CN111362486A - Device and method for quickly disinfecting and removing disinfection byproducts - Google Patents
Device and method for quickly disinfecting and removing disinfection byproducts Download PDFInfo
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- CN111362486A CN111362486A CN202010273352.XA CN202010273352A CN111362486A CN 111362486 A CN111362486 A CN 111362486A CN 202010273352 A CN202010273352 A CN 202010273352A CN 111362486 A CN111362486 A CN 111362486A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
- C02F1/325—Irradiation devices or lamp constructions
-
- 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
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
- C02F2201/322—Lamp arrangement
- C02F2201/3223—Single elongated lamp located on the central axis of a turbular reactor
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
- C02F2201/322—Lamp arrangement
- C02F2201/3228—Units having reflectors, e.g. coatings, baffles, plates, mirrors
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/78—Details relating to ozone treatment devices
- C02F2201/782—Ozone generators
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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
- C02F7/00—Aeration of stretches of water
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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)
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Abstract
The invention discloses a device for quickly disinfecting and removing disinfection byproducts, which comprises: the aeration tank is provided with an inflow port and an aeration tank outlet and comprises a tank body, the upper end surface of the tank body is provided with a tank cover, the tank cover is provided with a ventilation port, and the bottom of the tank body is provided with an aeration head; the photoreactor is internally provided with a photoreactor inlet and a flow outlet, the photoreactor inlet is communicated with an aeration tank outlet pipeline, and ultraviolet light is generated in the photoreactor. In addition, the invention also discloses a method for quickly disinfecting and removing disinfection byproducts by adopting the device, which comprises the following steps: the liquid to be treated enters an aeration tank from the inflow port for aeration; the aerated solution to be treated enters a photoreactor and is photolyzed by the photoreactor to obtain a sterilized solution; the sterilized liquid flows out from the outflow port; wherein the liquid to be treated is drinking water. The device can realize quick disinfection, and the disinfection effect is splendid to can carry out the synchronous disinfection accessory substance of getting rid of.
Description
Technical Field
The invention relates to the field of water treatment, in particular to a disinfection device and a disinfection method.
Background
Disinfection is an essential step in the drinking water treatment process. The widespread use of disinfection processes can effectively inhibit the spread of many infectious diseases. However, the reaction of the disinfectant used in the disinfection process with natural organic substances in the drinking water can result in the generation of disinfection by-products (DBPs for short).
Since trichloromethane was first found in disinfected drinking water in 1973, more than 800 kinds of DBPs such as trihalomethane (abbreviated as THMs), haloacetic acids (abbreviated as HAAs), haloacetonitrile (abbreviated as HANs), haloacetaldehyde (abbreviated as HALS) and the like have been detected and identified. DBPs have a series of negative effects on human health, such as carcinogenesis, abortion, and chronic toxicity to nerves. Therefore, more and more countries and regions put the content of DBPs, such as HAAs, THMs, into the drinking water quality standard, thereby securing the safety of drinking water.
In the prior art, the control of DBPs can be divided into the following three types according to the action position: front end control, process control, and end control. Wherein the front-end control means removing precursor substances that may react with a disinfectant to generate DBPs before sterilization, the process control means reducing the generation of DBPs by optimizing sterilization conditions, and the end-end control means reducing the concentration of DBPs by means such as chemical reduction and oxidation after sterilization. In order to ensure the biological stability of drinking water in a pipe network, the leaving water can ensure a certain residual chlorine amount, and the residual chlorine can continuously react with organic matters in the water to generate DBPs. Thus, the end control is the last line of defense to control DBPs.
Currently, common end-point control methods include chemical oxidation, chemical reduction, and physical adsorption. Wherein a chemical reduction process such as zero-valent iron, sulfite reduction process, or a chemical oxidation process such as UV/H2O2In the case of the method (1), a reaction reagent is required to be added. In addition, the above-mentioned reduction method and chemical oxidation method require a certain reaction time and are difficult to continue, and thus cannot be widely used. When physical adsorption is adopted, for example, physical adsorption is carried out by using activated carbon, the filter columns need to be replaced periodically, and adsorption is carried outThe effect is not good, and therefore, it is not suitable for end control.
