A coagulation sedimentation tank

Abstract

The present invention relates to a coagulation sedimentation tank, comprising a first sedimentation part and a second sedimentation part, wherein the first sedimentation part comprises a first sedimentation chamber, a sewage inlet and a slag discharge port, a first separation device is arranged in the first sedimentation chamber, and the first separation device comprises an inclined tube filler and / or an inclined plate filler; the second sedimentation part comprises a second sedimentation chamber, the second sedimentation chamber is arranged above the first separation device, and a second separation device is arranged therein, and the second separation device comprises a horizontal pipe assembly, one end of the horizontal pipe assembly is connected to the first sedimentation chamber, and the other end is connected to a clean water outlet; the coagulation sedimentation tank has a compact structure and an ingenious design. On the one hand, the horizontal pipe assembly can be applied to the field of sewage coagulation and sedimentation with a high suspended matter content, and on the other hand, through the cooperation of the horizontal pipe assembly with the inclined tube filler and / or the inclined plate filler, not only the two can complement each other, but also the effects of small footprint, high sedimentation efficiency and stable effluent can be achieved while ensuring a high operating load.

Description

Technical Field

[0001] The invention relates to the technical field of sewage coagulation and sedimentation, and in particular to a coagulation and sedimentation tank. Background Art

[0002] As a commonly used wastewater treatment technology in the field of water treatment, coagulation and sedimentation technology is to add coagulants (or flocculants) to wastewater containing suspended solid particles or colloidal particles, and after sufficient mixing, the colloids are destabilized and coagulated to form large flocs. These flocs form sediments under the action of gravity, and finally achieve solid-liquid separation through physical sedimentation. From this, loading (sand and magnetic) sedimentation is derived and widely used in sewage treatment. As one of the key processes of coagulation and sedimentation technology, sedimentation directly determines the success or failure of the coagulation and sedimentation process.

[0003] At present, the coagulation and sedimentation process is usually carried out in a coagulation and sedimentation tank. Due to the problem of sludge discharge (i.e., when the suspended matter content in the sewage is too high, the sludge discharge is prone to be blocked), in the existing sewage coagulation and sedimentation technology field, horizontal tube sedimentation tanks (with horizontal tube components or horizontal tube fillers) are usually not used for coagulation and sedimentation, but inclined tube or inclined plate sedimentation tanks (with inclined tube fillers or inclined plate fillers) are usually used for coagulation and sedimentation, for example, the coagulation reaction sedimentation tank disclosed in Chinese patent CN211570314 U, the sedimentation tank disclosed in Chinese patent CN 210933913 U and the sedimentation tank disclosed in Chinese patent CN 107758909 A disclosed new type of comprehensive wastewater coagulation reaction sedimentation tank, etc., all use inclined tubes or inclined plates to achieve the purpose of sedimentation; however, there is usually a contradiction in the actual operation of the existing coagulation sedimentation tank, that is, when the operating load of the coagulation sedimentation tank (i.e., the surface load of the sedimentation tank) is large, the effluent will be unstable (i.e., the SS and total phosphorus in the effluent fluctuate greatly) and the impact resistance is poor; when the operating load of the coagulation sedimentation tank is small, there will be a problem of large floor space and low sedimentation efficiency, which needs to be solved urgently. Summary of the invention

[0004] The first aspect of the present invention is to solve the problem that the operating load of the coagulation sedimentation tank in the existing coagulation sedimentation process is inconsistent with the effluent effect and the occupied area, and to provide a coagulation sedimentation tank with high operating load, small occupied area, high sedimentation efficiency and stable effluent. The main concept is:

[0005] A coagulation sedimentation tank comprises a first sedimentation part, wherein the first sedimentation part comprises a first sedimentation chamber, a sewage inlet connected to the first sedimentation chamber, and a slag discharge port connected to the first sedimentation chamber, wherein a first separation device is arranged in the first sedimentation chamber, and the first separation device comprises an inclined tube filler and / or an inclined plate filler;

