CN112744970A - Integrated drinking water disinfection equipment - Google Patents
Integrated drinking water disinfection equipment Download PDFInfo
- Publication number
- CN112744970A CN112744970A CN202110109526.3A CN202110109526A CN112744970A CN 112744970 A CN112744970 A CN 112744970A CN 202110109526 A CN202110109526 A CN 202110109526A CN 112744970 A CN112744970 A CN 112744970A
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- Prior art keywords
- ozone
- filter
- equipment
- box
- drinking water
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 33
- 239000003651 drinking water Substances 0.000 title claims abstract description 28
- 235000020188 drinking water Nutrition 0.000 title claims abstract description 27
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 229910001220 stainless steel Inorganic materials 0.000 claims description 12
- 239000010935 stainless steel Substances 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 8
- 239000002033 PVDF binder Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 235000012206 bottled water Nutrition 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 230000001954 sterilising effect Effects 0.000 description 3
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Landscapes
- 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)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses an integrated drinking water disinfection device, which comprises a box-type shell, wherein a main system pipeline is arranged in the box-type shell, a magnetizer, a precision filter, a micro-filter, an ultraviolet device and an ozone device are arranged on the main system pipeline, a parallel overtaking pipeline is arranged between the magnetizer and a water outlet, and the ozone device is fixed on the inner ground surface of the box-type shell through a fixing frame; be provided with ozone on the main line of system between precision filter and the microfilter and throw feeder apparatus I, ozone is thrown feeder apparatus I and is connected with ozone equipment through ozone gas-supply pipe I, is provided with ozone on the main line of system behind the ultraviolet equipment and throws feeder apparatus II, and ozone is thrown feeder apparatus II and is connected with ozone equipment through ozone gas-supply pipe II. The invention provides a disinfection device which has good disinfection effect and can ensure that subsequent water and pipelines have continuous disinfection effect; the integrated drinking water disinfection equipment has a certain advanced oxidation effect, can remove partial micro-polluted organic matters in water, has high automatic control degree and is convenient to manage.
Description
Technical Field
The invention relates to the technical field of drinking water disinfection, in particular to integrated drinking water disinfection equipment.
Background
The safety problem of drinking water has direct influence on human health, and especially the microbial safety is the most common problem. With the development of social economy, China vigorously promotes urban and rural overall regional water supply, but due to the factors such as local condition limitation, weak water production process or management, and the like, in reality, a dispersed water supply mode is still adopted in many areas, particularly rural areas or small town areas, the production process is backward, the facilities are old, no effective disinfection facilities exist, the problem of water quality pollution of drinking water often occurs, and the national standard requirements cannot be met.
At present, common drinking water disinfection modes include disinfection modes such as chlorine, chlorine dioxide, ozone, ultraviolet rays and the like, and the disinfection modes have advantages and disadvantages respectively. Considering the decentralized water supply mode in rural areas or small town areas, the disinfection equipment which is safe, effective, pollution-free and convenient to manage is adopted to disinfect drinking water, and the disinfection equipment is the best choice for solving the current problems.
In conclusion, how to provide an integrated drinking water disinfection device which has good disinfection effect, ensures continuous disinfection effect of subsequent water and pipelines, has advanced oxidation effect, effectively removes micro-polluted organic matters, has high automatic control degree and convenient management, and aims to solve the problem of drinking water safety in rural areas or small town areas, which is a problem to be solved urgently.