In addition, although the factory water of a drinking water plant contains a certain amount of residual chlorine to prevent the proliferation of pathogenic microorganisms, a part of the microorganisms continue to proliferate in the pipe network as the chlorine gas decays. Especially in areas with complex pipe networks, it is particularly important to perform secondary disinfection of drinking water at the end. Therefore, how to solve the end control of the drinking water, especially how to realize the end control to ensure the biological safety of the drinking water without adding additional chemical reagents, becomes a problem to be urgently expected to be solved.
Based on this, it is desirable to obtain an apparatus for rapidly sterilizing and removing a sterilization by-product, which has a short reaction time, occupies a small space, has a high space utilization rate, and has a good sterilization effect.
Disclosure of Invention
One of the objectives of the present invention is to provide a device for rapidly sterilizing and removing byproducts of sterilization, which is suitable for end control of drinking water, and through which drinking water can be blown off by an aeration tank and the drinking water can be photolyzed by a photoreactor, thereby effectively achieving the effects of rapidly sterilizing and removing byproducts of sterilization under the dual actions of blowing off and photolysis. In addition, the device has short reaction time, small occupied space, high space utilization rate and good disinfection effect. In addition, the device also has positive significance for guaranteeing the biological safety of drinking water and reducing the health risk brought by disinfection byproducts.
In order to achieve the above object, the present invention provides an apparatus for rapidly sterilizing and removing a sterilization by-product, the apparatus comprising: the aeration tank is provided with an inflow port and an aeration tank outlet and comprises a tank body, the upper end surface of the tank body is provided with a tank cover, the tank cover is provided with a ventilation port, and the bottom of the tank body is provided with an aeration head;
the reactor comprises a photoreactor, wherein the photoreactor is internally provided with a photoreactor inlet and a flow outlet, the photoreactor inlet is communicated with an aeration tank outlet pipeline, and ultraviolet light is generated in the photoreactor.
In the apparatus for rapid disinfection and removal of disinfection byproducts according to the present invention, the fluid to be treated enters the aeration tank through the inlet of the apparatus, and is aerated in the aeration tank, and a portion of volatile substances, such as THMs, in DBPs can be removed by aeration in the aeration tank. Moreover, the odor substances in the liquid to be treated can be removed by aeration, and when the liquid to be treated is drinking water, the odor substances can be removed to improve the taste of the drinking water. In addition, the aeration can increase the dissolved oxygen in the water, and the increased dissolved oxygen can generate ozone and free radicals in a subsequent photoreactor due to the action of ultraviolet light, so that the disinfection effect and the degradation rate of DBPs are improved.
The liquid to be treated after aeration flows out from an outlet of the aeration tank, flows into the photoreactor from an inlet of the photoreactor through a pipeline between the photoreactor and the aeration tank, and is subjected to UV disinfection in the photoreactor through ultraviolet light, namely, photolysis in the photoreactor.
Therefore, the device can be used for carrying out secondary disinfection on the liquid to be treated, the disinfection process can be carried out by blowing off through the aeration tank and can also be carried out by photolysis through the photoreactor, and the device can be continuously operated by reaction when being used for disinfection, and can be used immediately after being opened, so that the occupied space of the device is greatly saved, and the space occupancy rate is improved.
In the apparatus of the present invention, the aeration tank is subjected to blast aeration and/or mechanical aeration.
Further, in the device of the invention, the device comprises a water pump, and a valve is arranged on a pipeline communicated with the water pump.
Further, in the apparatus of the present invention, the photo reactor includes a housing, a UV lamp disposed in the housing, and a photo reaction module covering a tube body of the UV lamp, wherein the UV lamp generates ultraviolet light, and an inlet and an outlet of the photo reactor are disposed on the photo reaction module.
Furthermore, in the device of the present invention, the photoreaction module includes a first tube section, a second tube section, and a capillary membrane connected to the first tube section and the second tube section through an adapter, the capillary membrane is composed of a plurality of capillaries arranged side by side, the first tube section is provided with a photoreactor inlet, and the second tube section is provided with a flow outlet.
