CN112723510A - Flocculation device for shield muck treatment - Google Patents
Flocculation device for shield muck treatment Download PDFInfo
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- CN112723510A CN112723510A CN202011635031.6A CN202011635031A CN112723510A CN 112723510 A CN112723510 A CN 112723510A CN 202011635031 A CN202011635031 A CN 202011635031A CN 112723510 A CN112723510 A CN 112723510A
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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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
- C02F2209/03—Pressure
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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
- C02F2209/40—Liquid flow rate
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- General 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)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to the technical field of shield muck treatment, and particularly relates to a flocculation device for shield muck treatment. The problem of among the prior art thick liquid mix with the flocculating agent in the flocculation tank inadequately fully lead to flocculation effect poor, the treatment effeciency low is solved. The device comprises a flocculation tank, wherein a support column is arranged at the lower part of the flocculation tank, a spiral feeding groove and a central feeding pipe are arranged at the top of the flocculation tank, the central feeding pipe is communicated with the inside of the flocculation tank, a water inlet is formed in one end of the spiral feeding groove, the other end of the spiral feeding groove is communicated with the central feeding pipe, a water outlet is formed in the upper part of the side wall of the flocculation tank, and a sludge discharge port is formed in the bottom of the flocculation tank. According to the invention, the spiral feeding groove is arranged at the top of the flocculation tank, so that the slurry and the flocculation reagent are mixed more fully, and the material is fed through the central feeding pipe, so that the sedimentation of solid particles in the slurry is accelerated, the sedimentation time is shortened, the treatment efficiency of the flocculation device is improved, and the treatment efficiency of shield muck is improved.
Description
Technical Field
The invention belongs to the technical field of shield muck treatment, and particularly relates to a flocculation device for shield muck treatment.
Background
The shield machine is widely applied to urban subway construction due to the factors of safety, high construction efficiency, low cost, wide applicable stratum and the like. Meanwhile, due to the fact that stratum contains water and bentonite is added in the tunneling process, the slag soil conveyed out in the shield construction process contains a large amount of water and is even in a semi-flowing state. At present, the shield muck is treated in a yard by direct outward transportation, and the method has low transportation efficiency due to the high water content of the shield muck and is easy to spill and pollute roads in the transportation process, so that the emission of the muck is strictly limited by local governments and environmental protection departments, and the problem of the muck emission is a large factor for limiting the normal operation of shield construction; the stacking of a large amount of high-water-content muck in subway construction wastes a large amount of national soil resources, occupies large-scale cultivated land, is unstable in stacking of the water-content muck, is easy to cause disasters such as landslide and collapse, is one of main pollution sources of sand and dust pollution, and can cause serious pollution to water resources of yard accessories due to liquid leaching of the muck. Meanwhile, the shield muck contains a large amount of available inorganic raw materials, and the current treatment mode is not only pollution to the environment and damage and waste of national soil resources, but also waste of the inorganic raw materials and causes serious obstruction to the sustainable development of the society.
Therefore, many enterprises begin to carry out grading treatment on shield construction muck so as to realize shield muck reduction transportation, resource utilization and environmental protection treatment. The flocculation tank is an important device in the shield construction residue soil treatment process, the produced slurry is required to be pumped into the flocculation tank for flocculation and precipitation in the grading treatment of the shield construction residue soil, the supernatant can be used for residue soil treatment or shield construction again, and the precipitate is sent into a filter press for pressing and filtering into mud cakes. The existing flocculation tank has the problem that a flocculating agent and slurry are not sufficiently mixed, so that the flocculation effect is poor, the time required for slurry precipitation is long, the slurry treatment efficiency is low, and the shield muck treatment efficiency is seriously restricted.
Disclosure of Invention
Aiming at the problem that the slurry and the flocculating agent are not sufficiently mixed in the flocculation tank in the prior art, the invention provides a flocculation device for shield muck treatment, which aims to: the slurry and the flocculating agent are fully mixed, and the settling time is shortened, so that the shield muck treatment efficiency is improved.
The technical scheme adopted by the invention is as follows:
the utility model provides a flocculation device for shield constructs dregs is handled, includes the flocculation tank, the lower part of flocculation tank is provided with the support column, the top of flocculation tank is provided with spiral feed chute and central inlet pipe, the inside intercommunication of central inlet pipe and flocculation tank, the one end of spiral feed chute is provided with the water inlet, the other end and central inlet pipe intercommunication, the lateral wall upper portion of flocculation tank is provided with the delivery port, the bottom of flocculation tank is provided with row mud mouth.
