KR20010067693A - Air floatation type photocatalytic water treatment system - Google Patents
Air floatation type photocatalytic water treatment system Download PDFInfo
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- KR20010067693A KR20010067693A KR1020010012085A KR20010012085A KR20010067693A KR 20010067693 A KR20010067693 A KR 20010067693A KR 1020010012085 A KR1020010012085 A KR 1020010012085A KR 20010012085 A KR20010012085 A KR 20010012085A KR 20010067693 A KR20010067693 A KR 20010067693A
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- photocatalyst
- water
- water treatment
- titanium dioxide
- air
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 230000001699 photocatalysis Effects 0.000 title claims description 7
- 239000011941 photocatalyst Substances 0.000 claims abstract description 42
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 238000009434 installation Methods 0.000 claims description 8
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 235000006408 oxalic acid Nutrition 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- -1 Titanium alkoxide Chemical class 0.000 claims 1
- 238000000498 ball milling Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 claims 1
- 239000010936 titanium Substances 0.000 claims 1
- 239000000356 contaminant Substances 0.000 abstract description 4
- 238000005188 flotation Methods 0.000 abstract description 4
- 239000010453 quartz Substances 0.000 abstract description 4
- 230000001678 irradiating effect Effects 0.000 abstract description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 16
- 238000006552 photochemical reaction Methods 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910002370 SrTiO3 Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000000108 ultra-filtration 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
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
Abstract
Description
산업의 발달과 과도한 농약의 사용에 따라 하천 및 호수 등의 수질은 기존의 생물학적, 물리, 화학적 수처리 방법에 의해 분해되지 않는 난분해성 오염물질이 점차 증가하고 있으며, 이러한 난분해성 오염물질의 처리방법으로서 고도산화처리기술에 대한 요구가 증대되고 있는 시점에서 단지, 광촉매에 광에너지를 조사하여 상온에서도 난분해성 오염물질의 완전 분해가 가능한 자외선과 광촉매를 이용한 광화학반응에 대한 관심이 크게 부각되고있다.With the development of industry and excessive use of pesticides, the quality of rivers, lakes, etc. is gradually increasing hardly decomposable pollutants which are not decomposed by conventional biological, physical and chemical water treatment methods. At a time when the demand for advanced oxidation treatment technology is increasing, interest in photochemical reaction using ultraviolet light and photocatalyst which can completely decompose hardly degradable contaminants even at room temperature by irradiating light energy to photocatalyst is increasing.
광화학반응에 적용 가능한 광촉매는 종류가 다양하여 TiO2, ZnO, CdS, ZrO2, V2O3, WO3 등과 페로브스카이트형 복합금속산화물(SrTiO3) 등이 있으며, 자외선과 광촉매를 이용한 광화학반응은 TiO2와 같은 광촉매에 띠간격(band gap)(=3.0∼3.2eV)이상인 400nm이하의 광에너지를 조사시키면 가전자대(valence band)로부터 전도대(conduction band)로 전자가 전이되며, 이에 의해 생성된 전자와 정공(hole)은 광촉매 표면으로 확산, 이동하여 전자는 산소나 금속이온을 환원시키며, 정공은흡착된 수용물질과 반응하여 OH radical 및 superoxide radical 등을 생성하여 난분해성 유기 오염물질을 분해시키게 된다.There are various types of photocatalysts that can be applied to photochemical reactions, which include TiO2, ZnO, CdS, ZrO2, V2O3, WO3, and perovskite-type composite metal oxides (SrTiO3). Irradiation of light energy of 400 nm or less with a band gap (= 3.0 to 3.2 eV) or higher causes electrons to be transferred from a valence band to a conduction band, thereby generating electrons and holes. The silver diffuses and moves to the surface of the photocatalyst, and the electrons reduce oxygen or metal ions, and the holes react with the adsorbed sorbent to generate OH radicals and superoxide radicals to decompose the hardly decomposable organic pollutants.
