CN113307429A - Environment-friendly sewage treatment equipment and using method thereof - Google Patents
Environment-friendly sewage treatment equipment and using method thereof Download PDFInfo
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- CN113307429A CN113307429A CN202110670364.0A CN202110670364A CN113307429A CN 113307429 A CN113307429 A CN 113307429A CN 202110670364 A CN202110670364 A CN 202110670364A CN 113307429 A CN113307429 A CN 113307429A
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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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- C02F1/5281—Installations for water purification using chemical agents
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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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
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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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)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention provides environment-friendly sewage treatment equipment and a using method thereof, and relates to the field of sewage treatment. This environmental protection sewage treatment device, the on-line screen storage device comprises a base, upper end one side fixedly connected with sewage tank of base, the middle part upper end fixedly connected with sludge impoundment of base, sludge impoundment's top is provided with the stirring pond, one side of stirring pond is provided with the separator tube, sewage tank's inside is provided with the room of keeping in and the aeration room, be provided with ceramic filter between room of keeping in and the aeration room, sewage tank's upper end fixedly connected with inlet tube, and the aeration room of inlet tube intercommunication, the inside of aeration room is provided with the trachea, the lateral wall fixedly connected with third pipe of separator tube, and the third pipe is along separator tube lateral wall tangent line connection, the inner wall fixedly connected with spiral line and the spiral line of separator tube are located one side of third pipe, the other end fixedly connected with outlet pipe of separator tube. The invention has compact structure and high processing efficiency.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to environment-friendly sewage treatment equipment and a using method thereof.
Background
Sewage treatment: the sewage is purified to reach the water quality requirement of being discharged into a certain water body or being reused. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people.
The sewage treatment means comprises filtration, aeration, reagent addition, sedimentation, micro-electrolysis, adsorption and the like, and different treatment means are combined according to different types of sewage to realize the purification of the sewage.
The applicant finds that a Chinese patent discloses a sewage treatment device through retrieval when applying the invention, the application number of the sewage treatment device is 201910720039.3, the sewage is precipitated by a main water tank, the precipitated sewage flows to a sewage treatment tank through a water distribution system, a filtering component in the sewage treatment tank filters the sewage, a sediment cleaning component in the water tank cleans sediment left by the sewage, and the device separates solid and liquid of the sewage and respectively cleans the sewage, so that finally discharged water meets the discharge requirement. This patent employs natural settling and requires periodic cleaning of the filter assembly.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides environment-friendly sewage treatment equipment and a using method thereof, and solves the problems that the existing sewage treatment equipment is low in treatment efficiency and needs to clean a filtering component regularly.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the environment-friendly sewage treatment equipment comprises a base, wherein a sewage tank is fixedly connected to one side of the upper end of the base, a sludge tank is fixedly connected to the upper end of the middle part of the base, a stirring tank is arranged above the sludge tank, and a separation pipe is arranged on one side of the stirring tank;
a temporary storage chamber and an aeration chamber are arranged in the sewage tank, a ceramic filter plate is arranged between the temporary storage chamber and the aeration chamber, the upper end of the sewage tank is fixedly connected with a water inlet pipe, the water inlet pipe is communicated with the aeration chamber, an air pipe is arranged in the aeration chamber, and one end of the air pipe extends out of the sewage tank;
the sludge tank is divided into two chambers in half, the two chambers are provided with clapboards, one side of each clapboard is fixedly connected with a second pump, and the upper end of each second pump is fixedly connected with a first return pipe and a second return pipe respectively;
the lateral wall fixedly connected with third pipe of separator tube, and the third pipe is being connected along separator tube lateral wall tangent line, the inner wall fixedly connected with spiral line and the spiral line of separator tube are located one side of third pipe, the other end fixedly connected with outlet pipe of separator tube, the lateral wall fixedly connected with second pipe of separator tube, the second pipe is located one side of outlet pipe, the other end of second pipe is located the inside in sludge impoundment.
Preferably, the other end of the second return pipe is connected with the water inlet pipe, the upper end of the sewage tank is fixedly connected with a pressure release valve, and the pressure release valve is communicated with the aeration chamber.
Preferably, the lateral wall fixedly connected with first pipe of sewage case, first pipe and aeration chamber intercommunication, the other end and the sludge impoundment of first pipe are connected, fixedly connected with first valve on the first pipe.
