WO2010055982A1 - 잔류오존을 제거하는 상향류식 오존접촉조 - Google Patents
잔류오존을 제거하는 상향류식 오존접촉조 Download PDFInfo
- Publication number
- WO2010055982A1 WO2010055982A1 PCT/KR2009/002820 KR2009002820W WO2010055982A1 WO 2010055982 A1 WO2010055982 A1 WO 2010055982A1 KR 2009002820 W KR2009002820 W KR 2009002820W WO 2010055982 A1 WO2010055982 A1 WO 2010055982A1
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- WO
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- Prior art keywords
- ozone
- upflow
- contact
- chamber
- contact tank
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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
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
- B01D24/16—Upward filtration
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
Definitions
- the present invention relates to an ozone contact tank for removing residual ozone by means of carbonaceous media, in particular anthracite, and more particularly to an ozone contact tank for influent to penetrate the carbonaceous media from below to remove residual ozone.
- the ozone treatment process also belongs to the highly purified water treatment field.
- ozone ozone; O 3
- THM trihalomathane
- Ozone is divided into pre-ozonation, intermediate-ozonation and post-ozonation depending on the injection point.
- Pre-ozonation refers to ozone treatment in the intake stage.
- Zone treatment refers to the injection of sedimentation basin, more specifically, in front of the sand filter.
- post ozone treatment means injecting ozone into the rear end of the sand filter paper.
- granular activated carbon processes are connected and operated as bioactive carbon processes in Korea.
- ozone is produced through ozone generator using air or oxygen as source gas, and gaseous ozone is dissolved in water through an acid pipe (or ejector).
- ozone is not completely dissolved in 100% water, and the remaining ozone in contact with water is transferred to the ozone destructor at the top of the sealed ozone contact tank for disposal.
- ozone gas is frequently used for water treatment due to the water quality improvement effect of ozone
- prolonged inhalation of the ozone gas reaches bronchioles or alveoli, causing emphysema, and reacts with biological materials to produce peroxides, resulting in chromosomal abnormalities or It can change red blood cells. Therefore, operators of water purification plants should be careful not to be exposed to gaseous ozone.
- the ozone contact bath is hermetically sealed to handle the ozone in the contact bath but is exposed to various problems in the process after the ozone contact bath. Ozone gas is volatilized when water containing residual ozone is exposed to the atmosphere.
- ozone is injected to maintain the residual ozone concentration in the effluent in the range of 0.03 to 0.4 mg / L, and the granular activated carbon to be applied as a post-stage process after the ozone contacting tank is moved downwardly (from top to bottom). Because of the open top of the granular activated carbon, there is no choice but to smell ozone.
- the metallic structural members in the granular activated carbon have high corrosion resistance. The material must be used.
- the upper part of the granular activated carbon is covered so as not to be exposed to ozone gas, but these facilities have difficulty in directly confirming the management and process operation status.
- visitors or operators of the water treatment plant will recognize that the water treatment process is a dangerous facility.
- chemicals such as potassium thiosulfate, sodium sulfite and hydrogen peroxide, for this purpose, the increase in operating costs is inevitable and environmentally friendly methods are not available due to the handling and use of chemicals.
- the present invention was created to solve the above-mentioned problems, and is characterized by installing an upflow ozone contacting tank unlike a conventional downflow granular activated carbon contacting tank.
- the present invention includes an upflow ozone contact tank between an existing ozone contact tank and a granular activated carbon tank.
- it controls the flow rate of raw water (water) to flow into the upflow ozone contact tank and removes residual ozone more actively by using various carbonaceous media.
- the present invention uses granular activated carbon as a carbonaceous medium.
- the present invention uses anthracite as a carbonaceous medium to cause oxidation with carbon to remove residual ozone.
- anthracite has the advantage of having a low specific gravity and a low expansion rate due to its larger specific gravity than granular activated carbon.
- the present invention is provided to remove the residual ozone by passing the water containing the residual ozone through the carbonaceous media.
- the present invention removes residual ozone by supplying water containing residual ozone from bottom to top, that is, upward flow, to penetrate the carbonaceous media.
- the present invention is designed to supply the raw water in an upflow, it is operated in a state where the carbonaceous medium is slightly expanded has the advantage that the head loss due to turbidity retention in the filter medium hardly occurs.
- the present invention can reliably remove residual ozone to solve the problem of ozone odor and corrosion in the post-stage process, and does not use external power and chemicals to provide environmentally friendly technology.
- FIG. 1 is a schematic side view of an upflow ozone contact tank according to the present invention.
- FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1.
- Figure 3 is a graph of the residual ozone concentration of the effluent flowing through and exiting the carbonaceous particulate medium in the upflow ozone contact tank according to the present invention.