그러나, 기존의 광화학반응은 주로 분말형태의 광촉매 입자를 사용되었으나 미세한 광촉매 분말 입자(약 0.2㎛)는 분산상으로 침전성이 좋지 않아 제거 및 회수를 위한 정밀여과막, 한외여과막 등 고가의 여과설비가 수반되어야 하는 문제점이 제기 되어왔으며, 이러한 문제의 해결방안으로 대두되고 있는 광촉매가 코팅된 담체 고정화 방법 또한 광화학반응을 위한 별도의 설비를 설치해야하는 것으로 알려져 있다.However, the conventional photochemical reaction mainly used powder type photocatalyst particles, but fine photocatalyst powder particles (about 0.2㎛) are dispersed in phase and do not have good sedimentability, and thus, expensive filtration facilities such as microfiltration membrane and ultrafiltration membrane for removal and recovery are accompanied. It has been proposed that the problem to be solved, the photocatalyst-coated carrier immobilization method that is emerging as a solution to this problem is also required to install a separate equipment for the photochemical reaction.
본 발명은 공기의 힘에 의하여 광촉매가 코팅된 담체가 수중에서 부상되면서 광촉매와 수중에 존재하는 오염물질의 접촉기회를 증대시킨 공기부상형 광촉매 수처리 장치로써, 광촉매 분말을 회수하기 위한 별도의 부대시설을 설치할 필요가 없으며, 설치 및 유지관리가 편리하며, 광촉매와 오염물질과의 접촉기회를 증대시킴으로서 오염물질의 제거효율을 극대화 시킬 수 있는 수처리 장치를 제공하였다.The present invention is an air flotation type photocatalyst water treatment apparatus in which a photocatalyst coated carrier is floated in water by air force, thereby increasing the contact opportunity of photocatalyst and contaminants present in the water. It is not necessary to install the product, it is convenient to install and maintain, and it provides a water treatment device that can maximize the removal efficiency of pollutants by increasing the contact opportunity between photocatalyst and pollutants.
제1도는 본 발명에 따른 공기부상형 광촉매 수처리 장치의 입면도1 is an elevational view of an airborne photocatalytic water treatment device according to the present invention.
제2도는 본 발명에 따른 공기부상형 광촉매 수처리 장치의 개념도2 is a conceptual diagram of an air flotation photocatalyst water treatment device according to the present invention.
제3도는 본 발명에 따른 공기부상형 광촉매 수처리 장치의 공기 및 광촉매 유동도3 is a flow chart of air and photocatalyst of the air flotation type photocatalytic water treatment device according to the present invention.
※ 도면 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing
10: 석영관 11: 자외선램프10: quartz tube 11: ultraviolet lamp
12 : 고정판 13 : 고정판조립나사12: fixing plate 13: fixing plate assembly screw
14 : 전선 15 : 상부덮게14: wire 15: upper cover
20 : 광촉매안내판 21 : 공기분사노즐20: photocatalyst guide 21: air spray nozzle
30 : 광촉매담체 31 : 광촉매유동경로30: photocatalyst carrier 31: photocatalyst flow path
40 : 공기압축기 41 : 압축공기조정밸브40: air compressor 41: compressed air control valve
42 : 공기챔버 43 : 공기유동경로42: air chamber 43: air flow path
50 : 콘트롤러장치50: controller device
60 : 과산화수소펌프 61 : 과산화수소저장조60: hydrogen peroxide pump 61: hydrogen peroxide storage tank
62 : 과산화수소조정밸브62: hydrogen peroxide adjustment valve
70 : 레벨게이지70: Level Gauge
80 : 처리수입구 81 : 처리수출구80: treatment outlet 81: treatment outlet
82 : 처리수조절밸브82: treatment water control valve
90 : 광촉매안내경사각90: photocatalyst guide tilt angle
100 : 공기분사노즐설치각100: Air spray nozzle installation angle
상기의 목적을 달성하기 위한 본 발명에서의 광촉매인 이산화티타늄(TiO2)이 코팅된 광촉매담체의 제조법을 설명하면 다음과 같다.Hereinafter, a method for preparing a photocatalyst carrier coated with titanium dioxide (TiO 2), which is a photocatalyst according to the present invention, is as follows.
