CN108117237B - Domestic sewage treatment environment-friendly device - Google Patents
Domestic sewage treatment environment-friendly device Download PDFInfo
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- CN108117237B CN108117237B CN201810112157.1A CN201810112157A CN108117237B CN 108117237 B CN108117237 B CN 108117237B CN 201810112157 A CN201810112157 A CN 201810112157A CN 108117237 B CN108117237 B CN 108117237B
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—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
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
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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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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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)
- Biological Treatment Of Waste Water (AREA)
- Water Treatment By Sorption (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a domestic sewage treatment environmental protection device, which can quickly realize sewage treatment of families or certain buildings, has rapid treatment and low sewage treatment cost, realizes the recycling of water in the families or the buildings, is used for firstly carrying out oxygen aeration on sewage by an oxygen aeration stirring tank, and can also realize the preliminary crushing of individual large-particle organic matters by stirring blades, then the organic matters enter a crushing filter cylinder to be crushed into fine structures and then enter each nitration treatment tank, the organic matters are treated by utilizing nitrobacteria and other bacteria on a porous ring in the nitration treatment tank, then the organic matters are filtered by utilizing a bottom filter, the water quality can be ensured, in the invention, the porous ring has reasonable structural design, the oxygen of various bacteria is ensured, the circulation effect is also ensured, the crushing effect of the crushing cylinder is good, and required treatment substances can be added on a feeding connector according to the actual water quality condition, the quality of the treated water quality is ensured.
Description
Technical Field
The invention relates to an environment-friendly domestic sewage treatment device, and belongs to the technical field of domestic sewage treatment equipment.
Background
The shortage of water resources is a phenomenon of water resource shortage, because the total amount of water on the earth is fixed, the total amount of drinking fresh water is less, and the problem of water resource shortage is increasingly obvious along with the fact that utilization and unreasonable waste are more and more severe. In order to solve the problem of water resource fatigue, the reasonable recycling of domestic sewage plays an extremely important role in the utilization of water resources. In addition, if domestic sewage discharges without control, it not only can cause the water waste, but also can produce environmental pollution, and along with people's attention to environmental protection degree is more and more high at present, people also more and more pay more attention to domestic sewage treatment.
The current domestic sewage treatment is generally centralized in a sewage treatment plant, a large-scale sewage treatment device is generally adopted, the domestic sewage needs to be intensively flowed into the sewage treatment plant in the treatment mode, the water quality can be seriously deteriorated after the sewage is treated for a long time, and the sewage treatment cost is higher, so that how to design a sewage treatment device used in a family or a building so as to meet the use requirement of occasions with low water quality requirements in the family or the building is very important for environmental protection.
Aiming at the problems, the invention provides the domestic sewage treatment environment-friendly device, which improves the sewage treatment effect and the environment protection performance.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a domestic sewage handles environment-friendly device, its characterized in that, it includes sedimentation tank, oxygenation agitator tank, processing case, outlet pipe and clean water basin, the sedimentation tank is connected to sewage eduction gear through the sewage connecting pipe, the play water end of sedimentation tank is connected to through the connecting pipe oxygenation agitator tank, the play water end of oxygenation agitator tank is connected to through the connecting pipe processing case, the water that the processing case was handled after handling passes through go out water piping connection to the clean water basin, wherein, it strains adsorption equipment at the bottom of being provided with crushing cartridge filter, a plurality of nitration jar and a plurality of to handle the incasement nitrify the parallelly connected setting of jar on the outlet pipe of crushing cartridge filter, each the play water end of nitration jar all is connected to on the bottom strains adsorption equipment.
Further, as preferred, the crushing and filtering cylinder level sets up handle the inside upper end of case, and is a plurality of nitrify the parallel vertical setting of processing jar and be in the below of crushing and filtering cylinder, end is strained adsorption equipment and is set up the bottom of handling the case.
Further, as preferred, be provided with at least one deck filter screen in the sedimentation tank, the play water end of sewage connecting pipe is located the below of filter screen, with the port of the play water connection's of sedimentation tank connecting pipe is located the top of filter screen, the sedimentation tank with be provided with the water pump on the connecting pipe between the oxygenation agitator tank.
