폐수에 과산화수소를 첨가하여 유전체장벽 방전관에서 방출되는 자외선이 폐수처리에 효과적으로 이용되도록 하는 것이 바람직하며, 상기 과산화수소는 하기의 반응식(10)에 의한 자체 분해 반응에 의해 수산화라디칼을 생성하는 것이 보다 바람직하다.In the wastewater treatment method of the present invention, it is preferable to add hydrogen peroxide to the wastewater to be treated so that ultraviolet light emitted from the dielectric barrier discharge tube can be effectively used for wastewater treatment, and the hydrogen peroxide is self-decomposed according to the following reaction formula (10). It is more preferable to generate radicals by the.
H2O2 + hv → OH· + OH· (반응식 10)H 2 O 2 + hv → OH + OH (Scheme 10)
또한, 본 발명의 폐수처리 방법에 있어서, 석영관에 공기를 흘리며 금속봉에 고전압을 인가하면 석영관 내부에서 공기 중의 산소와 수증기가 해리되어 오존, 산소원자 및 수산화라디칼을 포함한 각종 산화성 성분들이 발생되고, 상기 기체 방전에 의해 발생되는 고에너지 전자(e-)에 의한 산화성 성분들의 생성 반응식은 하기 반응식 1 내지 반응식 5에 의한 것이 바람직하며, 상기 O, O3, OH·의 산화성 성분들을 함유한 기체는 폐수처리반응기 밑면에 설치된 기체 확산기를 통해 미세한 기포 형태로 폐수에 분산되며, 폐수내의 유기물은 이들 성분들과의 반응을 통해 산화되어 제거되는 것이 바람직하다.In addition, in the wastewater treatment method of the present invention, when high voltage is applied to the metal rod while flowing air to the quartz tube, oxygen and water vapor in the quartz are dissociated to generate various oxidative components including ozone, oxygen atoms, and radicals. The formation of oxidative components by the high energy electrons (e − ) generated by the gas discharge is preferably according to the following Schemes 1 to 5, and the gas containing the oxidizing components of O, O 3 and OH. Is dispersed in the wastewater in the form of fine bubbles through a gas diffuser installed on the bottom of the wastewater treatment reactor, the organic matter in the wastewater is preferably oxidized and removed through reaction with these components.
O2 + e- → O + O + e- (반응식 1) O 2 + e - → O + O + e - ( scheme 1)
O + O2 → O3 (반응식 2)O + O 2 → O 3 (Scheme 2)
H2O + e- → OH·+ H·+ e- (반응식 3) H 2 O + e - → OH · + H · + e - ( scheme 3)
O3 → O + O2 (반응식 4)O 3 → O + O 2 (Scheme 4)
O + H2O → 2OH· (반응식 5)O + H 2 O → 2OH (Scheme 5)
또한, 본 발명의 폐수처리 방법에 있어서, 석영관에서 방출되는 자외선(hv)은 하기 반응식6 내지 반응식 9에 의하여 전자(e-)-정공(h+)쌍을 형성하며 광촉매를 활성화시켜 폐수내에 수산화라디칼(OH·)을 발생시키는 것이 바람직하고, 상기 자외선의 파장은 275-400 ㎚인 것이 보다 바람직하다. 하기 반응식에서 h+는 정공(hole)을 의미한다.Further, in the wastewater treatment method of the present invention, ultraviolet rays (hv) emitted from the quartz tube is according to the following Scheme 6 to scheme 9 electron (e -) - in the form of a hole (h +) pairs and activates the photocatalyst wastewater It is preferable to generate | occur | produce a radical (OH *), and it is more preferable that the wavelength of the said ultraviolet-ray is 275-400 nm. In the following scheme, h + means a hole.