After adopting this technical scheme, during mud got into spiral feed chute through the water inlet, then entered into inside the flocculation tank through central inlet pipe, set up like this and can increase the course that mud flowed into the flocculation tank and passed through, made mud and flocculation medicament mix more abundant, through central inlet pipe feeding, can accelerate the sediment of solid particle in the mud to shorten settling time, improve the treatment effeciency of flocculation device, and then improve the treatment effeciency of shield structure dregs.
Preferably, a plurality of spoilers are arranged in the spiral feeding groove, and the spoilers are arranged on two sides of the spiral feeding groove at intervals.
After adopting this preferred scheme, the spoiler can make the mud and the flocculation reagent of flowing through spiral feed chute mix more abundant to improve the efficiency of flocculation and precipitation.
Preferably, the lower end of the central feed tube is flared in shape.
After adopting this preferred scheme, more disperse when mud flows from the lower extreme of central inlet pipe, the velocity of flow is lower, can prevent that the too big sediment with flocculation tank lower part of mud impact force from curling up, also is favorable to the sediment of the solid particle in the mud simultaneously to improve precipitation efficiency.
Preferably, the outer side of the central feeding pipe is provided with a buffer plate, and an included angle between the lower surface of the buffer plate and the central feeding pipe is 65-75 degrees.
After adopting this preferred scheme, liquid can upwards backward flow after coming out from the lower extreme of central inlet pipe to take solid particle upward movement, the buffer board can block most solid particle, prevents its upward movement, thereby is favorable to solid particle's precipitation.
Preferably, an overflow cofferdam is arranged on the inner side of the flocculation tank, the overflow cofferdam is annularly arranged along the side wall of the flocculation tank, the top of the overflow cofferdam is higher than the top of the water outlet, and the bottom of the overflow cofferdam is flush with the bottom of the water outlet.
When not setting up the overflow cofferdam, the liquid in the flocculation jar can directly go out from the delivery port overflow, because the cross section of delivery port is less, consequently great from the water flow velocity of delivery port overflow, takes away the great flocculation mud group in the flocculation jar easily, leads to from delivery port exhaust overflow liquid flocculation mud group more. After the overflow cofferdam is arranged, supernatant in the flocculation tank overflows from the top of the overflow cofferdam and is discharged through the water outlet, and the cross section of the overflow cofferdam is close to that of the flocculation tank and far larger than that of the water outlet, so that the water flow speed of overflow from the top of the overflow cofferdam is low and the height of the water flow is low, the overflow cofferdam can block flocculated mud blocks, the overflow cofferdam is prevented from being over, and therefore the clear overflow is ensured. In addition, because the setting of overflow cofferdam has increased the volume of flocculation jar to increased the distance that the supernatant fluid flows out the flocculation jar and passed through, be equivalent to under the same circumstances of liquid velocity of flow and increased the flocculation time of liquid in the flocculation jar, improved the effect of flocculation and precipitation.
Preferably, the sidewall of the flocculation tank is provided with a plurality of observation windows.
After the preferable scheme is adopted, the condition of flocculation and precipitation in the flocculation tank can be observed through the observation window, and the thickness of sediments is known.
Preferably, a pressure sensor is arranged in the flocculation tank, and the pressure sensor is positioned at the lower part of the flocculation tank.
After the optimal scheme is adopted, the sedimentation condition at the bottom of the flocculation tank can be detected through the pressure sensor.
Preferably, the sludge discharge port comprises a first sludge discharge port and a second sludge discharge port, the diameter of the first sludge discharge port is larger than that of the second sludge discharge port, and a second back flushing port is arranged on the second sludge discharge port.
After adopting this preferred scheme, can take away the deposit of flocculation tank bottom through the second sludge discharge mouth, when the second sludge discharge mouth blockked up, can carry out the back flush through the second back flush mouth, if the back flush also can't dredge the time, can open the apron of first sludge discharge mouth department, dredge through the manual work from first sludge discharge mouth department.
Preferably, the number of the flocculation tanks is two, and a water inlet of one flocculation tank is connected with a water outlet of the other flocculation tank.
After adopting this preferred scheme, can establish ties two flocculation tanks to realize the two-stage and deposit, make the content of solid particle in the last discharged water lower, the flocculation effect is better, also can improve the efficiency of mud processing.
