KR20030008073A - Multi-tubular photo-oxidatic reactor - Google Patents
Multi-tubular photo-oxidatic reactor Download PDFInfo
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- KR20030008073A KR20030008073A KR1020010042828A KR20010042828A KR20030008073A KR 20030008073 A KR20030008073 A KR 20030008073A KR 1020010042828 A KR1020010042828 A KR 1020010042828A KR 20010042828 A KR20010042828 A KR 20010042828A KR 20030008073 A KR20030008073 A KR 20030008073A
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- South Korea
- Prior art keywords
- photo
- photoreactor
- photoreaction layer
- stage
- light irradiation
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- 239000002351 wastewater Substances 0.000 claims abstract description 37
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims abstract description 10
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 10
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 5
- 238000006552 photochemical reaction Methods 0.000 claims 1
- 238000007539 photo-oxidation reaction Methods 0.000 abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 9
- 239000010802 sludge Substances 0.000 abstract description 6
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- 238000006386 neutralization reaction Methods 0.000 abstract description 5
- 239000007800 oxidant agent Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 10
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 9
- 238000000354 decomposition reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 150000002505 iron Chemical class 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 208000035404 Autolysis Diseases 0.000 description 1
- 206010057248 Cell death Diseases 0.000 description 1
- 229910019093 NaOCl Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- WKPSFPXMYGFAQW-UHFFFAOYSA-N iron;hydrate Chemical compound O.[Fe] WKPSFPXMYGFAQW-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000028043 self proteolysis Effects 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- 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
-
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
Abstract
Description
본 발명은 다단형 광산화반응장치에 관한 것으로, 내부에 자외선 램프를 구비하는 실린더형상 반응기 다수개를 상/하/좌/우로 병렬/연결하여 강력한 산화제인 OH-Radical의 형성에 의해 오염물질을 슬러지 발생없이 처리할 수 있는 다단형 광산화반응장치에 관한 것이다.The present invention relates to a multi-stage photo-oxidation reactor, sludge pollutants by the formation of a powerful oxidizer OH-Radical by connecting a plurality of cylinder-like reactors with ultraviolet lamps in up / down / left / right in parallel. It relates to a multi-stage photoacidification device that can be processed without generation.
일반적으로 광산화반응장치는 소정의 파장을 가지는 자외선을 이용하여 폐수중에 포함되어 있는 난분해성물질 및 소량의 유기물이 산화되도록 한 것으로, 소정의 파장을 구비한 자외선을 조사시키는 자외선 램프와, 상기 자외선 램프를 수용하고 폐수의 인입구 및 인출구가 구비된 광반응기로 구성되어 있다.In general, the photo-oxidation reaction apparatus is to oxidize the hardly decomposable substance and a small amount of organic substances contained in the waste water by using ultraviolet rays having a predetermined wavelength, an ultraviolet lamp for irradiating ultraviolet rays having a predetermined wavelength, and the ultraviolet lamp It consists of a photoreactor equipped with an inlet and outlet for wastewater.
즉, 상기 광산화 반응장치는 광반응기내로 폐수를 흐르게 하고, 상기 흐르는 폐수에 소정의 파장을 구비한 자외선을 조사시켜 광산화반응이 진행되도록 되어 있으나, 종래의 광산화반응장치는 내부에 자외선 램프가 내장되고, 폐수를 플로우(flow)시킬 수 있도록 라인형상을 구비하고 있어, 폐수의 반응기내 체류시간이 짧고, 그로 인해 난분해성물질 및 유기물이 효율적으로 제거되지 못하는 등 여러 가지 문제점이 있었다.That is, the photo-oxidation reaction device is a waste water flows into the photoreactor, and the photo-oxidation reaction proceeds by irradiating the ultraviolet light having a predetermined wavelength to the flowing waste water, the conventional photo-oxidation reaction apparatus has a built-in ultraviolet lamp In addition, since the wastewater has a line shape to flow, the residence time of the wastewater in the reactor is short, and there are various problems such as difficult to remove the hardly decomposable substances and organic matter.