TiO2 + hv → e- + h+ (반응식 6) TiO 2 + hv → e - + h + ( Scheme 6)
h+ + H2O → H+ + OH· (반응식 7)h + + H 2 O → H + + OH (Scheme 7)
e- + H2O2 → OH· + OH- (반응식 8) e - + H 2 O 2 → OH · + OH - (reaction scheme 8)
h+ + H2O2 → H+ + HO2 (반응식 9)
h + + H 2 O 2 → H + + HO 2 (Scheme 9)
본 발명은 유기성 오염물이 함유된 폐수 처리 방법에 관한 것이다. 본 발명은 석영관과 금속봉으로 이루어진 유전체장벽 방전관을 접지되어 있는 폐수에 담가 놓고, 고전압을 금속봉에 인가하여 석영관 내에서 강한 전기 방전을 일으켜 각종 산화성 성분들과 자외선을 발생시킨다. 산화성 성분들은 미세한 기포형태로 폐수 내에 분산되며, 자외선은 폐수를 직접 조사시키기도 하고 폐수 내에 설치된 광촉매를 활성화시키기도 한다. 이와 같이, 본 발명은 유전체장벽 방전관을 폐수에 담가 유전체장벽 방전관에서 발생되는 산화성 성분들과 자외선의 복합적인 효과로 인해 폐수 중의 유기물이 빠르게 제거되도록 하는 것을 특징으로 하는 폐수 처리 방법을 제공한다. 본 발명의 방법은 폐수의 유기물을 99% 이상 제거시킬 수 있고, 장치가 매우 간단하며 전력소모가 작으므로 각종 폐수 처리에 쉽게 적용 가능한 장점이 있다.The present invention relates to a wastewater treatment method containing organic contaminants. In the present invention, a dielectric barrier discharge tube consisting of a quartz tube and a metal rod is immersed in the grounded wastewater, and a high voltage is applied to the metal rod to generate a strong electric discharge in the quartz tube to generate various oxidative components and ultraviolet rays. The oxidative components are dispersed in the wastewater in the form of fine bubbles, and ultraviolet rays directly irradiate the wastewater and activate a photocatalyst installed in the wastewater. As described above, the present invention provides a wastewater treatment method by immersing a dielectric barrier discharge tube in wastewater so that organic matter in the wastewater can be quickly removed due to the combined effect of oxidative components and ultraviolet rays generated in the dielectric barrier discharge tube. The method of the present invention can remove more than 99% of the organic matter in the wastewater, the device is very simple and the power consumption is small, there is an advantage that can be easily applied to various wastewater treatment.
본 발명의 일실시예에 의한 폐수처리 장치의 구성은 대략적으로 도 1과 같다. 즉, 본 발명의 폐수처리 장치는 고전압 발생기(AC), 알루미늄 망에 이산화티타늄이 코팅된 광촉매, 폐수 내에 담겨진 유전체장벽 방전관, 기체 확산기로 구성된다. 폐수는 접지되어 있으며 폐수 자체가 한 전극의 역할을 한다. 유전체장벽 방전관은 석영관으로 이루어지며, 석영관의 중심에는 구리봉이 놓인다. 광촉매 망은 원통형으로 말아 폐수처리 반응기내에 설치된다.The configuration of the wastewater treatment apparatus according to an embodiment of the present invention is approximately the same as that of FIG. 1. That is, the wastewater treatment apparatus of the present invention comprises a high voltage generator (AC), a photocatalyst coated with titanium dioxide on an aluminum network, a dielectric barrier discharge tube contained in the wastewater, and a gas diffuser. The wastewater is grounded and the wastewater itself serves as an electrode. The dielectric barrier discharge tube consists of a quartz tube, and a copper rod is placed at the center of the quartz tube. The photocatalyst network is rolled into a cylinder and installed in the wastewater treatment reactor.
