KR20160148284A - Complex water treatment system using advanced oxidation process of two-step uv for combining hydrogen peroxide-uv process and chlorine-uv process, and method for the same - Google Patents
Complex water treatment system using advanced oxidation process of two-step uv for combining hydrogen peroxide-uv process and chlorine-uv process, and method for the same Download PDFInfo
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- KR20160148284A KR20160148284A KR1020150085081A KR20150085081A KR20160148284A KR 20160148284 A KR20160148284 A KR 20160148284A KR 1020150085081 A KR1020150085081 A KR 1020150085081A KR 20150085081 A KR20150085081 A KR 20150085081A KR 20160148284 A KR20160148284 A KR 20160148284A
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- Prior art keywords
- ultraviolet
- hydrogen peroxide
- chlorine
- injection amount
- water
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- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 41
- 125000004435 hydrogen atom Chemical class [H]* 0.000 title abstract 2
- 238000009303 advanced oxidation process reaction Methods 0.000 title 1
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- 230000003647 oxidation Effects 0.000 claims abstract description 88
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- 239000003814 drug Substances 0.000 claims description 40
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- LFYXNXGVLGKVCJ-FBIMIBRVSA-N 2-methylisoborneol Chemical compound C1C[C@@]2(C)[C@](C)(O)C[C@@H]1C2(C)C LFYXNXGVLGKVCJ-FBIMIBRVSA-N 0.000 claims description 10
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- DIDLWIPCWUSYPF-UHFFFAOYSA-N microcystin-LR Natural products COC(Cc1ccccc1)C(C)C=C(/C)C=CC2NC(=O)C(NC(CCCNC(=N)N)C(=O)O)NC(=O)C(C)C(NC(=O)C(NC(CC(C)C)C(=O)O)NC(=O)C(C)NC(=O)C(=C)N(C)C(=O)CCC(NC(=O)C2C)C(=O)O)C(=O)O DIDLWIPCWUSYPF-UHFFFAOYSA-N 0.000 claims description 7
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- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 claims description 5
- 239000012907 medicinal substance Substances 0.000 claims description 5
- JIGDOBKZMULDHS-UUHBQKJESA-N microcystin RR Chemical compound C([C@H](OC)[C@@H](C)\C=C(/C)\C=C\[C@H]1[C@@H](C(=O)N[C@H](CCC(=O)N(C)C(=C)C(=O)N[C@H](C)C(=O)N[C@@H](CCCN=C(N)N)C(=O)N[C@H]([C@H](C)C(=O)N[C@@H](CCCN=C(N)N)C(=O)N1)C(O)=O)C(O)=O)C)C1=CC=CC=C1 JIGDOBKZMULDHS-UUHBQKJESA-N 0.000 claims description 5
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- 108010080307 microcystin YR Proteins 0.000 claims description 5
- OWHASZQTEFAUJC-BKBILFGQSA-N microcystin-YR Natural products CO[C@@H](Cc1ccccc1)[C@@H](C)C=C(C)C=C[C@@H]2NC(=O)[C@H](CCCNC(=N)N)NC(=O)[C@@H](C)[C@@H](NC(=O)[C@H](Cc3ccc(O)cc3)NC(=O)[C@@H](C)NC(=O)C(=C)N(C)C(=O)CC[C@@H](NC(=O)[C@H]2C)C(=O)O)C(=O)O OWHASZQTEFAUJC-BKBILFGQSA-N 0.000 claims description 5
- SGNXVBOIDPPRJJ-PSASIEDQSA-N 1-[(1r,6r)-9-azabicyclo[4.2.1]non-4-en-5-yl]ethanone Chemical compound CC(=O)C1=CCC[C@@H]2CC[C@H]1N2 SGNXVBOIDPPRJJ-PSASIEDQSA-N 0.000 claims description 4
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- LHJPHMKIGRLKDR-VDPNAHCISA-N cylindrospermopsin zwitterion Chemical compound C1([C@H](O)[C@@H]2NC3=NC[C@@H]4[C@H]([C@H](C[C@H](C2)N43)OS(O)(=O)=O)C)=CC(=O)NC(=O)N1 LHJPHMKIGRLKDR-VDPNAHCISA-N 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 4
- RPQXVSUAYFXFJA-HGRQIUPRSA-N saxitoxin Chemical compound NC(=O)OC[C@@H]1N=C(N)N2CCC(O)(O)[C@@]22N=C(N)N[C@@H]12 RPQXVSUAYFXFJA-HGRQIUPRSA-N 0.000 claims description 4
- RPQXVSUAYFXFJA-UHFFFAOYSA-N saxitoxin hydrate Natural products NC(=O)OCC1N=C(N)N2CCC(O)(O)C22NC(N)=NC12 RPQXVSUAYFXFJA-UHFFFAOYSA-N 0.000 claims description 4
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- 238000011156 evaluation Methods 0.000 claims description 3
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- 108010065793 nodularin Proteins 0.000 description 3
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
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- -1 hepatotoxins Substances 0.000 description 2
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 2
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- 238000000746 purification Methods 0.000 description 2
