CN112320908A - Domestic sewage treatment process - Google Patents
Domestic sewage treatment process Download PDFInfo
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- CN112320908A CN112320908A CN202011087645.5A CN202011087645A CN112320908A CN 112320908 A CN112320908 A CN 112320908A CN 202011087645 A CN202011087645 A CN 202011087645A CN 112320908 A CN112320908 A CN 112320908A
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- fixedly connected
- box body
- coagulant
- box
- 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
- C02F1/52—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
- 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
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention belongs to the technical field of sewage treatment, in particular to a domestic sewage treatment process, which comprises the following steps of filtering sewage, and filtering large impurities such as sand stones and the like; secondly, introducing the sewage treated in the first step into a coagulant uniform feeding device for mixing coagulants, and discharging the mixed sewage to a sedimentation tank; step three, the sewage treated in the step two is treated by a common conventional process and then is discharged to a disinfection tank for disinfection; and fourthly, detecting the sewage disinfected in the third step, and discharging the sewage after the detection is qualified. The invention also adopts a coagulant uniformly-feeding device, which comprises a box body, wherein the bottom of the box body is fixedly connected with supporting legs, the left side of the box body is fixedly connected with a drain valve, and the right side of the box body is fixedly connected with a stirring assembly; according to the invention, the stirring assembly is arranged to drive the sewage in the box body to stir up and down, so that the coagulant is uniformly mixed with the sewage stirred up and down in the axial direction of the stirring shaft, and the practicability of the device is improved.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a domestic sewage treatment process.
Background
In the sewage treatment process, the sewage needs to be coagulated, the coagulation is only the aggregation process of colloidal particles and micro suspended matters in water, and the coagulation process is the process of adding a medicament in the sewage treatment process to enable impurities to be coagulated and flocculated.
However, the existing dosing device cannot uniformly spray coagulant into sewage, which can affect the sewage treatment result, and a large amount of dirt is left in the sewage treatment process in the tank body, and if the dirt is not treated, the dirt in a container for storing the sewage is increased, and the normal use of the device is finally affected.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a domestic sewage treatment process which has the characteristic of strong practicability.
In order to achieve the purpose, the invention provides the following technical scheme: a domestic sewage treatment process comprises the following steps:
firstly, filtering sewage to filter large impurities such as sand and stone;
secondly, introducing the sewage treated in the first step into a coagulant uniform feeding device for mixing coagulants, and discharging the mixed sewage to a sedimentation tank;
step three, the sewage treated in the step two is treated by a common conventional process and then is discharged to a disinfection tank for disinfection;
fourthly, detecting the sewage disinfected in the third step, and discharging the sewage after the detection is qualified;
in the above steps, a coagulant even throwing device is adopted in the second step, which comprises a box body, wherein the bottom of the box body is fixedly connected with a supporting leg, the left side of the box body is fixedly connected with a drain valve, the right side of the box body is fixedly connected with a stirring assembly, the left side of the stirring assembly penetrates through the box body and is positioned in the box body, a circular turntable penetrates through the top of the inner wall of the box body through a bearing, the bottom of the inner wall of the circular turntable is provided with a spraying port, the top of the box body is fixedly connected with a protection box, the top of the circular turntable of the protection box penetrates through the protection box and is positioned in the protection box, the top of the circular turntable is fixedly connected with a second gear, the bottom of the inner wall of the protection box is fixedly connected with a second rotating motor, an output shaft of the second rotating motor is fixedly connected with a first gear, the bottom of the inner wall of the coagulant tank is fixedly connected with a delivery pump, the bottom of the delivery pump is fixedly connected with a delivery pipe, and the bottom of the delivery pipe penetrates through the protection box and is positioned in the circular turntable.
Preferably, the right side of the box body is fixedly connected with a storage battery box, and a storage battery is fixedly connected in the storage battery box.
Preferably, the surface of the box body is fixedly connected with an observation window, and the observation window is made of toughened glass.
Preferably, the stirring subassembly includes motor case, first rotation motor, (mixing) shaft and stirring leaf, motor case fixed connection is on the right side of box, the first rotation motor of motor incasement fixedly connected with, the (mixing) shaft is worn to establish in the box through the bearing, the fixed surface of (mixing) shaft is connected with the stirring leaf, the output shaft of first rotation motor passes box and (mixing) shaft fixed connection.