이러한 폐수처리 장치를 작동하기 위해서는, 석영관에 공기를 흘리며 구리봉에 고전압을 인가하면 석영관 내부에서 공기 중의 산소와 수증기가 해리되어 오존, 산소원자, 수산화라디칼 등의 각종 산화성 성분들이 기체 방전에 의해 발생되는 고에너지 전자(e-)에 의해 생성된다. 이들 O, O3, OH· 등의 산화성 성분들을 함유한 기체는 폐수처리반응기 밑면에 설치된 기체 확산기를 통해 미세한 기포 형태로 폐수에 분산되며, 폐수내의 유기물은 이들 성분들과의 반응을 통해 산화되어 제거된다(반응식 1 내지 반응식 5 참조).In order to operate such a wastewater treatment device, when air is flowed through the quartz tube and a high voltage is applied to the copper rod, oxygen and water vapor in the air dissociate inside the quartz tube, and various oxidative components such as ozone, oxygen atoms, and radicals of radicals are discharged by gas discharge. It is generated by the generated high energy electrons (e − ). Gases containing oxidative components such as O, O 3 and OH · are dispersed in the wastewater in the form of fine bubbles through a gas diffuser installed at the bottom of the wastewater treatment reactor, and organic matter in the wastewater is oxidized through reaction with these components. Removed (see Scheme 1 to Scheme 5).
한편, 석영관에서 방출되는 자외선은 전자(e-)-정공(h+)쌍을 형성하며 광촉매를 활성화시켜 수산화라디칼(OH·)을 생성시킨다. 과산화수소를 폐수에 첨가하면 수산화라디칼의 발생량이 더욱 증가하는데, 자외선(hv)에 의해 폐수 내에 수산화라디칼이 발생된다(반응식 6 내지 반응식 9 참조).Meanwhile, the ultraviolet rays emitted from the quartz tube form electron (e − ) -hole (h + ) pairs, and activate photocatalysts to generate radical hydroxide (OH ·). When hydrogen peroxide is added to the wastewater, the generation amount of radicals of the radicals is further increased, and radicals are generated in the wastewater by ultraviolet rays ( hv ) (see schemes 6 to 9).
그밖에 자외선에 의한 과산화수소의 자체 분해 반응에 의해서도 수산화라디칼이 생성될 수 있다(반응식 10 참조)In addition, radical hydroxides can be produced by the self-decomposition of hydrogen peroxide by ultraviolet light (see Scheme 10).
이와 같이 생성된 수산화 라디칼은 유기물을 산화시켜 제거한다.The hydroxyl radicals thus generated are oxidized and removed by organic matter.
본 발명자들은 상기 제조한 폐수처리 장치에 의한 모사 폐수처리를 실험하였다. 모사 폐수의 제조를 위해 증류수에 유기물을 녹여 사용하고, 사용된 유기물은 Acid Red 4, Acid Red 27, Reactive Blue 4 세 가지이다.The present inventors tested the simulated wastewater treatment by the wastewater treatment apparatus prepared above. Organic materials are dissolved in distilled water for the production of simulated wastewater. The organic materials used are acid red 4, acid red 27 and reactive blue 4.