Disclosure of Invention
In order to overcome a series of defects in the prior art, the present invention aims to solve the above problems, and provides an integrated drinking water disinfection apparatus, which is characterized in that the apparatus comprises a box-type housing 1 fixed on the ground, the exterior of the box-type housing 1 is provided with a water inlet 3 connected with a water supply pipeline and a water outlet 30 connected with a water using pipeline, the water inlet 3 is connected to the water supply pipeline through a flange, and the water outlet 30 is connected to the water using pipeline through a flange; a main system pipeline is arranged inside the box-type shell 1, a magnetizer 4, a precise filter 7, a micro filter 12, an ultraviolet device 15 and an ozone device 25 are arranged on the main system pipeline, a parallel overrunning pipeline 29 is arranged between the magnetizer 4 and a water outlet 30, an inlet of the parallel overrunning pipeline 29 is connected to the main system pipeline through a three-way valve I5, an outlet of the parallel overrunning pipeline 29 is connected to the main system pipeline through a three-way valve II 21, and the ozone device 25 is fixed on the inner ground surface of the box-type shell 1 through a fixing frame 26; an ozone adding device I10 is arranged on a main pipeline of the system between the precision filter 7 and the micro-filter 12, the ozone adding device I10 is connected with an ozone device 25 through an ozone gas transmission pipe I28, a pressure sensor I8 is installed on the precision filter 7, and the pressure sensor I8 is connected with a control system 17 through a signal line I9; the precision filter 7 is connected with a drain valve I6; a pressure sensor II 13 is arranged on the microfilter 12, and the pressure sensor II 13 is connected with a control system 17 through a signal line II 14; the micro filter 12 is connected with a blow-down valve II 11; the ultraviolet equipment 15 is connected with a control system 17 through a signal line III 16.
Preferably, an ozone adding device II 18 is arranged behind the ultraviolet equipment 15, and the ozone adding device II 18 is connected with ozone equipment 25 through an ozone gas conveying pipe II 27; a flow meter 19 is arranged behind the ozone adding device II 18, and the flow meter 19 is connected with the control system 17 through a signal line V23; an online ozone concentration monitor 20 is arranged behind the flowmeter 19 and is connected with the control system 17 through a signal line IV 22; the ozone device 25 is connected with the control system 17 through a signal line VI 24.
Preferably, the magnetizer 4 is a permanent magnet magnetizer or an electromagnetic magnetizer.
Preferably, the shell of the precision filter 7 is made of sanitary grade 304 or 316L stainless steel, the filter element is made of sanitary grade 304 or 316L stainless steel, and the filter diameter is 20-50 um.
Preferably, the shell of the micro-filter 12 is made of sanitary 304 or 316L stainless steel, the filter element is made of sanitary PVDF or PTFE, and the filter diameter is 0.1-1.0 um.
Preferably, the housing of the ultraviolet device 15 is made of sanitary grade 304 or 316L stainless steel, and the output power of the ultraviolet lamp tube is fixed power or adjustable power.
Preferably, the ozone device 25 is an electrolytic water ozone device or an oxygen source ozone device.
Preferably, one side of box casing 1 is provided with access door 2, the outside top of box casing 1 is provided with the rings 31 of being convenient for remove hoist and mount.
Compared with the prior art, the invention has the following beneficial effects:
1) the invention provides an integrated drinking water disinfection device, which adopts a case shell type design to be isolated from the outside as much as possible, namely, a process pipeline and a control system are integrally arranged in a case body, and only a flange water inlet connected with a water supply pipeline and a flange water outlet connected with a water pipeline are reserved outside the case body;
2) the integrated drinking water disinfection equipment provided by the invention utilizes an original water supply pipeline to provide water pressure, water flow passes through a precision filter to filter out particulate matters with larger particle sizes in water, and then passes through a micro filter to filter out part of microorganisms, and meanwhile, an ozone inlet pipe is connected to the position of a water inlet of the micro filter;
3) according to the integrated drinking water disinfection equipment provided by the invention, the treatment process can ensure the disinfection of water flow passing through the whole equipment, and simultaneously ensure the disinfection continuity of water flow entering a water pipeline subsequently, and meanwhile, the system equipment can be conveniently installed and used on site.
Drawings
Fig. 1 is a schematic view of the overall structure of an integrated drinking water sterilizing apparatus according to the present invention.
The reference numbers in the figures are:
1-box type shell, 2-access door, 3-water inlet, 4-magnetizer, 5-three-way valve I, 6-blow-down valve I, 7-precision filter, 8-pressure sensor I, 9-signal line I, 10-ozone adding device I, 11-blow-down valve II, 12-micro filter, 13-pressure sensor II, 14-signal line II, 15-ultraviolet equipment, 16-signal line III, 17-control system, 18-ozone adding device II, 19-flowmeter, 20-online ozone concentration monitor, 21-three-way valve II, 22-signal line IV, 23-signal line V, 24-signal line VI, 25-ozone equipment, 26-fixing frame, 27-ozone gas pipe II, 28-ozone gas pipe I, 29-parallel surpassing pipelines, 30-water outlets and 31-hanging rings.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiments and the directional terms described below with reference to the drawings are exemplary and intended to be used in the explanation of the invention, and should not be construed as limiting the invention.