[0006] And a second sedimentation part, the second sedimentation part includes a second sedimentation chamber, the second sedimentation chamber is arranged above the first separation device to form a double-layer structure; a second separation device is arranged in the second sedimentation chamber, the second separation device includes a horizontally arranged horizontal pipe assembly, one end of the horizontal pipe assembly is connected to the first sedimentation chamber, and the other end is connected to the clean water outlet. In the present solution, by constructing a first sedimentation section, the first sedimentation section includes a first sedimentation chamber, and a first separation device composed of an inclined tube filler and / or an inclined plate filler is installed in the first sedimentation chamber, so that the first sedimentation section can play the role of an inclined tube sedimentation tank or an inclined plate sedimentation tank, realize the separation and sedimentation functions of suspended matter in sewage, and solve the problem of preliminary purification of sewage and reduction of suspended matter content in sewage; by constructing a second sedimentation section, the second sedimentation section includes a second sedimentation chamber, and a horizontal pipe assembly is installed in the second sedimentation chamber, so that the second sedimentation section can use the horizontal pipe assembly to further separate and precipitate suspended matter in sewage, solve the problem of further purifying sewage by using the shallow filtration principle, so that the purified sewage can meet the discharge standards; by arranging the second sedimentation chamber above the first separation device, and making the horizontal pipe assembly in the second sedimentation chamber communicate with the first sedimentation chamber, so that the inclined tube filler and / or the inclined plate filler are connected to ... The filler and the horizontal pipe assembly can be used in combination to achieve secondary sedimentation. With such a design, on the one hand, the first sedimentation chamber can effectively reduce the suspended solids content of the influent water, and allow the sewage with reduced suspended solids content to enter the second sedimentation chamber, thereby solving the problem that when the suspended solids content in the sewage is too high, it is easy to cause the horizontal pipe assembly to discharge mud smoothly, and then solve the problem that the horizontal pipe assembly is not suitable for coagulation and sedimentation; on the other hand, it is beneficial to reduce the footprint and make the overall structure more compact; in addition, since the rear end of the first sedimentation section is provided with a horizontal pipe assembly, in actual operation, the first sedimentation section provided with inclined tube fillers and / or inclined plate fillers does not need to consider the water outlet effect and reduce part of the performance, so that the first sedimentation section and the second sedimentation section can complement each other, thereby achieving the effects of high operating load, small footprint, high sedimentation efficiency and stable water outlet, thereby effectively solving the contradictions existing in the prior art.

[0007] To facilitate the discharge of mud / slag, preferably, the slag discharge port is constructed at the bottom of the first sedimentation chamber, so as to utilize the effect of gravity to discharge the mud / slag from the bottom of the first sedimentation chamber.

[0008] In order to solve the problem of joint mud / slag discharge of the first sedimentation part and the second sedimentation part, it further includes a guide tube, which is arranged in the first sedimentation chamber, the upper end of the guide tube is connected to the bottom of the second sedimentation chamber, and the lower end of the guide tube passes through the first separation device and corresponds to the bottom of the first sedimentation chamber. In the present scheme, during the actual operation, the mud / slag precipitated / separated in the first sedimentation section will accumulate at the bottom of the first sedimentation chamber due to the action of gravity, and thus can be discharged through the slag discharge port constructed at the bottom of the first sedimentation chamber; the mud / slag precipitated / separated in the second sedimentation section will also accumulate at the bottom of the second sedimentation chamber due to the action of gravity, by constructing a guide tube, and making the upper end of the guide tube communicate with the bottom of the second sedimentation chamber, the lower end of the guide tube extends to a position close to the bottom of the first sedimentation chamber after passing through the first separation device, and corresponds to the bottom of the first sedimentation chamber, so that the mud / slag accumulated at the bottom of the second sedimentation chamber can be directly precipitated to the bottom of the first sedimentation chamber under its own gravity and the guiding action of the guide tube, which not only makes the mud / slag precipitated / separated in the second sedimentation section can be discharged together with the mud / slag precipitated / separated in the first sedimentation section, but also helps to simplify the structure, reduce costs, and reduce floor space, and is particularly conducive to efficient discharge of the mud / slag precipitated / separated in the second sedimentation section.

[0009] Preferably, the guide tube is installed vertically, which is conducive to the rapid falling of the mud / slag settled in the second sedimentation part, and is conducive to achieving efficient sedimentation, and is also conducive to preventing the guide tube from being blocked, thereby solving the blockage problem.

[0010] Preferably, the guide tube is a cylindrical structure.

[0011] In order to prevent the mud / slag that quickly settles from the guide tube from impacting the mud / slag accumulated at the bottom of the first sedimentation chamber, the lower end of the guide tube is further configured in a trumpet shape. By configuring the lower end of the guide tube in a trumpet shape, the mud / slag that settles in the guide tube can be diverted and decelerated, thereby effectively preventing the mud / slag from quickly settling from the guide tube and directly impacting the mud / slag accumulated at the bottom of the first sedimentation chamber, causing the mud / slag at the bottom to be turbulent, back-mixed, and other problems, thereby affecting the discharge of the mud / slag.

[0012] In order to solve the problem of automatic gathering of mud / slag in the first sedimentation part, preferably, the bottom of the first sedimentation chamber is constructed as a conical structure, and a mud collecting groove is also constructed at the center of the bottom of the first sedimentation chamber, and the slag discharge port is constructed on the side wall of the mud collecting groove;

[0013] The lower end of the guide tube corresponds to the mud collecting trough. By configuring the bottom of the first sedimentation chamber to be a conical structure, the mud / slag deposited at the bottom of the first sedimentation chamber can automatically gather in the mud collecting trough at the center under the action of its own gravity; at the same time, the mud / slag settled from the guide tube can also automatically gather in the mud collecting trough under the action of its own gravity, and finally be discharged through the slag discharge port.

[0014] In order to solve the problem that the mud / slag settled in the second sedimentation part automatically gathers to the guide tube, further, the bottom of the second sedimentation chamber is constructed as a conical structure. By constructing the bottom of the second sedimentation chamber as a conical structure, the mud / slag settled at the bottom of the second sedimentation chamber can automatically gather to the guide tube under the action of its own gravity, so as to continue to settle downward through the guide tube.

