Coagulative precipitation tank capable of conveniently discharging liquids with different liquid levels

Abstract

The utility model relates to a coagulative precipitation tank convenient to discharge liquids at different liquid levels, which belongs to the field of coagulative precipitation tanks and comprises a tank body, a discharge mechanism convenient to discharge liquids at different liquid levels is arranged on the outer side of the tank body, and an adding mechanism convenient to add coagulant is arranged on the outer side of the tank body. The discharge mechanism comprises a top supernatant drain pipe communicated with the outer side of the tank body, and five bottom supernatant drain pipes are communicated with the outer side of the tank body and located below the top supernatant drain pipe from top to bottom. According to the coagulative precipitation tank capable of conveniently discharging the liquid at different liquid levels, the liquid at different liquid levels can be flexibly selected to be discharged by arranging the discharging mechanism and a plurality of water discharging pipes at different heights, different treatment requirements are met, the discharging amount and the discharging speed are accurately controlled through an arranged slipknot ball valve, the treatment process is optimized, and the water quality is improved; through the design of a plurality of drainage pipes, the supernate and the sediment can be effectively separated, and the separation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coagulation sedimentation tanks, in particular to a coagulation sedimentation tank which is convenient for discharging liquids at different liquid levels. Background Art

[0002] The coagulation sedimentation tank is a common water treatment facility, which is mainly used to remove suspended solids, colloidal particles and certain dissolved substances in water through physical and chemical methods. Coagulants (such as aluminum salts, iron salts, etc.) are added to the water. These coagulants can combine with suspended particles in the water to form larger flocs.

[0003] A coagulation sedimentation tank disclosed in Chinese patent announcement number (CN203355383U) comprises a coagulation tank and a sedimentation tank, wherein the water outlet of the coagulation tank is connected with the water inlet of the sedimentation tank; according to the water flow direction, the coagulation tank is provided with a flocculant mixing zone and a flocculation zone in sequence, and both the flocculant mixing zone and the flocculation zone are provided with a stirring device; a water inlet and a water outlet are provided at the upper part of the wall of the sedimentation tank, respectively, and a sludge outlet is provided at the bottom of the wall on the same side as the water outlet; a baffle is provided in the sedimentation tank, which divides the sedimentation tank into an upper clear water zone and a lower sedimentation zone, and the water inlet is connected to the sedimentation zone through a pipeline; the water outlet of the sedimentation tank is located in the clear water zone, and the sludge outlet is located in the sedimentation zone, and the water outlet of the clear water zone in the sedimentation tank of the coagulation sedimentation tank is located at the upper part of the sedimentation tank, which can effectively improve the sedimentation efficiency, and at the same time, a stirring device can be provided at the bottom of the sedimentation tank to accelerate the water flow of the sedimentation tank, fully utilize every corner of the sedimentation tank, greatly improve the volume utilization rate, and achieve better treatment effect.

[0004] However, as in the above patents, there is still a problem that it is inconvenient to discharge liquids at different liquid levels. When pre-treating the leachate by coagulation and sedimentation, due to its complex composition, huge changes in water quality and water volume, high concentrations of organic matter and ammonia nitrogen, high concentrations of suspended solids, imbalanced ratios of microbial nutrients, etc., the supernatant of the effluent from the conventional coagulation and sedimentation tank fluctuates greatly due to the influent flow rate, water quality fluctuations, insufficient coagulant reaction, too low DO value of raw water, and rapid anaerobic fermentation of sludge at the bottom of the tank. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a coagulation sedimentation tank which is convenient for discharging liquids at different liquid levels, and has the advantages of conveniently discharging liquids at different liquid levels, thereby solving the problem in the prior art that it is inconvenient to discharge liquids at different liquid levels.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coagulation sedimentation tank for conveniently discharging liquids at different liquid levels, comprising a tank body, a discharge mechanism for conveniently discharging liquids at different liquid levels is provided on the outside of the tank body, and an adding mechanism for conveniently adding a coagulant is provided on the outside of the tank body;

[0007] The discharge mechanism includes a top supernatant liquid drain pipe connected to the outside of the pool body, and five bottom supernatant liquid drain pipes are distributed and connected from top to bottom on the outside of the pool body and below the top supernatant liquid drain pipe. The bottom end of the top supernatant liquid drain pipe is connected to a first slipknot ball valve, and the bottom of the first slipknot ball valve is connected to large and small head pipes, and the bottom ends of the large and small head pipes are connected to a main pipe, and one end of the five bottom supernatant liquid drain pipes away from the pool body is connected to the outside of the main pipe, and a second slipknot ball valve is fixed to the outside of the five bottom supernatant liquid drain pipes.