Preferably, the temporary storage chamber is internally provided with a third pump, the upper end of the third pump is fixedly connected with a fourth pipe, the other end of the fourth pipe is positioned above the stirring pool, and one end of the first return pipe is positioned above the stirring pool.
Preferably, a driving motor is arranged above the stirring pool, a motor shaft extends from the lower end of the driving motor, and a stirring rod is fixedly connected to the lower end of the motor shaft.
Preferably, the third pipe is connected to the middle part of the stirring tank, and the middle part of the third pipe is fixedly connected with the first pump.
Preferably, the stirring pond be the toper, and the lower extreme fixedly connected with second valve in stirring pond, the lower extreme fixedly connected with support column in stirring pond, the lower extreme and the base fixed connection of support column.
Preferably, the use method of the environment-friendly sewage treatment equipment comprises the following steps:
sewage enters the aeration chamber through the water inlet pipe, air is pumped into the aeration chamber through the air pipe to realize aeration treatment, meanwhile, the arranged pressure relief valve can keep a certain pressure in the aeration chamber, and under the action of the pressure, water in the aeration chamber passes through the ceramic filter plate and enters the temporary storage chamber;
the third pump works, the fourth pipe pumps the mixture into the stirring pool, a flocculating agent and a disinfectant are added into the stirring pool, the driving motor is started, and the stirring rod rotates to promote the full mixing of the medicament and the water;
the first pump works, the third pipe pumps into the separation pipe, because the third pipe is in the tangential direction of the sidewall of the separation pipe, and under the effects of the spiral line, water moves spirally in the separation pipe, and the sediment in the water sticks to the inner wall of the separation pipe under the effect of centrifugal force, the water in the middle of the separation pipe is clarified, and is discharged from the water outlet pipe, thus realizing sewage purification;
along with the increase of solid impurities in the aeration chamber, the first valve needs to be opened at regular time, sewage enters the sludge tank for sedimentation, and water after sedimentation flows back to the aeration chamber for continuous treatment through the second pump and the second return pipe;
along with the work in stirring pond, also can subside solid impurity in the bottom in stirring pond, need regularly open the second valve and discharge fixed impurity into the sludge impoundment, the while separator tube also gets into the sludge impoundment through the mud water of second pipe discharge, and both all get into the stirring pond once more through second pump and first back flow pipe, and first back flow pipe and the equal independent circulation of second back flow.
(III) advantageous effects
The invention provides an environment-friendly sewage treatment device and a using method thereof. The method has the following beneficial effects:
1. according to the invention, the components of the aeration function and the filtering function are combined, and the stirring tank is arranged above the sludge tank, so that the device is more compact, and the miniaturization of the device is facilitated.
2. According to the invention, the aeration chamber is in a sealed state, and the aeration chamber can be controlled to have certain pressure intensity only by exhausting through the pressure release valve, so that the filtering speed of the ceramic filter plate can be improved, and meanwhile, in the aeration process, water vapor impacts the ceramic filter plate, so that the cleaning effect is realized, and the blockage is prevented.
3. The invention is provided with the separation pipe, water can spirally move in the separation pipe, solid impurities lean against the inner wall of the separation pipe under the action of centrifugal force, and clarified water is sent out from the water outlet pipe.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 5 is a schematic cross-sectional view of a separator tube of the present invention.
Wherein, 1, a base; 2. a sewage tank; 3. a first valve; 4. a first tube; 5. a sludge tank; 6. a stirring tank; 7. a second tube; 8. a water outlet pipe; 9. a support pillar; 10. a separation tube; 11. a first pump; 12. a third tube; 13. a stirring rod; 14. a drive motor; 15. a first return pipe; 16. a temporary storage chamber; 17. a fourth tube; 18. a second return pipe; 19. an air tube; 20. a water inlet pipe; 21. a pressure relief valve; 22. a partition plate; 23. a second pump; 24. a third pump; 25. a second valve; 26. a ceramic filter plate; 27. an aeration chamber; 28. and (4) spiral threads.
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.