In the technical scheme, the adoption of the capillary tube film can improve the photolysis efficiency of the liquid to be treated in the photoreactor, accelerate the reaction speed and reduce the reaction time, and the capillary tube film formed by a plurality of capillary tubes side by side can be beneficial to the continuous operation of the photoreactor.
In some preferred embodiments, the capillary film may be made of a high polymer material with good light transmission properties, such as: polymethyl methacrylate, polyperfluoro compounds and polycarbonates.
In the embodiments of the present invention, the number of the capillaries may be set to 5 to 1000, and the specific number may be adjusted by a person skilled in the art according to the specific situation of each embodiment.
Further, in the device of the present invention, the diameter of the capillary tube is 10 μm to 2 mm.
Further, in the device of the present invention, the capillary is made of at least one of the following materials: polymethyl methacrylate, polyperfluoro compounds and polycarbonates.
Further, in the device of the present invention, the UV lamp tube is a low-pressure UV lamp, and the main wavelength is 160-280 nm.
It should be noted that in the device of the present invention, the UV lamp tube preferably uses a lamp tube with power less than or equal to 320W, and in some more preferred embodiments, the power of the UV lamp tube may be less than or equal to 200W.
It should also be noted that, the photo reactor is used for photolysis of drinking water, and under the synergistic effect of stripping and photolysis, the effects of rapid disinfection and removal of disinfection byproducts can be effectively realized, thus having positive significance for guaranteeing the biological safety of drinking water and reducing the health risk caused by disinfection byproducts.
Specifically, in some embodiments, the reaction formula for photolysis of dissolved oxygen is as follows:
from the above formula, it can be seen that the use of the low-pressure UV lamp can promote the photolysis of the dissolved oxygen to generate more OH & free radicals by cooperating with the aeration tank, so as to improve the effects of disinfection and removal of disinfection by-products.
Further, in the device of the present invention, the housing includes a housing and a base connected to the housing, the UV lamp tube is detachably connected to the base, and a light reflective coating layer is coated on an inner wall of the housing, the reflective coating layer being a coating having a reflectance greater than 50%.
Further, in the device of the present invention, the light reflection coating layer is formed by coating mirror aluminum or sand-blasting aluminum oxide on the inner wall of the housing.
In the above scheme, in order to improve the light energy utilization rate, a light reflection coating layer can be coated on the inner wall of the shell so as to reflect and utilize ultraviolet light generated by the UV lamp tube, improve the light energy utilization rate and further improve the reaction rate in the photoreactor.
Further, in the apparatus of the present invention, the liquid entering the photoreactor has at least one of the following parameters:
the pH value of the liquid is 6.5-8;
the average flow velocity of the liquid is 0.5-2 m/s;
the residence time of the liquid is 5-60 s.
Further, it is another object of the present invention to provide a method for rapidly sterilizing and removing a sterilization by-product using the above-mentioned apparatus, by which the sterilization and removal of the sterilization by-product can be rapidly and efficiently performed.
In order to achieve the above object, the present invention also provides a method for rapid disinfection and removal of disinfection byproducts using the above apparatus, comprising the steps of:
the liquid to be treated enters an aeration tank from the inflow port for aeration;
the aerated solution to be treated enters a photoreactor and is photolyzed by the photoreactor to obtain a sterilized solution;
the sterilized liquid flows out from the outflow port;
wherein the liquid to be treated is drinking water.
It should be noted that, in the technical solution of the present invention, after the method of the present invention is adopted to perform rapid disinfection and remove disinfection byproducts, the concentration of THMs in the disinfected liquid is less than or equal to 80 μ g/L, and the number of escherichia coli in the disinfected liquid is less than or equal to 100 CFU/mL.
Compared with the prior art, the device and the method for quickly disinfecting and removing the disinfection byproducts have the advantages and beneficial effects as follows:
the device is suitable for carrying out end control on drinking water, the drinking water can be blown off by the aeration tank through the device, the drinking water is photolyzed by the photoreactor, the effects of quickly disinfecting and removing disinfection byproducts can be effectively realized under the synergistic action of blowing off and photolysis, and the device has positive significance for ensuring the biological safety of the drinking water and reducing the health risk brought by the disinfection byproducts.