[0015] In order to solve the problem of water distribution, further, a diversion channel is included, through which the first sedimentation chamber is connected to one end of the horizontal pipe assembly. The diversion channel plays the role of drainage and water distribution, so that the sewage in the first sedimentation chamber can enter the horizontal pipe assembly after water distribution through the diversion channel.

[0016] In order to solve the problem of accelerating sedimentation and preventing blockage in the first sedimentation chamber, further, a mud scraping device is included, which includes a power source, a transmission shaft connected to the power source, and a first mud scraping mechanism adapted to the bottom of the first sedimentation chamber, wherein:

[0017] The transmission shaft vertically passes through the guide tube, the first scraping mechanism is installed on the transmission shaft and is located in the first sedimentation chamber, and the power source is used to drive the first scraping mechanism to rotate. By setting the first scraping mechanism and making it compatible with the bottom of the first sedimentation chamber, the first scraping mechanism can rotate at the bottom of the first sedimentation chamber under the drive of the power source, which can not only accelerate the sedimentation of mud / slag through rotation, facilitate efficient output of mud / slag, but also prevent blockage.

[0018] In order to solve the problem of accelerating sedimentation and preventing blockage in the second sedimentation chamber, the scraping device further includes a second scraping mechanism, which is arranged in the second sedimentation chamber and fixedly mounted on the transmission shaft, and the second scraping mechanism is adapted to the bottom of the second sedimentation chamber. In this solution, the second scraping mechanism can cooperate with the bottom of the second sedimentation chamber so as to accelerate the mud / slag to enter the guide tube by rotation, which can not only efficiently transport the mud / slag downward, but also prevent blockage; in addition, in the actual operation process, the power source can simultaneously drive the first scraping mechanism and the second scraping mechanism to rotate synchronously, so as to scrape the mud / slag in the first sedimentation chamber and the second sedimentation chamber at the same time, which is not only simple and compact in structure, but also conducive to reducing costs.

[0019] Preferably, the first scraping mechanism comprises a scraper frame and a scraper installed on the scraper frame, the scraper frame is installed on the transmission shaft, and there is a set distance between the scraper and the bottom of the first sedimentation chamber, so as to efficiently scrape the mud / slag.

[0020] Preferably, the second scraping mechanism comprises a scraper frame and a scraper installed on the scraper frame, the scraper frame is installed on the transmission shaft, and there is a set distance between the scraper and the bottom of the second sedimentation chamber, so as to efficiently scrape the mud / slag.

[0021] Preferably, the power source is a motor or a reducer.

[0022] Preferably, the power source is installed above the second sedimentation part.

[0023] In order to solve the problem of disinfecting the outlet water, a disinfection device is further included, one end of the horizontal pipe assembly is connected to the disinfection device, and the disinfection device is connected to the purified water outlet, so that the disinfection device can be used to sterilize and disinfect the purified water before discharge.

[0024] Preferably, the disinfection device is an ultraviolet disinfection device or a chemical disinfection device provided with a dosing port. For example, sodium hypochlorite can be added through the dosing port to achieve the purpose of water disinfection.

[0025] In order to solve the connection problem between the disinfection device and the horizontal pipe assembly, it further includes a disinfection box, which is configured with a disinfection chamber. The disinfection box is arranged on one side of the second sedimentation part, and the disinfection chamber is connected to one end of the horizontal pipe assembly. The disinfection device is arranged in the disinfection chamber, and the clean water outlet is configured in the disinfection box or the disinfection device.

[0026] To simplify the structure, further, the first sedimentation part further includes a first container, the first sedimentation chamber is constructed in the first container, and the sewage inlet is constructed on the side wall of the first container;

[0027] The second sedimentation part further includes a second container, the second container is arranged in the first container, the second container includes at least two side walls corresponding to each other and a bottom plate constructed below the side walls, the horizontal pipe assembly is arranged in the second container, and the two ends of the horizontal pipe assembly are respectively connected to the two side walls, and the two side walls are respectively constructed with mesh holes and communication holes;

[0028] One end of the diversion channel is connected to a side wall having mesh holes;

[0029] The upper end of the guide tube is connected to the bottom plate.

[0030] Preferably, the first container is of cylindrical structure, which is convenient for molding and for fitting the scraping device.

[0031] Preferably, the second container comprises four side walls, a top plate and a bottom plate, the side walls, the top plate and the bottom plate together form the second precipitation chamber, and the four side walls and the top plate together form a rectangular parallelepiped structure, and the bottom plate is a conical structure;

[0032] Or, the second container includes a box body and a receiving body, wherein the box body only includes side walls and a top plate, the box body is fixedly connected to the first container, and the horizontal pipe assembly is installed in the box body; the receiving body is arranged below the box body, the receiving body includes a cylindrical side wall, a bottom plate connected to the side wall and closing the lower end, and a top plate connected to the side wall, the box body is connected to the top plate, and the box body, the top plate, the side wall and the bottom plate together form the second sedimentation chamber.