본 발명은 상기와 같은 문제점을 고려하여 이루어진 것으로, 그 목적은 방해판을 구비하는 다수개의 광반응기를 번들형태로 연결하여, 폐수의 체류시간을 길게 하고, 난분해성 물질 및 유기물을 효과적으로 분해하며, 자외선 램프의 수명을 연장할 수 있는 다단형 광산화반응장치를 제공하는 것이다.The present invention has been made in view of the above problems, and its object is to connect a plurality of photoreactors having a baffle in a bundle form to increase the residence time of the wastewater, and to effectively decompose hardly decomposable substances and organic substances, It is to provide a multi-stage photoacidification device that can extend the life of the ultraviolet lamp.
본 발명은 다수개의 광반응기를 수평연결관에 의해 수평 연결하여 광반응층을 형성하고, 상기 다수개의 광반응층을 수직연결관에 의해 수직연결하여 다단으로 형성하며, 상기 다단으로 설치된 광반응층의 일측에 과산화수소 투입구를 설치함과 동시에, 상기 다단으로 설치된 광반응층의 최상단 광반응층에 폐수유입구와 염화제이철 투입구를 형성/설치하고, 상기 다단으로 설치된 광반응층의 최하단 광반응층의 일측단 광반응기에 폐수배출구를 설치한 다단형 광산화반응장치를 제공함에 있다.The present invention forms a photoreaction layer by horizontally connecting a plurality of photoreactor by a horizontal connector, the plurality of photoreaction layer is formed in a multi-stage by vertically connected by a vertical connector, the photoreaction layer installed in the multi-stage A hydrogen peroxide inlet is provided at one side of the wastewater, a wastewater inlet and a ferric chloride inlet are formed / installed at the uppermost photoreaction layer of the multistage photoreaction layer, and one side of the lowermost photoreaction layer of the multistage photoreaction layer is installed. However, the present invention provides a multi-stage photoacidification device in which a wastewater outlet is installed in a photoreactor.
도 1 은 본 발명에 따른 광반응기 정면 예시도1 is a front view of the photoreactor according to the present invention
도 2 는 본 발명에 따른 광반응기 평면 예시도Figure 2 is a schematic view of the photoreactor according to the present invention
도 3 은 본 발명에 따른 광조사부의 상세예시도Figure 3 is a detailed illustration of the light irradiation unit according to the present invention
도 4 는 난분해성물질 및 COD 분해공정 설명도4 is an explanatory diagram of a hardly decomposable substance and a COD decomposition process
도 5 는 N-S 화합물중 주요 COD 기여성분인 하이드록실 아민 100 ppm을 함유한 합성폐수를 광산화 반응기에 의해 처리한 결과를 보인 예시도5 is an exemplary view showing a result of treating synthetic wastewater containing 100 ppm of hydroxyl amine, which is a major COD contributing component, in a N-S compound by a photooxidation reactor.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
(10) : 광반응기 (11) : 외부자켓(10): photoreactor (11): outer jacket
(12) : 광조사부 (13) : 방해판(12): light irradiation unit (13): baffle plate
(20) : 과산화수소 투입구 (30) : 염화제이철 투입구(20): hydrogen peroxide inlet (30): ferric chloride inlet
(40) : 폐수 배출구 (50) : 수평연결관(40): wastewater outlet (50): horizontal connector
(60) : 수직연결관 (70) : 광반응기 고정대(60): vertical connector (70): photoreactor holder
(80) : 폐수 유입구 (100) : 광반응층(80): wastewater inlet (100): photoreaction layer
(121) : 자외선 램프 (122) : 램프 고정판(121): UV lamp 122: lamp fixing plate