- Figure 4 is a graph of the residence time of the influent and the residual ozone concentration of the effluent in the carbonaceous particulate medium in the upflow ozone contact tank according to the present invention.
- FIG. 5 is a graph illustrating residual ozone concentration of influent and effluent water in an upflow ozone contact tank according to the present invention.
- Figure 1 is a schematic side view of the upflow ozone contact tank according to the present invention, the arrow shown indicates the flow direction of water.
- the upflow ozone contact tank 1 according to the present invention is similar to the ozone contact tank (not shown) of the prior art, and the inlet 100 into which the purified water is introduced, The diffuser 101, at least one contact chamber 102, at least one reaction chamber 103, and an outlet 110 for discharging ozonated raw water.
- the present invention and the prior art has a very similar structure, it is possible to easily change the last reaction chamber of the ozone contact tank according to the prior art to the upflow contact chamber according to the present invention, which is only the present invention It is also a feature.
- ozone is injected into the pipeline using an ejector and a nozzle before flowing into the ozone contacting tank instead of the diffuser 101.
- the present invention can be applied because the system changes only at the rear end of the ozone contact portion.
- the present invention is a structure used in the ozone treatment process of the purified water treatment process, a structure for ozone treatment.
- the description is based on a post ozone treatment process, which is widely distributed in Korea, and it is known that the present invention can be applied to a pre-zone treatment process or a heavy ozone treatment process depending on the situation.
- the present invention is passed through the sand filter paper (filter) and attached to the filter medium and the inlet 100 is introduced into the raw water to remove the turbidity through the sieve in the filter layer, at least one contact chamber 102, at least one reaction chamber 103 ), A bottom up contact chamber 104, and a discharge port 110 for discharging the treated water passing through the upflow contact chamber 104.
- the upflow ozone contact tank 1 of the present invention is composed of a plurality of chambers as described, and the three contact chambers 102 and the three reaction chambers 103 and the outlet 110 on the front end side adjacent to the inlet 100. At the rear end side adjacent to is one or more upflow contact chambers 104. In FIG. 1, three contact chambers 102, three reaction chambers 103, and one upflow contact chamber 104 are illustrated, but the number may vary depending on the surrounding situation and design.
- the contact chamber 102 provides space and time for sufficiently contacting the gaseous ozone to be injected with the raw water by means of the diffuser 101 installed at the bottom thereof.
- the reaction chamber 103 provides a space in which residual ozone and raw water can react.
- the upflow contact chamber 104 according to the upflow ozone contact tank 1 of the present invention is designed at the rear end of the upflow ozone contact tank 1, and the carbonaceous media 12 are disposed therein so that the carbon The residual ozone is removed from the raw water containing the residual ozone in contact with the filter medium 12. Residual ozone is not removed through adsorption reaction with the carbonaceous media but in contact with the following equation.
- the contact chamber 102 and the reaction chamber 103 direct the flow of raw water downwardly from the top of the chamber to the bottom of the chamber, as shown by arrows, to ensure contact time and reaction time, while
- the flow contact chamber 104 allows flow from the bottom of the chamber to the top of the chamber.
- 105 is provided. Although not shown, the ozone transferred along the ozone outlet 105 is removed so as not to leak outside in an ozone destroyer (not shown).
- a gate portion 10 is provided under the panel that separates the final reaction chamber 103 from the upflow contact chamber 104, and the gate portion 10 is openable.
- the raw water introduced into the upflow contact chamber 104 from the reaction chamber 103 through the open gate portion 10 may pass through the carbonaceous media 12 to remove residual ozone.
- the carbonaceous media 12 may be seated on the porous plate 11 to be supported.
- the raw water introduced through the porous plate 11 is evenly distributed to pass through the carbonaceous media 12 and is preferably made of a material having ozone resistance.
- the porous plate 11 may apply integral media support (IMS).
- the rectifying plate may be provided before the porous plate 11 is reached to provide a buffering action.
- Raw water passing through the carbonaceous medium 12 is introduced into the purified water along the outlet 110, or sent to the granular activated carbon tank provided in the prior art to remove the final residual ozone.
- the ozonated raw water to be discharged to the outlet 110 is filled with granular activated carbon or anthracite, which is carbonaceous medium 12, inside the water pipe in fluid communication between the outlet 110 and the subsequent process to further remove ozone. You may.
- the carbonaceous medium 12 uses granular activated carbon or anthracite, more preferably anthracite. Since anthracite has a smaller particle size than granular activated carbon, when the contact area with the raw water is increased, residual ozone can be removed in comparison with the granular activated carbon at the residual ozone concentration value as illustrated in FIGS. 3 to 5. This will be described later.