[0033] Compared with the prior art, the coagulation sedimentation tank provided by the present invention has a compact structure and ingenious design. On the one hand, the horizontal pipe assembly can be applied to the field of sewage coagulation sedimentation with a high suspended matter content. On the other hand, through the coordination of the horizontal pipe assembly with the inclined pipe filler and / or the inclined plate filler, not only the two can complement each other, but also the high operating load can be ensured while achieving the effects of small footprint, high sedimentation efficiency and stable effluent, thereby effectively solving the technical contradictions existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 The present invention provides a front view schematic diagram of a coagulation sedimentation tank.

[0036] Figure 2 for Figure 1 Partial section view from right.

[0037] Figure 3 for Figure 1 Top view of the .

[0038] Figure 4 This is a schematic diagram of a coagulation sedimentation tank provided by the present invention during operation. In the figure, the hollow arrows represent the flow path of the water body, and the solid arrows represent the path of suspended matter sedimentation.

[0039] Description of symbols in the figure

[0040] First sedimentation part 100, first container 101, first sedimentation chamber 102, sewage inlet 103, first separation device 104, mud collecting tank 105, slag discharge port 106, mud discharge pipe 107, clean water outlet 108

[0041] The second sedimentation part 200, the second container 201, the second sedimentation chamber 202, the second separation device 203, the box 204, the receiving body 205, the side wall 206, the mesh 207, the connecting hole 208, the top plate 209, and the bottom plate 210

[0042] Diversion channel 300

[0043] Guide tube 400, trumpet 401

[0044] Disinfection box 500, disinfection device 501

[0045] Power source 600 , transmission shaft 601 , first mud scraping mechanism 602 , second mud scraping mechanism 603 . DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0047] Example 1

[0048] See also Figure 1-Figure 4 In this embodiment, a coagulation sedimentation tank is provided, including a first sedimentation part 100 and a second sedimentation part 200, wherein:

[0049] like Figure 1-Figure 3 As shown, the first sedimentation part 100 includes a first sedimentation chamber 102, a sewage inlet 103 connected to the first sedimentation chamber 102, and a slag discharge port 106 connected to the first sedimentation chamber 102. The slag discharge port 106 can be preferably constructed at the bottom of the first sedimentation chamber 102 so as to utilize gravity to discharge mud / slag from the bottom of the first sedimentation chamber 102. In this embodiment, the function of the first sedimentation chamber 102 is to provide a place for the initial sedimentation process of sewage. The shape of the first sedimentation chamber 102 can be determined according to actual needs. For example, Figure 1As shown, the first sedimentation part 100 further includes a first container 101, and the first sedimentation chamber 102 is constructed in the first container 101. At this time, the sewage inlet 103 can be directly constructed on the side wall of the first container 101, such as Figure 1 As shown, the first container 101 can preferably adopt a cylindrical structure. Of course, other shapes of cylinders or other shapes of structures can also be adopted. For example, it can also be a square cylindrical structure, other combined structures, etc., which will not be described one by one here; Figure 1 As shown, in a more complete solution, the bottom of the first container 101 is also provided with legs, which is convenient for installation and can leave operating space for the slag discharge port 106; in specific implementation, the first container 101 can be preferably made of steel plate or aluminum plate, or a reinforced concrete structure can be used.

[0050] In this embodiment, a first separation device 104 is arranged in the first sedimentation chamber 102 to strengthen the separation of suspended matter and water in the sewage. In a specific implementation, the first separation device 104 may include an inclined tube filler (or called an inclined tube) and / or an inclined plate filler (or called an inclined plate), and the inclined tube filler and the inclined plate filler may respectively adopt the inclined tube filler and the inclined plate filler commonly used in the prior art, that is, the first sedimentation part 100 may play the role of an inclined tube sedimentation tank or an inclined plate sedimentation tank, realize the separation and sedimentation functions of suspended matter in the sewage, and solve the problem of preliminary purification of sewage and reduction of the content of suspended matter in sewage.

[0051] like Figure 1-Figure 3 As shown, the second precipitation part 200 includes a second precipitation chamber 202, and the second precipitation chamber 202 is arranged above the first separation device 104. Figure 1 As shown, the function of the second sedimentation chamber 202 is to provide a place for the secondary sedimentation process of the sewage. In this embodiment, a second separation device 203 is provided in the second sedimentation chamber 202. Figure 1 As shown, the second separation device 203 includes a horizontally arranged horizontal pipe assembly, one end of which is connected to the first sedimentation chamber 102, and the other end is connected to the clean water outlet 108; as an example, the horizontal pipe assembly can adopt a horizontal pipe assembly commonly used in the prior art (or called a horizontal pipe or a horizontal pipe filler);

[0052] The shape of the second precipitation chamber 202 can be determined according to actual needs. For example, Figure 1As shown, the second sedimentation part 200 also includes a second container 201, which can be fixedly installed on the first container 101 or directly constructed on the first container 101, and the second container 201 is located above the first separation device 104 in the first container 101. As shown in the figure, the second container 201 includes at least two side walls 206 corresponding to each other and a bottom plate 210 constructed below the side walls 206. The horizontal pipe assembly is arranged in the second container 201, and the two ends of the horizontal pipe assembly can be respectively connected to the two side walls 206, so that one end of the horizontal pipe assembly can It is directly connected to the first sedimentation chamber 102, and the other end can be connected to the clean water outlet 108. During the initial operation, the sewage in the first sedimentation chamber 102 first enters the second sedimentation chamber 202 through one end of the horizontal pipe assembly, and the sewage flows out of the second container 201 along the horizontal pipe assembly and from the other end of the horizontal pipe assembly in the horizontal direction, while the separated suspended matter settles downward in the vertical direction to achieve the purpose of separation and purification; as shown in the figure, the horizontal pipe assembly is located above the bottom plate of the second container 201, and there is a set distance between the horizontal pipe assembly and the bottom plate 210 to provide space for sedimentation, such as Figure 1 shown.

