CN210528638U - Coagulating basin and bottom mud residual water treatment equipment - Google Patents

Abstract

The utility model belongs to the technical field of sewage treatment equipment, and provides a coagulation tank, which comprises a tank body, a dosing device, a first stirring mechanism and a buffer tank, wherein water in the tank body can flow from bottom to top, so that additional air is not easy to mix, and the buffer tank can ensure that the stirred water is preliminarily kept still before flowing into a precipitation unit through a turbid liquid outlet, so that the doped excess gas in the water escapes; meanwhile, the buffer tank is arranged in the tank body and positioned at one side or one corner of the upper part of the tank body, so that the effect of energy dissipation can be achieved, and the standing in the buffer tank is facilitated; finally, the pipeline connected with the turbid liquid outlet can convey more water, so that the workload of the pipeline and the precipitation unit is reduced, and the treatment efficiency is improved. Simultaneously provides a sediment surplus water treatment facilities again, including foretell coagulating basin, can make water treatment facilities by the miniaturization after, still can guarantee higher treatment effeciency and better treatment effect, be fit for the processing to sediment surplus water more.

Description

Coagulating basin and bottom mud residual water treatment equipment

Technical Field

The utility model belongs to the technical field of sewage treatment device, more specifically say, relate to a coagulating basin and sediment surplus water treatment facilities.

Background

The river channel environment-friendly dredging is a novel industry developed in the last 30 years, and is a cross engineering technology of hydraulic engineering, environmental engineering and dredging engineering. Since this century, there are many different scale dredging projects being implemented or initiated in our country. According to the domestic and foreign sewage treatment experience, under the condition that the exogenous pollution of a water body is controlled, endogenous pollution, namely polluted bottom mud, must be thoroughly removed, a water body ecosystem is reconstructed, and the ideal effect can be achieved through river channel treatment, so that the river channel environmental protection dredging is generally considered to be one of important measures for removing the endogenous pollution in the water environment treatment process. However, with the implementation of environmental dredging projects, a large amount of dredging residual water is produced and is often discharged into nearby receiving waters without being effectively treated. Because the dredged residual water contains high-concentration suspended matters, nitrogen, phosphorus, organic matters and other pollutants, the dredged residual water is directly discharged into a receiving water body to cause serious ecological environment pollution. Therefore, considering the reconstruction of the aquatic ecosystem of the dredging area, the secondary pollution is prevented, and the sludge residual water must be treated after dredging to be discharged.

At present, the conventional treatment method for the residual water mainly comprises physical sedimentation, chemical flocculation and the like. In the water treatment process, coagulation sedimentation is an important step for pretreating sewage, and the conventional coagulation sedimentation mode is mainly that the sewage is added with medicine and uniformly stirred in a coagulation tank and then is subjected to standing sedimentation, so that the efficiency is low due to the discontinuity of the mode. For continuous production, the coagulation basin can therefore be followed by a separate sedimentation basin. However, in such continuous production, the stirred water, particularly the aerated and stirred water, often contains a large amount of gas, and the direct inflow into the sedimentation tank reduces the conveying efficiency of the conveying pipeline, thereby increasing the burden on the sedimentation tank.

Meanwhile, the range of the river channel area is large, the dredging areas are distributed in a random state, and the sediment dredging residual water is very inconvenient and uneconomical to transport to a water treatment plant, so that a small and movable water treatment device is needed to be designed for more conveniently and economically treating the sediment residual water. The above problems are more obvious when the coagulation tank and the sedimentation tank are directly miniaturized to be small enough, and the treatment efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coagulating basin and sediment surplus water treatment facilities to solve the technical problem that sedimentation tank and pipeline work burden that exist among the prior art are big and that it leads to will coagulate the technical problem that efficiency is low after the pond and the sedimentation tank are miniaturized.

In order to achieve the above object, the utility model adopts the following technical scheme: providing a coagulation tank, which comprises a tank body, a dosing device, a first stirring mechanism and a buffer tank, wherein the lower part of the tank body is provided with a mixed water inlet for introducing water to be treated; the medicine adding device is connected with the tank body and communicated with the lower part of the tank body and is used for adding medicine into the tank body to form a mixed solution; the first stirring mechanism is arranged on the tank body and comprises a stirring part which is arranged in the middle of the tank body and is used for stirring the mixed liquid in the tank body; the buffer tank is arranged in the tank body and is positioned on one side of the upper part of the tank body or on the upper part of one corner, a supernatant outlet for discharging supernatant is arranged, and a turbid liquid outlet for discharging turbid liquid with sediments is arranged on the lower part of the buffer tank.