Further, as preferred, the inside of oxygenation agitator tank is coiled and is provided with air outlet coil, the last intensive fine pore that supplies the gas outflow that is provided with of air outlet coil, air outlet coil is connected with outside pump of blowing, still be provided with the (mixing) shaft in the oxygenation agitator tank, the (mixing) shaft is rotated by the drive of stirring driver, be provided with stirring leaf, middle stirring leaf and lower stirring leaf on the (mixing) shaft at least, it is responsible for upwards stirring to the water in the oxygenation agitator tank to go up the stirring leaf, middle stirring leaf is responsible for stirring to the lateral wall of oxygenation agitator tank to the water in the oxygenation agitator tank, stirring leaf is responsible for stirring downwards to the water in the oxygenation agitator tank down.
Preferably, each nitrification treatment tank is internally provided with a plurality of porous rings in a row, each porous ring is of a cylindrical ring structure, the center of each porous ring is a central hole, the porous rings are densely provided with fine holes, the outer circumferential side wall of each porous ring is provided with tooth holes, and adjacent tooth holes are separated by connecting teeth.
Further, as preferred, the crushing cartridge filter is long cartridge type structure, the equal detachable connection in business turn over both ends of crushing cartridge filter is provided with into water lid and play water lid, it is provided with the paddle to advance water lid or go out water to cover, be provided with on the crushing cartridge filter along its radial extension at least one feeding joint, coaxial cover is equipped with the interior shell of jacket of crushing cartridge filter, the cotton is smashed to porous stereoplasm has been installed to detachable in the interior shell of jacket, the both ends of interior shell of jacket respectively with the inlet opening of the lid of intaking, the apopore of play water lid is connected.
Further, preferably, the number of the feeding joints is 2 to 4.
Further, preferably, the cross section of the inner shell has a quincunx structure.
Further, as preferred, the bottom filter adsorption device comprises a sand filtering layer, a sponge layer, an activated carbon adsorption layer and an ultrafiltration membrane which are sequentially arranged from top to bottom, wherein the ultrafiltration membrane is of a conical structure with a small lower end.
Compared with the prior art, the invention has the beneficial effects that:
the sewage treatment device of the invention is simple and reliable, can quickly realize the sewage treatment of families or certain buildings, has rapid treatment speed and low cost, realizes the recycling of water in families or buildings, firstly carries out oxygen aeration on the sewage by the oxygen aeration stirring tank, and the stirring blades can also realize the preliminary crushing of individual large-particle organic matters, then the organic matters enter the crushing filter cylinder to be crushed into a fine structure, then the organic matters enter each nitration treatment tank, the organic matters are treated by utilizing the nitrobacteria and other bacteria on the porous rings in the nitration treatment tanks, and then the bottom filtration is utilized to carry out the filtration, thereby ensuring the water quality, in the invention, the porous rings have reasonable structural design, namely ensuring the oxygen of various bacteria and ensuring the circulation effect, in addition, the crushing effect of the crushing cylinder is good, and the required treatment substances can be added on the feeding connector according to the actual water quality condition, the quality of the treated water quality is ensured.