[0053] The shape of the second container 201 can be determined according to actual needs and has multiple implementations. As an example, the second container 201 can include four side walls 206, a top plate and a bottom plate 210. The side walls 206, the top plate and the bottom plate 210 can together form the second precipitation chamber 202, and the four side walls and the top plate can together form a rectangular parallelepiped structure. The bottom plate 210 can be a conical structure, such as Figure 1 and Figure 2 As shown; as another example, the second container 201 includes a box body 204 and a receiving body 205, wherein the box body 204 only includes a side wall 206 and a top plate, and the box body 204 can be fixed to the first container 101. For example, the box body 204 can be fixed to the top plate and / or side wall of the first container 101, and the horizontal pipe assembly can be installed in the box body 204; the receiving body 205 is arranged below the box body 204 and communicates with the box body 204, and the two together enclose the second precipitation chamber 202, as shown Figure 1 and Figure 2 As shown, the receiving body 205 may include a cylindrical side wall 206, a bottom plate 210 connected to the side wall 206 and closing the lower end, and a top plate 209 connected to the side wall 206. The box body 204 may be connected to the top plate 209. Figure 2 As shown, the box body 204, the top plate 209, the side wall 206 and the bottom plate 210 can together enclose the second precipitation chamber 202. In this embodiment, the top plate 209 can also be the top plate 209 of the first container 101 that encloses the first precipitation chamber 102. Figure 3 shown.

[0054] Specifically, in this embodiment, the second sedimentation part 200 can use the horizontal pipe assembly to further separate and precipitate suspended matter in the sewage, so as to solve the problem of further purifying the sewage by using the shallow filtration principle so that the purified sewage can meet the discharge standards; and by arranging the second sedimentation chamber 202 above the first separation device 104, and making the horizontal pipe assembly in the second sedimentation chamber 202 connected to the first sedimentation chamber 102, the inclined tube filler and / or the inclined plate filler can be used in combination with the horizontal pipe assembly, and secondary sedimentation can be achieved, such as Figure 4 As shown, with such a design, on the one hand, the first sedimentation chamber 102 can effectively reduce the suspended solids content of the incoming water, and allow the sewage with reduced suspended solids content to enter the second sedimentation chamber 202, thereby solving the problem that when the suspended solids content in the sewage is too high, it is easy to cause the horizontal pipe assembly to discharge mud smoothly, and then solve the problem that the horizontal pipe assembly is not suitable for coagulation and sedimentation; on the other hand, it is beneficial to reduce the floor space and make the overall structure more compact; in addition, since the rear end of the first sedimentation section 100 is provided with a horizontal pipe assembly, in the actual operation process, the first sedimentation section 100 provided with an inclined tube filler and / or an inclined plate filler does not need to consider the water discharge effect By eliminating some performance, the first sedimentation section 100 and the second sedimentation section 200 can complement each other and give full play to the advantages of shallow filtration (Note: according to the principle of shallow filtration, the vertically placed inclined tube filler / inclined plate filler has the smallest interception capacity and the largest mud discharge capacity; the horizontally placed inclined tube and inclined plate have the largest interception capacity and the smallest mud discharge capacity. The inclined tube is placed at a certain angle to sacrifice the interception capacity and ensure the mud discharge capacity. This is why the horizontal tube assembly cannot be used for high suspended matter water treatment conditions), thereby achieving the effects of high operating load, small footprint, high sedimentation efficiency and stable effluent, thereby effectively solving the contradictions existing in the prior art.

[0055] To facilitate water distribution, Figure 1 and Figure 3 As shown, the coagulation sedimentation tank also includes a diversion channel 300, and the first sedimentation chamber 102 can be connected to one end of the horizontal pipe assembly through the diversion channel 300. At this time, the diversion channel 300 plays the role of drainage and water distribution, so that the sewage in the first sedimentation chamber 102 can enter the horizontal pipe assembly after water distribution through the diversion channel 300; the diversion channel 300 has a variety of implementation methods, which can be a separate pipeline, or it can be surrounded by the side wall of the first container 101 and the side wall 206 of the second container 201; in a more perfect solution, the side wall 206 at one end of the second container 201 is constructed with a plurality of meshes 207, such as Figure 1As shown, the mesh 207 is connected to the first sedimentation chamber 102 through the guide channel 300, and one end of the horizontal pipe assembly can be connected to the mesh 207, and through the cooperation of the mesh 207 and the guide channel 300, a better water distribution effect can be achieved; accordingly, the side wall 206 at the other end of the second container 201 is configured with a connecting hole 208, as shown in FIG. Figure 1 As shown, at this time, the other end of the horizontal pipe assembly can be set in the connecting hole 208, or can be connected to the connecting hole 208 to discharge the purified water.