- the turbidity moving along the raw water is attached or filtered on the surface of the carbonaceous media 12, so that the turbidity accumulates on the carbonaceous media 12, thereby increasing the head loss, and the carbonaceous media 12
- the water level in the upflow ozone contact tank 1 of the present invention is increased. This level rise is detected by means of the water level gauge 20 so as to preserve the durability of the ozone contact tank 1, so as not to adversely affect the purified water treatment.
- a pressure gauge may be provided in place of the level gauge.
- FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1.
- the upflow contact chamber 104 of the present invention includes a gate portion 10, a porous plate 11, and a carbonaceous medium 12 for controlling the flow rate of raw water.
- the rectifying plate may be installed below the porous plate 11.
- the upflow contact chamber 104 is separated into one or more compartments, preferably two compartments, in parallel arrangement (in a direction perpendicular to the longitudinal direction of the ozone contact bath). Specifically, when a lot of turbidity accumulates in the carbonaceous medium 12 provided in the upflow contact chamber 104 and the level of the ozone contact tank 1 (see FIG. 1) increases, one of the two contact chambers 104 is formed. To close the gate portion 10. The remaining gate portion 10 remains open. Since one gate portion 10 is closed, the flow rate of raw water flowing into the upflow contact chamber 104 through the open gate portion 10 is increased. . At such a flow rate, the carbonaceous media 12 may expand and perform a backwash process to separate the turbidity from the carbonaceous media. The backwash drainage is further provided with a separate backwash discharge gate 14 at each upper end of the upflow contact chamber 104.
- the upflow contact chamber 104 is separated into two, and when replacing the carbonaceous medium 12 used for a long time, the gate portion 10 is alternately closed without interrupting the operation of the ozone contact tank of the present invention. It is designed to replace the carbonaceous media easily.
- the backwashing process may be performed by adjusting the gate of the inlet 100 while the gate portion 10 is in full bloom.
- Figure 3 is a graph of the residual ozone concentration of the effluent flowing through and exiting the carbonaceous media in the upflow ozone contact tank according to the present invention.
- the inflow residual ozone concentration of the upflow ozone contact tank according to the present invention After fixing the inflow residual ozone concentration of the upflow ozone contact tank according to the present invention to 0.6 mg / L which is a very high state (generally, the residual ozone concentration in the rear stage of the ozone contact tank of a domestic water purification plant is 0.05 to 0.4 mg / L),
- the removal effect of residual ozone concentration between granular activated carbon (GAC) and anthracite was analyzed according to the inflow rate of raw water flowing through the porous plate (11). In the case of granular activated carbon, the residual ozone is detected at 0.2 m / min or more as shown in the graph and in the case of anthracite at 1.0 m / min or more.
- Figure 4 is a graph of the residence time of the influent and the residual ozone concentration of the effluent in the carbonaceous particulate medium in the upflow ozone contact tank according to the present invention.
- the residence time required for the anthracite and granular activated carbon (GAC), which are carbonaceous media to be used in the upflow ozone contact tank according to the present invention, is 0.5 to 1 min for anthracite and 2 to 2.5 min for granular activated carbon. It can be seen that residual ozone does not appear in. This shows that anthracite effectively removes residual ozone at short contact times and at high flow rates compared to granular activated carbon.
- GAC granular activated carbon
- FIG. 5 is a graph illustrating residual ozone concentration of influent and effluent water in an upflow ozone contact tank according to the present invention.
- the inflow rate of raw water passing through the gate part 10 was fixed at 1.6 m / min, and the residual ozone concentration of raw water penetrated through the filter media (anthrasite and granular activated carbon) by changing the residual ozone concentration of the raw water was observed. .
- the residual ozone concentration of the effluent is detected at a residual ozone concentration of 0.4 mg / L in the inflow water in the case of granular activated carbon and 0.5 mg / L or more in the case of anthracite.
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
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Abstract
Description
Claims (6)
- 정수처리된 원수가 유입되는 유입구(100)와, 하나 이상의 접촉챔버(102), 하나 이상의 반응챔버(103) 및, 오존처리된 원수를 배출하는 배출구(110)으로 이루어진 오존접촉조에 있어서,상기 반응챔버(103)와 배출구(110) 사이에 배치된 상향류식 접촉챔버(104)와;다수의 구멍을 형성하고, 상기 상향류식 접촉챔버(104)를 가로질러 배치되어 있는 다공판(11);상기 다공판(11) 상에 안착되어 잔류오존을 제거하는 탄소성 여재(12) 및;상기 반응챔버(103)와 상향류 접촉챔버(104)를 구별하는 패널 하부에 구비된 하나 이상의 게이트부(10);로 이루어지며,상기 게이트부(10)는 개폐되어 상기 상향류식 접촉챔버(104)로 유입될 원수의 유입속도를 제어할 수 있고, 상기 반응챔버(103)에서 상기 상향류식 접촉챔버(104)로 유입된 원수가 상기 탄소성 여재(12) 아래에서 위로 관통하도록 상향류로 흐르도록 하는 것을 특징으로 하는 잔류오존을 제거하는 상향류식 오존접촉조.