- 235000010265 sodium sulphite Nutrition 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 235000003255 Carthamus tinctorius Nutrition 0.000 description 1
- 244000020518 Carthamus tinctorius Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000224466 Giardia Species 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
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- 238000005260 corrosion Methods 0.000 description 1
- 231100000599 cytotoxic agent Toxicity 0.000 description 1
- 239000002619 cytotoxin Substances 0.000 description 1
- 229940088679 drug related substance Drugs 0.000 description 1
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- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 231100000784 hepatotoxin Toxicity 0.000 description 1
- ARYKTOJCZLAFIS-UHFFFAOYSA-N hydrogen peroxide;ozone Chemical compound OO.[O-][O+]=O ARYKTOJCZLAFIS-UHFFFAOYSA-N 0.000 description 1
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- 238000001471 micro-filtration Methods 0.000 description 1
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Images
Classifications
-
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
-
- 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
- C02F2305/14—Additives which dissolves or releases substances when predefined environmental conditions are reached, e.g. pH or temperature
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Description
The present invention relates to a complex water treatment system, and more particularly, to a complex water treatment system for removing harmful substances (noxious substances) such as tastes (flavor), algae toxins, Peroxide-ultraviolet (UV-UV) process, and ultraviolet-chlorine (UV) process, and a method thereof.
As a water treatment method according to the prior art, sand filtration or chlorine disinfection method after coagulation sedimentation is commonly used to treat harmful substances in the raw water. For example, the harmful substance includes the taste-causing substance, the alga toxicity substance, and the medicinal substance, which cause 2-Methylisoborneol (2-Methylisoborneol) and a mold odor causing soil odor Geosmin, and the algal toxins include Microcystin-LR, Microcystin-RR, Microcystin-YR, Anatoxin-YR, wherein the medicinal substance is selected from the group consisting of carbamazepine, Iopromide, Caffeine and ibuprofen (hereinafter, referred to as " carbamazepine "), saffitin, safflower, Ibuprofen).
Microcystin-LR, Microcystin-RR, Microcystin-YR, Anatoxin-a, Saxitoxin, and the like are among the aforementioned harmful substances. , Cylindrospermopsin, Nodularin, etc. are known as cyanobacterial toxins. These toxic substances can cause serious health problems such as dermatotoxins, cytotoxins, hepatotoxins, and neurotoxins.
However, in the conventional water treatment method, various oxidation methods have been introduced because of the limitations in efficiently treating the above-mentioned harmful substances.
For example, in the advanced oxidation treatment process which is conventionally introduced according to the prior art, OH radicals and the like have the highest oxidizing power, so that the residual oxidizing agent is removed at the rear end and the activated carbon treatment Processes are often combined.
Particularly, processes for removing harmful substances using OH radicals include ozone-high
On the other hand, in the case of ultraviolet-hydrogen peroxide high-level oxidation technology, the amount of ultraviolet light absorbed by hydrogen peroxide
Furthermore, in the case of ultraviolet-chlorine high-level oxidation, when free chlorine reacts with ultraviolet light, it has a molar extinction coefficient and a quantum yield higher than that of hydrogen peroxide,
Therefore, in the case of introducing ultraviolet-based advanced oxidation technology, it is possible to maximize the OH radical to remove harmful substances in the influent water, and if residual oxidizing agent can be completely removed, addition of granular activated carbon required in the conventional water treatment system An advantage that the process is not necessary can be obtained.