Preferably, the automatic chemical feeding device further comprises an automatic chemical feeding device, a variable frequency screw pump is arranged in the automatic chemical feeding device and connected with a control unit, the control unit is connected with a flow detection device, and the flow detection device is used for detecting the flow of a slurry pipeline for conveying slurry to the water inlet (4).
After the optimal scheme is adopted, the flow detection device detects the flow in the slurry pipeline in real time, and the control unit adjusts the rotating speed of the variable-frequency screw pump according to the flow of the slurry, so that the dosing speed is adjusted, the function of automatically adding the flocculating agent according to the flow of the slurry is realized, and the problem of inaccurate manual dosing amount control is avoided.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. set up spiral feed chute at the flocculation tank top, can increase the distance that mud flowed into flocculation tank and passed through, make mud and flocculation medicament mix more abundant, through central inlet pipe feeding, can accelerate the sediment of solid particle in the mud to shorten settling time, improve flocculation device's treatment effeciency, and then improve the treatment effeciency of shield structure dregs.
2. Set up the spoiler in the spiral feed chute, the spoiler can make the mud and the flocculation medicament of spiral feed chute of flowing through mix more fully to improve the efficiency of flocculation and precipitation.
3. The shape of the lower end of the central feeding pipe is horn-shaped, so that the mud is more dispersed when flowing out from the lower end of the central feeding pipe, the flow rate is lower, the mud impact force can be prevented from being overlarge to roll up the sediment at the lower part of the flocculation tank, and meanwhile, the sedimentation of solid particles in the mud is also facilitated, so that the sedimentation efficiency is improved.
4. The outside of center inlet pipe sets up the buffer board, and the buffer board can block most solid particle, prevents its upward movement to be favorable to solid particle's sediment.
5. After the overflow cofferdam is arranged, supernatant in the flocculation tank overflows from the top of the overflow cofferdam and is discharged through the water outlet, and the cross section of the overflow cofferdam is close to that of the flocculation tank and far larger than that of the water outlet, so that the water flow speed of overflow from the top of the overflow cofferdam is low and the height of the water flow is low, the overflow cofferdam can block flocculated mud blocks, the overflow cofferdam is prevented from being over, and therefore the clear overflow is ensured. In addition, because the setting of overflow cofferdam has increased the volume of flocculation jar to increased the distance that the supernatant fluid flows out the flocculation jar and passed through, be equivalent to under the same circumstances of liquid velocity of flow and increased the flocculation time of liquid in the flocculation jar, improved the effect of flocculation and precipitation.
6. The lateral wall of flocculation tank is provided with the several observation window, can observe the condition of flocculation sediment in the flocculation tank through the observation window, masters the thickness of deposit at any time.
7. Be provided with pressure sensor in the flocculation tank, can survey the siltation condition of flocculation tank bottom through pressure sensor.
8. Can take away the deposit of flocculation tank bottom through the second row mud mouth, when the second row mud mouth blockked up, can carry out the back flush through the second back flush mouth, if the back flush also can't dredge the time, can open the apron of first row mud mouth department, dredge through the manual work from first row mud mouth department.
9. Two flocculation tanks are connected in series, so that two-stage precipitation is realized, the content of solid particles in finally discharged water is lower, the flocculation effect is better, and the efficiency of slurry treatment can be improved.
10. The flow detection device detects the flow in the slurry pipeline in real time, and the control unit adjusts the rotating speed of the variable-frequency screw pump according to the flow of the slurry, so that the dosing speed is adjusted, the function of automatically adding flocculating agents according to the flow of the slurry is realized, and the problem of inaccurate manual dosing amount control is avoided.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a top view of the present invention.
The system comprises a flocculation tank 1, a support column 2, a spiral feeding groove 3, a water inlet 4, a water outlet 5, a central feeding pipe 6, an overflow cofferdam 7, reinforcing ribs 8, guardrails 9, observation windows 10, a first ladder stand 11, a second ladder stand 12, a buffer plate 13, a pressure sensor 14, a first sludge discharge port 15, a second sludge discharge port 16, a first back flushing port 17, a reinforcing plate 18, a reinforcing support 19, a spoiler 20, an inspection port 21 and a second back flushing port 22.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
The present invention will be described in detail with reference to fig. 1 and 2.