An integrated drinking water sterilizing apparatus according to the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, an integrated drinking water sterilizing apparatus includes a box-type housing 1 fixed on the ground, a water inlet 3 connected to a water supply pipeline and a water outlet 30 connected to a water using pipeline are provided outside the box-type housing 1, the water inlet 3 is connected to the water supply pipeline by a flange, and the water outlet 30 is connected to the water using pipeline by a flange; a main system pipeline is arranged inside the box-type shell 1, a magnetizer 4, a precise filter 7, a micro filter 12, an ultraviolet device 15 and an ozone device 25 are arranged on the main system pipeline, a parallel overrunning pipeline 29 is arranged between the magnetizer 4 and a water outlet 30, an inlet of the parallel overrunning pipeline 29 is connected to the main system pipeline through a three-way valve I5, an outlet of the parallel overrunning pipeline 29 is connected to the main system pipeline through a three-way valve II 21, and the ozone device 25 is fixed on the inner ground surface of the box-type shell 1 through a fixing frame 26; an ozone adding device I10 is arranged on a main pipeline of the system between the precision filter 7 and the micro-filter 12, the ozone adding device I10 is connected with an ozone device 25 through an ozone gas transmission pipe I28, a pressure sensor I8 is installed on the precision filter 7, and the pressure sensor I8 is connected with a control system 17 through a signal line I9; the precision filter 7 is connected with a drain valve I6; a pressure sensor II 13 is arranged on the microfilter 12, and the pressure sensor II 13 is connected with a control system 17 through a signal line II 14; the micro filter 12 is connected with a blow-down valve II 11; the ultraviolet equipment 15 is connected with a control system 17 through a signal line III 16.
Preferably, an ozone adding device II 18 is arranged behind the ultraviolet equipment 15, and the ozone adding device II 18 is connected with ozone equipment 25 through an ozone gas conveying pipe II 27; a flow meter 19 is arranged behind the ozone adding device II 18, and the flow meter 19 is connected with the control system 17 through a signal line V23; an online ozone concentration monitor 20 is arranged behind the flowmeter 19 and is connected with the control system 17 through a signal line IV 22; the ozone device 25 is connected with the control system 17 through a signal line VI 24.
Preferably, the magnetizer 4 is a permanent magnet magnetizer or an electromagnetic magnetizer.
Preferably, the shell of the precision filter 7 is made of sanitary grade 304 or 316L stainless steel, the filter element is made of sanitary grade 304 or 316L stainless steel, and the filter diameter is 20-50 um.
Preferably, the shell of the micro-filter 12 is made of sanitary 304 or 316L stainless steel, the filter element is made of sanitary PVDF or PTFE, and the filter diameter is 0.1-1.0 um.
Preferably, the housing of the ultraviolet device 15 is made of sanitary grade 304 or 316L stainless steel, and the output power of the ultraviolet lamp tube is fixed power or adjustable power.
Preferably, the ozone device 25 is an electrolytic water ozone device or an oxygen source ozone device.
Preferably, an access door 2 is arranged on one side of the box-type shell 1, and equipment in the box-type shell 1 can be overhauled through the access door 2; the outer top end of the box-type shell 1 is provided with a hanging ring 31 convenient for moving and hoisting.
It should be noted that the magnetizer 4, the precision filter 7, the micro-filter 12, the ultraviolet equipment 15 and the ozone equipment 25 are arranged on the system pipeline inside the box-type shell 1, wherein the magnetizer 4, the precision filter 7 and the micro-filter 12 are optional equipment, and the rest are necessary equipment; the external form of the box-type shell 1 can be adjusted according to the size of the whole equipment, but the box-type shell has the functions of being capable of being hoisted and convenient to install.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. An integrated drinking water disinfection device is characterized by comprising a box-type shell (1) fixed on the ground, wherein a water inlet (3) and a water outlet (30) are arranged outside the box-type shell (1); the box-type shell is characterized in that a main system pipeline is arranged inside the box-type shell (1), and a magnetizer (4), a precise filter (7), a micro-filter (12), an ultraviolet device (15) and an ozone device (25) are arranged on the main system pipeline.