Drawings
FIG. 1 is a schematic structural view of an environmental protection apparatus for domestic sewage treatment according to the present invention;
FIG. 2 is a schematic structural view of an aeration stirring assembly of the domestic sewage treatment environmental protection device of the present invention;
FIG. 3 is a schematic view of a porous ring structure of an environmental protection apparatus for domestic sewage treatment according to the present invention;
FIG. 4 is a schematic structural view of a pulverizing and filtering assembly of an environmental protection apparatus for domestic sewage treatment according to the present invention;
the device comprises a sedimentation tank 1, a sedimentation tank 2, an oxygenation stirring tank 3, a treatment box 4, a water outlet pipe 5, a clean water tank 6, a filter screen 7, a sewage connecting pipe 8, a water pump 9, a connecting pipe 10, a stirring driver 11, an air outlet coil pipe 12, an air blowing pump 13, a crushing filter cylinder 14, a feeding joint 15, a nitration treatment tank 16, a sand filtering layer 17, a sponge layer 18, an active carbon adsorption layer 19, an ultrafiltration membrane 20, a middle stirring blade 21, a lower stirring blade 22, a porous ring 23, a pore 24, a central hole 25, a connecting tooth 26, a tooth hole 27, a water inlet cover 28, a blade 29, porous hard crushing cotton 30 and an inner sleeve shell.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a domestic sewage handles environment-friendly device, its characterized in that, it includes sedimentation tank 1, oxygenation agitator tank 2, handles case 3, outlet pipe 4 and clean water basin 5, sedimentation tank 1 is connected to sewage eduction gear through sewage connecting pipe 7, the play water end of sedimentation tank 1 is connected to through connecting pipe 9 oxygenation agitator tank 2, the play water end of oxygenation agitator tank 2 is connected to through the connecting pipe handle case 3, the water that handles after case 3 handles passes through outlet pipe 4 is connected to clean water basin 5, wherein, it strains adsorption equipment at the bottom to be provided with crushing filtration jar 13, a plurality of nitration jar 15 and end in 3, and is a plurality of nitration jar 15 connects in parallel and sets up on the outlet pipe of crushing filtration jar, each nitration jar 15 goes out the water end and all is connected to on the end strain adsorption equipment.
In this embodiment, the pulverization and filtration cartridge 13 is horizontally disposed at the inner upper end of the treatment tank, a plurality of nitrification treatment tanks 15 are vertically disposed in parallel below the pulverization and filtration cartridge 13, and the bottom filtration adsorption apparatus is disposed at the bottom of the treatment tank. Be provided with at least one deck filter screen 6 in the sedimentation tank, the play water end of sewage connecting pipe is located the below of filter screen 6, with the port of the play water connection's of sedimentation tank connecting pipe is located the top of filter screen 6, sedimentation tank 1 with be provided with water pump 8 on the connecting pipe between oxygenation agitator tank 2.
As a preferred embodiment, an air outlet coil 11 is coiled inside the oxygen increasing stirring tank, fine pores for air to flow out are densely arranged on the air outlet coil 11, the air outlet coil is connected with an external air blowing pump 12, a stirring shaft is further arranged inside the oxygen increasing stirring tank, the stirring shaft is driven by a stirring driver to rotate, at least an upper stirring blade, a middle stirring blade 20 and a lower stirring blade 21 are arranged on the stirring shaft, the upper stirring blade is responsible for upwards stirring water in the oxygen increasing stirring tank, the middle stirring blade 20 is responsible for stirring water in the oxygen increasing stirring tank to the side wall of the oxygen increasing stirring tank, and the lower stirring blade 21 is responsible for downwards stirring water in the oxygen increasing stirring tank.
As shown in FIG. 3, a plurality of porous rings 22 are arranged in each nitrification treatment tank in a row, the porous rings 22 are cylindrical rings, the center of each porous ring 22 is a central hole 24, fine holes 23 are densely arranged on the porous rings 22, toothed holes 26 are arranged on the outer circumferential side wall of each porous ring 22, and adjacent toothed holes 26 are separated by connecting teeth 25.
As shown in fig. 4, the pulverizing and filtering cartridge is a long-cylinder structure, the inlet and outlet ends of the pulverizing and filtering cartridge 13 are detachably connected to form an inlet cover 27 and an outlet cover, the inlet cover or the outlet cover is provided with a paddle 28, the pulverizing and filtering cartridge 13 is provided with at least one feeding joint 14 extending along the radial direction thereof, the pulverizing and filtering cartridge is internally coaxially sleeved with an inner casing 30, the inner casing 30 is internally detachably provided with porous hard pulverizing cotton 29, and two ends of the inner casing 30 are respectively connected with the inlet hole of the inlet cover and the outlet hole of the outlet cover.
In this embodiment, the number of the feeding joints is 3, and each feeding joint can be added with a PH adjusting agent, an adsorbent and the like.