(123) : 자외선 램프 보호자켓(123): UV lamp protection jacket
도 1 은 본 발명에 따른 광반응기 정면 예시도를, 도 2 는 본 발명에 따른 광반응기 평면 예시도를, 도 3 은 본 발명에 따른 광조사부의 상세예시도를, 도 4 는 난분해성물질 및 COD 분해공정 설명도를 도시한 것으로, 본 발명은 다수개의 광반응기(10)를 일렬로 병렬 연결하여 광반응층(100)을 형성하고, 상기 광반응층(100)을 다단으로 연결하며, 상기 각각의 광반응층(100)에 하나씩의 과산화수소 투입구(20)를 형성하고, 최상단에 위치한 광반응층의 일측 광반응기(10a)에 폐수 유입구(80)와 염화제이철 투입구(30)를 형성하며, 최하단에 위치한 광반응층의 일측 광반응기(10b)에 폐수 배출구(40)를 형성하도록 되어 있다.1 is a front view of the photoreactor according to the present invention, FIG. 2 is a plan view of the photoreactor according to the present invention, FIG. 3 is a detailed view of the light irradiation unit according to the present invention, FIG. As illustrated in the COD decomposition process, the present invention forms a photoreaction layer 100 by connecting a plurality of photoreactors 10 in a row in parallel, and connects the photoreaction layer 100 in multiple stages. One hydrogen peroxide inlet 20 is formed in each photoreaction layer 100, and a wastewater inlet 80 and a ferric chloride inlet 30 are formed in one side of the photoreactor 10a of the photoreaction layer located at the top. The wastewater outlet 40 is formed at one side of the photoreactor 10b of the photoreaction layer located at the bottom.
상기 광반응기(10)는 내부로 폐수와 염화제이철 및 과산화수소가 유입되는 것으로, 실린더형상을 구비하는 외부자켓(11)과, 상기 외부자켓(11) 중앙에 설치되는 광조사부(12)와, 상기 광조사부(12)를 중심으로 상/하부에 일정간격을 유지하며 외부자켓(11) 내에 설치되는 다수개의 방해판(13)으로 구성되어 있다.The photoreactor 10 is a waste water, ferric chloride and hydrogen peroxide are introduced into the inside, the outer jacket 11 having a cylindrical shape, the light irradiation unit 12 is installed in the center of the outer jacket 11, and It is composed of a plurality of baffle plate 13 which is installed in the outer jacket 11 while maintaining a predetermined interval in the upper / lower center of the light irradiation unit 12.
상기 광조사부(12)는 광반응기(10)내에 설치되는 것으로, 소정의 자외선을 발산하는 자외선 램프(121)와, 자외선 램프(121)를 고정하는 램프 고정판(122) 및 자외선 램프(121)를 보호하는 자외선 램프 보호자켓(123)으로 구성되어 있으며, 상기 자외선 램프 보호자켓(123)은 자외선의 손실이 적은 재질로 형성되어 있다. 또한, 자외선 램프(121)의 발광시, 자외선 램프 표면온도가 수백도 이상이므로, 이에 견딜 수 있는 코크판 또는 폴리카보네이트 판을 사용하였다. 즉, 상기 자외선 램프(121)은 자외선 고정판(122)에 의해 자외선 램프 보호자켓(123)에 고정된다.The light irradiation unit 12 is installed in the photoreactor 10, and the lamp fixing plate 122 and the ultraviolet lamp 121 for fixing the ultraviolet lamp 121, the ultraviolet lamp 121 to emit a predetermined ultraviolet light The UV lamp protection jacket 123 is protected, and the UV lamp protection jacket 123 is formed of a material having little loss of ultraviolet light. In addition, when the ultraviolet lamp 121 emits light, since the surface temperature of the ultraviolet lamp is several hundred degrees or more, a coke plate or a polycarbonate plate that can withstand this is used. That is, the ultraviolet lamp 121 is fixed to the ultraviolet lamp protective jacket 123 by the ultraviolet fixing plate 122.