[0008] Furthermore, the diameters of the top supernatant liquid drain pipe and the bottom supernatant liquid drain pipe are equal.

[0009] Furthermore, the five bottom supernatant liquid drain pipes and the top supernatant liquid drain pipe are all located in the same plane.

[0010] Furthermore, the adding mechanism includes a proportioning tank fixed on the outside of the pool body, a flow guide cover is fixed to the bottom of the proportioning tank, the bottom end of the flow guide cover is connected to an extraction pipe, a delivery pump is fixed to the outside of the pool body, the output end of the delivery pump is connected to a feeding pipe, and a stirring element for improving mixing and sedimentation is provided between the upper and lower inner walls of the pool body.

[0011] Furthermore, the stirring member includes a rotating shaft that is rotatably connected between the upper and lower inner walls of the pool body, a plurality of stirring shafts are fixed on the outside of the rotating shaft, paddles are fixed on the upper and lower sides of the stirring shaft, a mixing motor is fixed on the upper surface of the pool body, and the outer side of the output shaft of the mixing motor is fixed to the rotating shaft.

[0012] Furthermore, the top end of the extraction pipe is connected to the input end of the delivery pump, and the bottom end of the feed pipe penetrates and extends to the inner top wall of the pool body.

[0013] Furthermore, the plurality of stirring shafts are evenly distributed along the length direction of the rotating shaft.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. This coagulation sedimentation tank is convenient for discharging liquids at different liquid levels. By setting up a discharge mechanism and multiple drain pipes at different heights, it can flexibly choose to discharge liquids at different liquid levels to adapt to different treatment needs and operating conditions. The equipped slipknot ball valve allows precise control of the discharge volume and discharge speed, which helps to optimize the treatment process and improve water quality. Through the design of multiple drain pipes, it can achieve effective separation of supernatant and sediment and improve separation efficiency.

[0016] 2. The coagulation sedimentation tank is convenient for discharging liquids at different liquid levels. By setting up an adding mechanism, the use of a proportioning tank can ensure the accurate ratio of coagulant and water and improve the coagulation effect. The design of the delivery pump and related pipelines can realize the automatic addition of coagulant, reduce manual operation and improve efficiency. The design of the stirring piece helps to evenly distribute the coagulant in the water and improve the coagulation and sedimentation effect. The stirring action of the stirring piece can accelerate the reaction between the coagulant and the suspended particles in the water and shorten the reaction time. The design of the adding mechanism allows the addition amount and stirring intensity of the coagulant to be adjusted according to actual needs to adapt to different water quality conditions. By accurately controlling the addition of coagulants, the risk of environmental pollution caused by excessive use can be reduced. The design of the stirring piece can improve the volume utilization rate of the sedimentation tank, so that every corner of the sedimentation tank can be fully utilized, thereby improving the overall treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the discharge mechanism of the utility model;

[0019] Figure 3 This is a schematic diagram of the adding mechanism of the utility model;

[0020] Figure 4 This is a partial schematic diagram of the adding mechanism of the utility model.

[0021] In the figure: 1 tank body, 2 discharge mechanism, 21 top supernatant drain pipe, 22 bottom supernatant drain pipe, 23 first slipknot ball valve, 24 main pipe, 25 second slipknot ball valve, 26 large and small head pipes, 3 adding mechanism, 31 proportioning tank, 32 guide cover, 33 extraction pipe, 34 delivery pump, 35 feeding pipe, 36 stirring element, 361 rotating shaft, 362 stirring shaft, 363 paddle, 364 mixing motor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 In this embodiment, a coagulation sedimentation tank which is convenient for discharging liquids at different liquid levels includes a tank body 1, a discharge mechanism 2 which is convenient for discharging liquids at different liquid levels is provided on the outside of the tank body 1, and an adding mechanism 3 which is convenient for adding coagulants is provided on the outside of the tank body 1.