Preferably, the left side of the inner wall of the coagulant tank is fixedly connected with a liquid level meter, the surface of the coagulant tank is fixedly connected with a liquid level meter, and the liquid level meter is electrically connected with the liquid level meter through a lead.
Preferably, the fixed surface of conveying pipeline is connected with the counter, the fixed surface of guard box is connected with the strapping table, the counter passes through wire and strapping table electric connection.
Preferably, the surface of the box body is fixedly connected with a control switch, and the control switch is electrically connected with each electrical device through a lead.
Preferably, the using method of the domestic sewage treatment process comprises the following steps:
step one, injecting sewage and a coagulant into a tank body and a coagulant tank respectively through injection ports;
secondly, a delivery pump, a second rotating motor and a first rotating motor are turned on through a control switch, a horn nozzle installed in a circular rotary table is arranged at the bottom of a delivery pipe when the delivery pump works, a coagulant is delivered into the circular rotary table, then the second rotating motor works to drive a first gear, a second gear, the circular rotary table and a spraying opening to rotate, stepless change of the rotating speed of the circular rotary table is achieved through variable frequency speed regulation of the second rotating motor, and the coagulant is sprayed into sewage in a divergent mode from the spraying opening which is gradually far away from or close to the circle center of the circular rotary table along with increase or decrease of the rotating speed of the circular rotary table;
thirdly, the first rotating motor works to drive the stirring shaft and the stirring blades to rotate, and the vertical upward and downward turning of the sewage is realized through the stirring of the stirring shaft and the stirring blades, so that the coagulant is fully mixed with the sewage;
and step four, after the coagulant finishes sewage treatment, opening a drain valve to discharge the sewage, closing the drain valve after the sewage is discharged to inject clear water into the box body, then opening the first rotating motor again to clean the box body, and opening the drain valve again to discharge the water after the cleaning is finished.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the second rotating motor is arranged, the second rotating motor works to drive the first gear, the second gear and the circular rotating disc to rotate, so that a coagulant can be uniformly and comprehensively sprayed into sewage, the coagulant in the coagulant box can be conveyed into the circular rotating disc through the conveying pump, all electrical appliances in the device can be powered through the storage battery, the practicability of the device is improved, the condition in the box body can be observed through the observation window, the stirring shaft and the stirring blades are driven to rotate through the first rotating motor, the stirring assembly drives the sewage in the box body to be stirred up and down, and the rotating speed of the second rotating motor is controlled, so that the coagulant is uniformly mixed with the sewage stirred up and down in the axial direction of the stirring shaft, the box body is also convenient to clean, the liquid level of the coagulant in the coagulant box can be detected through the liquid level device, the quantity of the coagulant conveyed in the conveying pipe can be detected through the metering device, so that excessive or insufficient coagulant is prevented from being conveyed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a front view cross section of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic view of the stirring assembly of the present invention;
in the figure: 1. a box body; 2. a stirring assembly; 201. a motor case; 202. a first rotating electric machine; 203. a stirring shaft; 204. stirring blades; 3. a drain valve; 4. a spray opening; 5. a circular turntable; 6. a protection box; 7. a second rotating electric machine; 8. a first gear; 9. a meter; 10. a coagulant tank; 11. a liquid level gauge; 12. a delivery pump; 13. a delivery pipe; 14. a second gear; 15. an accumulator case; 16. a storage battery; 17. supporting legs; 18. an observation window; 19. a control switch; 20. a meter; 21. a liquid level meter.
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.