In addition, the device has the advantages of short reaction time, small occupied space, high space utilization rate and good disinfection effect.
In addition, the device of the invention does not need to add chemical agents additionally, and is simple to operate and maintain.
In some embodiments, the capillary film with good light transmission performance is adopted, and the light reflection coating layer is arranged, so that the device has high light energy utilization rate and high photochemical reaction rate.
In some embodiments, the capillary thin film formed by a plurality of capillaries arranged side by side can make the reaction time of the device easy to control and the heat dissipation area large. Therefore, the technical scheme of the invention does not need to additionally arrange a condensing device, and has positive significance for improving the space utilization rate and reducing the occupied space of the device.
In addition, the method of the invention also has the advantages and beneficial effects.
Drawings
Fig. 1 is a schematic diagram of the apparatus for rapid disinfection and removal of disinfection byproducts according to some embodiments of the present invention.
Fig. 2 schematically illustrates the structure of a photoreactor in some embodiments of the apparatus for rapid disinfection and removal of disinfection byproducts of the present invention.
Fig. 3 schematically shows the sterilization effect when the apparatus for rapid sterilization and removal of sterilization byproducts of example 2 is used for sterilization.
Detailed Description
The apparatus and method for rapid disinfection and removal of disinfection byproducts of the present invention will be further explained and illustrated with reference to the drawings and the detailed description of the present application, which, however, should not be construed as unduly limiting the technical scope of the present invention.
Fig. 1 is a schematic diagram of the apparatus for rapid disinfection and removal of disinfection byproducts according to some embodiments of the present invention.
As shown in fig. 1, in the present embodiment, an apparatus for rapidly sterilizing and removing a byproduct of sterilization includes an aeration tank 1 and a photoreactor 2, wherein the aeration tank 1 has an inlet 41 and an aeration tank outlet 42. In addition, in the present embodiment, the aeration tank 1 includes a tank body 11, a tank cover 12 is provided on an upper end surface of the tank body 11, and the tank cover 12 is provided with a ventilation opening to facilitate the gas to enter and exit.
And the bottom of the tank body 11 is provided with an aeration head 13, and the aeration head 13 carries out aeration treatment on the liquid to be treated in the aeration tank 1.
In the present embodiment, the aeration tank 1 may be aerated by blowing air. Of course, in some other embodiments, the aeration tank 1 may be aerated by mechanical aeration, or by a combination of blast aeration and mechanical aeration.
As can be seen with further reference to fig. 1, in the present embodiment, the photoreactor 2 has a photoreactor inlet 43 and an effluent outlet 44, and the photoreactor inlet 43 is communicated with the aeration tank outlet 42 through a pipeline.
And as can be seen from fig. 1, in the present embodiment, a pump 31 and a valve 32 are provided on the pipeline between the photoreactor inlet 43 and the aeration tank outlet 42 to facilitate control of the fluid flow rate of the liquid to be treated in the pipeline.
Fig. 2 schematically illustrates the structure of a photoreactor in some embodiments of the apparatus for rapid disinfection and removal of disinfection byproducts of the present invention.
As shown in fig. 2 and referring to fig. 1 as necessary, in the present embodiment, the photo reactor 2 includes a housing, a UV lamp 22 disposed in the housing, and a photo reaction module 23 covering a tube body of the UV lamp 22, wherein the housing includes an outer shell 211 and a base 212 connected to the outer shell 211, and the outer shell 211 may be fixedly connected to the base 212. However, in some embodiments, the housing 211 and the base 212 may be screwed or detachably connected to each other for easy assembly and disassembly. The UV lamp 21 and the base 212 may be detachably connected, for example, the base 212 is provided with a connection port, and the UV lamp 21 is provided with a corresponding connection protruding end, which can be inserted into the corresponding connection port to connect the UV lamp and the base 212.
In addition, in order to improve the light energy utilization efficiency of the apparatus, in the present embodiment, the inner wall of the housing 211 is coated with a light reflective coating layer. The light reflection coating layer can adopt a coating with the reflectivity of more than 50 percent, such as: the inner wall of the housing 211 is coated with mirror aluminum or sand-blasted aluminum oxide to obtain the desired light reflecting coating layer.