- 제1항에 있어서, 상기 상향류 접촉챔버(104)는 1개 이상의 구획칸으로 병렬배치되게 분리되어 있는 것을 특징으로 하는 잔류오존을 제거하는 상향류식 오존접촉조.
- 제1항에 있어서, 상기 상향류식 오존접촉조(1)는 수위계(20)를 그 내부에 추가로 구비하는 것을 특징으로 하는 잔류오존을 제거하는 상향류식 오존접촉조.
- 제1항에 있어서, 상기 탄소성 여재(12)는 입상활성탄 또는 안트라사이트로 구성되는 것을 특징으로 하는 잔류오존을 제거하는 상향류식 오존접촉조.
- 제1항에 있어서, 상기 다공판(11) 앞에 정류판을 추가로 구비하는 것을 특징으로 하는 잔류오존을 제거하는 상향류식 오존접촉조.
- 제1항에 있어서, 상기 오존접촉조(1)에서 오존처리된 원수는 상기 오존접촉조(1)와 그 후속공정 사이를 유체연통하는 수관 내부에 탄소성 여재로 충전되어 있는 잔류오존을 제거하는 상향류식 오존접촉조.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CN2009801225743A CN102066271B (zh) | 2008-11-11 | 2009-05-28 | 用于去除残留臭氧的上流臭氧接触池 |
JP2011513410A JP5356512B2 (ja) | 2008-11-11 | 2009-05-28 | 残留オゾンを除去する上向流式オゾン接触槽 |
US12/999,307 US8834711B2 (en) | 2008-11-11 | 2009-05-28 | Upstream ozone contact tank for removing residual ozone |
Applications Claiming Priority (2)
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KR10-2008-0111426 | 2008-11-11 | ||
KR1020080111426A KR100890246B1 (ko) | 2008-11-11 | 2008-11-11 | 잔류오존을 제거하는 상향류식 오존접촉조 |
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WO2010055982A1 true WO2010055982A1 (ko) | 2010-05-20 |
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PCT/KR2009/002820 WO2010055982A1 (ko) | 2008-11-11 | 2009-05-28 | 잔류오존을 제거하는 상향류식 오존접촉조 |
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US (1) | US8834711B2 (ko) |
JP (1) | JP5356512B2 (ko) |
KR (1) | KR100890246B1 (ko) |
CN (1) | CN102066271B (ko) |
WO (1) | WO2010055982A1 (ko) |
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KR101102443B1 (ko) * | 2009-06-29 | 2012-01-05 | 유림엔마텍(주) | 물 부족 사태에 대비한 종합 수 처리방법 및 그 장치 |
KR101266846B1 (ko) | 2010-09-09 | 2013-05-23 | 최영규 | 강화된 접촉 장치를 사용한 오존 수처리 장치 |
CN102040276B (zh) * | 2010-12-28 | 2012-02-01 | 哈尔滨工业大学深圳研究生院 | 一种臭氧接触池及臭氧接触方法 |
CN104045146B (zh) * | 2013-03-15 | 2017-06-20 | 福建新大陆环保科技有限公司 | 一种气水快速混合的臭氧接触反应池 |
CN106976952A (zh) * | 2017-05-04 | 2017-07-25 | 重庆大学 | 一种导流结构及给水厂臭氧接触池水力效率优化系统 |
CN108585166A (zh) * | 2018-06-21 | 2018-09-28 | 北京金大万翔环保科技有限公司 | 一种高级氧化技术应用于污水深度处理的方法和系统 |
KR102393937B1 (ko) | 2020-04-24 | 2022-05-04 | 장진영 | 오존 제거 장치 |
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- 2008-11-11 KR KR1020080111426A patent/KR100890246B1/ko active IP Right Grant
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2009
- 2009-05-28 CN CN2009801225743A patent/CN102066271B/zh active Active
- 2009-05-28 US US12/999,307 patent/US8834711B2/en active Active
- 2009-05-28 JP JP2011513410A patent/JP5356512B2/ja active Active
- 2009-05-28 WO PCT/KR2009/002820 patent/WO2010055982A1/ko active Application Filing
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Also Published As
Publication number | Publication date |
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CN102066271B (zh) | 2013-09-11 |
US20110220558A1 (en) | 2011-09-15 |
CN102066271A (zh) | 2011-05-18 |
JP5356512B2 (ja) | 2013-12-04 |
US8834711B2 (en) | 2014-09-16 |
KR100890246B1 (ko) | 2009-03-24 |
JP2011522698A (ja) | 2011-08-04 |
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