Acid Red 4에 대한 4가지 다른 조건하에서 실험하고(표 1 참조), 각각의 조건에 대한 Acid Red 4의 처리시간에 따른 제거효율을 확인한 결과, 유전체장벽 방전관 출구의 기체를 폐수에 주입하지 않고 과산화수소도 사용하지 않을 경우(Case I), 제거효율 낮고, Case Ⅱ처럼 과산화수소(H2O2)를 첨가하면 수산화라디칼 발생량이 증가하여 제거효율이 크게 증가한다(도 2 참조). Case I과 Case Ⅱ의 결과는 유전체장벽 방전관에서 방출되는 자외선이 유기물 제거에 이용될 수 있음을 나타낸다. 또한, 광촉매를 사용하지 않고 과산화수소도 첨가하지 않았을 때는(Case Ⅲ), 유전체장벽 방전관 출구에서 배출되는 산화성 성분들에 의해서만 유기물이 제거되지만 매우 높지만, 광촉매, 과산화수소, 유전체장벽 방전관 출구 기체를 모두 다 사용한 경우에는(Case Ⅳ), 매우 빠른 시간내에 유기물들이 제거된다(도 2 참조). 이와 같이, 본 발명에서는 유전체장벽 방전관에서 발생되는 산화성 성분들과 자외선이 폐수처리에 효과적으로 이용될 수 있도록 고안하여, 간단한 장치로 짧은 시간 내에 폐수 중의 유기물들을 효과적으로 처리할 수 있다.Experiments were carried out under four different conditions for Acid Red 4 (see Table 1), and the removal efficiency of Acid Red 4 for each condition was verified. As a result, hydrogen peroxide was not injected into the wastewater without injecting the gas at the outlet of the dielectric barrier discharge tube. When not used (Case I), the removal efficiency is low, and the addition of hydrogen peroxide (H 2 O 2 ) as in Case II radically increased the amount of radicals generated (see Figure 2). The results of Case I and Case II indicate that the ultraviolet rays emitted from the dielectric barrier discharge tube can be used to remove organic matter. In addition, when no photocatalyst is used and no hydrogen peroxide is added (Case III), the organic matter is removed only by the oxidizing components discharged from the dielectric barrier discharge tube outlet, but the photocatalyst, hydrogen peroxide, and the dielectric barrier discharge gas are all used. In case (Case IV), organics are removed in a very short time (see FIG. 2). As such, in the present invention, the oxidative components and ultraviolet rays generated in the dielectric barrier discharge tube are designed to be effectively used for wastewater treatment, and the organic matter in the wastewater can be effectively treated in a short time with a simple device.
아울러, 다른 유기물에 대해서도 본 발명의 장치와 사용방법이 효과적인지 확인하기 위하여 Acid Red 27의 처리 실험을 동일하게 수행하였다. 그 결과, 유전체장벽 방전관을 이용하는 본 발명의 방법이 다른 유기물인 Acid Red 27에 대해서도 효과적임을 알 수 있다(도 3 참조).In addition, the same experiments were performed for acid red 27 to determine whether the apparatus and method of the present invention are effective for other organic materials. As a result, it can be seen that the method of the present invention using the dielectric barrier discharge tube is also effective against Acid Red 27, which is another organic substance (see FIG. 3).
하기 표 1의 Case Ⅳ 조건에서 전압을 변화시키며 Reactive Blue 4 제거 정도를 측정하였다. 그 결과, Reactive Blue 4도 본 발명의 장치 및 방법에 의해 거의 완전히 제거될 수 있다(도 4 참조). 전압을 증가시킴에 따라 유기물 농도가 더 빨리 저감되는 이유는, 전압이 증가할 때 유전체장벽 방전관에서 방출되는 자외선의 강도가 더 세지고(도 5 참조), 유전체장벽 방전관에서 발생되는 산화성 성분들 의 양이 증가하기 때문이다.The degree of removal of Reactive Blue 4 was measured by varying the voltage in Case IV conditions of Table 1 below. As a result, Reactive Blue 4 can also be almost completely removed by the apparatus and method of the present invention (see FIG. 4). The reason that organic matter concentration decreases faster with increasing voltage is that the intensity of ultraviolet light emitted from the dielectric barrier discharge tube becomes stronger as the voltage increases (see FIG. 5), and the amount of oxidative components generated in the dielectric barrier discharge tube is increased. Because it increases.
이하, 본 발명을 실시예에 의해 상세히 설명한다. 본 발명의 실시예에 따른 유기물을 함유하고 있는 폐수처리 방법을 첨부된 도면을 참조하여 상세히 설명하기로 한다.Hereinafter, the present invention will be described in detail by way of examples. With reference to the accompanying drawings, a wastewater treatment method containing an organic substance according to an embodiment of the present invention will be described in detail.
