CN113072201A - Environmental engineering sewage treatment plant - Google Patents
Environmental engineering sewage treatment plant Download PDFInfo
- Publication number
- CN113072201A CN113072201A CN202110334615.8A CN202110334615A CN113072201A CN 113072201 A CN113072201 A CN 113072201A CN 202110334615 A CN202110334615 A CN 202110334615A CN 113072201 A CN113072201 A CN 113072201A
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- box
- fixedly connected
- air
- filter
- filtering
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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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)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to the technical field of sewage treatment, in particular to an environmental engineering sewage treatment device, which comprises a shell, wherein the top of the shell is fixedly connected with a water inlet pipe, the lower side of the water inlet pipe is provided with a first filtering mechanism, the lower side of the first filtering mechanism is provided with a filtering box, the left side and the right side of the filtering box are respectively provided with a supporting mechanism which is in sliding connection with the shell, the supporting mechanisms are connected with a driving mechanism arranged at the inner side of the shell, and a second filtering mechanism is arranged between the driving mechanism and the filtering box. And the filter box can move up and down repeatedly, thereby enhancing the purification capacity of the device.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an environmental engineering sewage treatment device.
Background
Environmental engineering is a branch of environmental science, mainly studies how to protect and reasonably utilize natural resources, solves increasingly serious environmental problems by scientific means, improves environmental quality, promotes environmental protection and social development, and the sewage treatment device is a device for treating domestic sewage and industrial wastewater to change the domestic sewage and the industrial wastewater into useful water sources, prevents sewage and pollutants from directly flowing into water areas, has great effect on improving ecological environment, and has higher and higher requirements on natural environment along with the continuous improvement of living standard of people, so the requirements of people on the sewage treatment device are higher and higher.
Although current sewage treatment plant simple structure, convenient operation, the function singleness can not carry out the intensive mixing with sewage and treatment medicament, leads to sewage treatment effect general, owing to can't sieve sewage, leads to the solid waste in the sewage and sewage can't obtain the separation moreover for sewage treatment becomes very difficult, consequently, to above current situation, urgent need develop an environmental engineering sewage treatment plant to overcome not enough in the current practical application.
Disclosure of Invention
The invention aims to provide an environmental engineering sewage treatment device to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an environmental engineering sewage treatment plant, includes the casing, casing top fixed connection is provided with the inlet tube, the inlet tube downside is provided with first filtering mechanism, first filtering mechanism downside is provided with the filter box, the filter box left and right sides all is provided with the supporting mechanism with casing sliding connection, supporting mechanism is connected with the actuating mechanism who sets up at the casing inboard, be provided with second filtering mechanism between actuating mechanism and the filter box.
As a further scheme of the invention: first filtering mechanism includes that sliding connection sets up the filter plate in the casing inboard, the filter plate inboard is provided with leads the mouth of a river, it is provided with the filter screen to lead the inboard fixed connection in mouth of a river, the equal fixed connection in both ends top is provided with the slide bar about the filter plate, slide bar top fixed connection is provided with the limiting plate, limiting plate and fixed connection set up the dead lever sliding connection at the inboard top of casing, fixed connection is provided with the spring between limiting plate top and the dead lever.
As a further scheme of the invention: the supporting mechanism includes that fixed connection sets up the connecting box in the filter box left and right sides, the connecting box inboard is provided with the cavity, the connecting box downside is provided with the air duct with casing fixed connection, the air duct input is connected with the mechanism of admitting air that sets up in the casing outside, air duct top fixed connection is provided with the stay tube with the cavity intercommunication, stay tube and connecting box sliding connection, the cavity passes through the gas-supply pipe and is connected with the air guide groove that sets up at the filter box tank wall inboard, fixed connection is provided with a plurality of outlet ducts of being connected with the air guide groove on the filter box inboard tank wall, the inboard fixed connection of outlet duct is provided with the check valve.
As a further scheme of the invention: air inlet mechanism includes that fixed connection sets up the inlet box at the casing rear side, the inboard fixed connection of inlet box is provided with the dust removal case, fixed connection is provided with the pipe between dust removal case top and the inlet box, the connection can be dismantled to dust removal incasement side is provided with a plurality of dust removal nets, and is adjacent be provided with the sterilamp with dust removal case bolted connection between the dust removal net, dust removal case downside is provided with the air pump with inlet box bolted connection, the air pump output passes through the intake pipe and is connected with the air duct.