Example one
The utility model provides a flocculation device for shield constructs dregs is handled, includes flocculation tank 1, the lower part of flocculation tank 1 is provided with four spinal branch daggers 2, the top of flocculation tank 1 is provided with spiral feed chute 3 and central inlet pipe 6, central inlet pipe 6 communicates with the inside of flocculation tank 1, the one end of spiral feed chute 3 is provided with water inlet 4, the other end and central inlet pipe 6 intercommunication, the lateral wall upper portion of flocculation tank 1 is provided with delivery port 5, the bottom of flocculation tank 1 is provided with row mud mouth. The upper portion of flocculation jar 1 is cylindrical, and the lower part is the toper, and the both ends of cylindrical part all are provided with strengthening rib 8 with the centre for reinforcing flocculation jar 1's structural strength and rigidity. The position that flocculation tank toper part and support column 2 are connected is provided with reinforcing plate 18 for improve flocculation tank 1 in the intensity of junction, the middle part of toper part is provided with strengthens support 19, strengthen support 19 and support column 2 welded fastening.
In the present embodiment, as shown in fig. 2, a plurality of spoilers 20 are disposed in the spiral feed chute 3, and the spoilers 20 are spaced apart from each other on both sides of the spiral feed chute 3.
As shown in FIG. 1, the lower end of the central feed tube 6 is shaped like a trumpet. The outside of central inlet pipe 6 is provided with buffer board 13, and in this embodiment, the lower surface of buffer board 13 is 71 degrees with the contained angle between central inlet pipe 6. Be provided with the guardrail around flocculation tank 1's the top, the inside of flocculation tank 1 is provided with first cat ladder 11, is convenient for overhaul and clear up the flocculation tank is inside when necessary, and the flocculation tank 1 outside is provided with second cat ladder 12, second cat ladder 12 extends to the top from flocculation tank 1's bottom, and the staff of being convenient for goes up the flocculation tank top and carries out the operation.
An overflow cofferdam 7 is arranged on the inner side of the flocculation tank 1, the top of the overflow cofferdam 7 is higher than the top of the water outlet 5, and the bottom of the overflow cofferdam 7 is flush with the bottom of the water outlet 5. In this embodiment, the height of the overflow cofferdam 7 is 40cm, the distance from the overflow cofferdam 7 to the side wall of the flocculation tank 1 is 30cm, and the top of the overflow cofferdam 7 has a gap of 10cm from the top of the flocculation tank 1 for serving as a passage for supernatant overflow.
In this embodiment, the lateral wall of flocculation tank 1 is provided with two observation windows 10, is located flocculation tank 1's upper portion and well lower part respectively to observation window 10 is located same one side with second cat ladder 12, and the staff of being convenient for observes on second cat ladder 12.
A pressure sensor 14 is arranged in the flocculation tank 1, and the pressure sensor 14 is positioned at the lower part of the flocculation tank 1. Since the density of the sediment is greater than that of the water, after the thickness of the sediment exceeds the position of the pressure sensor, the pressure applied to the pressure sensor is increased, so that the height of the sediment can be monitored through the pressure change of the pressure sensor.
The sludge discharge port comprises a first sludge discharge port 15 and a second sludge discharge port 16, the diameter of the first sludge discharge port 15 is larger than that of the second sludge discharge port 16, and a second back flushing port 22 is arranged on the second sludge discharge port 16. The bottom of flocculation tank 1 still is provided with first back flush mouth 17 and inspection opening 21, when appearing blockking up, can open inspection opening 21 and observe the mobility of deposit, if mobility is good, can carry out the back flush and eliminate the jam, if mobility is poor or have other foreign matter to block up, can open first mud discharging port 15 and dredge.
Example two
The present embodiment is basically the same as the first embodiment, except that:
in this embodiment, the quantity of flocculation jar 1 is two, including first flocculation jar and second flocculation jar, establishes ties first flocculation jar and second flocculation jar during the use, is about to be connected first flocculation jar delivery port and second flocculation jar water inlet. Mud pipeline and first flocculation jar's water inlet intercommunication, after mud is through first flocculation jar flocculation and precipitation, the liquid that the overflow goes out gets into to precipitate once more in the second flocculation jar to improve treatment effect.