In order to increase the cross-sectional area for filtration, the cross-section of the inner casing is a quincunx structure. The bottom filtering and adsorbing device comprises a sand filtering layer 16, a sponge layer 17, an activated carbon adsorption layer 18 and an ultrafiltration membrane 19 which are sequentially arranged from top to bottom, wherein the ultrafiltration membrane 19 is of a conical structure with a small lower end.
The sewage treatment device of the invention is simple and reliable, can quickly realize the sewage treatment of families or certain buildings, has rapid treatment speed and low cost, realizes the recycling of water in families or buildings, firstly carries out oxygen aeration on the sewage by the oxygen aeration stirring tank, and the stirring blades can also realize the preliminary crushing of individual large-particle organic matters, then the organic matters enter the crushing filter cylinder to be crushed into a fine structure, then the organic matters enter each nitration treatment tank, the organic matters are treated by utilizing the nitrobacteria and other bacteria on the porous rings in the nitration treatment tanks, and then the bottom filtration is utilized to carry out the filtration, thereby ensuring the water quality, in the invention, the porous rings have reasonable structural design, namely ensuring the oxygen of various bacteria and ensuring the circulation effect, in addition, the crushing effect of the crushing cylinder is good, and the required treatment substances can be added on the feeding connector according to the actual water quality condition, the quality of the treated water quality is ensured.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The domestic sewage treatment environment-friendly device is characterized by comprising a sedimentation tank, an oxygenation stirring tank, a treatment tank, a water outlet pipe and a clean water tank, wherein the sedimentation tank is connected to a sewage discharge device through a sewage connecting pipe, the water outlet end of the sedimentation tank is connected to the oxygenation stirring tank through a connecting pipe, the water outlet end of the oxygenation stirring tank is connected to the treatment tank through a connecting pipe, water treated by the treatment tank is connected to the clean water tank through the water outlet pipe, a crushing filter cartridge, a plurality of nitrification treatment tanks and a bottom filter adsorption device are arranged in the treatment tank, the nitrification treatment tanks are arranged on the water outlet pipe of the crushing filter cartridge in parallel, and the water outlet ends of the nitrification treatment tanks are connected to the bottom filter adsorption device;
the crushing and filtering cylinder is horizontally arranged at the upper end in the treatment box, the nitrification treatment tanks are vertically arranged below the crushing and filtering cylinder in parallel, and the bottom filter adsorption device is arranged at the bottom of the treatment box;
at least one layer of filter screen is arranged in the sedimentation tank, the water outlet end of the sewage connecting pipe is positioned below the filter screen, the port of the connecting pipe connected with the water outlet of the sedimentation tank is positioned above the filter screen, and a water pump is arranged on the connecting pipe between the sedimentation tank and the oxygenation stirring tank;
the aeration stirring tank is characterized in that an air outlet coil is coiled inside the aeration stirring tank, micro pores for air to flow out are densely arranged on the air outlet coil, the air outlet coil is connected with an external air blowing pump, a stirring shaft is further arranged in the aeration stirring tank and driven to rotate by a stirring driver, at least an upper stirring blade, a middle stirring blade and a lower stirring blade are arranged on the stirring shaft, the upper stirring blade is responsible for stirring water in the aeration stirring tank upwards, the middle stirring blade is responsible for stirring the water in the aeration stirring tank towards the side wall of the aeration stirring tank, and the lower stirring blade is responsible for stirring the water in the aeration stirring tank downwards;
a plurality of porous rings are arranged in each nitrification treatment tank in a row, each porous ring is of a cylindrical ring structure, the center of each porous ring is a central hole, fine holes are densely arranged on the porous rings, toothed holes are formed in the side walls of the outer circumferences of the porous rings, and adjacent toothed holes are separated by connecting teeth;
the bottom filter adsorption device comprises a sand filtering layer, a sponge layer, an activated carbon adsorption layer and an ultrafiltration membrane which are sequentially arranged from top to bottom, and the ultrafiltration membrane is of a conical structure with a small lower end.