As a further scheme of the invention: the driving mechanism comprises a clapboard fixedly connected and arranged at the bottom of the inner side of the shell, a motor connected with the shell through a bolt is arranged at the lower side of the clapboard, the left output end of the motor is connected with the incomplete gear, the left side of the incomplete gear is provided with a rotating rod which is rotationally connected with the shell, the outer sides of the upper end and the lower end of the rotating rod are fixedly connected with transmission gears which are meshed and connected with the incomplete gear, the front side and the rear side of the rotating rod are both provided with movable blocks which are connected with the shell in a sliding way, the inner side of each movable block is connected with a guide rod which is fixedly connected with the shell in a sliding way, the movable block is close to one side of the rotating rod and is fixedly connected with a rack, the rotating rod is fixedly connected with a gear meshed with the rack, the top end of the movable block is hinged with a connecting rod, and the other end of the connecting rod is hinged with a connecting block arranged at the bottom of the connecting box.
As a further scheme of the invention: the bull stick is located the filter box inside part outside fixed connection and is provided with a plurality of puddlers, and is adjacent the joint is provided with the filter frame between the puddler.
As a further scheme of the invention: the second filtering mechanism comprises a purifying box fixedly connected with the top of the partition plate, the top of the purifying box is fixedly connected with a connecting pipe, the outer side of the connecting pipe is slidably connected with a fixed pipe fixedly connected with the filtering box, the inner side of the purifying box is connected with an active carbon filter layer in a clamped mode, and an outlet pipe fixedly connected with the purifying box is arranged on the lower side of the active carbon filter layer.
Compared with the prior art, the invention has the beneficial effects that:
1. by arranging the first filtering mechanism, most of impurities in the sewage can be filtered by utilizing the filter screen arranged on the inner side of the water guide port, meanwhile, the filter screen is convenient for people to clean due to the fact that the filter board is arranged on the top end of the inner side of the shell, and by arranging the second filtering mechanism, the filtering effect of the device on the sewage can be further enhanced;
2. the supporting mechanism is arranged, so that air can be blown into the filter box, the sewage in the filter box is in more sufficient contact with the filter frame arranged on the inner side of the filter box, the filtering effect of equipment on the sewage is improved, the air can be filtered by the air inlet mechanism, and the sewage is prevented from being polluted again by impurities in the air;
3. through setting up actuating mechanism, the motor rotates through driving the bull stick, not only can purify the inboard sewage of filter box, can make the filter box carry out up-and-down motion moreover to reinforcing device's purification ability, and the filter box can strike the filter plate at the removal in-process, thereby improves the filtration efficiency of filter plate.
Drawings
FIG. 1 is a schematic structural diagram of an environmental engineering sewage treatment plant.
Fig. 2 is a rear view of the environmental engineering sewage treatment apparatus.
FIG. 3 is a top view of a driving mechanism in the sewage treatment plant of environmental engineering.
FIG. 4 is a schematic structural view of a stirring rod in the sewage treatment device of environmental engineering.
In the figure: 1-shell, 2-water inlet pipe, 3-filter plate, 4-water guide opening, 5-filter screen, 6-slide bar, 7-limit plate, 8-fixing bar, 9-spring, 10-filter box, 11-partition plate, 12-rotating bar, 13-stirring bar, 14-filter frame, 15-connecting box, 16-fixing pipe, 17-connecting pipe, 18-purifying box, 19-active carbon filter layer, 20-water outlet pipe, 21-motor, 22-incomplete gear, 23-transmission gear, 24-connecting block, 25-connecting rod, 26-air guide pipe, 27-supporting pipe, 28-cavity, 29-air guide pipe, 30-air guide groove, 31-air outlet pipe, 32-pushing block, 33-air inlet box, 34-a dust removal box, 35-a dust removal net, 36-a disinfection lamp, 37-an air pump, 38-an air inlet pipe, 39-a gear, 40-a movable block and 41-a guide rod.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Example 1
Referring to fig. 1-4, in an embodiment of the present invention, an environmental engineering sewage treatment apparatus includes a housing 1, a water inlet pipe 2 is fixedly connected to the top of the housing 1, a first filtering mechanism is disposed on the lower side of the water inlet pipe 2, a filtering box 10 is disposed on the lower side of the first filtering mechanism, supporting mechanisms slidably connected to the housing 1 are disposed on both left and right sides of the filtering box 10, the supporting mechanisms are connected to a driving mechanism disposed on the inner side of the housing 1, and a second filtering mechanism is disposed between the driving mechanism and the filtering box 10.