Further, in the coagulation tank, the dosing device comprises a liquid medicine storage tank, a second stirring mechanism, a medicine conveying pipeline and a dosing control assembly, wherein the liquid medicine storage tank is used for storing liquid medicine; the second stirring mechanism is arranged on the liquid medicine storage tank and is used for stirring the liquid medicine in the liquid medicine storage tank; the medicine conveying pipeline is used for communicating the medicine liquid storage tank with the tank body; the medicine adding control assembly is arranged on the medicine conveying pipeline and is used for controlling the amount of liquid medicine passing through the medicine conveying pipeline.

Furthermore, in the coagulation tank, the dosing devices are provided with a plurality of groups; a pipeline mixer is arranged on the mixing water inlet, the medicine conveying pipelines of at least one group of medicine adding devices are connected with the input end of the pipeline mixer, and the medicine adding control assembly is a control valve or a liquid pump; the stirring part is a stirring blade, the first stirring mechanism further comprises a power assembly and a rotating shaft, and the power assembly is arranged at the upper part of the tank body and used for outputting power; the rotating shaft is of a cylindrical structure with smooth appearance, one end of the rotating shaft is connected with the power output end of the power assembly, and the other end of the rotating shaft extends into the tank body and is connected with the stirring blades.

Further, in the coagulation tank, the coagulation tank further comprises an air-entraining device, and the air-entraining device is connected with the lower part of the tank body and is used for introducing air or oxygen into the tank body for aeration.

Further, in the coagulation basin, a supernatant outlet for discharging supernatant is formed in the upper portion of the buffer tank.

Furthermore, in the coagulation basin, a lifting baffle, a buoyancy assembly and a counterweight assembly are also arranged on the buffer tank, and the lifting baffle is connected with the supernatant outlet in a vertical sliding manner and is used for partially shielding the supernatant outlet; the buoyancy component is connected with the lifting baffle and is used for driving the lifting baffle to descend along with the descending of the water level in the buffer tank; the counterweight component is connected with or integrally arranged with the lifting baffle plate and is used for providing a force for driving the lifting baffle plate to move downwards.

Furthermore, in the coagulation basin, the outer wall of the side part of the buffer tank is provided with a water-blocking energy dissipation plate for blocking the movement of water flow in the basin body; the water-blocking energy dissipation plate and the outer wall of the buffer box form an included angle; the surface of the water-blocking energy dissipation plate is parallel to the rotating shaft of the stirring part.

Further, in the coagulation basin, the coagulation basin further comprises a water level adjusting mechanism, and the water level adjusting mechanism is used for adjusting the water level in the basin body.

Furthermore, in the coagulation tank, the water level adjusting mechanism comprises a water level monitoring module, a variable frequency water pump and a control module, wherein the water level monitoring module is used for monitoring the water level in the tank body; the variable frequency water pump is connected with the mixed water inlet and is used for injecting water to be treated into the tank body; the control module is respectively electrically connected with the water level monitoring module and the variable frequency water pump and is used for receiving signals of the water level monitoring module and controlling the water delivery efficiency of the variable frequency water pump according to the signals.

Further, in the coagulation tank, the coagulation tank further includes a supernatant storage tank connected to the supernatant outlet, and the tank body and the dosing device are arranged in parallel on the upper portion of the supernatant storage tank.

The invention also aims to provide a sediment residual water treatment device which comprises the coagulation tank.

The utility model provides a coagulating basin's beneficial effect lies in: compared with the prior art, the utility model discloses a set up the lower part and intake the medicine, the middle part is stirred, the cell body that upper portion flows, make the water in the cell body flow from bottom to top, can make the water that adds the medicine all obtain intensive mixing through first rabbling mechanism, and be difficult to mix extra air, and through setting up the baffle-box, make the water after the stirring obtain preliminary stewing before flowing into the precipitation unit through turbid liquid export, make the unnecessary gas escape of aquatic doping, make the pipeline of being connected with turbid liquid export can carry more water, be favorable to reducing the work burden of pipeline and precipitation unit; meanwhile, the buffer tank is arranged in the tank body and positioned at one side or one corner of the upper part of the tank body, so that the cross section shapes of the upper part and the lower part of the tank body are different, the flow state generated by stirring in the water body is destroyed, more turbulent flows are generated, the energy dissipation effect is achieved, and the standing in the buffer tank is facilitated; finally, the comprehensive action is beneficial to the miniaturization of the coagulation tank and the sedimentation unit and the improvement of the treatment efficiency.