Examples
A domestic sewage treatment process comprises the following steps:
firstly, filtering sewage to filter large impurities such as sand and stone;
secondly, introducing the sewage treated in the first step into a coagulant uniform feeding device for mixing coagulants, and discharging the mixed sewage to a sedimentation tank;
step three, the sewage treated in the step two is treated by a common conventional process and then is discharged to a disinfection tank for disinfection;
fourthly, detecting the sewage disinfected in the third step, and discharging the sewage after the detection is qualified;
in the above steps, the step two adopts a coagulant uniform feeding device,
referring to fig. 1-3, the present invention provides the following technical solutions: device is evenly put in to coagulant, including box 1, the bottom fixedly connected with supporting leg 17 of box 1, the left side fixedly connected with drain valve 3 of box 1, the right side fixedly connected with stirring subassembly 2 of box 1, the left side of stirring subassembly 2 is passed box 1 and is located box 1, circular carousel 5 is worn to be equipped with through the bearing at the top of box 1 inner wall, spraying opening 4 has been seted up to the bottom of circular carousel 5 inner wall, the top fixedly connected with guard box 6 of box 1, guard box 6 is passed at the top of circular carousel 5 and is located guard box 6, the top fixedly connected with second gear 14 of circular carousel 5, the bottom fixedly connected with second rotation motor 7 of guard box 6 inner wall, rotates motor 7 through setting up the second and works and drives first gear 8, The second gear 14 and the circular rotating disc 5 rotate, so that a coagulant can be uniformly and comprehensively sprayed in sewage, the second rotating motor 7 is fixedly connected with the first gear 8 on the output shaft, the first gear 8 is meshed with the second gear 14 and is connected with the coagulant box 10, the top of the protection box 6 is fixedly connected with the coagulant box 10, the bottom of the inner wall of the coagulant box 10 is fixedly connected with the conveying pump 12, the coagulant in the coagulant box 10 can be conveyed to the circular rotating disc 5 through the conveying pump 12, the bottom of the conveying pump 12 is fixedly connected with the conveying pipe 13, and the bottom of the conveying pipe 13 penetrates through the protection box 6 and is located in the circular rotating disc 5.
Specifically, a horn nozzle is arranged at the bottom of the conveying pipe 13, the horn nozzle is arranged at the position of the circle center of the circular turntable 5, uniformly distributed spraying openings 4 are formed in a base plate on the inner wall of the circular turntable 5, and when the circular turntable 5 does not rotate, coagulant sprayed by the horn nozzle is sprayed into sewage through the spraying openings 4 at the position of the circle center of the circular turntable 5; when the circular rotating disc 5 rotates at a low speed, the coagulant is sprayed into the sewage through the spraying port 4 at the position of the circular rotating disc 5 far away from the circle center; along with the increase or reduction of the rotating speed of the circular rotating disc 5, the coagulant is sprayed into the sewage in a divergent mode through the spraying ports 4 which are gradually far away from or close to the circle center of the circular rotating disc 5 under the action of centrifugal force, the stepless change of the rotating speed of the circular rotating disc 5 is realized through the variable frequency speed regulation of the second rotating motor 7, the coagulant is uniformly sprayed into the sewage through the rotation of each spraying port 4, and finally the coagulant is sprayed into the sewage through the spraying ports 4 which are uniformly distributed on the circular rotating disc 5.
Specifically, the stirring assembly 2 comprises a motor box 201, a first rotating motor 202, a stirring shaft 203 and a stirring blade 204, the motor box 201 is fixedly connected to the right side of the box body 1, the first rotating motor 202 is fixedly connected in the motor box 201, the stirring shaft 203 is arranged in the box body 1 in a penetrating manner through a bearing, the stirring blade 204 is fixedly connected to the surface of the stirring shaft 203, an output shaft of the first rotating motor 202 penetrates through the box body 1 and is fixedly connected with the stirring shaft 203, the first rotating motor 202 works to drive the stirring shaft 203 and the stirring blade 204 to rotate, the stirring shaft 203 and the stirring blade 204 drive sewage in the box body to be stirred up and down along the stirring shaft in the axial direction, meanwhile, the diameter of the circular turntable 5 is slightly smaller than that of the box body 1, and the spraying ports 4 uniformly distributed on the circular turntable 5 are rotated and are also in the axial direction along the stirring shaft, the coagulant is sprayed into sewage stirred up and down, the frequency conversion regulation and control of the rotating speed of the second rotating motor 7 are carried out, the coagulant is uniformly sprayed out through each spraying opening 4 distributed on the circular turntable 5, the spraying amount of each spraying opening 4 is uniform, the vertical upward and downward stirring of the sewage is finally realized through the stirring of the stirring assembly, the horizontal dispersing and spraying of the coagulant on the circular turntable 5 are realized, the horizontal and vertical cross mixing is carried out, the uniform and sufficient mixing of the coagulant and the sewage is realized, and the interior of the box body 1 is also convenient to clean.
Specifically, the right side fixedly connected with accumulator box 15 of box 1, fixedly connected with battery 16 in the accumulator box 15, through battery 16, can supply power to all electrical apparatus in the device, improved the practicality of device.
Specifically, the fixed surface of box 1 is connected with observation window 18, observation window 18's material is toughened glass, through observation window 18, can observe the condition in the box 1.