Example 2
In this embodiment, first filter mechanism includes that sliding connection sets up the filter plate 3 in 1 inboard of casing, 3 inboard of filter plate is provided with leads mouth of a river 4, it is provided with filter screen 5 to lead the inboard fixed connection in mouth of a river 4, the equal fixed connection in both ends top is provided with slide bar 6 about filter plate 3, the 6 top fixed connection of slide bar is provided with limiting plate 7, limiting plate 7 sets up the 8 sliding connection of dead lever at 1 inboard top of casing with fixed connection, fixed connection is provided with spring 9 between 7 tops of limiting plate and the dead lever 8, and through setting up first filter mechanism, utilize to set up at the inboard filter screen 5 of water guide mouth 4, can realize filtering most impurity in the sewage, simultaneously because filter plate 3 sets up on 1 inboard top of casing, make things convenient for people to clear up filter screen 5.
In this embodiment, the supporting mechanism includes a connecting box 15 fixedly connected to the left and right sides of the filtering box 10, a cavity 28 is disposed inside the connecting box 15, an air duct 26 fixedly connected to the casing 1 is disposed on the lower side of the connecting box 15, an input end of the air duct 26 is connected to an air inlet mechanism disposed outside the casing 1, a supporting tube 27 communicated with the cavity 28 is fixedly connected to the top of the air duct 26, the supporting tube 27 is slidably connected to the connecting box 15, the cavity 28 is connected to an air guide groove 30 disposed inside the wall of the filtering box 10 through an air duct 29, a plurality of air outlet tubes 31 connected to the air guide groove 30 are fixedly connected to the wall inside the filtering box 10, a check valve is fixedly connected to the inside of the air outlet tubes 31, and by disposing the supporting mechanism, air can be blown into the filtering box 10, so that the sewage inside the filtering box 10 can be more fully contacted with the filtering frame 14 disposed inside the filtering box 10, thereby improving the filtering effect of the equipment on the sewage.
In this embodiment, air inlet mechanism includes that fixed connection sets up the inlet box 33 at 1 rear side of casing, the inboard fixed connection of inlet box 33 is provided with dust removal case 34, fixed connection is provided with the pipe between 34 tops of dust removal case and the inlet box 33, the inboard connection of dismantling of dust removal case 34 is provided with a plurality of dust removal net 35, and is adjacent be provided with the sterilamp 36 with 34 bolted connection of dust removal case between the net 35 of dust removal, 34 downside of dust removal case is provided with the air pump 37 with inlet box 33 bolted connection, the air pump 37 output passes through intake pipe 38 and is connected with air duct 26, through setting up air inlet mechanism, can filter the air, avoids the impurity in the air to cause the pollution to sewage once more.
In the embodiment, the driving mechanism comprises a partition plate 11 fixedly connected and arranged at the bottom of the inner side of the shell 1, a motor 21 connected with the shell 1 through a bolt is arranged at the lower side of the partition plate 11, the left output end of the motor 21 is connected with an incomplete gear 22, a rotating rod 12 connected with the shell 1 in a rotating manner is arranged at the left side of the incomplete gear 22, a transmission gear 23 connected with the incomplete gear 22 in a meshing manner is fixedly connected at the outer sides of the upper end and the lower end of the rotating rod 12, movable blocks 40 connected with the shell 1 in a sliding manner are arranged at the front side and the rear side of the rotating rod 12, a guide rod 41 fixedly connected with the shell 1 is arranged at the inner side of each movable block 40 in a sliding manner, a rack is fixedly connected at one side of each movable block 40 close to the rotating rod 12, a gear 39 connected with the rack in a, the connecting rod 25 other end is articulated with the connecting block 24 that fixed connection set up in connecting box 15 bottom, and through setting up actuating mechanism, motor 21 rotates through driving bull stick 12, not only can purify the inboard sewage of filter box 10, can make filter box 10 carry out up-and-down motion moreover to the purifying power of reinforcing means, and filter box 10 can strike filter plate 3 at the removal in-process, thereby improves the filtration efficiency of filter plate 3.
In this embodiment, the rotating rod 12 is fixedly connected with a plurality of stirring rods 13 outside the inner side portion of the filter box 10, and adjacent to the stirring rods 13, a filter frame 14 is clamped between the stirring rods 13.
In this embodiment, the second filtering mechanism includes that fixed connection sets up the purifying box 18 at baffle 11 top, purifying box 18 top fixed connection is provided with connecting pipe 17, connecting pipe 17 outside sliding connection is provided with the fixed pipe 16 with filtering box 10 fixed connection, the inboard joint of purifying box 18 is provided with activated carbon filter layer 19, activated carbon filter layer 19 downside is provided with outlet pipe 20 with purifying box 18 fixed connection, through setting up the second filtering mechanism, can further strengthen the filter effect of device to sewage.