The conventional ultraviolet-based advanced oxidation water treatment system according to the prior art maximizes OH radicals and uses a separate hydrogen peroxide to oxidize harmful substances in the incoming water. However, unreacted residual hydrogen peroxide is generated at this time, It is necessary to use a separate reducing agent or a new type of medicines, facilities and sites that are not used in conventional water treatment systems such as fixed granular activated charcoal. This increases the initial investment and operating costs, making it difficult to introduce a small- There is a problem.
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a two-stage ultraviolet oxidation apparatus in a conventional process for removing harmful substances such as hobby substances, avian toxins, It is possible to maximize the OH radicals according to the kind and concentration of the harmful substances in the influent raw water by the two-stage ultraviolet oxidation process in which the ultraviolet-hydrogen peroxide process and the ultraviolet-chlorine process are sequentially combined in order to remove harmful substances, The present invention also provides a complex water treatment system using the two-stage ultraviolet oxidation process combined with a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process, which can completely treat the remaining oxidizing agent.
As a means for achieving the above-mentioned technical object, a complex water treatment system using a two-stage ultraviolet oxidation process combining a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process according to the present invention can be used for a water treatment system, A water treatment system comprising filtration or membrane filtration and settlement paper, comprising: a first water quality measurement unit installed on the inflow water channel to measure water quality; A hobby-causing substance inflow determining unit for determining whether the hobby-inducing substance has been introduced into the influent raw water according to a result of the measurement by the first water quality measuring unit; A harmful substance type and concentration input unit for inputting the kind and concentration of the harmful substances in the inflowing raw water; A chemical injection amount model predictive control unit for variably controlling the hydrogen peroxide injection amount and the primary UV irradiation amount of the hydrogen peroxide-ultraviolet ray process, the chlorine injection amount of the chlorine-ultraviolet ray process, and the secondary ultraviolet irradiation amount according to the quantity of the influent source water and the concentration of the harmful substance; An apparatus for sequential combination of a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process for treating an influent source water on an influent source water line, the apparatus comprising: a hydrogen peroxide injection amount variably controlled through the drug injection amount model predictive control unit, a primary ultraviolet radiation dose, A two-stage ultraviolet oxidation reaction apparatus for treating toxic substances in the influent raw water according to a chlorine injection amount and a secondary ultraviolet ray irradiation amount which simultaneously improve the oxidizing ability; And a second water quality measuring unit installed on the treated water pipe to measure the treated water quality.
Here, the first water quality measurement unit may include chlorophyll-a, hydrogen ion index (
Here, the two-stage ultraviolet oxidation reaction apparatus is a tubular ultraviolet lamp, in which the intensity (irradiation amount) is variably controlled by the chemical injection amount model predictive control unit, and the ultraviolet ray (UV) A first ultraviolet ray reactor for irradiating the first ultraviolet ray; A hydrogen peroxide injection device installed at a front end of the first ultraviolet reactor and having a rapid injection agitator mounted on the inflow source water pipe for injecting hydrogen peroxide; A residual hydrogen peroxide concentration measuring unit which reacts in the first ultraviolet ray reactor and continuously measures the concentration of residual hydrogen peroxide; A tubular ultraviolet lamp, comprising: a second ultraviolet reactor, which is controlled on intensity (irradiation amount) by the drug injection amount model predictive control unit, and is installed on an inflow source water pipe and secondarily irradiates ultraviolet rays (UV); And a rapid injection agitator is provided at a front end of the second ultraviolet reactor to variably control the chlorine injection amount by the chemical injection amount model predictive control unit and to inject chlorine corresponding to the concentration of the residual hydrogen peroxide to remove the residual hydrogen peroxide And may include a mounted sodium hypochlorite injection device.
Here, the chlorine injected by the sodium hypochlorite injector removes the residual hydrogen peroxide, and the residual chlorine contributes to the oxidation reaction in the second ultraviolet reactor to treat harmful substances in the influent raw water.
Here, the two-stage ultraviolet oxidation apparatus may be installed on the inflow source water line at the downstream end of the sedimentation tank without the subsequent activated carbon adsorption process.
Here, the two-stage ultraviolet oxidation apparatus may be installed on the inflow source water line at the downstream end of the sand filtration or the membrane filtration in the absence of a subsequent activated carbon adsorption process.