[0056] Since in the actual operation process, the mud / slag precipitated / separated in the first sedimentation part 100 will accumulate at the bottom of the first sedimentation chamber 102 due to the effect of gravity, and can be discharged through the slag discharge port 106 constructed at the bottom of the first sedimentation chamber 102; the mud / slag precipitated / separated in the second sedimentation part 200 will also accumulate at the bottom of the second sedimentation chamber 202 due to the effect of gravity. In one embodiment, the slag discharge port 106 can be respectively provided at the bottom of the first sedimentation chamber 102 (i.e., the bottom plate of the first container 101) and the bottom of the second sedimentation chamber 202 (i.e., the bottom plate 210 of the second container 201) so as to discharge the settled mud / slag respectively, but the structure is relatively complicated; and two sets of mud discharge equipment are required; in another preferred embodiment, as Figure 1 and Figure 2 As shown, the coagulation sedimentation tank also includes a guide tube 400, which is arranged in the first sedimentation chamber 102, and the upper end of the guide tube 400 is connected to the bottom of the second sedimentation chamber 202. For example, as shown in the figure, the upper end of the guide tube 400 is fixedly connected to the bottom plate 210 of the second container 201.

[0057] The lower end of the guide tube 400 passes through the first separation device 104 and corresponds to the bottom of the first precipitation chamber 102; in a preferred embodiment, the guide tube 400 can preferably adopt a cylindrical structure, and the guide tube 400 can be installed vertically, such as Figure 1As shown, it is beneficial for the mud / slag settled in the second sedimentation section 200 to fall quickly, to achieve efficient sedimentation, and to prevent the guide tube 400 from being blocked; and by constructing the guide tube 400, and making the upper end of the guide tube 400 communicate with the bottom of the second sedimentation chamber 202, the lower end of the guide tube 400 extends to a position close to the bottom of the first sedimentation chamber 102 after passing through the first separation device 104, and corresponds to the bottom of the first sedimentation chamber 102, so that the mud / slag accumulated at the bottom of the second sedimentation chamber 202 can be directly settled to the bottom of the first sedimentation chamber 102 under its own gravity and the guiding effect of the guide tube 400, which not only makes the mud / slag precipitated / separated from the second sedimentation section 200 can be discharged together with the mud / slag precipitated / separated from the first sedimentation section 100, but also helps to simplify the structure, reduce costs, and reduce floor space, and is particularly beneficial to the efficient discharge of the mud / slag precipitated / separated in the second sedimentation section 200.

[0058] In order to automatically gather mud / slag in the first sedimentation part 100, in a preferred embodiment, the bottom of the first sedimentation chamber 102 is configured as a conical structure, that is, the bottom plate of the first container 101 can be a conical structure, such as Figure 1 As shown, a mud collecting groove 105 is also constructed at the center of the bottom of the first sedimentation chamber 102, that is, the bottom plate of the first container 101 is constructed with a mud collecting groove 105. At this time, the slag discharge port 106 can be constructed on the side wall of the mud collecting groove 105 and connected to the mud discharge pipe 107, as shown in FIG. Figure 1 As shown, the lower end of the guide tube 400 corresponds exactly to the mud collecting trough 105, so that the mud / slag settled at the bottom of the first sedimentation chamber 102 can automatically converge into the mud collecting trough 105 at the center position under the action of its own gravity; at the same time, the mud / slag settled from the guide tube 400 can also automatically converge into the mud collecting trough 105 under the action of its own gravity, and finally be discharged through the slag discharge port 106.

[0059] Similarly, in order to allow the mud / slag settled in the second sedimentation part 200 to automatically converge into the guide tube 400, in a further solution, the bottom of the second sedimentation chamber 202 (i.e., the bottom plate 210 of the second container 201) can also be constructed as a conical structure, such as Figure 1 As shown, the mud / slag settled at the bottom of the second sedimentation chamber 202 can automatically gather to the guide tube 400 under the action of its own gravity, so as to continue to settle downward through the guide tube 400.

[0060] In order to accelerate sedimentation and prevent blockage in the first sedimentation chamber 102, in a more perfect solution, the coagulation sedimentation tank also includes a sludge scraping device, which includes a power source 600, a transmission shaft 601 connected to the power source 600, and a first sludge scraping mechanism 602 adapted to the bottom of the first sedimentation chamber 102, wherein:

[0061] like Figure 1 As shown, the transmission shaft 601 vertically passes through the guide tube 400, the first scraping mechanism 602 is installed on the transmission shaft 601 and is located in the first sedimentation chamber 102, and the power source 600 is used to drive the first scraping mechanism 602 to rotate; the first scraping mechanism 602 can adopt an existing scraping mechanism, for example, Figure 1 As shown, the first scraping mechanism 602 includes a scraper frame and a scraper installed on the scraper frame, the scraper frame is installed on the transmission shaft 601, and there is a set distance between the scraper and the bottom of the first sedimentation chamber 102 (i.e., the bottom plate of the first container 101) so as to cooperate with the bottom of the first sedimentation chamber 102. During actual operation, driven by the power source 600, the first scraping mechanism 602 can rotate at the bottom of the first sedimentation chamber 102, which can not only accelerate the sedimentation of mud / slag through rotation, facilitate efficient output of mud / slag, but also prevent blockage.