단, 하기 실시예는 본 발명을 예시하는 것일 뿐 본 발명의 내용이 하기 실시예에 한정되는 것은 아니다.However, the following examples are merely to illustrate the present invention is not limited to the contents of the present invention.
<실시예 1> 폐수처리 장치의 구성Example 1 Configuration of Wastewater Treatment System
본 발명의 실험장치 구성을 개략적으로 나타내면 도 1과 같다. 보다 구체적으로, 본 발명은 고전압 발생기(AC), 알루미늄 망에 이산화티타늄이 코팅된 광촉매, 폐수 내에 담겨진 유전체장벽 방전관, 기체 확산기로 구성되어 있다. 폐수는 접지되어 있으며 폐수 자체가 한 전극의 역할을 한다. 유전체장벽 방전관은 외경 25 ㎜, 내경 22 ㎜인 석영관으로 이루어졌으며, 석영관의 중심에는 9 ㎜ 구리봉이 놓여져 있다. 광촉매 망(36 meshes, 크기 80 ㎜ × 150 ㎜)은 원통형으로 말아 폐수처리 반응기내에 설치하였다.1 shows a schematic configuration of an experimental apparatus of the present invention. More specifically, the present invention comprises a high voltage generator (AC), a photocatalyst coated with titanium dioxide on an aluminum network, a dielectric barrier discharge tube contained in wastewater, and a gas diffuser. The wastewater is grounded and the wastewater itself serves as an electrode. The dielectric barrier discharge tube was made of a quartz tube having an outer diameter of 25 mm and an inner diameter of 22 mm, and a 9 mm copper rod was placed at the center of the quartz tube. Photocatalyst networks (36 meshes,
<실시예 2> 폐수처리 장치의 작동기작Example 2 Operation Mechanism of Wastewater Treatment System
상기 실시예 1의 폐수처리 장치의 석영관에 공기를 흘리며 구리봉에 고전압을 인가하면 석영관 내부에서 공기 중의 산소와 수증기가 해리되어 오존, 산소원자, 수산화라디칼 등의 각종 산화성 성분들이 발생되는데, 기체 방전에 의해 발생되는 고에너지 전자(e-)에 의한 산화성 성분들의 생성 반응식은 다음과 같다:When high voltage is applied to the copper rod while flowing air to the quartz tube of the wastewater treatment apparatus of Example 1, oxygen and water vapor in the air dissociate inside the quartz tube to generate various oxidative components such as ozone, oxygen atom, and radical hydroxide. The reaction scheme for the generation of oxidative components by high energy electrons (e − ) generated by discharge is as follows:
O2 + e- → O + O + e- (반응식 1) O 2 + e - → O + O + e - ( scheme 1)
O + O2 → O3 (반응식 2)O + O 2 → O 3 (Scheme 2)
H2O + e- → OH·+ H·+ e- (반응식 3) H 2 O + e - → OH · + H · + e - ( scheme 3)
O3 → O + O2 (반응식 4)O 3 → O + O 2 (Scheme 4)
O + H2O → 2OH· (반응식 5)O + H 2 O → 2OH (Scheme 5)
이들 O, O3, OH· 등의 산화성 성분들을 함유한 기체는 폐수처리반응기 밑면에 설치된 기체 확산기를 통해 미세한 기포 형태로 폐수에 분산되며, 폐수내의 유기물은 이들 성분들과의 반응을 통해 산화되어 제거된다.Gases containing oxidative components such as O, O 3 and OH · are dispersed in the wastewater in the form of fine bubbles through a gas diffuser installed at the bottom of the wastewater treatment reactor, and organic matter in the wastewater is oxidized through reaction with these components. Removed.