상기 방해판(13)은 광반응기(10)내를 흐르는 폐수의 흐름을 방해하여 폐수의 반응기내 체류시간을 증가시키고 혼합효율을 향상시키는 것으로, 광조사부(12)를 중심으로 상/하부에 위치하도록 자외선 램프(121)의 길이방향과 직각되는 방향으로 일정간격을 유지하며 인접하는 방해판과 엇갈리도록 지그재그로 설치되어 있다. 즉, 상부에 설치된 방해판 사이사이에 위치하도록 하부에 방해판이 설치되고, 폐수의 흐름이 굴곡을 구비하도록 상부에 다수개의 방해판이 서로 엇갈리도록 설치되며, 하부에 다수개의 방해판이 서로 엇갈리도록 설치되어 있다.The obstruction plate 13 is to increase the residence time of the wastewater in the reactor and improve the mixing efficiency by obstructing the flow of wastewater flowing in the photoreactor 10, located in the upper / lower center of the light irradiation unit 12 In order to maintain a constant interval in the direction perpendicular to the longitudinal direction of the ultraviolet lamp 121, it is installed in a zigzag to stagger the adjacent obstruction plate. That is, a baffle plate is installed at the lower part so as to be located between the baffle plates installed at the upper part, and a plurality of baffle plates are installed at the upper part to cross each other so that the flow of waste water has a curvature. have.
상기 광반응층(100)은 다수개의 광반응기(10)가 일렬로 병렬 배열되어 있으며, 상기 병렬 배열된 광반응기(10)는 인접하는 광반응기와 수평연결관(50)에 의해연결되고, 상기 수평연결관(50)은 광반응기(10) 양단부에 위치하도록 형성되어 있다. 즉, 광반응기(10)를 연결하는 수평연결관(50)은 동일직선상에 위치하지 않으며, 광반응기(10)를 중심으로 서로 반대되는 위치에 연결/설치되어 있어, 다수개의 광반응기(10)는 수평연결관(50)에 의해 'ㄹ'자 형상으로 연결된다.The photoreaction layer 100 has a plurality of photoreactors 10 are arranged in parallel in a row, the parallel photoreactor 10 is connected by an adjacent photoreactor and a horizontal connection tube 50, the The horizontal connector 50 is formed to be located at both ends of the photoreactor 10. That is, the horizontal connecting pipe 50 connecting the photoreactor 10 is not located on the same straight line, and is connected / installed at positions opposite to each other with respect to the photoreactor 10, thereby providing a plurality of photoreactors 10. ) Is connected in a 'ㄹ' shape by a horizontal connector (50).
예를 들면, 3개의 광반응기 제 1, 2, 3 광반응기가 일렬로 병렬 연결되어 있을 경우, 제 1 광반응기와 제 2 광반응기가 수평연결관에 의해 오른쪽 끝단부가 연결/설치되어 있으면, 제 2 광반응기와 제 3 광반응기는 또다른 수평연결관에 의해 왼쪽 끝단부가 연결되도록 되어 있다.For example, when three photoreactors 1, 2, and 3 photoreactors are connected in parallel in a row, if the first photoreactor and the second photoreactor are connected / installed at the right end by a horizontal connector, The second photoreactor and the third photoreactor are connected to the left end by another horizontal connector.
또한, 상기 광반응층(100)은 다단으로 이루어져 있으며, 다단으로 이루어진 광반응(100)층은 수직연결관(60)에 의해 상/하부에 위치하는 광반응층이 연결되고, 상기 수직연결관(60)은 수평연결관(50)와 같이 동일직선상에 위치하지 않도록 형성되어 있다. 즉, 상기 다수개의 광반응층(100) 역시 다수개의 광반응기(10)와 마찬가지로 수직연결관(60)에 의해 'ㄹ' 자 형상으로 연결되어 있다.In addition, the photoreaction layer 100 is composed of a plurality of stages, the photoreaction layer consisting of a multi-stage layer is connected to the photoreaction layer located in the upper / lower portion by the vertical connection tube 60, the vertical connection tube 60 is formed so as not to be in the same straight line as the horizontal connecting pipe (50). That is, the plurality of photoreaction layer 100 is also connected in a 'L' shape by the vertical connector 60, like the plurality of photoreactor 10.