Specifically, the left side fixedly connected with level gauge 11 of coagulant tank 10 inner wall, the fixed surface of coagulant tank 10 is connected with level gauge 21, level gauge 11 passes through wire and level gauge 21 electric connection, through level gauge 11, can detect the coagulant liquid level in coagulant tank 10.
Specifically, the fixed surface of conveying pipeline 13 is connected with counter 9, the fixed surface of guard box 6 is connected with strapping table 20, counter 9 passes through wire and strapping table 20 electric connection, through counter 9, can detect the quantity of the coagulant of carrying in the conveying pipeline 13 to avoid the coagulant of carrying too much or too little.
Specifically, the surface of the box body 1 is fixedly connected with a control switch 19, and the control switch 19 is electrically connected with each electrical device through a lead.
Specifically, the application method of the domestic sewage treatment process comprises the following steps:
step one, injecting sewage and a coagulant into a tank body 1 and a coagulant tank 10 through injection ports respectively;
step two, the delivery pump 12, the second rotating motor 7 and the first rotating motor 202 are turned on through the control switch 19, the coagulant is delivered into the circular rotary table 5 through a horn nozzle arranged at the bottom of the delivery pipe 13 when the delivery pump 12 works, then the second rotating motor 7 works to drive the first gear 8, the second gear 14, the circular rotary table 5 and the spraying opening 4 to rotate, and the stepless change of the rotating speed of the circular rotary table 5 is realized through the variable frequency speed regulation of the second rotating motor 7, and the coagulant is sprayed into the sewage in a divergent mode from the spraying opening 4 which is gradually far away from or close to the circle center of the circular rotary table 5 along with the increase or decrease of the rotating speed of the circular rotary table 5;
step three, the first rotating motor 202 works to drive the stirring shaft 203 and the stirring blades 204 to rotate, and the vertical upward and downward turning of the sewage is realized through the stirring of the stirring shaft 203 and the stirring blades 204, so that the coagulant is fully mixed with the sewage;
and step four, after the coagulant finishes the sewage treatment, opening the drain valve 3 to discharge the sewage, closing the drain valve 3 to inject clear water into the box body 1 after the sewage is discharged, then opening the first rotating motor 202 again to clean the inside of the box body 1, and opening the drain valve 3 again to discharge the water after the cleaning is finished.
The working principle and the using process of the invention are as follows: when the invention is used, sewage and coagulant are respectively injected into the box body 1 and the coagulant box 10 through the injection ports, then the delivery pump 12, the second rotating motor 7 and the first rotating motor 202 are turned on through the control switch 19, the delivery pump 12 works to deliver the coagulant into the circular rotating disc 5, then the second rotating motor 7 works to drive the first gear 8, the second gear 14 and the spraying port 4 to rotate, so as to spray the coagulant into the sewage, the first rotating motor 202 works to drive the stirring shaft 203 and the stirring blades 204 to rotate, thereby carry out intensive mixing with coagulant and sewage, open drain valve 3 and discharge sewage after the coagulant is accomplished with sewage treatment, close drain valve 3 and pour into the box 1 with the clear water after the discharge in, open first rotating electrical machines 202 once more afterwards and wash in with box 1, open drain valve 3 once more after the washing is accomplished and discharge water.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A domestic sewage treatment process comprises the following steps:
firstly, filtering sewage to filter large impurities such as sand and stone;
secondly, introducing the sewage treated in the first step into a coagulant uniform feeding device for mixing coagulants, and discharging the mixed sewage to a sedimentation tank;
step three, the sewage treated in the step two is treated by a common conventional process and then is discharged to a disinfection tank for disinfection;
fourthly, detecting the sewage disinfected in the third step, and discharging the sewage after the detection is qualified;
in the above steps, the coagulant evenly throwing device is adopted in the second step, the coagulant evenly throwing device comprises a box body (1) and is characterized in that supporting legs (17) are fixedly connected to the bottom of the box body (1), a drain valve (3) is fixedly connected to the bottom of the left side of the box body (1), a stirring assembly (2) is fixedly connected to the right side of the box body (1), the left side of the stirring assembly (2) penetrates through the box body (1) and is located in the box body (1), a circular turntable (5) is arranged at the top of the inner wall of the box body (1) in a penetrating mode through a bearing, evenly distributed spraying openings (4) are formed in the bottom of the inner wall of the circular turntable (5), a protection box (6) is fixedly connected to the top of the box body (1), a second gear (14) installed in the protection box (6) is fixedly connected to the top of the circular turntable (5), and a second rotating, the utility model discloses a rotating machine, including the second, the second rotates the output shaft of motor (7) on fixedly connected with first gear (8), first gear (8) are connected with second gear (14) meshing, the top fixedly connected with coagulant case (10) of guard box (6), the bottom fixedly connected with delivery pump (12) of coagulant case (10) inner wall, the bottom fixedly connected with conveying pipeline (13) of delivery pump (12), the bottom of conveying pipeline (13) is passed guard box (6) and is located circular carousel (5).