일정부피의 용기에 물(H2O)60g과 옥살릭엑시드(Oxalic Acid, C2H2O4) 16g을 정량하여 혼합한 후 열을 가하면서 교반하여 완전 용해하고 티타늄알콕사이드(Titanium alkoxide, Ti(OCnH2n+1)4) 18g을 넣고이산화티타늄(TiO2) 졸(sol)을 만든후 여기에 이산화티타늄 분말 20g을 혼합하여 볼 밀(Ball Mill)로 5분 이상 분쇄한 후 이 용액을 세라믹, 유리, 실리카겔 등에 담금법으로 코팅하여 상온에서 1일 건조한 후 5∼10℃/min으로 승온한 후 500℃에서 5시간 이상 방치하고 5∼10℃/min으로 감온하는 작업을 3회 반복하여 실시하여 이산화티타늄이 코팅된 광촉매담체(30)를 제조하였다.60 g of water (H2O) and 16 g of oxalic acid (C2H2O4) were mixed in a volume of a container, mixed with heat and stirred to dissolve completely. After adding 18g to make titanium dioxide (TiO2) sol, 20g of titanium dioxide powder is mixed and pulverized in a ball mill for at least 5 minutes, and the solution is coated with ceramic, glass, silica gel, etc. After drying at room temperature for 1 day, the temperature was raised to 5 to 10 ° C./min, and left at 500 ° C. for at least 5 hours, and the temperature was reduced to 5 to 10 ° C./min. ) Was prepared.
고압의 공기는 공기압축기(40)에서 공기챔버(42)을 통과한 후 공기분사노즐(21)를 통해서 수처리장치로 유입시키며 공기는 수처리 장치안에서 공기유동경로(43)로 운동하며 광촉매담체(30)는 공기의 힘에 의하여 광촉매유동경로(31)를 따라서 운동하고 광촉매안내판(20)을 따라 회전하면서 수처리 장치 안에서 계속 순환한다.The high pressure air passes through the air chamber 42 in the air compressor 40 and then flows into the water treatment apparatus through the air spray nozzle 21. The air moves in the water treatment apparatus in the air flow path 43 and the photocatalyst carrier 30 ) Moves along the photocatalyst flow path 31 by the force of air and rotates along the photocatalyst guide plate 20 and continues to circulate in the water treatment apparatus.
자외선램프(11)는 석영관(10)안에 있으며 수처리장치 상부덮게(15)와 고정판조립나사(13)에 의해 조립이 되며 수처리장치 안에서 자외선을 조사하게 한다.The ultraviolet lamp 11 is in the quartz tube 10 and is assembled by the upper cover 15 of the water treatment device and the fixing plate assembly screw 13 to irradiate ultraviolet rays in the water treatment device.
상부덮게(15)는 공기가 주입되는 일축의 반대방향에 설치하여 처리수나 담체가 이탈되거나 자외선이 외부로 방출되지 못하게 한다.The upper cover 15 is installed in a direction opposite to the one axis through which air is injected, thereby preventing the treated water or the carrier from being separated or emitting ultraviolet rays to the outside.
광촉매안내판(20)은 일정한 광촉매안내경사각(90)으로 광촉매의 비중 및 수처리장치의 크기에 따라 설치하며 공기분사노즐설치각(100)은 수처리 장치의 크기에 따라 설치시 설치각을 조절한다.The photocatalyst guide plate 20 is installed according to the specific photocatalyst guide inclination angle 90 according to the specific gravity of the photocatalyst and the size of the water treatment device, and the air spray nozzle installation angle 100 adjusts the installation angle upon installation according to the size of the water treatment device.
처리수는 처리수입구(80)을 통하여 유입되며 처리된 처리수는 레벨게이지(70)을 통하여 처리수량을 측정하며 처리수는 처리수조절밸브(82)을 통하여 배출한다.The treated water is introduced through the treated water inlet 80, and the treated water is measured through the level gauge 70, and the treated water is discharged through the treated water control valve 82.
과산화수소는 과산화수소저장조(61)에서 과산화수소펌프(60)에 의해 과산화수소조정밸브(62)을 통하여 반응조에 유입되며 그 양은 과산화수소량 및 용존산소량을 조절하도록 구성한 콘트롤러장치(50)에 의해 조절된다.Hydrogen peroxide is introduced into the reaction tank through the hydrogen peroxide adjusting valve 62 by the hydrogen peroxide pump 60 in the hydrogen peroxide storage tank 61 and the amount thereof is controlled by the controller device 50 configured to control the amount of hydrogen peroxide and the amount of dissolved oxygen.