The utility model provides a sediment surplus water treatment facilities's beneficial effect lies in: compared with the prior art, the utility model discloses can make water treatment facilities by miniaturized back, still can guarantee higher treatment effeciency and better treatment effect, be fit for the processing to the surplus water of bed mud more.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic top view of a coagulation basin and a bottom mud residual water treatment device according to an embodiment of the present invention;

fig. 2 is a schematic top view of a coagulation basin and a bottom mud residual water treatment device according to another embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 2;

fig. 5 is a schematic cross-sectional view of a buffer tank of a coagulation basin according to another embodiment of the present invention, the buffer tank being viewed in the same direction as the B-B direction.

Wherein, in the figures, the respective reference numerals:

10. a tank body;

11. a mixing water inlet; 12. a pipeline mixer;

20. a dosing device;

21. a liquid medicine storage tank; 22. a second stirring mechanism; 23. a drug delivery line; 24. a dosing control assembly;

30. a first stirring mechanism; 31. a power assembly; 32. a rotating shaft; 33. a stirring blade;

40. a buffer tank;

41. a coagulation water inlet; 42. a supernatant outlet; 43. a turbid liquid outlet;

44. a water-blocking energy dissipation plate; 45. a lifting baffle plate; 46. a buoyancy assembly; 47. a counterweight assembly;

51. a water level monitoring module; 52. a variable frequency water pump; 53. a control module;

60. a supernatant storage tank;

70. and (4) an air-entrapping device.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Now it is right the utility model provides a pair of coagulating basin and sediment surplus water treatment facilities explain.

Referring to fig. 1 to 4, the coagulation tank includes a tank body 10, a chemical feeding device 20, a first stirring mechanism 30 and a buffer tank 40, wherein a mixing water inlet 11 for introducing water to be treated is formed at the lower part of the tank body 10; the medicine adding device 20 is connected with the tank body 10 and communicated with the lower part of the tank body 10 and is used for adding medicine into the tank body 10 to form a mixed solution; the first stirring mechanism 30 is arranged on the tank body 10 and comprises a stirring part which is arranged in the middle of the tank body 10 and is used for stirring the mixed liquid in the tank body 10; the buffer tank 40 is arranged in the tank body 10 and is positioned at one side or one corner of the upper part of the tank body 10, the middle part of the buffer tank is provided with a coagulation water inlet 41 communicated with the inside of the tank body 10, the upper part of the buffer tank is provided with a supernatant outlet 42 used for discharging supernatant, and the lower part of the buffer tank is provided with a turbid liquid outlet 43 used for discharging turbid liquid with sediments.

When using, the water that treats lets in and utilizes charge device 20 to add the medicine from cell body 10 lower part, stirs through the first rabbling mechanism 30 in cell body 10 middle part, flows to cell body 10 upper portion, and then enters into buffer tank 40 through condensing water inlet 41, tentatively stews in buffer tank 40, makes a large amount of unnecessary gaseous effluviums, and contains less gaseous turbid liquid and discharge through turbid liquid export 43, gets into precipitation unit.

Compared with the prior art, the utility model provides a coagulation tank, through setting up the lower part and intaking into medicine, the middle part stirring, the cell body 10 that upper portion flows, make the water in the cell body 10 flow from bottom to top, can make the water of adding medicine all obtain intensive mixing through first rabbling mechanism 30, and be difficult to mix extra air, and through setting up baffle-box 40, make the water after the stirring obtain preliminary stewing before flowing into the precipitation unit through turbid liquid export 43, make the unnecessary gas loss of aquatic adulteration go out, make the pipeline of being connected with turbid liquid export 43 can carry more water, be favorable to reducing the work burden of pipeline and precipitation unit; meanwhile, the buffer tank 40 is arranged in the pool body 10 and is positioned at one side or one corner of the upper part of the pool body 10, so that the cross sections of the upper part and the lower part of the pool body 10 are different in shape, the flow state generated by stirring in the water body is destroyed, more turbulence is generated, the energy dissipation effect is achieved, and the standing in the buffer tank 40 is facilitated; finally, the comprehensive action is beneficial to the miniaturization of the coagulation tank and the sedimentation unit and the improvement of the treatment efficiency.