Example (b):
as shown in fig. 1 to 5, an embodiment of the present invention provides an environment-friendly sewage treatment apparatus, which includes a base 1, a sewage tank 2 is fixedly connected to one side of an upper end of the base 1 for aeration and filtration, so that the apparatus is more compact, a sludge tank 5 is fixedly connected to an upper end of a middle portion of the base 1 for sedimentation treatment of sludge, a stirring tank 6 is disposed above the sludge tank 5, a chemical, such as a disinfectant or a flocculant, is added into the stirring tank 6 for purification of water, and a separation pipe 10 is disposed to one side of the stirring tank 6, so that solid impurities and water can be rapidly separated, and the speed of sewage treatment can be increased compared with conventional natural sedimentation.
The sewage tank 2 is internally provided with a temporary storage chamber 16 and an aeration chamber 27, a ceramic filter plate 26 is arranged between the temporary storage chamber 16 and the aeration chamber 27, the upper end of the sewage tank 2 is fixedly connected with a water inlet pipe 20, the water inlet pipe 20 is communicated with the aeration chamber 27, an air pipe 19 is arranged in the aeration chamber 27, one end of the air pipe 19 extends out of the sewage tank 2, air is pumped into the air pipe 19, the aeration treatment is realized, the ceramic filter plate 26 can be washed away, the blockage of the ceramic filter plate 26 is avoided, the other end of a second return pipe 18 is connected with the water inlet pipe 20, the upper end of the sewage tank 2 is fixedly connected with a pressure release valve 21, the pressure release valve 21 can keep the aeration chamber 27 to have certain pressure, the filtering speed of the ceramic filter plate 26 can be improved, the pressure release valve 21 is communicated with the aeration chamber 27, the side wall of the sewage tank 2 is fixedly connected with a first pipe 4, and the first pipe 4 is communicated with the aeration chamber 27, the other end and the sludge impoundment 5 of first pipe 4 are connected, and the first valve 3 of fixedly connected with on the first pipe 4, the inside of the room 16 of keeping in is provided with third pump 24, and the upper end fixedly connected with fourth pipe 17 of third pump 24, the other end of fourth pipe 17 are located the top of stirring pond 6, and the one end of first return pipe 15 is located the top of stirring pond 6.
The sludge pond 5 is divided into two chambers in half, the two chambers are provided with partition plates 22, one side of each partition plate 22 is fixedly connected with a second pump 23, sewage on the upper portion overflows the partition plates 22 and enters the second pumps 23 to facilitate the isolation of sediments, and the upper ends of the second pumps 23 are fixedly connected with a first return pipe 15 and a second return pipe 18 respectively.
Lateral wall fixedly connected with third pipe 12 of separator tube 10, and third pipe 12 is connected along separator tube 10 lateral wall tangent line, third pipe 12 is connected in the middle part of stirring pond 6, the first pump 11 of middle part fixedly connected with of third pipe 12, improve the velocity of flow that sewage got into separator tube 10, be used for improving the separation effect, the inner wall fixedly connected with spiral line 28 and the spiral line 28 of separator tube 10 are located one side of third pipe 12, the other end fixedly connected with outlet pipe 8 of separator tube 10, the lateral wall fixedly connected with second pipe 7 of separator tube 10, second pipe 7 is located one side of outlet pipe 8, the other end of second pipe 7 is located the inside of sludge impoundment 5.
The top of stirring pond 6 is provided with driving motor 14, and the lower extreme of driving motor 14 extends and is provided with the motor shaft, and the lower extreme fixedly connected with puddler 13 of motor shaft, and stirring pond 6 be the toper, and stirring pond 6's lower extreme fixedly connected with second valve 25, stirring pond 6's lower extreme fixedly connected with support column 9, the lower extreme and the base 1 fixed connection of support column 9.