2-Methylisoborneol (2-Methylisoborneol), which causes soil odor, and Geosmin (2-Methylisoborneol), which causes a mold odor, are contained in the harmful substance, the hobby ingredient, the avian toxic substance and the medicinal substance. Wherein the algal toxicant is selected from the group consisting of Microcystin-LR, Microcystin-RR, Microcystin-YR, Anatoxin-a, Wherein the medicament comprises at least one compound selected from the group consisting of carbamazepine, Iopromide, Caffeine and Ibuprofen, wherein the medicament comprises at least one compound selected from the group consisting of benzimidazole, saxitoxin, Cylindrospermopsin, and Nodularin, .
As another means for achieving the above technical object, a combined water treatment method using a two-stage ultraviolet oxidation process using a combination of a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process according to the present invention is characterized in that the water- A method for water treatment comprising a settling paper, a sand filtration or a membrane filtration, a cleansing paper and a two-stage ultraviolet oxidation reaction apparatus, comprising the steps of: a) determining whether or not the influent raw water is inflowed with the hobby- b) inputting the kind and concentration of the harmful substance to be removed; c) calculating the target hydrogen peroxide injection amount and the primary ultraviolet radiation dose for the target harmful substance by the drug injection amount model predictive control unit; d) injecting hydrogen peroxide into a front end of the first ultraviolet reactor of the two-stage ultraviolet oxidation apparatus; e) primary ultraviolet ray treatment to remove harmful substances in the raw water from the first ultraviolet ray reactor; f) measuring residual hydrogen peroxide concentration with respect to the input ultrapure water; g) determining the target chlorine injection amount and the secondary ultraviolet radiation amount in accordance with the residual hydrogen peroxide concentration, by the drug injection amount model predictive control unit; h) injecting chlorine into the front end of the second ultraviolet reactor of the two-stage ultraviolet oxidation apparatus; And i) secondary UV treatment to remove toxic substances in the incoming water from the second ultraviolet reactor.
The combined water treatment method using the two-stage ultraviolet oxidation process combining the hydrogen peroxide-ultraviolet process and the chlorine-ultraviolet process according to the present invention may include the steps of: j) calculating and calculating a toxic substance removal rate of chlorine- Evaluating; And k) a step of variably controlling the secondary ultraviolet radiation dose and the chlorine injection dose according to the target value / evaluation value by the drug injection amount model predictive control unit.
According to the present invention, in order to remove harmful substances such as hobby substances, avian toxic substances, medicinal substances and the like, a conventional two-stage ultraviolet oxidation reaction apparatus is additionally provided on the inflow source water pipe, and ultraviolet-hydrogen peroxide And ultraviolet-chlorine process, the OH radical is maximized according to the type and concentration of the harmful substances in the incoming water to remove the harmful substances, and at the same time, the remaining oxidizing agent can be completely treated , Thus eliminating the need for subsequent adsorption processes such as the conventional activated carbon process.
1 is a connection diagram of a real-time monitoring device for 2-MIB, which is a taste odor inducing substance in a water source flowing into a water treatment system.
FIG. 2 is a block diagram of a real-time taste-odor inducing substance monitoring and controlling apparatus for water treatment
FIG. 3 is a block diagram of a complex water treatment system using a two-stage ultraviolet oxidation process combining a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process according to an embodiment of the present invention.
4 is a specific configuration diagram of a complex water treatment system using a two-stage ultraviolet oxidation process combining a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process according to the first embodiment of the present invention.
FIG. 5 is a specific configuration diagram of a complex water treatment system using a two-stage ultraviolet oxidation process combining a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process according to a second embodiment of the present invention.
FIG. 6 is a flowchart of a combined water treatment method using a two-stage ultraviolet oxidation process combining a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process according to an embodiment of the present invention.
FIG. 7 is a graph showing a comparison of removal rates of harmful substances as a result of applying a complex water treatment system using a two-stage ultraviolet oxidation process according to an embodiment of the present invention.
FIG. 8 is a graph illustrating removal rates of ibuprofen according to chlorine injection amount and ultraviolet ray intensity as a result of applying a complex water treatment system using a two-stage ultraviolet oxidation process according to an embodiment of the present invention.
FIG. 9 is a graph showing removal concentrations of the contaminants introduced at each step as a result of applying a complex water treatment system using a two-stage ultraviolet highway oxidation process according to an embodiment of the present invention.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.
Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. Also, the term "part" or the like, as described in the specification, means a unit for processing at least one function or operation, and may be implemented by hardware, software, or a combination of hardware and software.
First, the Korean Patent No. 10-883035, which is patented by the applicant of the present invention described above, discloses an invention entitled " Device and method for real-time monitoring of taste odor inducing substance (2-MIB) Korean Patent No. 10-1253251 discloses an invention entitled " A device for monitoring and controlling a real-time taste-odor inducing substance for purifying water and its method ".
Specifically, "a device and a method for real-time monitoring of a taste odor inducing substance (2-MIB) in a source of inflow water from a water purification plant" disclosed in Korean Patent No. 10-883035 will be described with reference to FIG.
1 is a connection diagram of a real-time monitoring device for 2-MIB, which is a taste odor inducing substance in a water source flowing into a water treatment system.
1, a real-time monitoring apparatus for 2-MIB, which is a taste odor inducing substance in a water source flowing into a water treatment system, includes an injection station 1, a
In the case of a real-time monitoring device of 2-MIB, which is a taste-inducing substance in the water source flowing into the above-described water treatment system, the real-time monitoring device and method of 2-MIB, which is a taste odor inducing substance, And it is possible to quantitatively determine whether or not the taste odor is caused by the raw water and the final treated water of the water treatment system when applied in the field.
A "real-time taste-odor inducing substance monitoring and controlling apparatus and method for water treatment" disclosed in Korean Patent No. 10-1253251 will be described with reference to FIG.
2 is a block diagram of a real-time taste-inducing substance monitoring and controlling apparatus for water treatment
Referring to FIG. 2, a real-time taste-odor-inducing substance monitoring and control device for purifying water is characterized in that a taste odor inducing substance (Geosmin) and 2-MIB (EN) An apparatus for controlling a chemical injection amount of an advanced oxidation treatment process using a radical generation index in real time. The apparatus includes an inlet water storage facility (21), an inflow water pipe (22), a flow meter (23) 24, a high oxidation
In the case of the above-mentioned real-time control system for the taste-odor-inducing substance for the purification of the water, in the water treatment process for introducing the high-level oxidation process to remove the taste-causing substance, In addition, it is possible to prevent the chemicals from being injected in an excessive amount or a small amount by strengthening the oxidation treatment in the event of an emergency, and furthermore, by using the electronic nose smell sensor and the radical generation index, It is possible to save drug dosing.
Hereinafter, a complex water treatment system and a method thereof using a two-stage ultraviolet oxidation process combining a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process according to an embodiment of the present invention will be described with reference to FIGS. 3 to 8 do.
[Complex water treatment system using two-stage ultraviolet oxidation process]
FIG. 3 is a block diagram of a complex water treatment system using a two-stage ultraviolet oxidation process combining a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process according to an embodiment of the present invention. FIG. 5 is a schematic view of a complex water treatment system using a two-stage ultraviolet oxidation process using a combination of a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process. FIG. 5 is a schematic diagram of a hydrogen peroxide-ultraviolet process and a chlorine- Fig. 2 is a specific configuration diagram of a complex water treatment system using a two-stage ultraviolet oxidation process combined with a two-stage ultraviolet oxidation process.
3 to 5, a complex
2-Methylisoborneol (2-Methylisoborneol), which causes soil odor, and Geosmin (2-Methylisoborneol), which causes a mold odor, are contained in the harmful substance, Wherein the algal toxicant is selected from the group consisting of Microcystin-LR, Microcystin-RR, Microcystin-YR, Anatoxin-a, Wherein the medicament comprises at least one compound selected from the group consisting of carbamazepine, Iopromide, Caffeine and Ibuprofen, wherein the medicament comprises at least one compound selected from the group consisting of benzimidazole, saxitoxin, Cylindrospermopsin, and Nodularin, .
The first water
The hobby-inducing material
The harmful substance type and
The drug injection amount model
The two-stage
3, the two-stage
The first
The hydrogen
The residual hydrogen peroxide
The second
The
4 and 5, the
In addition, the second water
In the case of the complex
[Complex water treatment method using two-stage ultraviolet oxidation process]
FIG. 6 is a flowchart of a combined water treatment method using a two-stage ultraviolet oxidation process combining a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process according to an embodiment of the present invention.