2. The domestic sewage treatment environmental protection device of claim 1, wherein: the crushing and filtering cylinder is a long cylinder type structure, the both ends of the business turn over of crushing and filtering cylinder are all detachably connected and are provided with water inlet cover and water outlet cover, the water inlet cover or the water outlet cover are provided with paddles, be provided with along its radial at least one feeding joint who extends on the crushing and filtering cylinder, coaxial cover is equipped with the interior shell of cover in the crushing and filtering cylinder, the cotton is smashed to porous stereoplasm that detachable has been installed in the interior shell of cover, the both ends of interior shell of cover respectively with the inlet opening of water inlet cover, the apopore of water outlet cover are connected.
3. The domestic sewage treatment environmental protection device of claim 2, wherein: the number of the feeding joints is 2-4.
4. The domestic sewage treatment environmental protection device of claim 2, wherein: the cross section of the inner casing is of a quincunx structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810112157.1A CN108117237B (en) | 2018-02-05 | 2018-02-05 | Domestic sewage treatment environment-friendly device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810112157.1A CN108117237B (en) | 2018-02-05 | 2018-02-05 | Domestic sewage treatment environment-friendly device |
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| CN108117237A CN108117237A (en) | 2018-06-05 |
| CN108117237B true CN108117237B (en) | 2020-12-01 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002045880A (en) * | 2000-08-04 | 2002-02-12 | Iida Biken:Kk | Contact material for river water purifying equipment |
| CN2811275Y (en) * | 2005-08-17 | 2006-08-30 | 长春立源水处理技术有限责任公司 | Axial flow self-oxygenation active sludge aerator |
| CN106927603A (en) * | 2017-05-16 | 2017-07-07 | 张阳康 | Novel all-in-one domestic sewage processing system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2244557Y (en) * | 1995-10-17 | 1997-01-08 | 林云明 | Elastic three-dimensional filling |
| CN2616529Y (en) * | 2003-04-24 | 2004-05-19 | 周增炎 | Suspension biological vector |
| TWI291457B (en) * | 2005-04-20 | 2007-12-21 | Kuo Chi Chang | Water processing device capable of promoting cleaning effect of filtration membrane |
| CN201614319U (en) * | 2010-01-08 | 2010-10-27 | 北京百氏源环保技术有限公司 | Honeycomb biological suspended packing for water treatment |
| JP5546993B2 (en) * | 2010-08-13 | 2014-07-09 | 旭化成ケミカルズ株式会社 | Manufacturing method of irregular porous hollow fiber membrane, irregular porous hollow fiber membrane, module using irregular porous hollow fiber membrane, filtration device using irregular porous hollow fiber membrane, and filtration using irregular porous hollow fiber membrane Method |
| CN206767710U (en) * | 2017-05-17 | 2017-12-19 | 林扬泉 | A kind of water purifier |
| CN209759221U (en) * | 2018-02-05 | 2019-12-10 | 河北水利电力学院 | Domestic sewage treatment environment-friendly device |
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2018
- 2018-02-05 CN CN201810112157.1A patent/CN108117237B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002045880A (en) * | 2000-08-04 | 2002-02-12 | Iida Biken:Kk | Contact material for river water purifying equipment |
| CN2811275Y (en) * | 2005-08-17 | 2006-08-30 | 长春立源水处理技术有限责任公司 | Axial flow self-oxygenation active sludge aerator |
| CN106927603A (en) * | 2017-05-16 | 2017-07-07 | 张阳康 | Novel all-in-one domestic sewage processing system |
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Effective date of registration: 20221019 Address after: Room 2202, 22 / F, Wantong building, No. 3002, Sungang East Road, Sungang street, Luohu District, Shenzhen City, Guangdong Province Patentee after: Shenzhen dragon totem technology achievement transformation Co.,Ltd. Address before: 061001 No.1, Chongqing Road, Cangzhou City, Hebei Province Patentee before: HEBEI University OF WATER RESOURCES AND ELECTRIC ENGINEERING |
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