Referring to fig. 1 to 3, as a specific embodiment of the coagulation tank of the present invention, the chemical adding device 20 includes a chemical liquid storage tank 21, a second stirring mechanism 22, a chemical delivery pipeline 23 and a chemical adding control component 24, wherein the chemical liquid storage tank 21 is used for storing a chemical liquid; the second stirring mechanism 22 is arranged on the chemical liquid storage tank 21 and is used for stirring the chemical liquid in the chemical liquid storage tank 21; the medicine conveying pipeline 23 is used for communicating the medicine liquid storage tank 21 with the tank body 10; the medicine adding control assembly 24 is arranged on the medicine conveying pipeline 23 and is used for controlling the amount of the liquid medicine passing through the medicine conveying pipeline 23. Specifically, the medicated control assembly 24 may be a control valve or a liquid pump.

Referring to fig. 2 and 3 together, as a specific embodiment of the coagulation basin provided by the present invention, the chemical feeding device 20 has a plurality of groups; be equipped with pipeline mixer 12 on mixing water inlet 11, the defeated medicine pipeline 23 of at least a set of charge device 20 is connected with pipeline mixer 12's input to further promote the homogeneity of mixing through pipeline mixer 12, improve stirring mixing efficiency, also be favorable to controlling the medicine order simultaneously.

The physical and chemical reactions occur in the coagulation tank, and the coagulant is added into the water in the coagulation tank to coagulate the colloid and the fine suspended matters in the wastewater into floccules, so that the sensory indexes of the water quality such as turbidity and chromaticity of the raw water can be reduced, various toxic and harmful pollutants can be removed, and the purpose of removing the suspended pollutants is achieved. What the coagulating basin added is PAC and PAM, specifically is polyaluminium chloride and polyacrylamide, is the coagulant, promotes the colloidal substance in aquatic to gather into large granule (flocculating constituent), gets rid of (not filtering in this scheme, only has the sediment) through precipitation, filterable mode, also can add the spent acid simultaneously to adjust the pH valve, consequently can set up multiunit charge device 20. After the coagulant is added to the wastewater, the colloid is reduced or eliminated in potential, and the stable state of the particles is destroyed (called destabilization). Further, destabilized particles aggregate to each other as larger particles (coacervation), and non-destabilized colloids can also form larger particles (flocculation), eventually forming a precipitate.

Referring to fig. 3 and 4, as a specific embodiment of the coagulation tank provided by the present invention, the stirring portion is a stirring blade 33, the first stirring mechanism 30 further includes a power assembly 31 and a rotating shaft 32, the power assembly 31 is disposed at the upper portion of the tank body 10 for outputting power; the rotating shaft 32 is a cylindrical structure with smooth surface to avoid increasing the kinetic energy of water on the upper part of the tank body 10, one end of the rotating shaft is connected with the power output end of the power assembly 31, and the other end of the rotating shaft extends into the tank body 10 and is connected with the stirring blades 33. The second stirring mechanism 22 of the drug adding device 20 may have the same structure as the first stirring mechanism 30.

Referring to fig. 2, as a specific embodiment of the coagulation tank provided by the present invention, the coagulation tank further includes an air-entrapping device 70, and the air-entrapping device 70 is connected to a lower portion of the tank body 10 and is used for introducing air or oxygen into the tank body 10 for aeration.

Referring to fig. 2, as a specific embodiment of the coagulation basin of the present invention, a supernatant outlet 42 for discharging supernatant is provided at an upper portion of the buffer tank 40.