Referring to fig. 2, in the present embodiment, the photoreaction module 23 includes a first pipe segment 231, a second pipe segment (not shown in the figure, but in the present embodiment, the first pipe segment 231 is connected to one end of the capillary membrane 233 along the axial direction of the capillary membrane 233, and the second pipe segment is connected to the other end of the capillary membrane 233 along the axial direction of the capillary membrane 233, that is, the first pipe segment 231 and the second pipe segment are symmetrically disposed at two sides of the capillary membrane 233), and the capillary membrane 233 is connected to the first pipe segment 231 and the second pipe segment through an adapter 234, the capillary membrane 233 is composed of a plurality of capillary tubes 2330 arranged side by side, the pipe of the first pipe segment has the photoreactor inlet 43, and the pipe of the second pipe segment has the outflow port 44.
In the present application, the diameter of the capillary 2330 may be 10 μm to 2mm, the number of capillaries is 5 to 1000, and the specific diameter and number of capillaries may be set by those skilled in the art according to the specific circumstances of the embodiments.
In addition, in order to increase the reaction rate of the liquid to be treated flowing through the capillary 2330, the capillary 2330 may be made of a material having a good light transmittance, and the material may be at least one of the following materials: polymethyl methacrylate, polyperfluoro compounds and polycarbonates.
Moreover, the pH value of the liquid entering the photoreactor 2 can be 6.5-8, the average flow velocity of the liquid can be 0.5-2 m/s, and the retention time of the liquid can be 5-60 s.
The method for rapidly disinfecting and removing disinfection byproducts by using the device for rapidly disinfecting and removing disinfection byproducts in the present case is further described with reference to fig. 1 and 2:
when the rapid disinfection and the disinfection by-product removal are carried out, the liquid to be treated enters the aeration tank 1 from the inflow port 41 for aeration; then, the aerated solution to be treated enters a photoreactor 2, and is photolyzed by the photoreactor 2 to obtain a sterilized solution; the sterilized liquid flows out from the outlet 44.
It should be noted that the device described in the present application is very suitable for end control of drinking water, and therefore, the liquid to be treated may be drinking water.
In order to better illustrate the implementation effect of the device for rapidly disinfecting and removing disinfection byproducts, examples 1-6 of the present application adopt devices with different parameters to rapidly disinfect and remove byproducts from drinking water. In which tables 1-1 and 1-2 list specific process parameters for rapid sterilization and removal of sterilization byproducts using the apparatus of examples 1-6.
Table 1-1.
Tables 1-2.
| Serial number | Aeration time (min) | Flow of fluid in photoreactor (mL/min) | Reaction time of the apparatus(s) |
| Example 1 | 5 | 0.8 | 15 |
| Example 2 | 5 | 0.8 | 15 |
| Example 3 | 5 | 0.8 | 15 |
| Example 4 | 5 | 16 | 11 |
| Example 5 | 5 | 60 | 11 |
| Example 6 | 5 | 90 | 8 |
Tables 2-1 and 2-2 show the disinfection effect when the apparatus of examples 1 and 3-6 was used for rapid disinfection and the disinfection by-products were removed.
Table 2-1.
Table 2-2.
Note: in tables 2-1 and 2-2, THMs represent the concentration of trihalomethanes, HAAs represent the concentration of haloacetic acids, HANs represent the concentration of haloacetonitrile, and HNMs represent the concentration of halonitromethanes.
As can be seen by combining tables 2-1 and 2-2, the device has excellent disinfection effect after rapid disinfection and disinfection by-product removal, the DBPs content such as THMs, HAAs, HANs and HNMs content is remarkably reduced, and the number of Escherichia coli is also remarkably reduced.
In the apparatus for rapid disinfection and removal of disinfection by-products of example 2, the solution to be treated contained 10610% bovine serum albumin solution (Abs) of PFU hepatitis A Virus254＝13.9cm-1). The liquid to be treated enters the photoreactor through a pump, the flow is controlled to be 0.8mL/min, it needs to be noted that the reaction time in the photoreactor can be adjusted by changing the length of the capillary, and the disinfected liquid is taken out from an outflow port after the photoreactor is stabilized to detect the number of the formed corrosion spots of the residual hepatitis A virus. The photoreactor was carried out at room temperature.