[0062] Similarly, in order to accelerate sedimentation and prevent blockage in the second sedimentation chamber 202, in a further embodiment, the scraping device further includes a second scraping mechanism 603, such as Figure 1 As shown, the second scraping mechanism 603 is disposed in the second sedimentation chamber 202 and fixedly mounted on the transmission shaft 601. The second scraping mechanism 603 is adapted to the bottom of the second sedimentation chamber 202 (i.e., the bottom plate 210 of the second container 201). The second scraping mechanism 603 may also adopt an existing scraping mechanism, for example, Figure 1 As shown, the second scraping mechanism 603 includes a scraper frame and a scraper installed on the scraper frame, the scraper frame is installed on the drive shaft 601, and there is a set distance between the scraper and the bottom of the second sedimentation chamber 202, so as to cooperate with the bottom of the second sedimentation chamber 202. During actual operation, the second scraping mechanism 603 can cooperate with the bottom of the second sedimentation chamber 202, so as to accelerate the mud / slag into the guide tube 400 through rotation, which can not only efficiently transport the mud / slag downward, but also prevent blockage. In addition, during actual operation, the power source 600 can simultaneously drive the first scraping mechanism 602 and the second scraping mechanism 603 to rotate synchronously, so as to scrape mud / slag in the first sedimentation chamber 102 and the second sedimentation chamber 202 at the same time, which is not only simple and compact in structure, but also conducive to reducing costs.

[0063] In this embodiment, the power source 600 may preferably be a motor or a reducer, and the power source 600 may be installed above the second sedimentation part 200. For example, Figure 1 and Figure 3 As shown, the power source 600 is installed on the top of the box 204, and the transmission shaft 601 extends into the guide tube 400 in the vertical direction after the horizontal pipe assembly, and extends from the lower end of the guide tube 400 into the first sedimentation chamber 102, as shown in FIG. Figure 4 shown.

[0064] Example 2

[0065] The mud / slag that settles rapidly from the guide tube 400 is fast, and it is easy to impact the mud / slag accumulated at the bottom of the first sedimentation chamber 102, causing the mud / slag at the bottom to be turbulent, mixed, and other problems, thus affecting the smooth discharge of the mud / slag. To solve this problem, the main difference between this embodiment 2 and the above-mentioned embodiment 1 is that in the coagulation sedimentation tank provided in this embodiment, the lower end of the guide tube 400 is constructed as a trumpet shape 401, such as Figure 1 As shown, by constructing the lower end of the guide tube 400 into a trumpet shape 401, the mud / slag settled in the guide tube 400 can be diverted and slowed down, thereby effectively preventing the mud / slag from settling quickly from the guide tube 400 and directly impacting the mud / slag accumulated at the bottom of the first sedimentation chamber 102.

[0066] Example 3

[0067] In order to solve the problem of disinfecting the effluent, the main difference between this embodiment 3 and the above-mentioned embodiment 2 is that the coagulation sedimentation tank provided in this embodiment also includes a disinfection device 501, one end of the horizontal pipe assembly is connected to the disinfection device 501, and the disinfection device 501 is connected to the clean water outlet 108. Figure 1 As shown, the water flowing out of the horizontal pipe assembly can flow into the disinfection device 501, and after being disinfected by the disinfection device 501, it is discharged through the clean water outlet 108, so that the disinfection device 501 can be used to sterilize and disinfect the purified water before discharge.

[0068] The disinfection device 501 has multiple implementations. As an example, the disinfection device 501 can preferably use an ultraviolet disinfection device 501 or a chemical disinfection device 501 provided with a dosing port. When the chemical disinfection device 501 is used, sodium hypochlorite can be added through the dosing port to achieve the purpose of water disinfection.

[0069] In a more perfect solution, the coagulation sedimentation tank further includes a disinfection box 500, the disinfection box 500 is configured with a disinfection chamber, the disinfection box 500 can be arranged on one side of the second sedimentation part 200 (or the second container 201), and the disinfection chamber is connected to one end of the horizontal pipe assembly, such as Figure 1 and Figure 2 As shown, the disinfection device 501 can be arranged in the disinfection chamber, and the clean water outlet 108 can be constructed in the disinfection box 500 or directly constructed in the disinfection device 501, such as Figure 2 As shown, it is beneficial to make the structure of the entire coagulation sedimentation tank more compact.

[0070] The number of disinfection devices 501 can be one or more. Figure 2 As shown, in order to meet the needs of different sewage treatment volumes.