2. The domestic sewage treatment process according to claim 1, wherein: the bottom of conveying pipeline (13) is provided with the loudspeaker shower nozzle, the loudspeaker shower nozzle sets up in circular carousel (5) centre of a circle position department.
3. The domestic sewage treatment process according to claim 1, wherein: the right side of the box body (1) is fixedly connected with a storage battery box (15), and a storage battery (16) is fixedly connected in the storage battery box (15).
4. The domestic sewage treatment process according to claim 1, wherein: the surface of the box body (1) is fixedly connected with an observation window (18), and the observation window (18) is made of toughened glass.
5. The domestic sewage treatment process according to claim 1, wherein: stirring subassembly (2) include motor case (201), first rotation motor (202), (mixing) shaft (203) and stirring leaf (204), motor case (201) fixed connection is on the right side of box (1), the first rotation motor (202) of fixedly connected with in motor case (201), setting up in box (1) is worn through the bearing in (mixing) shaft (203), the fixed surface of (mixing) shaft (203) is connected with stirring leaf (204), the output shaft of first rotation motor (202) passes box (1) and (mixing) shaft (203) fixed connection.
6. The domestic sewage treatment process according to claim 1, wherein: the left side fixedly connected with level gauge (11) of coagulant case (10) inner wall, the fixed surface of coagulant case (10) is connected with level gauge (21), level gauge (11) pass through wire and level gauge (21) electric connection.
7. The domestic sewage treatment process according to claim 1, wherein: the surface fixed connection of conveying pipeline (13) has counter (9), the surface fixed connection of guard box (6) has strapping table (20), counter (9) passes through wire and strapping table (20) electric connection.
8. The domestic sewage treatment process according to claim 1, wherein: the surface of the box body (1) is fixedly connected with a control switch (19), and the control switch (19) is electrically connected with each electrical device through a lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011087645.5A CN112320908A (en) | 2020-10-13 | 2020-10-13 | Domestic sewage treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011087645.5A CN112320908A (en) | 2020-10-13 | 2020-10-13 | Domestic sewage treatment process |
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| Publication Number | Publication Date |
|---|---|
| CN112320908A true CN112320908A (en) | 2021-02-05 |
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ID=74313646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011087645.5A Pending CN112320908A (en) | 2020-10-13 | 2020-10-13 | Domestic sewage treatment process |
Country Status (1)
| Country | Link |
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| CN (1) | CN112320908A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205603441U (en) * | 2016-04-25 | 2016-09-28 | 山东毅康科技股份有限公司 | A two rehandle devices for quenching and tempering of mud chemistry |
| CN208553852U (en) * | 2018-05-24 | 2019-03-01 | 浙江奥帅制冷有限公司 | A kind of sewage treatment coagulation device that work efficiency is high |
| CN211595267U (en) * | 2019-11-26 | 2020-09-29 | 山东省环科院环境科技有限公司 | Can promote sedimentation velocity's sedimentation tank for sewage treatment |
-
2020
- 2020-10-13 CN CN202011087645.5A patent/CN112320908A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205603441U (en) * | 2016-04-25 | 2016-09-28 | 山东毅康科技股份有限公司 | A two rehandle devices for quenching and tempering of mud chemistry |
| CN208553852U (en) * | 2018-05-24 | 2019-03-01 | 浙江奥帅制冷有限公司 | A kind of sewage treatment coagulation device that work efficiency is high |
| CN211595267U (en) * | 2019-11-26 | 2020-09-29 | 山东省环科院环境科技有限公司 | Can promote sedimentation velocity's sedimentation tank for sewage treatment |
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Application publication date: 20210205 |