The working principle is as follows: sewage enters an aeration chamber 27 through a water inlet pipe 20, air is pumped into the aeration chamber 27 through an air pipe 19 to realize aeration treatment, meanwhile, a pressure relief valve 21 is arranged to keep a certain pressure in the aeration chamber 27, and under the action of the pressure, water in the aeration chamber 27 passes through a ceramic filter plate 26 and enters a temporary storage chamber 16;
the third pump 24 works, the water is pumped into the stirring pool 6 through the fourth pipe 17, a flocculating agent and a disinfectant are added into the stirring pool 6, the driving motor 14 is started, and the stirring rod 13 rotates to promote the full mixing of the medicament and the water;
the first pump 11 works, the third pipe 12 is pumped into the separation pipe 10, because the third pipe 12 is in the tangential direction of the side wall of the separation pipe 10 and under the action of the spiral threads 28, water spirally moves in the separation pipe 10, and sediments in the water attach to the inner wall of the separation pipe 10 under the action of centrifugal force, the water in the middle of the separation pipe 10 is clarified and discharged from the water outlet pipe 8, so that sewage purification is realized;
as the solid impurities in the aeration chamber 27 increase, the first valve 3 needs to be opened at regular time, the sewage enters the sludge tank 5 for sedimentation, and the settled water flows back to the aeration chamber 27 through the second pump 23 and the second return pipe 18 for continuous treatment;
along with the work of the stirring tank 6, solid impurities can be settled at the bottom of the stirring tank 6, the second valve 25 needs to be opened periodically to discharge the fixed impurities into the sludge tank 5, simultaneously, muddy water discharged from the separation pipe 10 through the second pipe 7 also enters the sludge tank 5, and both the muddy water and the fixed impurities enter the stirring tank 6 again through the second pump 23 and the first return pipe 15, and the first return pipe 15 and the second return pipe 18 are both circulated independently, so that the two kinds of sludge can be treated respectively.
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 (8)
1. Environmental protection sewage treatment device, including base (1), its characterized in that: a sewage tank (2) is fixedly connected to one side of the upper end of the base (1), a sludge tank (5) is fixedly connected to the upper end of the middle part of the base (1), a stirring tank (6) is arranged above the sludge tank (5), and a separation pipe (10) is arranged on one side of the stirring tank (6);
a temporary storage chamber (16) and an aeration chamber (27) are arranged in the sewage tank (2), a ceramic filter plate (26) is arranged between the temporary storage chamber (16) and the aeration chamber (27), a water inlet pipe (20) is fixedly connected to the upper end of the sewage tank (2), the water inlet pipe (20) is communicated with the aeration chamber (27), an air pipe (19) is arranged in the aeration chamber (27), and one end of the air pipe (19) extends out of the sewage tank (2);
the sludge tank (5) is divided into two chambers in half, the two chambers are provided with partition plates (22), one sides of the partition plates (22) are fixedly connected with second pumps (23), and the upper ends of the second pumps (23) are fixedly connected with a first return pipe (15) and a second return pipe (18) respectively;
the lateral wall fixedly connected with third pipe (12) of separator tube (10), and third pipe (12) are connected along separator tube (10) lateral wall tangent line, the inner wall fixedly connected with spiral line (28) and spiral line (28) of separator tube (10) are located one side of third pipe (12), the other end fixedly connected with outlet pipe (8) of separator tube (10), the lateral wall fixedly connected with second pipe (7) of separator tube (10), second pipe (7) are located one side of outlet pipe (8), the other end of second pipe (7) is located the inside of sludge impoundment (5).
2. The environmental-friendly sewage treatment apparatus according to claim 1, wherein: the other end of the second return pipe (18) is connected with the water inlet pipe (20), the upper end of the sewage tank (2) is fixedly connected with a pressure release valve (21), and the pressure release valve (21) is communicated with the aeration chamber (27).
3. The environmental-friendly sewage treatment apparatus according to claim 1, wherein: the sewage tank is characterized in that a first pipe (4) is fixedly connected to the side wall of the sewage tank (2), the first pipe (4) is communicated with an aeration chamber (27), the other end of the first pipe (4) is connected with a sludge tank (5), and a first valve (3) is fixedly connected to the first pipe (4).
4. The environmental-friendly sewage treatment apparatus according to claim 1, wherein: the inside of temporary storage room (16) is provided with third pump (24), the upper end fixedly connected with fourth pipe (17) of third pump (24), the other end of fourth pipe (17) is located the top of stirring pond (6), the one end of first return tube (15) is located the top of stirring pond (6).
5. The environmental-friendly sewage treatment apparatus according to claim 1, wherein: a driving motor (14) is arranged above the stirring pool (6), a motor shaft extends from the lower end of the driving motor (14), and a stirring rod (13) is fixedly connected to the lower end of the motor shaft.
6. The environmental-friendly sewage treatment apparatus according to claim 1, wherein: the third pipe (12) is connected to the middle of the stirring pool (6), and the middle of the third pipe (12) is fixedly connected with a first pump (11).