2. The integrated drinking water disinfection device according to claim 1, wherein a parallel overtaking pipeline (29) is arranged between the magnetizer (4) and the water outlet (30), an inlet of the parallel overtaking pipeline (29) is connected to the main system pipeline through a three-way valve I (5), an outlet of the parallel overtaking pipeline (29) is connected to the main system pipeline through a three-way valve II (21), and the ozone device (25) is fixed on the ground in the box-type shell (1) through a fixing frame (26).
3. The integrated drinking water disinfection device according to claim 1, wherein an ozone adding device I (10) is arranged between the precision filter (7) and the micro filter (12), the ozone adding device I (10) is connected with the ozone equipment (25) through an ozone gas transmission pipe I (28), a pressure sensor I (8) is installed on the precision filter (7), and the pressure sensor I (8) is connected with the control system (17) through a signal line I (9); the precision filter (7) is connected with a drain valve I (6); a pressure sensor II (13) is arranged on the microfilter (12), and the pressure sensor II (13) is connected with a control system (17) through a signal line II (14); the micro filter (12) is connected with a blow-down valve II (11); the ultraviolet equipment (15) is connected with the control system (17) through a signal wire III (16).
4. The integrated drinking water disinfection equipment according to claim 1 or 3, wherein an ozone adding device II (18) is arranged behind the ultraviolet equipment (15), the ozone adding device II (18) is connected with ozone equipment (25) through an ozone gas conveying pipe II (27), a flow meter (19) is arranged behind the ozone adding device II (18), the flow meter (19) is connected with a control system (17) through a signal line V (23), an online ozone concentration monitor (20) is arranged behind the flow meter (19), the online ozone concentration monitor is connected with the control system (17) through a signal line IV (22), and the ozone equipment (25) is connected with the control system (17) through a signal line VI (24).
5. The integrated potable water disinfection apparatus of claim 1, wherein: the magnetizer (4) is a permanent magnet magnetizer or an electromagnetic magnetizer.
6. The integrated drinking water disinfection device according to claim 1, wherein the shell of the precision filter (7) is made of sanitary grade 304 or 316L stainless steel, the filter element is made of sanitary grade 304 or 316L stainless steel, and the filter diameter is 20-50 um; the shell of the ultraviolet equipment (15) is made of sanitary grade 304 or 316L stainless steel, and the output power of the ultraviolet lamp tube is fixed power or adjustable power.
7. The integrated drinking water disinfection apparatus according to claim 1, wherein the micro filter (12) housing is made of sanitary 304 or 316L stainless steel, the filter element is made of sanitary PVDF or PTFE, and the filter diameter is 0.1-1.0 um.
8. The integrated drinking water disinfection apparatus according to claim 1, wherein the ozone apparatus (25) is an electrolyzed water ozone apparatus or an oxygen source ozone apparatus.
9. The integrated drinking water disinfection device according to claim 1, wherein an access door (2) is provided at one side of the box-type housing (1), and a hanging ring (31) for easy moving and hoisting is provided at the top end of the exterior of the box-type housing (1).
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CN202110109526.3A CN112744970A (en) | 2021-01-25 | 2021-01-25 | Integrated drinking water disinfection equipment |
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CN202110109526.3A CN112744970A (en) | 2021-01-25 | 2021-01-25 | Integrated drinking water disinfection equipment |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115304205A (en) * | 2022-08-12 | 2022-11-08 | 清华大学 | Water purification equipment and method |
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2021
- 2021-01-25 CN CN202110109526.3A patent/CN112744970A/en active Pending
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RU2011101284A (en) * | 2011-01-13 | 2012-07-20 | Игорь Васильевич Масик (RU) | METHOD FOR PRODUCING DRINKING WATER AND DEVICE FOR ITS IMPLEMENTATION |
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Title |
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杨春平等: "《废水处理原理》", 31 December 2012, 湖南大学出版社, pages: 337 * |
田道全: "《土木建筑教育改革理论与实践论文集.第11卷》", 31 August 2009, 武汉理工大学出版社, pages: 32 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115304205A (en) * | 2022-08-12 | 2022-11-08 | 清华大学 | Water purification equipment and method |
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