The buffer tank 40 is arranged to perform preliminary standing and precipitation on the water after the dosing and mixing, so that part of supernatant in the water is separated out, the water quantity to be processed by a subsequent precipitation unit is reduced, the burden of the precipitation unit can be reduced, the precipitation efficiency is improved, the working capacity of the precipitation unit is favorably reduced, and the precipitation unit is easier to miniaturize; meanwhile, through the arrangement of the pool body 10 with the lower part for feeding water and adding drugs, the middle part for stirring and the upper part for flowing out, the water in the pool body 10 flows from bottom to top, the fed water can be fully stirred by the first stirring mechanism 30, more air is not easy to be mixed, the water treatment efficiency is favorably improved, and precipitates formed after stirring can be finally and completely brought to the buffer tank 40 by water flow without being deposited at the lower part of the pool body 10; in addition, the buffer tank 40 is arranged in the tank body 10 and is positioned at one side or one corner of the upper part of the tank body 10, so that the cross-sectional shapes of the upper part and the lower part of the tank body 10 are different, the flow state generated by stirring in the water body is destroyed, more turbulence is generated, the effect of energy dissipation is achieved, the standing sedimentation in the buffer tank 40 is facilitated, and the output of the supernatant is further improved; finally, through the comprehensive action, the volume ratio of the sedimentation unit to the coagulation tank can be further reduced, the miniaturization of the coagulation tank and the sedimentation unit is more facilitated, and the treatment efficiency and the treatment effect are improved.

Referring to fig. 2, as a specific embodiment of the coagulation basin provided by the present invention, a water-blocking energy-dissipating plate 44 for blocking the movement of water flow in the basin 10 is disposed on the outer wall of the side of the buffer box 40; the water-blocking energy dissipation plate 44 is arranged at an included angle with the outer wall of the buffer box 40, and the plate surface is parallel to the rotating shaft of the stirring part, so that the energy dissipation effect is improved. The water-blocking energy dissipation plate 44 can dissipate energy of water at the upper part of the pool body 10, so that the water flowing into the buffer tank 40 has smaller kinetic energy, standing and sedimentation in the buffer tank 40 are facilitated, and the output of supernatant is further improved.

Referring to fig. 5, as a specific embodiment of the coagulation basin provided by the present invention, the buffer tank 40 is further provided with a lifting baffle 45, a buoyancy component 46 and a counterweight component 47, the lifting baffle 45 is connected with the supernatant outlet 42 in a vertical sliding manner, and is used for partially shielding the supernatant outlet 42; the buoyancy assembly 46 is connected with the lifting baffle 45 and is used for driving the lifting baffle 45 to descend along with the descending of the water level in the buffer tank 40; a weight assembly 47 is coupled to or integrally provided with the elevating flap 45 for providing a force to drive the elevating flap 45 to move downward.

Because the speed of deposiing in buffer tank 40 is certain, consequently supernatant output proportion and efficiency are also certain, and set up lift baffle 45 and be favorable to keeping the supernatant outflow invariable, avoid not deposiing complete water along with the supernatant outflow.

Referring to fig. 2, as a specific embodiment of the coagulation tank provided by the present invention, the coagulation tank further includes a water level adjusting mechanism for adjusting the water level in the tank body 10. Specifically, the water level adjusting mechanism may include a water level monitoring module 51, a variable frequency water pump 52 and a control module 53, wherein the water level monitoring module 51 is used for monitoring the water level in the pool body 10; the variable frequency water pump 52 is connected with the mixing water inlet 11 and is used for injecting water to be treated into the pool body 10; the control module 53 is electrically connected to the water level monitoring module 51, the variable frequency water pump 52 and the control valve or the liquid pump as the dosing control assembly 24, and is configured to receive the signal from the water level monitoring module 51, control the water delivery efficiency of the variable frequency water pump 52 according to the signal, and control dosing.

Referring to fig. 1 to 4, as an embodiment of the coagulation tank provided by the present invention, the coagulation tank further includes a supernatant storage tank 60 connected to the supernatant outlet 42, so as to facilitate collection of the supernatant, and the tank body 10 and the drug adding device 20 are disposed on the upper portion of the supernatant storage tank 60 in parallel, so that the overall structure is more compact, which is beneficial to reducing the overall volume, and at the same time, the supernatant storage tank 60 has a volume as large as possible.

Referring to fig. 1 and 2, the present invention provides a device for treating residual water from bottom mud, which comprises the coagulation tank.