The results obtained with the final use can be referred to fig. 3. Fig. 3 schematically shows the sterilization effect when the apparatus for rapid sterilization and removal of sterilization byproducts of example 2 is used for sterilization.
As shown in FIG. 3, curve I shows the variation of the attenuation coefficient of the hepatitis A virus with the implementation, and from the variation of the curve, it can be seen that the disinfection effect of the apparatus for rapid disinfection and removal of disinfection by-products of example 2 is significant, which has a very rapid disinfection rate for the hepatitis A virus, and the attenuation coefficient of the hepatitis A virus can reach 10 within 3s of reaction time3. When the reaction time is prolonged to 10s, the attenuation coefficient of the hepatitis A virus can reach 103.4。
In conclusion, the device is suitable for performing end control on drinking water, the drinking water can be blown off by the aeration tank, the drinking water is photolyzed by the photoreactor, the effects of quickly disinfecting and removing disinfection byproducts can be effectively realized under the synergistic action of blowing off and photolysis, and the device has positive significance for ensuring the biological safety of the drinking water and reducing the health risk brought by the disinfection byproducts.
In addition, the device has the advantages of short reaction time, small occupied space, high space utilization rate and good disinfection effect.
In addition, the device of the invention does not need to add chemical agents additionally, and is simple to operate and maintain.
In some embodiments, the capillary film with good light transmission performance is adopted, and the light reflection coating layer is arranged, so that the device has high light energy utilization rate and high photochemical reaction rate.
In some embodiments, the capillary thin film formed by a plurality of capillaries arranged side by side can make the reaction time of the device easy to control and the heat dissipation area large. Therefore, the technical scheme of the invention does not need to additionally arrange a condensing device, and has positive significance for improving the space utilization rate and reducing the occupied space of the device.
The method according to the present invention also has the advantages and advantageous effects described above.
It should be noted that the prior art in the protection scope of the present invention is not limited to the examples given in the present application, and all the prior art which is not inconsistent with the technical scheme of the present invention, including but not limited to the prior patent documents, the prior publications and the like, can be included in the protection scope of the present invention.
In addition, the combination of the features in the present application is not limited to the combination described in the claims of the present application or the combination described in the embodiments, and all the features described in the present application may be freely combined or combined in any manner unless contradictory to each other.
It should also be noted that the above-mentioned embodiments are only specific embodiments of the present invention. It is apparent that the present invention is not limited to the above embodiments and similar changes or modifications can be easily made by those skilled in the art from the disclosure of the present invention and shall fall within the scope of the present invention.
Claims (11)
1. An apparatus for rapid disinfection and removal of disinfection byproducts, the apparatus comprising:
the aeration tank is provided with an inflow port and an aeration tank outlet and comprises a tank body, the upper end surface of the tank body is provided with a tank cover, the tank cover is provided with a ventilation opening, and the bottom of the tank body is provided with an aeration head;
the reactor comprises a photoreactor, wherein the photoreactor is internally provided with a photoreactor inlet and a flow outlet, the photoreactor inlet is communicated with the aeration tank outlet pipeline, and ultraviolet light is generated in the photoreactor.
2. The device of claim 1, wherein the device comprises a water pump, and a valve is arranged on a pipeline communicated with the water pump.
3. The apparatus according to claim 1 or 2, wherein the photo reactor comprises a housing, a UV lamp disposed in the housing, and a photo reaction module covering a tube body of the UV lamp, wherein the UV lamp generates the ultraviolet light, and the photo reactor inlet and the outlet are disposed on the photo reaction module.
4. The apparatus according to claim 3, wherein the photoreaction module comprises a first tube section, a second tube section, and a capillary membrane connected to the first tube section and the second tube section via a joint, the capillary membrane is composed of a plurality of capillaries arranged side by side, the first tube section is provided with the photoreactor inlet, and the second tube section is provided with the outflow port.