본 발명은 공기의 힘에 의하여 이산화티타늄이 코팅된 광촉매담체가 수중에서 부상되면서 광촉매와 수중의 오염물질 간의 접촉기회를 증대시키고 설치 및 유지 관리가 용이하게 한 공기부상형 광촉매 수처리 장치로써, 기존의 분말 및 입자상 광화학 반응장치로부터 광촉매 분말 회수의 문제점를 해결하고 시설설치 및 유지관리의 소요비용의 절감 등과 광화학 장치 설치를 위한 별도의 시설 설치가 필요치 않는 등의 장점이 있다.The present invention is an air-floating photocatalytic water treatment device in which a titanium dioxide-coated photocatalyst carrier is floated in water by air force to increase the contact opportunity between the photocatalyst and contaminants in water and facilitate installation and maintenance. Solving the problem of the photocatalyst powder recovery from the powder and particulate photochemical reaction device, the reduction of the cost of installation and maintenance of the facility and the installation of a photochemical device does not need to install a separate facility.
Claims (5)
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| KR1020010012085A KR20010067693A (en) | 2001-03-08 | 2001-03-08 | Air floatation type photocatalytic water treatment system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100503233B1 (en) * | 2002-10-21 | 2005-07-22 | (주)킵솔 | Preparation of photocatalytic thin film and water-treatment apparatus using thereof |
| WO2008113128A1 (en) * | 2007-03-19 | 2008-09-25 | Viva Blu Pty Ltd | Method and apparatus for effecting a predetermined transformation |
| ITUD20090117A1 (en) * | 2009-06-15 | 2010-12-16 | Med Italia Srl | PURIFICATION SYSTEM FOR LIQUIDS AND ACTIVATED SYSTEM |
| KR20150109192A (en) * | 2014-03-19 | 2015-10-01 | 한양대학교 에리카산학협력단 | Waste water treatment apparatus using fluidizing phase photocatalyst |
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|---|---|---|---|---|
| JPS60118289A (en) * | 1983-11-30 | 1985-06-25 | Giken Kogyo Kk | Water purifying method |
| JPS6349296A (en) * | 1986-08-18 | 1988-03-02 | Nec Corp | Treatment of cyan-containing waste water |
| JPH07284764A (en) * | 1994-04-19 | 1995-10-31 | Shoji Hirayama | Method and apparatus for treating waste water containing bacteria |
| KR20000059854A (en) * | 1999-03-09 | 2000-10-16 | 이정형 | Method of nitrogen removal in wastewater with photocatalytic technology |
| KR20010007771A (en) * | 2000-09-05 | 2001-02-05 | 김현용 | Water immersion type photochemical reaction device using UV and photocatalytic thin film |
| KR20010037774A (en) * | 1999-10-20 | 2001-05-15 | 박호군 | Electrochemical Wastewater Treatment System |
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2001
- 2001-03-08 KR KR1020010012085A patent/KR20010067693A/en not_active Application Discontinuation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60118289A (en) * | 1983-11-30 | 1985-06-25 | Giken Kogyo Kk | Water purifying method |
| JPS6349296A (en) * | 1986-08-18 | 1988-03-02 | Nec Corp | Treatment of cyan-containing waste water |
| JPH07284764A (en) * | 1994-04-19 | 1995-10-31 | Shoji Hirayama | Method and apparatus for treating waste water containing bacteria |
| KR20000059854A (en) * | 1999-03-09 | 2000-10-16 | 이정형 | Method of nitrogen removal in wastewater with photocatalytic technology |
| KR20010037774A (en) * | 1999-10-20 | 2001-05-15 | 박호군 | Electrochemical Wastewater Treatment System |
| KR20010007771A (en) * | 2000-09-05 | 2001-02-05 | 김현용 | Water immersion type photochemical reaction device using UV and photocatalytic thin film |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100503233B1 (en) * | 2002-10-21 | 2005-07-22 | (주)킵솔 | Preparation of photocatalytic thin film and water-treatment apparatus using thereof |
| WO2008113128A1 (en) * | 2007-03-19 | 2008-09-25 | Viva Blu Pty Ltd | Method and apparatus for effecting a predetermined transformation |
| ITUD20090117A1 (en) * | 2009-06-15 | 2010-12-16 | Med Italia Srl | PURIFICATION SYSTEM FOR LIQUIDS AND ACTIVATED SYSTEM |
| KR20150109192A (en) * | 2014-03-19 | 2015-10-01 | 한양대학교 에리카산학협력단 | Waste water treatment apparatus using fluidizing phase photocatalyst |
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