6, a combined water treatment method using a two-stage ultraviolet oxidation process using a combination of a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process according to an embodiment of the present invention includes a settling tank, a blend-aggregating
Next, the types and concentrations of the harmful substances to be removed are input (S120).
Next, the drug injection amount model
Next, hydrogen peroxide is injected into the front end of the first
In addition, the two-stage
Next, the ultraviolet ray treatment is firstly performed to remove harmful substances in the raw water from the first ultraviolet ray reactor 171 (S150).
Next, the concentration of residual hydrogen peroxide is measured with respect to the primary ultraviolet treated raw water (S160).
Next, the drug injection amount model
Next, chlorine is injected into the front end of the second
Next, the second
Next, the drug injection amount model
Next, the drug injection amount model
Meanwhile, FIG. 7 is a graph showing a comparison of removal rates of harmful substances as a result of applying a complex water treatment system using a two-stage ultraviolet oxidation process according to an embodiment of the present invention, wherein ultraviolet alone treatment, ultraviolet-hydrogen peroxide, (Geosmin), Microcystin-LR (representative algae toxin), Ibuprofen and Iopromide (representative medicinal substances), and the like. And the treatment efficiency is compared.
As shown in FIG. 7, in a complex water treatment system using a two-stage ultraviolet oxidation process according to an embodiment of the present invention and a conventional ultraviolet water treatment system, ultraviolet-hydrogen peroxide water treatment system, and chlorine-ultraviolet water treatment system, Odor) and trace organic pollutants. For the conventional ultraviolet single water treatment system or the hydrogen peroxide-ultraviolet water treatment system, the chlorine-ultraviolet water treatment system and the two-stage ultraviolet oxidation process according to the embodiment of the present invention, this hobby inducing substance Geosmin and the representative algal toxic substance When injecting 2 mg / L of hydrogen peroxide and chlorine at a constant ultraviolet intensity for the substances to be removed such as microcystin-LR (ibuprofen) and iopromide (representative drugs) The respective removal rates were compared. As can be seen from the above results, it was confirmed that the complex water treatment system using the two-stage ultraviolet oxidation process according to the embodiment of the present invention secures excellent removal efficiency.
FIG. 8 is a graph illustrating the removal rate of ibuprofen according to the chlorine injection amount and ultraviolet light intensity as a result of applying a complex water treatment system using a two-stage ultraviolet oxidation process according to an embodiment of the present invention. Fig. 3 is a graph showing the removal efficiency of ibuprofen according to the change in chlorine injection amount.
As shown in FIG. 8, in a complex water treatment system using a two-stage ultraviolet oxidation process according to an embodiment of the present invention, a removal experiment using ibuprofen (IBF), which is a representative drug substance, And it was confirmed that the removal efficiency can be increased sharply.
FIG. 9 is a graph showing the concentration of each pollutant to be removed at each step as a result of applying a complex water treatment system using a two-stage ultraviolet light oxidation process according to an embodiment of the present invention. In the inflow water entering the ultraviolet process, about 100 ng / L of trace contaminants, the concentration is reduced step by step according to the embodiment of the present invention, which consists of a first stage ultraviolet / hydrogen peroxide and a second stage ultraviolet / chlorine process.
Specifically, 4 mg / L of hydrogen peroxide was injected in the 1-stage ultraviolet process and 2 mg / L of chlorine was injected in the 2-stage ultraviolet process to control the removal efficiency and the residual oxidizer of the target substance. At this time, the removal efficiency of each substance is different, but when the final two stage ultraviolet / chlorine process is completed, the concentration of all trace contaminants can be lowered to 20 ng / L or less. Accordingly, the injected hydrogen peroxide is completely removed by chlorine before the rear ultraviolet ray reaction, and the injected chlorine also induces a secondary radical reaction by some ultraviolet rays to further remove the target contaminants and adjust the target residual chlorine concentration have.
As a result, according to the embodiment of the present invention, an ultraviolet ray reactor including a tubular ultraviolet lamp having a two-stage structure is provided at the downstream end of the precipitation process or at the downstream end of the filtration process, A hydrogen
It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.
The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.