5. A device according to claim 4, wherein the capillary has a tube diameter of 10 μm-2 mm.
6. The apparatus of claim 5, wherein the capillary tube is made of at least one material selected from the group consisting of: polymethyl methacrylate, polyperfluoro compounds and polycarbonates.
7. The device as claimed in claim 6, wherein the UV lamp tube is a low pressure UV lamp having a dominant wavelength of 160-280 nm.
8. The device of claim 3, wherein the housing comprises a housing and a base connected to the housing, the UV lamp tube is detachably connected to the base, and a light reflective coating layer is coated on an inner wall of the housing, wherein the light reflective coating layer is a coating with a reflectivity greater than 50%.
9. The apparatus of claim 8, wherein the light reflective coating layer is formed by coating the inner wall of the housing with specular aluminum or sand-blasting aluminum oxide.
10. The apparatus of claim 3, wherein the liquid entering the photoreactor has at least one of the following parameters:
the pH value of the liquid is 6.5-8;
the average flow velocity of the liquid is 0.5-2 m/s;
the residence time of the liquid is 5-60 s.
11. A method for rapid disinfection and removal of disinfection byproducts using the apparatus of any of claims 1-10, comprising the steps of:
the liquid to be treated enters an aeration tank from the inflow port for aeration;
the aerated solution to be treated enters a photoreactor and is photolyzed by the photoreactor to obtain a sterilized solution;
the sterilized liquid flows out from the outflow port;
wherein the liquid to be treated is drinking water.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022072127A1 (en) * | 2020-10-01 | 2022-04-07 | Paragon Space Development Corporation | Gas phase photolytic oxidation for water purification |
| US11608285B2 (en) | 2016-09-16 | 2023-03-21 | Paragon Space Development Corporation | In-situ resource utilization-derived water purification and hydrogen and oxygen production |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108755A (en) * | 2006-07-19 | 2008-01-23 | 深圳市海川实业股份有限公司 | Medical treatment wastewater processing technique |
| CN101337722A (en) * | 2007-07-03 | 2009-01-07 | 天津甘泉集团有限公司 | Sterilization system for direct drinking water |
| CN202089861U (en) * | 2007-05-10 | 2011-12-28 | 小帕特里克·T·奥利根 | water treatment system for treating and improving water |
| CN203360218U (en) * | 2013-05-24 | 2013-12-25 | 重庆泰克环保工程设备有限公司 | Dual-aeration MBR (membrane bioreactor) membrane tank provided with ultraviolet sewage disinfection device |
| CN108569744A (en) * | 2018-05-10 | 2018-09-25 | 浙江大学 | A kind of ultraviolet sterilization apparatus for cyclic culture sewage disposal |
-
2020
- 2020-04-09 CN CN202010273352.XA patent/CN111362486A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108755A (en) * | 2006-07-19 | 2008-01-23 | 深圳市海川实业股份有限公司 | Medical treatment wastewater processing technique |
| CN202089861U (en) * | 2007-05-10 | 2011-12-28 | 小帕特里克·T·奥利根 | water treatment system for treating and improving water |
| CN101337722A (en) * | 2007-07-03 | 2009-01-07 | 天津甘泉集团有限公司 | Sterilization system for direct drinking water |
| CN203360218U (en) * | 2013-05-24 | 2013-12-25 | 重庆泰克环保工程设备有限公司 | Dual-aeration MBR (membrane bioreactor) membrane tank provided with ultraviolet sewage disinfection device |
| CN108569744A (en) * | 2018-05-10 | 2018-09-25 | 浙江大学 | A kind of ultraviolet sterilization apparatus for cyclic culture sewage disposal |
Non-Patent Citations (1)
| Title |
|---|
| 杨建军主编: "《预防医学》", 31 August 2011 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11608285B2 (en) | 2016-09-16 | 2023-03-21 | Paragon Space Development Corporation | In-situ resource utilization-derived water purification and hydrogen and oxygen production |
| WO2022072127A1 (en) * | 2020-10-01 | 2022-04-07 | Paragon Space Development Corporation | Gas phase photolytic oxidation for water purification |
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