[0024] See also Figure 2 In order to discharge liquids at different liquid levels, the discharge mechanism 2 in this embodiment includes a top supernatant liquid drain pipe 21 connected to the outside of the tank body 1. Five bottom supernatant liquid drain pipes 22 are distributed and connected from top to bottom on the outside of the tank body 1 and below the top supernatant liquid drain pipe 21. The liquid is discharged to the biochemical treatment system through valves with different liquid levels. According to the liquid level to be discharged, the operator can choose to use the top supernatant liquid drain pipe 21 or one of the bottom supernatant liquid drain pipes 22. The bottom end of the top supernatant liquid drain pipe 21 is connected to a first slipknot ball valve 23, and the bottom of the first slipknot ball valve 23 is connected to a large and small head pipe 26. The bottom end of the large and small head pipe 26 is connected to a main pipe 24. The ends of the five bottom supernatant liquid drain pipes 22 away from the tank body 1 are all connected to the outside of the main pipe 24. Second slipknot ball valves 25 are fixed to the outside of the five bottom supernatant liquid drain pipes 22. If it is necessary to discharge from the top, the operator will open the first slipknot ball valve 23. If it is necessary to discharge from the bottom, the operator will open the corresponding second slipknot ball valve 25.

[0025] In this embodiment, the diameters of the top supernatant drain pipe 21 and the bottom supernatant drain pipe 22 are equal. After opening the corresponding valves, the liquid will be discharged through the drain pipes. The top supernatant drain pipe 21 is connected to the large and small head pipes 26, and then discharged through the main pipe 24. The five bottom supernatant drain pipes 22 and the top supernatant drain pipe 21 are all located in the same plane, and the bottom supernatant drain pipe 22 is directly connected to the main pipe 24. After the discharge is completed, the operator will close the corresponding valve to stop the discharge.

[0026] See also Figure 3 to Figure 4 In order to add coagulant to the liquid in proportion, the adding mechanism 3 in this embodiment includes a proportioning tank 31 fixed on the outside of the pool body 1. The required coagulant is prepared in the proportioning tank 31 by measurement. The proportioning tank 31 can facilitate the operator to add the proportioning coagulant at a height that is convenient for operation. A flow guide hood 32 is fixed to the bottom of the proportioning tank 31, and the bottom end of the flow guide hood 32 is connected to an extraction pipe 33. A delivery pump 34 is fixed to the outside of the pool body 1, and the output end of the delivery pump 34 is connected to a feeding pipe 35. The delivery pump 34 is started to prepare to deliver the coagulant from the proportioning tank 31 to the pool body 1. The coagulant is extracted by the delivery pump 34 through the flow guide hood 32 and the extraction pipe 33. A stirring member 36 for improving mixed sedimentation is provided between the upper and lower inner walls of the pool body 1. The delivery pump 34 delivers the coagulant to the pool body 1 through the feeding pipe 35, in order to improve the mixing efficiency of the coagulant and water.

[0027] The stirring member 36 includes a rotating shaft 361 connected between the upper and lower inner walls of the pool body 1 by a bearing, a plurality of stirring shafts 362 are fixed to the outside of the rotating shaft 361, and paddles 363 are fixed to the upper and lower sides of the stirring shaft 362. A mixing motor 364 is fixed to the upper surface of the pool body 1, and the outer side of the output shaft of the mixing motor 364 is fixed to the rotating shaft 361. In order to improve the mixing efficiency of the coagulant and water, the stirring member 36 is started, and the rotating shaft 361 and the stirring shaft 362 are driven by the mixing motor 364, so that the paddles 363 stir the liquid to promote the mixing of the coagulant and water.

[0028] In this embodiment, the top end of the extraction pipe 33 is connected to the input end of the delivery pump 34, the bottom end of the feed pipe 35 passes through and extends to the inner top wall of the pool body 1, and a plurality of stirring shafts 362 are evenly distributed along the length direction of the rotating shaft 361. During the process of adding coagulant, the operator needs to monitor the mixing effect and adjust the working status of the delivery pump 34 and the stirring element 36 as needed. When the coagulant is added to an appropriate amount, the delivery pump 34 and the stirring element 36 are turned off.

[0029] The working principle of the above embodiment is:

[0030] (1) When discharging liquids at different liquid levels, after long-term small-scale and pilot tests on the landfill leachate, a one-time coagulant addition method is adopted. After the coagulant reacts fully, it is left to stand for 20-30 minutes, and the surface layer of the middle supernatant containing fine suspended matter is discharged into the sludge pool together with the floccules in the lower layer, and discharged into the biochemical treatment system through valves at different liquid levels. According to the liquid level to be discharged, the operator can choose to use the top supernatant drain pipe 21 or one of the bottom supernatant drain pipes 22. If it is necessary to discharge from the top, the operator will open the first slipknot ball valve 23. If it is necessary to discharge from the bottom, the operator will open the corresponding second slipknot ball valve 25. After opening the corresponding valve, the liquid will be discharged through the drain pipe. The top supernatant drain pipe 21 is connected to the large and small head pipes 26, and then discharged through the main pipe 24. The bottom supernatant drain pipe 22 is directly connected to the main pipe 24. After the discharge is completed, the operator will close the corresponding valve to stop the discharge.