100: Complex water treatment system
110: first water quality measuring unit
120: This hobby-inducing substance inflow determination unit
130: Hazardous substance type and concentration input unit
140: drug injection amount model predictive control unit
150: second water quality measurement unit
160: coagulant injection unit
170: Two-stage ultraviolet oxidation reactor
171: First Ultraviolet Reactor
172: hydrogen peroxide injection device
173: residual hydrogen peroxide concentration measuring unit
174: Second ultraviolet ray reactor
175: Sodium hypochlorite injection unit
210: Admixture - Agglomeration
220: Settling basin
230: sand filtration or membrane filtration
240: Fixed spot
Claims (14)
A first water quality measurement unit 110 installed on the inflow water channel to measure water quality;
The hobby-inducing material inflow determining unit 120 determines whether the hobby-inducing material has been introduced into the inflowing water according to the result of the measurement by the first water quality measuring unit 110.
A harmful substance type and concentration input unit 130 for inputting the kind and concentration of the harmful substances in the influent source water;
A chemical injection amount model predictive control unit 140 for variably controlling the amount of hydrogen peroxide injected in the hydrogen peroxide-ultraviolet ray process and the primary UV irradiation amount, the chlorine injection amount in the chlorine-ultraviolet ray process, and the secondary UV irradiation amount according to the quantity of the influent source water and the concentration of the harmful substance );
An apparatus for sequentially performing a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process for treating an influent source water on an influent source water line, the device comprising: a hydrogen peroxide injection amount variably controlled through the drug injection amount model predictive control unit 140; A two-stage ultraviolet oxidation apparatus 170 for treating toxic substances in the inflow water according to a chlorine injection amount and a secondary ultraviolet radiation amount for improving the oxidizing ability while removing residual hydrogen peroxide; And a second water quality measuring unit (150) installed on the treated water pipe to measure the quality of the treated water. The combined water treatment system uses a two-stage ultraviolet oxidation process combined with a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process.
The first water quality measuring unit 110 measures chlorophyll-a, hydrogen ion index (
A tubular ultraviolet lamp comprising: a first ultraviolet reactor (171) for irradiating ultraviolet rays (UV), which is variably controlled in intensity (irradiation amount) by the drug injection amount model predictive control unit (140) );
The hydrogen peroxide injection device is provided at a front end of the first ultraviolet ray reactor 171 and is controlled by the drug injection amount model predictive control unit 140 so that hydrogen peroxide is injected onto the inflow source water pipe. (172);
A residual hydrogen peroxide concentration measuring unit 173 which reacts in the first ultraviolet ray reactor 171 and continuously measures the concentration of residual hydrogen peroxide;
The tubular ultraviolet lamp includes a second ultraviolet reactor 174 for irradiating ultraviolet rays (UV), which is variably controlled in strength (irradiation amount) by the drug injection amount model predictive control unit 140, ); And
The chlorine injection amount is variably controlled by the drug injection amount model predictive control unit 140 and chlorine corresponding to the concentration of the residual hydrogen peroxide is injected to remove the residual hydrogen peroxide, A combined water treatment system using a two-stage ultraviolet oxidation process combining a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process, including a sodium hypochlorite injection device 175 equipped with a rapid-injection agitator.
The chlorine injected by the sodium hypochlorite injector 175 removes the residual hydrogen peroxide and the residual chlorine contributes to the oxidation reaction in the second ultraviolet reactor 174 to treat the harmful substances in the incoming source water A complex water treatment system using a two-stage ultraviolet oxidation process combining a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process.
Wherein the two-stage ultraviolet oxidation apparatus (170) is installed on the inflow source water line at the downstream end of the sedimentation tank (220) in a state where the subsequent activated carbon adsorption process is not carried out, in combination with the hydrogen peroxide-ultraviolet ray process and the chlorine- Complex water treatment system using two stage ultraviolet oxidation process.
Wherein the two-stage ultraviolet oxidation apparatus (170) is installed on the inflow source water line at the downstream end of the sand filtration or membrane filtration (230) without the subsequent activated carbon adsorption process. The hydrogen peroxide- A combined water treatment system using a two - stage ultraviolet oxidation process combined with a process.