In this embodiment, the top of the connection box 1 is fixedly connected with a push block 32.
The working principle of the invention is as follows: by arranging the first filtering mechanism, most impurities in the sewage can be filtered by utilizing the filter screen 5 arranged at the inner side of the water guide port 4, meanwhile, the filter plate 3 is arranged at the top end of the inner side of the shell 1, so that people can conveniently clean the filter screen 5, and by arranging the supporting mechanism, the inside of the filter box 10 can be blown, so that the sewage at the inner side of the filter box 10 is in more sufficient contact with the filter frame 14 arranged at the inner side of the filter box 10, thereby improving the filtering effect of the equipment on the sewage, the air inlet mechanism can filter the air, avoiding the pollution of the impurities in the air to the sewage again, the motor 21 drives the rotating rod 12 to rotate, thereby not only purifying the sewage at the inner side of the filter box 10, but also enabling the filter box 10 to do up-and-down repeated motion, thereby enhancing the purifying capacity of the device, and the filter box 10 can knock the filter plate 3 in the moving process, thereby improving the filtering efficiency, through setting up second filter mechanism, can further strengthen the filter effect of device to sewage.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (7)
1. The utility model provides an environmental engineering sewage treatment plant, includes casing (1), its characterized in that, casing (1) top fixed connection is provided with inlet tube (2), inlet tube (2) downside is provided with first filtering mechanism, first filtering mechanism downside is provided with filter box (10), the filter box (10) left and right sides all is provided with the supporting mechanism with casing (1) sliding connection, supporting mechanism is connected with the actuating mechanism who sets up at casing (1) inboard, be provided with second filtering mechanism between actuating mechanism and filter box (10).
2. The environmental engineering sewage treatment device according to claim 1, wherein the first filtering mechanism comprises a filter plate (3) slidably connected and arranged on the inner side of the housing (1), a water guide opening (4) is arranged on the inner side of the filter plate (3), a filter screen (5) is fixedly connected to the inner side of the water guide opening (4), a slide rod (6) is fixedly connected to the top of each of the left end and the right end of the filter plate (3), a limiting plate (7) is fixedly connected to the top of the slide rod (6), the limiting plate (7) is slidably connected to a fixing rod (8) fixedly connected and arranged on the inner side of the housing (1), and a spring (9) is arranged between the top of the limiting plate (7) and the fixing rod (8).
3. The environmental engineering sewage treatment plant according to claim 2, wherein the support mechanism comprises a connection box (15) fixedly connected and arranged at the left and right sides of the filter box (10), a cavity (28) is arranged at the inner side of the connection box (15), an air duct (26) fixedly connected with the shell (1) is arranged at the lower side of the connection box (15), the input end of the air duct (26) is connected with an air inlet mechanism arranged at the outer side of the shell (1), a support tube (27) communicated with the cavity (28) is fixedly connected at the top of the air duct (26), the support tube (27) is slidably connected with the connection box (15), the cavity (28) is connected with an air guide groove (30) arranged at the inner side of the box wall of the filter box (10) through an air pipe (29), a plurality of air outlet pipes (31) connected with the air guide groove (30) are fixedly connected on the box wall at the inner side of the filter box (10), and a check valve is fixedly connected to the inner side of the air outlet pipe (31).
4. The environmental engineering sewage treatment device according to claim 3, wherein the air inlet mechanism comprises an air inlet box (33) fixedly connected and arranged at the rear side of the housing (1), a dust removing box (34) is fixedly connected and arranged at the inner side of the air inlet box (33), a guide pipe is fixedly connected and arranged between the top end of the dust removing box (34) and the air inlet box (33), a plurality of dust removing nets (35) are detachably connected and arranged at the inner side of the dust removing box (34), a disinfection lamp (36) connected with the dust removing box (34) through bolts is arranged between the adjacent dust removing nets (35), an air pump (37) connected with the air inlet box (33) through bolts is arranged at the lower side of the dust removing box (34), and the output end of the air pump (37) is connected with the air guide pipe (26) through an air.