즉, a,b,c 3개의 광반응층이 다단으로 이어져 있을 경우, a 광반응층의 오른쪽 끝부분에 위치하는 광반응기 하부와, b 광반응층의 오른쪽 끝부분에 위치하는 광반응기 상부가 수직연결관에 의해 연결되어 있으며, b 광반응층의 왼쪽 끝부분에 위치하는 광반응기 하부와 c 광반응층의 왼쪽 끝부분에 위치하는 광반응기 상부가 수직연결관에 의해 연결되어 있다. 또한, b 광반응층의 일측 광반응기 상부 및 c 광반응층의 일측 광반응기 상부에는 과산화수소투입구가 각각 형성/설치되어 있으며, c 광반응층의 일측 광반응기 하부에는 폐수 배출구가 형성/설치되어 있다.That is, when a, b, and c three photoreaction layers are connected in multiple stages, the photoreactor at the right end of the photoreaction layer and the photoreactor at the right end of the photoreaction layer are It is connected by a vertical connector, and the lower part of the photoreactor at the left end of the photoreaction layer and the upper part of the photoreactor at the left end of the photoreaction layer are connected by the vertical connection tube. In addition, hydrogen peroxide inlets are formed / installed on one photoreactor of b photoreaction layer and one photoreactor of c photoreaction layer, respectively, and wastewater outlets are formed / installed on one photoreactor of c photoreaction layer. .
또한, 상기 다수개의 광반응기(10)내에 설치되어 있는 광조사부(12)의 자외선 램프(121)는 자외선 램프 안정기(도시없음)와 연결되어 있으며, 상기 상/하/좌/우로 연결/설치된 광반응기(10)의 양단부는 광반응기 고정대(70)에 의해 고정되어 있다.In addition, the ultraviolet lamp 121 of the light irradiation unit 12 installed in the plurality of photoreactor 10 is connected to the ultraviolet lamp ballast (not shown), the light is connected / installed up / down / left / right Both ends of the reactor 10 are fixed by the photoreactor holder 70.
또한, 상기 최하단 광반응층의 광반응기내에는 첨가되는 염화제이철과 과산화수소의 반응인 펜톤산화반응만이 일어나도록 광조사부가 설치되어 있지 않다. 즉, 광산화 반응 종결시, 대부분의 철이온이 2가 형태로 존재하게 되어 광산화 공정 처리수의 중화시 2가 철형태의 슬러지가 발생되어 침전효과가 떨어지는 현상을 미연에 방지하였다.In addition, the light irradiation unit is not provided in the photoreactor of the lowest photoreaction layer so that only the fenton oxidation reaction, which is the reaction of the added ferric chloride and hydrogen peroxide, occurs. That is, at the end of the photooxidation reaction, most of the iron ions were present in the form of divalent, and the neutralization of the treated water of the photocatalytic process caused the occurrence of sludge in the form of divalent iron, thereby preventing the precipitation effect.
상기와 같이 구성된 본 발명은 최상층 광반응층의 일측 광반응기에 형성된 폐수 유입구와 염화제이철 투입구 및 과산화수소 투입구를 통해 폐수와 염화제이철 및 과산화수소를 투입하면, 유입된 폐수는 수평연결관을 통해 다수개의 반응기를 따라 수평이동하면서 광산화 반응이 진행된 후, 수직연결관을 통해 하부에 위치한 또다른 광반응층의 광반응기내로 이동하게 되다. 이때, 상기 각각의 광반응기내를 흐르는 폐수는 관반응기 내에 설치된 방해판에 의해 흐름이 지연되고, 혼합효율이 향상된다.According to the present invention configured as described above, when the wastewater inlet, ferric chloride inlet and hydrogen peroxide inlet are formed in one side of the photoreactor of the uppermost photoreaction layer, and the wastewater and ferric chloride and hydrogen peroxide are introduced, the introduced wastewater is connected to a plurality of reactors through horizontal connection tubes. After the photooxidation progresses while moving horizontally along, it is moved into the photoreactor of another photoreaction layer located below through the vertical connection tube. At this time, the wastewater flowing in each photoreactor is delayed by the blockage plate installed in the tube reactor, and the mixing efficiency is improved.