한편, 석영관에서 방출되는 자외선은 전자(e-)-정공(h+)쌍을 형성하며 광촉매를 활성화시켜 수산화라디칼(OH·)을 생성시킨다. 과산화수소를 폐수에 첨가하면 수산화라디칼의 발생량이 더욱 증가하는데, 자외선(hv)에 의해 폐수 내에 수산화라디칼이 발생되는 반응은 다음과 같다:Meanwhile, the ultraviolet rays emitted from the quartz tube form electron (e − ) -hole (h + ) pairs, and activate photocatalysts to generate radical hydroxide (OH ·). The addition of hydrogen peroxide to the wastewater further increases the amount of radicals produced. The reaction of generating radicals in the wastewater by ultraviolet light ( hv ) is as follows:
TiO2 + hv → e- + h+ (반응식 6) TiO 2 + hv → e - + h + ( Scheme 6)
h+ + H2O → H+ + OH· (반응식 7)h + + H 2 O → H + + OH (Scheme 7)
e- + H2O2 → OH· + OH- (반응식 8) e - + H 2 O 2 → OH · + OH - (reaction scheme 8)
h+ + H2O2 → H+ + HO2 (반응식 9)h + + H 2 O 2 → H + + HO 2 (Scheme 9)
그밖에 자외선에 의한 과산화수소의 자체 분해 반응에 의해서도 수산화라디칼이 생성될 수 있다:Radical hydroxide can also be produced by the self-decomposition of hydrogen peroxide by ultraviolet light:
H2O2 + hv → OH· + OH· (반응식 10)H 2 O 2 + hv → OH + OH (Scheme 10)
반응식 6 내지 반응식 10에 의해 생성된 수산화 라디칼은 유기물을 산화시켜 제거한다.The hydroxyl radicals generated by Schemes 6 through 10 oxidize and remove the organics.
<실험예 1> 폐수처리 장치에 의한 폐수처리Experimental Example 1 Wastewater Treatment by Wastewater Treatment System
본 발명의 실시예 1에서 제조된 폐수처리 장치를 이용한 폐수처리 실험을 수행하였다.Wastewater treatment experiment using the wastewater treatment apparatus prepared in Example 1 of the present invention was carried out.
구체적으로, 모사 폐수의 제조를 위해 증류수에 유기물을 녹여 사용하였다. 사용된 유기물은 Acid Red 4, Acid Red 27, Reactive Blue 4 세 가지였다. 모사 폐수의 부피는 500 ㎖였고, 유기물의 농도는 20-50 ppm 범위였다. 유전체장벽 방전관에 공급된 공기의 유량은 8 ℓ/min였다.Specifically, organic materials were dissolved and used in distilled water to prepare simulated wastewater. Organic materials used were Acid Red 4, Acid Red 27, and Reactive Blue 4. The volume of the simulated wastewater was 500 ml and the concentration of organics ranged from 20-50 ppm. The flow rate of the air supplied to the dielectric barrier discharge tube was 8 L / min.
<1-1> Acid Red 4의 처리<1-1> Treatment of Acid Red 4
하기 표 1에 Acid Red 4에 대한 4가지 다른 조건하의 실험예를 기재하였고, 각각의 조건에 대한 Acid Red 4의 처리시간에 따른 제거효율을 확인하였다(도 2). Acid Red 4의 초기 농도는 20 ppm이었고, 공급된 전압은 29.4 ㎸ 그리고 투입된 전력은 13.4 W였다. Acid Red 4의 구조식은 다음과 같다.Table 1 describes the experimental examples under four different conditions for Acid Red 4, and confirmed the removal efficiency according to the treatment time of Acid Red 4 for each condition (FIG. 2). The initial concentration of Acid Red 4 was 20 ppm, the voltage supplied was 29.4 mA and the power input was 13.4 W. The structural formula of Acid Red 4 is as follows.