7. The environmental-friendly sewage treatment apparatus according to claim 1, wherein: the stirring pond (6) be the toper, and the lower extreme fixedly connected with second valve (25) of stirring pond (6), the lower extreme fixedly connected with support column (9) of stirring pond (6), the lower extreme and base (1) fixed connection of support column (9).
8. The use method of the environment-friendly sewage treatment equipment is characterized by comprising the following steps:
sewage enters an aeration chamber (27) through a water inlet pipe (20), air is pumped into the aeration chamber (27) through an air pipe (19) to realize aeration treatment, meanwhile, a pressure relief valve (21) is arranged to keep a certain pressure of the aeration chamber (27), and under the action of the pressure, water in the aeration chamber (27) passes through a ceramic filter plate (26) and enters a temporary storage chamber (16);
the third pump (24) works, the water is pumped into the stirring pool (6) through the fourth pipe (17), a flocculating agent and a disinfectant are added into the stirring pool (6), the driving motor (14) is started, and the stirring rod (13) rotates to promote the full mixing of the medicament and the water;
the first pump (11) works, the third pipe (12) pumps water into the separation pipe (10), the third pipe (12) moves spirally in the separation pipe (10) in the tangential direction of the side wall of the separation pipe (10) and under the action of the spiral threads (28), and precipitates in the water cling to the inner wall of the separation pipe (10) under the action of centrifugal force, so that the water in the middle of the separation pipe (10) is clarified and discharged from the water outlet pipe (8), and sewage purification is realized;
as the solid impurities in the aeration chamber (27) increase, the first valve (3) needs to be opened at regular time, the sewage enters the sludge tank (5) for sedimentation, and the settled water flows back to the aeration chamber (27) for continuous treatment through the second pump (23) and the second return pipe (18);
along with the work of the stirring tank (6), solid impurities can also be settled at the bottom of the stirring tank (6), a second valve (25) needs to be opened periodically to discharge fixed impurities into the sludge tank (5), simultaneously, muddy water discharged from the separating pipe (10) through the second pipe (7) also enters the sludge tank (5), the muddy water and the muddy water both enter the stirring tank (6) through the second pump (23) and the first return pipe (15), and the first return pipe (15) and the second return pipe (18) are both circulated independently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110670364.0A CN113307429A (en) | 2021-06-17 | 2021-06-17 | Environment-friendly sewage treatment equipment and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110670364.0A CN113307429A (en) | 2021-06-17 | 2021-06-17 | Environment-friendly sewage treatment equipment and using method thereof |
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| CN113307429A true CN113307429A (en) | 2021-08-27 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160098989A (en) * | 2016-03-07 | 2016-08-19 | (주)삼원이앤이 | Treatment System of Food Waste Leachate Capable of Deodoring and Highly Concentration with High Solubility |
| CN110563129A (en) * | 2019-07-12 | 2019-12-13 | 席旭龙 | activated sludge biological sewage treatment device |
| CN111285584A (en) * | 2020-03-06 | 2020-06-16 | 南京创元环保科技工程有限公司 | Sludge treatment equipment and treatment method thereof |
| CN212334822U (en) * | 2019-12-30 | 2021-01-12 | 福建省福清市诺华水务有限公司 | Sewage treatment device with sewage circulation treatment function |
| CN212954691U (en) * | 2020-07-20 | 2021-04-13 | 陕西瑞特碧源环保科技有限公司 | Environment-friendly multistage sewage treatment device |
-
2021
- 2021-06-17 CN CN202110670364.0A patent/CN113307429A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160098989A (en) * | 2016-03-07 | 2016-08-19 | (주)삼원이앤이 | Treatment System of Food Waste Leachate Capable of Deodoring and Highly Concentration with High Solubility |
| CN110563129A (en) * | 2019-07-12 | 2019-12-13 | 席旭龙 | activated sludge biological sewage treatment device |
| CN212334822U (en) * | 2019-12-30 | 2021-01-12 | 福建省福清市诺华水务有限公司 | Sewage treatment device with sewage circulation treatment function |
| CN111285584A (en) * | 2020-03-06 | 2020-06-16 | 南京创元环保科技工程有限公司 | Sludge treatment equipment and treatment method thereof |
| CN212954691U (en) * | 2020-07-20 | 2021-04-13 | 陕西瑞特碧源环保科技有限公司 | Environment-friendly multistage sewage treatment device |
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Application publication date: 20210827 |
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