이와 같이 하부로 이동된 폐수는 또다시 수평연결관을 통해 지그재그로 다수개의 광반응기를 따라 이동되고 수직연결관에 의해 하부의 광반응층으로 이동된다. 이때, 상기 수직연결관이 설치된 광반응층의 일측에 설치되어 있는 과산화수소 투입구를 통해 적당량의 과산화수소를 첨가한다.The wastewater thus moved to the bottom is again moved along the plurality of photoreactors in a zigzag through the horizontal connector and to the lower photoreaction layer by the vertical connector. At this time, an appropriate amount of hydrogen peroxide is added through the hydrogen peroxide inlet installed at one side of the photoreaction layer in which the vertical connection pipe is installed.
상기 산화제인 과산화수소는 염화제이철과 달리 일시에 필요한 양을 공급하지 않고 각 광반응층 마다 분할하여 주입하는 이유는 과산화수소의 자기분해현상 등과 같은 현상을 방지하기 위함이다.Unlike ferric chloride, hydrogen peroxide, which is an oxidizing agent, is separately injected into each photoreaction layer without supplying the necessary amount at a time to prevent phenomena such as self-decomposition of hydrogen peroxide.
상기 광산화 반응을 마친 폐수는 폐수 배출관을 통해 배출되어 응집반응을 위한 중화조(200)로 유입되고, 중화조(200)에서는 유입폐수를 pH 7.5∼8로 조절하여 3가 철 프록이 형성되도록 되어 있다. 또한, pH 조절이 끝단 폐수는 침전조(300)에서 최종 처리수(400)와 철 슬러지(500)로 분리되도록 되며, 침전조(300)에서 발생된 철수화물 형태의 슬러지는 pH 조정조(600)에 재유입되어 염산과 반응하여 철염으로 전환되고, 재생된 철염은 본 발명에서 철염으로 재사용된다.The wastewater after the photo-oxidation reaction is discharged through the wastewater discharge pipe is introduced into the neutralization tank 200 for the flocculation reaction, and in the neutralization tank 200 to adjust the inflow wastewater to pH 7.5 to 8 to form a trivalent iron flock. have. In addition, the end of the pH control wastewater is to be separated into the final treated water 400 and the iron sludge 500 in the sedimentation tank 300, the sludge in the form of the iron hydrate generated in the sedimentation tank 300 is re-installed in the pH adjustment tank 600 It is introduced and reacted with hydrochloric acid to be converted to iron salt, and the regenerated iron salt is reused as iron salt in the present invention.
이하 본 발명을 실시예에 의거 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to Examples.
실시예 1Example 1
도 5 는 N-S 화합물중 주요 COD 기여성분인 하이드록실 아민 100 ppm를 함유한 합성폐수를 광산화 반응기에 의해 처리한 결과도를 도시한 것으로, 도 5 에서 볼 수 있듯이 하이드록실 아민(hydroxyl amine) 산화속도가 매우 빠른 것으로 나타났다. 즉, 반응 초기에 대부분의 하이드록실 아민(hydroxyl amine)이 분해되었으며, 반응 5분 후에는 하이드록실 아민(hydroxyl amine)이 완전 분해되어 CODcr으로는 측정이 되지 않았다.FIG. 5 shows a result of treating synthetic wastewater containing 100 ppm of hydroxyl amine, which is a major COD contributing component among NS compounds, by a photooxidation reactor. As shown in FIG. 5, the oxidation rate of hydroxyl amine (hydroxyl amine) is shown. Appeared to be very fast. That is, most of the hydroxyl amine (hydroxyl amine) was decomposed at the beginning of the reaction, and 5 minutes after the reaction, the hydroxyl amine (hydroxyl amine) was completely decomposed and could not be measured by CODcr.