그 결과, 도 2에 기재한 바와 같이, 유전체장벽 방전관 출구의 기체를 폐수에 주입하지 않고 과산화수소도 사용하지 않을 경우(Case I), 30분 처리시 약 14%의 제거효율이 얻어졌다. Case Ⅱ처럼 과산화수소(H2O2)를 18.7 mM 첨가했을 때는 상기한 반응식 8 및 반응식 10과 같이 수산화라디칼 발생량이 증가하여 30분 처리시의 제거효율이 65%로 증가하였다. Case I과 Case Ⅱ의 결과는 유전체장벽 방전관에서 방출되는 자외선이 유기물 제거에 이용될 수 있음을 나타낸다. 광촉매를 사용하지 않고 과산화수소도 첨가하지 않았을 때는(Case Ⅲ), 유전체장벽 방전관 출구에서 배출되는 산화성 성분들에 의해서만 유기물이 제거되며 이때의 제거효율은 30분 처리시 약 93%였다. 그러나, 광촉매, 과산화수소, 유전체장벽 방전관 출구 기체를 모두 다 사용한 경우에는(Case Ⅳ), 15분 처리 후에도 90% 가까이 유기물들이 제거되었으며 25분 후에는 거의 100% 제거되었다. 이와 같이 본 발명에서는 유전체장벽 방전관에서 발생되는 산화성 성분들과 자외선이 폐수처리에 효과적으로 이용될 수 있도록 고안하여, 간단한 장치로 짧은 시간 내에 폐수 중의 유기물들을 효과적으로 처리할 수 있었다.As a result, as shown in Fig. 2, when no gas from the outlet of the dielectric barrier discharge tube was injected into the waste water and hydrogen peroxide was not used (Case I), a removal efficiency of about 14% was obtained in 30 minutes of treatment. When 18.7 mM of hydrogen peroxide (H 2 O 2 ) was added as in Case II, the amount of radical radicals increased as shown in
<1-2> Acid Red 27의 처리<1-2> Treatment of Acid Red 27
다른 유기물에 대해서도 본 발명의 장치와 사용방법이 효과적인지 확인하기 위하여 Acid Red 27(초기농도 50 ppm)의 처리 실험을 상기 실험예와 동일하게 수행하였다. Acid Red 27의 분자 구조식은 다음과 같다.In order to confirm that the apparatus and the method of use of the present invention are effective for other organic materials, the treatment experiment of Acid Red 27 (initial concentration of 50 ppm) was performed in the same manner as in the experimental example. The molecular structure of Acid Red 27 is as follows.
그 결과, 도 3에 기재한 바와 같이 유전체장벽 방전관을 이용하는 본 발명의 방법이 다른 유기물인 Acid Red 27에 대해서도 효과적임을 알 수 있었다.As a result, it was found that the method of the present invention using the dielectric barrier discharge tube, as shown in Fig. 3, was also effective against Acid Red 27, which is another organic substance.
<1-3> Reactive Blue 4의 처리<1-3> Treatment of Reactive Blue 4
상기 표 1의 Case Ⅳ 조건에서 전압을 변화시키며 Reactive Blue 4 제거 정도를 측정하였다. 그 결과, 도 4에 기재된 바와 같은 결과를 확인하였다. 도 4의 세로축에서 C/C0는 처리 전 농도(C0)에 대한 처리 후 농도(C)의 비율이다. Reactive Blue 4의 분자 구조식은 다음과 같다.The degree of removal of Reactive Blue 4 was measured while varying the voltage under Case IV conditions of Table 1. As a result, the result as described in FIG. 4 was confirmed. In the vertical axis of FIG. 4, C / C0 is the ratio of the concentration C after the treatment to the concentration C0 before the treatment. The molecular structure of Reactive Blue 4 is as follows.