The invention also comprises an automatic dosing device, wherein a variable frequency screw pump is arranged in the automatic dosing device, the flocculating agent is added into the slurry pipeline through the variable frequency screw pump, a flow detection device is arranged in the slurry pipeline, and the flow detection device is connected with a control unit. The flow detection device transmits the flow signal to the control unit in real time, and the control unit adjusts the frequency of the variable frequency screw pump according to the flow signal, so that the dosage of the flocculating agent is controlled.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (10)
1. The utility model provides a flocculation device for shield constructs dregs is handled, a serial communication port, including flocculation tank (1), the lower part of flocculation tank (1) is provided with support column (2), the top of flocculation tank (1) is provided with spiral feed chute (3) and central inlet pipe (6), central inlet pipe (6) and the inside intercommunication of flocculation tank (1), the one end of spiral feed chute (3) is provided with water inlet (4), and the other end communicates with central inlet pipe (6), the lateral wall upper portion of flocculation tank (1) is provided with delivery port (5), the bottom of flocculation tank (1) is provided with row mud mouth.
2. A flocculation apparatus for shield muck treatment according to claim 1, wherein a plurality of spoilers (20) are arranged in the spiral feed chute (3), the spoilers (20) being spaced apart on both sides of the spiral feed chute (3).
3. A flocculation apparatus for shield muck treatment according to claim 1, wherein the lower end of the central feed pipe (6) is trumpet shaped.
4. A flocculation apparatus for shield muck treatment according to claim 1, wherein a buffer plate (13) is arranged outside the central feed pipe (6), and the angle between the lower surface of the buffer plate (13) and the central feed pipe (6) is 65 ° to 75 °.
5. A flocculation apparatus for shield muck treatment according to claim 1, wherein an overflow cofferdam (7) is arranged inside the flocculation tank (1), the overflow cofferdam (7) is annularly arranged along the side wall of the flocculation tank (1), the top of the overflow cofferdam (7) is higher than the top of the water outlet (5), and the bottom of the overflow cofferdam (7) is flush with the bottom of the water outlet (5).
6. A flocculation apparatus for shield muck treatment according to claim 1, wherein the side walls of the flocculation tank (1) are provided with several observation windows (10).
7. A flocculation apparatus for shield muck treatment according to claim 1, wherein a pressure sensor (14) is arranged in the flocculation tank (1), the pressure sensor (14) being located in the lower part of the flocculation tank (1).
8. The flocculation apparatus of claim 1, wherein the sludge discharge port comprises a first sludge discharge port (15) and a second sludge discharge port (16), the diameter of the first sludge discharge port (15) is larger than that of the second sludge discharge port (16), and a second back-flushing port (22) is arranged on the second sludge discharge port (16).
9. A flocculation apparatus for shield muck treatment according to claim 1, wherein the number of flocculation tanks (1) is two, wherein the water inlet (4) of one flocculation tank (1) is connected to the water outlet (5) of the other flocculation tank (1).
10. The flocculation device for shield muck treatment according to claim 1, further comprising an automatic dosing device, wherein a variable frequency screw pump is arranged in the automatic dosing device, the variable frequency screw pump is connected with a control unit, the control unit is connected with a flow detection device, and the flow detection device is used for detecting the flow of a slurry pipeline for delivering slurry to the water inlet (4).
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| CN202011635031.6A CN112723510A (en) | 2020-12-31 | 2020-12-31 | Flocculation device for shield muck treatment |
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| CN203598540U (en) * | 2013-10-31 | 2014-05-21 | 南京源泉环保科技股份有限公司 | Vertical flow sedimentation tank |
| CN203959896U (en) * | 2014-01-15 | 2014-11-26 | 福建元科机械有限公司 | Vertical-flow deposition filter |
| CN203781912U (en) * | 2014-04-10 | 2014-08-20 | 山东省环境保护科学研究设计院 | Gas-solid-liquid three-phase separation device in wastewater treatment process |
| CN105668740A (en) * | 2016-03-17 | 2016-06-15 | 绵阳科勤环保科技有限公司 | Integrated sand washing waste water reuse device |
| CN106345149A (en) * | 2016-11-08 | 2017-01-25 | 太原科技大学 | Concentrator flocculation reaction device |
| CN209010206U (en) * | 2018-06-04 | 2019-06-21 | 湖南东环环保科技有限公司 | Flocculation deposition apparatus and sewage disposal system |
| CN109354246A (en) * | 2018-11-15 | 2019-02-19 | 山东科技大学 | A kind of high-concentration sewage quick treatment device and its processing method |
| CN209917455U (en) * | 2019-05-13 | 2020-01-10 | 四川三电智慧科技有限公司 | High-efficient vertical flow sedimentation tank with filtering capability |
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Application publication date: 20210430 |