The utility model provides a sediment surplus water treatment facilities compares with prior art, can make water treatment facilities by miniaturized back, still can guarantee higher treatment effeciency and better treatment, is fit for the processing to the sediment surplus water more.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A coagulation basin, comprising:

the lower part of the tank body (10) is provided with a mixed water inlet (11) for introducing water to be treated;

the medicine adding device (20) is connected with the tank body (10), is communicated with the lower part of the tank body (10) and is used for adding medicine into the tank body (10) to form a mixed solution;

the first stirring mechanism (30) is arranged on the tank body (10) and comprises a stirring part which is arranged in the middle of the tank body (10) and is used for stirring the mixed liquid in the tank body (10); and

buffer tank (40) establish in cell body (10) and be located one side or one corner on cell body (10) upper portion, the middle part be equipped with the inside water inlet (41) that condenses of cell body (10), the lower part is equipped with turbid liquid export (43) that are used for discharging the turbid liquid of taking the precipitate.

2. Coagulation basin according to claim 1, characterized in that said dosing means (20) comprise:

a liquid medicine tank (21) for storing liquid medicine;

a second stirring mechanism (22) which is provided on the chemical liquid storage tank (21) and is used for stirring the chemical liquid in the chemical liquid storage tank (21);

a drug delivery pipeline (23) for communicating the drug solution storage tank (21) with the tank body (10); and

and the medicine adding control assembly (24) is arranged on the medicine conveying pipeline (23) and is used for controlling the amount of the liquid medicine passing through the medicine conveying pipeline (23).

3. The coagulation basin of claim 2, wherein: the medicine adding device (20) is provided with a plurality of groups; a pipeline mixer (12) is arranged on the mixing water inlet (11), and the medicine conveying pipelines (23) of at least one group of medicine adding devices (20) are connected with the input end of the pipeline mixer (12); the dosing control assembly (24) is a control valve or a liquid pump; the stirring part is a stirring blade (33), and the first stirring mechanism (30) further comprises:

the power assembly (31) is arranged at the upper part of the tank body (10) and is used for outputting power; and

the rotating shaft (32) is of a cylindrical structure with a smooth appearance, one end of the rotating shaft is connected with the power output end of the power assembly (31), and the other end of the rotating shaft extends into the tank body (10) and is connected with the stirring blades (33).

4. The coagulation basin of claim 1, further comprising:

and the air-entrapping device (70) is connected with the lower part of the tank body (10) and is used for introducing air or oxygen into the tank body (10) for aeration.

5. The coagulation basin of claim 1, wherein: the upper part of the buffer tank (40) is provided with a supernatant outlet (42) for discharging supernatant.

6. The coagulation basin according to claim 5, wherein the buffer tank (40) is further provided with:

the lifting baffle (45) is connected with the supernatant outlet (42) in a sliding mode in the vertical direction and is used for partially shielding the supernatant outlet (42);

the buoyancy component (46) is connected with the lifting baffle (45) and is used for driving the lifting baffle (45) to descend along with the descending of the water level in the buffer tank (40); and

and the counterweight component (47) is connected with or integrally arranged with the lifting baffle plate (45) and is used for providing a force for driving the lifting baffle plate (45) to move downwards.

7. The coagulation basin according to claim 1 or 5, wherein the outer wall of the side part of the buffer tank (40) is provided with a water-blocking energy-dissipating plate (44) for blocking the movement of water flow in the basin body (10); the water-blocking energy dissipation plate (44) and the outer wall of the buffer box (40) are arranged in an included angle; the surface of the water-blocking energy dissipation plate (44) is parallel to the direction of the rotating shaft of the stirring part.

8. The coagulation basin according to claim 1, further comprising a water level adjustment mechanism for adjusting a water level within the basin body (10), the water level adjustment mechanism comprising:

the water level monitoring module (51) is used for monitoring the water level in the tank body (10);

the variable-frequency water pump (52) is connected with the mixed water inlet (11) and is used for injecting water to be treated into the tank body (10); and

and the control module (53) is respectively electrically connected with the water level monitoring module (51) and the variable-frequency water pump (52) and is used for receiving the signal of the water level monitoring module (51) and controlling the water delivery efficiency of the variable-frequency water pump (52) according to the signal.

9. The coagulation basin of claim 5, further comprising:

the supernatant storage tank (60) is connected with the supernatant outlet (42), and the tank body (10) and the medicine adding device (20) are arranged on the upper part of the supernatant storage tank (60) in parallel.

10. The utility model provides a surplus water treatment facilities of bed mud which characterized in that: comprising a coagulation basin according to any one of claims 1 to 9.

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