2-Methylisoborneol (2-Methylisoborneol), which induces soil odor, and Geosmin, which causes a mold odor, are contained in the harmful substance, including the hobby-inducing substance, the avirulent toxic substance and the medicinal substance. And the algal toxicants are selected from the group consisting of Microcystin-LR, Microcystin-RR, Microcystin-YR, Anatoxin-a, Saxitoxin and Cylindrospermopsin, wherein the medicinal substance is selected from the group consisting of a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process, characterized in that it comprises iopromide, caffeine and ibuprofen, A combined water treatment system using a two - stage ultraviolet oxidation process combined with a process.
a) measuring the presence or absence of the introduction of the hobby-inducing substance into the influent water;
b) inputting the kind and concentration of the harmful substance to be removed;
c) calculating the target hydrogen peroxide injection amount and the primary ultraviolet radiation dose for the target harmful substance by the drug injection amount model predictive control unit 140;
d) injecting hydrogen peroxide into the front end of the first UV reactor (171) of the two-stage ultraviolet oxidation apparatus (170);
e) primary ultraviolet treatment to remove harmful substances in the raw water from the first ultraviolet reactor (171);
f) measuring residual hydrogen peroxide concentration with respect to the input ultrapure water;
g) determining the target chlorine injection amount and the secondary ultraviolet radiation amount in response to the residual hydrogen peroxide concentration, by the drug injection amount model predictive control unit 140;
h) injecting chlorine into the front end of the second ultraviolet reactor (174) of the two-stage ultraviolet oxidation apparatus (170); And
i) secondary UV treatment to remove harmful substances in the inflowing water from the second ultraviolet reactor (174)
And a chlorine-ultraviolet process, wherein the hydrogen peroxide-ultraviolet process and the chlorine-ultraviolet process are combined.
In step a), chlorophyll-a, hydrogen ion index (
A tubular ultraviolet lamp comprising: a first ultraviolet reactor (171) for irradiating ultraviolet rays (UV), which is variably controlled in intensity (irradiation amount) by the drug injection amount model predictive control unit (140) );
The hydrogen peroxide injection device is provided at a front end of the first ultraviolet ray reactor 171 and is controlled by the drug injection amount model predictive control unit 140 so that hydrogen peroxide is injected onto the inflow source water pipe. (172);
A residual hydrogen peroxide concentration measuring unit 173 which reacts in the first ultraviolet ray reactor 171 and continuously measures the concentration of residual hydrogen peroxide;
The tubular ultraviolet lamp includes a second ultraviolet reactor 174 for irradiating ultraviolet rays (UV), which is variably controlled in strength (irradiation amount) by the drug injection amount model predictive control unit 140, ); And
The chlorine injection amount is variably controlled by the drug injection amount model predictive control unit 140 and chlorine corresponding to the concentration of the residual hydrogen peroxide is injected to remove the residual hydrogen peroxide, A sodium hypochlorite injection device 175 equipped with a rapid-
And a chlorine-ultraviolet process, wherein the hydrogen peroxide-ultraviolet process and the chlorine-ultraviolet process are combined.
The chlorine injected by the sodium hypochlorite injector 175 removes the residual hydrogen peroxide and the residual chlorine contributes to the oxidation reaction in the second ultraviolet reactor 174 to treat the harmful substances in the incoming source water A complex water treatment method using a two-stage ultraviolet oxidation process combining a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process.
Wherein the two-stage ultraviolet oxidation apparatus (170) is installed on the inflow source water line at the downstream end of the sedimentation tank (220) in a state where the subsequent activated carbon adsorption process is not carried out, in combination with the hydrogen peroxide-ultraviolet ray process and the chlorine- A composite water treatment method using a two-stage ultraviolet oxidation process.
Wherein the two-stage ultraviolet oxidation apparatus (170) is installed on the inflow source water line at the downstream end of the sand filtration or membrane filtration (230) without the subsequent activated carbon adsorption process. The hydrogen peroxide- A combined water treatment method using a two-stage ultraviolet oxidation process combined with a process.
j) calculating and evaluating a harmful substance removal rate of chlorine-ultraviolet rays by the drug injection amount model predictive control unit 140; And
k) the drug injection amount model predictive control unit 140 variably controls the secondary ultraviolet ray irradiation amount and the chlorine injection amount in accordance with the target value / evaluation value
And further comprising a hydrogen peroxide-ultraviolet process and a chlorine-ultraviolet process, wherein the hydrogen peroxide-ultraviolet process and the chlorine-ultraviolet process are combined.
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