[0031] (2) When adding coagulant to the liquid, the required coagulant is first prepared in the proportioning tank 31 by measurement. The proportioning tank 31 allows the operator to add the proportioned coagulant at a height that is convenient for operation. The delivery pump 34 is started to prepare to deliver the coagulant from the proportioning tank 31 to the tank body 1. The coagulant is extracted by the delivery pump 34 through the deflector 32 and the extraction pipe 33. The delivery pump 34 delivers the coagulant to the tank body 1 through the feed pipe 35. In order to improve the mixing efficiency of the coagulant and water, the stirring element 36 is started. The mixing motor 364 drives the rotating shaft 361 and the stirring shaft 362, so that the paddle 363 stirs the liquid to promote the mixing of the coagulant and water. During the process of adding the coagulant, the operator needs to monitor the mixing effect and adjust the working status of the delivery pump 34 and the stirring element 36 as needed. When the coagulant is added to an appropriate amount, the delivery pump 34 and the stirring element 36 are turned off.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] The standard parts used in this application document can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in this field. Therefore, this application document will no longer explain the control method and circuit connection in detail.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A coagulation sedimentation tank for conveniently discharging liquids at different liquid levels, comprising a tank body (1), characterized in that: The outer side of the tank body (1) is provided with a discharge mechanism (2) for conveniently discharging liquids at different liquid levels, and the outer side of the tank body (1) is provided with an addition mechanism (3) for conveniently adding a coagulant; The discharge mechanism (2) comprises a top supernatant liquid drain pipe (21) connected to the outside of the tank body (1); five bottom supernatant liquid drain pipes (22) are distributed and connected from top to bottom on the outside of the tank body (1) and below the top supernatant liquid drain pipe (21); the bottom end of the top supernatant liquid drain pipe (21) is connected to a first slipknot ball valve (23); the bottom of the first slipknot ball valve (23) is connected to large and small head pipes (26); the bottom ends of the large and small head pipes (26) are connected to a main pipe (24); the ends of the five bottom supernatant liquid drain pipes (22) away from the tank body (1) are all connected to the outside of the main pipe (24); and the outsides of the five bottom supernatant liquid drain pipes (22) are all fixed with a second slipknot ball valve (25).

2. A coagulation sedimentation tank for conveniently discharging liquids at different liquid levels according to claim 1, characterized in that: The diameters of the top supernatant liquid drain pipe (21) and the bottom supernatant liquid drain pipe (22) are equal.

3. A coagulation sedimentation tank for conveniently discharging liquids at different liquid levels according to claim 1, characterized in that: The five bottom supernatant liquid drainage pipes (22) and the top supernatant liquid drainage pipe (21) are all located in the same plane.

4. A coagulation sedimentation tank for conveniently discharging liquids at different liquid levels according to claim 1, characterized in that: The adding mechanism (3) comprises a proportioning tank (31) fixed on the outside of the tank body (1), a flow guide cover (32) fixed on the bottom of the proportioning tank (31), the bottom end of the flow guide cover (32) is connected to an extraction pipe (33), a delivery pump (34) is fixed on the outside of the tank body (1), the output end of the delivery pump (34) is connected to a feed pipe (35), and a stirring element (36) for improving mixing and sedimentation is provided between the upper and lower inner walls of the tank body (1).

5. A coagulation sedimentation tank for conveniently discharging liquids at different liquid levels according to claim 4, characterized in that: The stirring member (36) comprises a rotating shaft (361) rotatably connected between the inner walls of the upper and lower sides of the pool body (1) by means of a bearing, a plurality of stirring shafts (362) are fixed on the outer side of the rotating shaft (361), and paddles (363) are fixed on the upper and lower sides of the stirring shaft (362). A mixing motor (364) is fixed on the upper surface of the pool body (1), and the outer side of the output shaft of the mixing motor (364) is fixed to the rotating shaft (361).

6. A coagulation sedimentation tank for conveniently discharging liquids at different liquid levels according to claim 4, characterized in that: The top end of the extraction pipe (33) is connected to the input end of the delivery pump (34), and the bottom end of the feed pipe (35) penetrates and extends to the inner top wall of the tank body (1).

7. A coagulation sedimentation tank for conveniently discharging liquids at different liquid levels according to claim 5, characterized in that: The plurality of stirring shafts (362) are evenly distributed along the length direction of the rotating shaft (361).

Images