도 4에 기재된 바와 같이 Reactive Blue 4도 본 발명의 장치 및 방법에 의해 거의 완전히 제거될 수 있었다. 도 4에서 전압을 증가시킴에 따라 유기물 농도가 더 빨리 저감되는 이유는, 전압이 증가할 때 유전체장벽 방전관에서 방출되는 자외선의 강도가 더 세지고(도 5), 유전체장벽 방전관에서 발생되는 산화성 성분들의 양이 증가하기 때문이다.As described in FIG. 4, Reactive Blue 4 could also be almost completely removed by the apparatus and method of the present invention. The reason why the organic matter concentration decreases faster as the voltage is increased in FIG. 4 is that the intensity of ultraviolet rays emitted from the dielectric barrier discharge tube is increased when the voltage is increased (FIG. 5), and the oxidative components generated in the dielectric barrier discharge tube are increased. Because the amount increases.
이와 같이, 본 발명은 폐수에 담겨진 유전체장벽 방전관 내부에서 전기적인 방전을 일으켜 각종 산화성 성분들과 자외선을 발생시키고, 이들 산화성 성분들을 미세한 기포형태로 폐수 내에 분산시켜 폐수내의 유기물이 산화되어 제거되도록 하고, 동시에 유전체장벽 방전관에서 방출되는 자외선을 이용하여 광촉매를 활성화시키거나 폐수를 직접 조사하여 유기물이 제거되도록 하였다. 따라서, 본 발명은 두 가지 이상의 메커니즘에 의해 유기물을 처리할 수 있는 처리장치와 방법을 제공함으로써, 궁극적으로 간단한 반응장치에서 적은 전력으로 유기물이 고효율로 제거되도록 하였다.As such, the present invention generates electrical discharge in the dielectric barrier discharge tube contained in the wastewater to generate various oxidative components and ultraviolet rays, and disperse these oxidative components in the form of fine bubbles in the wastewater to oxidize and remove the organic matter in the wastewater. At the same time, the photocatalyst was activated using ultraviolet rays emitted from the dielectric barrier discharge tube, or the organic matter was removed by directly irradiating the wastewater. Accordingly, the present invention provides a treatment apparatus and method capable of treating organic matter by two or more mechanisms, thereby ultimately allowing organic matter to be removed with high power in a simple reactor.
상기에서 살펴본 바와 같이, 본 발명은 폐수에 담겨진 유전체장벽 방전관 내부에서 전기적인 방전을 일으켜 각종 산화성 성분들과 자외선을 발생시키고, 이들 산화성 성분들을 미세한 기포형태로 폐수 내에 분산시켜 폐수내의 유기물이 산화되어 제거되도록 하고, 동시에 유전체장벽 방전관에서 방출되는 자외선을 이용하여 광촉매를 활성화시키거나 폐수를 직접 조사하여 유기물이 제거되도록 함으로써 본 발명은 두 가지 이상의 메커니즘에 의해 유기물을 처리할 수 있는 처리장치와 방법을 제공하여 궁극적으로 간단한 반응장치에서 적은 전력으로 유기물이 고효율로 제거되도록 하였다. 이에, 본 발명의 첫째, 하나의 장치에서 여러 가지 효과가 동시에 제공되어 폐수처리 성능이 크게 증가되고, 둘째, 전극이 폐수에 직접 접촉하지 않으므로 전극의 부식이나 전극의 용출 문제가 없으며, 셋째 발명의 구성 및 조작이 단순하여 설치 및 운전이 용이하다는 것이다.As described above, the present invention generates an electrical discharge inside the dielectric barrier discharge tube contained in the wastewater to generate various oxidative components and ultraviolet rays, and by dispersing these oxidative components in the form of fine bubbles in the wastewater to oxidize organic matter in the wastewater. The present invention provides a treatment apparatus and a method capable of treating organic matter by two or more mechanisms by activating a photocatalyst by using ultraviolet rays emitted from a dielectric barrier discharge tube or by directly irradiating wastewater. To ultimately remove organic materials with high power and low power in a simple reactor. Thus, the first, the various effects are provided simultaneously in one device, the wastewater treatment performance is greatly increased, and secondly, there is no problem of electrode corrosion or elution of the electrode because the electrode does not directly contact the wastewater, Simple configuration and operation make installation and operation easy.
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