5. The environmental engineering sewage treatment device according to claim 4, wherein the driving mechanism comprises a partition plate (11) fixedly connected and arranged at the bottom of the inner side of the housing (1), a motor (21) bolted with the housing (1) is arranged at the lower side of the partition plate (11), the left output end of the motor (21) is connected with an incomplete gear (22), a rotating rod (12) rotatably connected with the housing (1) is arranged at the left side of the incomplete gear (22), transmission gears (23) meshed and connected with the incomplete gear (22) are fixedly connected at the outer sides of the upper end and the lower end of the rotating rod (12), movable blocks (40) slidably connected with the housing (1) are arranged at the front side and the rear side of the rotating rod (12), a guide rod (41) fixedly connected with the housing (1) is arranged at the inner side of the movable block (40) in a sliding manner, and a rack is fixedly connected at one side of the movable block (40) close to the rotating rod (, the outer side of the rotating rod (12) is fixedly connected with a gear (39) connected with a rack in a meshed mode, the top ends of the movable blocks (40) are hinged to form a connecting rod (25), and the other end of the connecting rod (25) is hinged to a connecting block (24) arranged at the bottom of the connecting box (15) in a fixed connection mode.
6. The environmental engineering sewage treatment unit according to claim 5, wherein the rotating rod (12) is fixedly connected with a plurality of stirring rods (13) at the outer side of the inner side part of the filtering box (10), and a filtering frame (14) is clamped between the adjacent stirring rods (13).
7. The environmental engineering sewage treatment device according to claim 5, wherein the second filtering mechanism comprises a purifying box (18) fixedly connected and arranged on the top of the partition plate (11), a connecting pipe (17) is fixedly connected and arranged on the top of the purifying box (18), a fixing pipe (16) fixedly connected with the filtering box (10) is slidably connected and arranged on the outer side of the connecting pipe (17), an activated carbon filtering layer (19) is clamped and arranged on the inner side of the purifying box (18), and a water outlet pipe (20) fixedly connected with the purifying box (18) is arranged on the lower side of the activated carbon filtering layer (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110334615.8A CN113072201A (en) | 2021-03-29 | 2021-03-29 | Environmental engineering sewage treatment plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110334615.8A CN113072201A (en) | 2021-03-29 | 2021-03-29 | Environmental engineering sewage treatment plant |
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| Publication Number | Publication Date |
|---|---|
| CN113072201A true CN113072201A (en) | 2021-07-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110334615.8A Pending CN113072201A (en) | 2021-03-29 | 2021-03-29 | Environmental engineering sewage treatment plant |
Country Status (1)
| Country | Link |
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| CN (1) | CN113072201A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114014478A (en) * | 2021-11-15 | 2022-02-08 | 中清生态环境(宁波)有限公司 | Integrated equipment for advanced wastewater treatment |
| CN114477659A (en) * | 2022-03-15 | 2022-05-13 | 河南应用技术职业学院 | Online recovery processing device of chemical industry waste liquid |
| CN114671502A (en) * | 2022-03-02 | 2022-06-28 | 王金业 | Energy-concerving and environment-protective type municipal sewage treatment plant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005144241A (en) * | 2003-11-11 | 2005-06-09 | Sumitomo Electric Fine Polymer Inc | Filtration device |
| CN107596777A (en) * | 2017-11-01 | 2018-01-19 | 安徽上造智能设备科技有限公司 | A kind of sewage-treatment plant |
| CN111646527A (en) * | 2020-05-28 | 2020-09-11 | 郝运康 | Domestic sewage purification treatment device |
| CN112028395A (en) * | 2020-08-25 | 2020-12-04 | 河南衡鼎计量检测技术有限公司 | Water pollutant treatment device |
-
2021
- 2021-03-29 CN CN202110334615.8A patent/CN113072201A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005144241A (en) * | 2003-11-11 | 2005-06-09 | Sumitomo Electric Fine Polymer Inc | Filtration device |
| CN107596777A (en) * | 2017-11-01 | 2018-01-19 | 安徽上造智能设备科技有限公司 | A kind of sewage-treatment plant |
| CN111646527A (en) * | 2020-05-28 | 2020-09-11 | 郝运康 | Domestic sewage purification treatment device |
| CN112028395A (en) * | 2020-08-25 | 2020-12-04 | 河南衡鼎计量检测技术有限公司 | Water pollutant treatment device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114014478A (en) * | 2021-11-15 | 2022-02-08 | 中清生态环境(宁波)有限公司 | Integrated equipment for advanced wastewater treatment |
| CN114671502A (en) * | 2022-03-02 | 2022-06-28 | 王金业 | Energy-concerving and environment-protective type municipal sewage treatment plant |
| CN114477659A (en) * | 2022-03-15 | 2022-05-13 | 河南应用技术职业学院 | Online recovery processing device of chemical industry waste liquid |
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