실시예 2Example 2
기존의 탈황폐수 처리에 사용되고 있는 화학적 산화제를 이용한 처리공정과 광산화공정에 대한 하이드록실 아민 제거율, 약품사용량 및 반응시간을 비교하면 [표 1] 과 같다.Table 1 shows a comparison of the hydroxyl amine removal rate, chemical usage and reaction time for the treatment process using the chemical oxidant and the photooxidation process used in the conventional desulfurization waste water treatment.
[표 1]TABLE 1
본 발명은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위내에 있게 된다.The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.
이와 같이 본 발명은 내부에 방해판을 구비하는 광반응기를 병렬연결하고, 병렬 연결된 다수개의 광반응기를 다단으로 연결/형성하여, 폐수의 반응기내 체류시간을 증대하였으며, 이로 인해 분해제거효율을 증가시켰다.As described above, the present invention increases the residence time of the wastewater in the reactor by connecting / forming photoreactors having a blockboard therein in parallel and connecting / forming a plurality of parallel connected photoreactors in multiple stages, thereby increasing decomposition removal efficiency. I was.
또한, 산화제인 과산화수소를 분할하여 주입하도록 되어 있어, 과산화수소의 자기분해현상을 미연에 방지하였다.In addition, hydrogen peroxide, which is an oxidizing agent, is divided and injected, thereby preventing autolysis of hydrogen peroxide.
또한, 폐수 배출구를 구비하는 최하단층 다수개의 광반응기내에 광조사부를 설치하지 않아, 광산화 공정 처리수의 중화시 2가 철 형태의 슬러지 발생에 따른 침전효과 저하를 방지할 수 있는 등 많은 효과가 있다.In addition, since the light irradiation part is not installed in the lowermost layer of the plurality of photoreactors having the wastewater discharge port, there are many effects such that the precipitation effect due to the generation of bivalent iron-type sludge can be prevented during the neutralization of the treated water. .
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101142865B1 (en) * | 2010-02-17 | 2012-05-10 | 연세대학교 산학협력단 | Wastewater treatment apparatus and system using bio filter |
| KR101660428B1 (en) * | 2015-11-24 | 2016-09-29 | 에스앤피환경주식회사 | Photo oxidation reactor |
| CN116282466A (en) * | 2022-12-30 | 2023-06-23 | 南京大学盐城环保技术与工程研究院 | Photocatalytic oxidation process and reaction device for treating high-concentration refractory organic wastewater |
| KR102571157B1 (en) * | 2023-05-30 | 2023-08-24 | 서울대학교산학협력단 | Water treatment apparatus for decomposing perfluoroalkyl and polyfluoroalkyl substances with vacuum ultraviolet |
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2001
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101142865B1 (en) * | 2010-02-17 | 2012-05-10 | 연세대학교 산학협력단 | Wastewater treatment apparatus and system using bio filter |
| KR101660428B1 (en) * | 2015-11-24 | 2016-09-29 | 에스앤피환경주식회사 | Photo oxidation reactor |
| CN116282466A (en) * | 2022-12-30 | 2023-06-23 | 南京大学盐城环保技术与工程研究院 | Photocatalytic oxidation process and reaction device for treating high-concentration refractory organic wastewater |
| CN116282466B (en) * | 2022-12-30 | 2024-05-03 | 南京大学盐城环保技术与工程研究院 | Photocatalytic oxidation process and reaction device for treating high-concentration refractory organic wastewater |
| KR102571157B1 (en) * | 2023-05-30 | 2023-08-24 | 서울대학교산학협력단 | Water treatment apparatus for decomposing perfluoroalkyl and polyfluoroalkyl substances with vacuum ultraviolet |
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