[0071] like Figure 4 As shown, the working process of the coagulation sedimentation tank is as follows: the conditioned sewage enters the first sedimentation chamber 102 through the sewage inlet 103, and most of the flocs are collected at the bottom of the first sedimentation chamber 102 through the inclined tube filler and / or the inclined plate filler, and are concentrated by the first sludge scraping mechanism 602 driven by the power source 600 to run slowly, and are discharged from the first sedimentation part 100 through the slag discharge port 106; the water body with a small number of loose flocs enters the second sedimentation chamber 202 after reasonable water distribution through the diversion channel 300 and the mesh 207, and the loose flocs are collected at the bottom of the second sedimentation chamber 202, are concentrated by the second sludge scraping mechanism 603, and are collected at the bottom of the first sedimentation chamber 102 through the diversion tube 400, and are discharged from the slag discharge port 106, and the clean water flows into the disinfection chamber through one end of the horizontal pipe assembly, and then flows through the disinfection device 501 for disinfection treatment, and finally meets the discharge standards.

[0072] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coagulation sedimentation tank, characterized in that: The invention comprises a first sedimentation part, wherein the first sedimentation part comprises a first sedimentation chamber, a sewage inlet connected to the first sedimentation chamber, and a slag discharge port connected to the first sedimentation chamber, wherein a first separation device is arranged in the first sedimentation chamber, and the first separation device comprises an inclined tube filler and / or an inclined plate filler; a second sedimentation part, the second sedimentation part comprising a second sedimentation chamber, the second sedimentation chamber being arranged above the first separation device, a second separation device being arranged in the second sedimentation chamber, the second separation device comprising a horizontally arranged horizontal pipe assembly, one end of the horizontal pipe assembly being connected to the first sedimentation chamber, and the other end being connected to the clean water outlet; and The guide tube is arranged in the first sedimentation chamber, the upper end of the guide tube is connected with the bottom of the second sedimentation chamber, and the lower end of the guide tube passes through the first separation device and corresponds to the bottom of the first sedimentation chamber.

2. The coagulation sedimentation tank according to claim 1, characterized in that: The guide tube is installed vertically; And / or, the guide tube is a cylindrical structure; And / or, the lower end of the guide tube is configured to be trumpet-shaped; And / or, the slag discharge port is configured at the bottom of the first precipitation chamber.

3. The coagulation sedimentation tank according to claim 1, characterized in that: The bottom of the first sedimentation chamber is a conical structure, and a mud collecting groove is also constructed at the center of the bottom of the first sedimentation chamber, the slag discharge port is constructed on the side wall of the mud collecting groove, and the lower end of the guide tube corresponds to the mud collecting groove; And / or, the bottom of the second precipitation chamber is configured as a conical structure.

4. The coagulation sedimentation tank according to any one of claims 1 to 3, characterized in that: It also includes a guide channel, through which the first sedimentation chamber is connected to one end of the horizontal pipe assembly; And / or, it also includes a disinfection device, one end of the horizontal pipe assembly is connected to the disinfection device, and the disinfection device is connected to the clean water outlet.

5. The coagulation sedimentation tank according to claim 4, characterized in that: It also includes a scraping device, which includes a power source, a transmission shaft connected to the power source, and a first scraping mechanism adapted to the bottom of the first sedimentation chamber, wherein: The transmission shaft vertically passes through the guide tube, the first scraper mechanism is installed on the transmission shaft and is located in the first sedimentation chamber, and the power source is used to drive the first scraper mechanism to rotate.

6. The coagulation sedimentation tank according to claim 5, characterized in that: The scraping device further comprises a second scraping mechanism, which is arranged in the second sedimentation chamber and fixedly mounted on the transmission shaft, and the second scraping mechanism is adapted to the bottom of the second sedimentation chamber.

7. The coagulation sedimentation tank according to claim 6, characterized in that: The first sludge scraping mechanism comprises a scraper frame and a scraper installed on the scraper frame, the scraper frame is installed on the transmission shaft, and there is a set distance between the scraper and the bottom of the first sedimentation chamber; And / or, the second sludge scraping mechanism comprises a scraper frame and a scraper plate mounted on the scraper frame, the scraper frame is mounted on the transmission shaft, and there is a set distance between the scraper plate and the bottom of the second sedimentation chamber; And / or, the power source is a motor or a reducer; And / or, the power source is installed above the second sedimentation part.

8. The coagulation sedimentation tank according to claim 4, characterized in that: The first sedimentation part further includes a first container, the first sedimentation chamber is constructed in the first container, and the sewage inlet is constructed on the side wall of the first container; The second sedimentation part further includes a second container, the second container is arranged in the first container, the second container includes at least two side walls corresponding to each other and a bottom plate constructed below the side walls, the horizontal pipe assembly is arranged in the second container, and the two ends of the horizontal pipe assembly are respectively connected to the two side walls, and the two side walls are respectively constructed with mesh holes and communication holes; One end of the diversion channel is connected to the side wall with mesh structure; The upper end of the guide tube is connected to the bottom plate.

9. The coagulation sedimentation tank according to claim 8, characterized in that: The first container adopts a cylindrical structure; And / or, the second container includes four side walls, a top plate and a bottom plate, the side walls, the top plate and the bottom plate together form the second sedimentation chamber, and the four side walls and the top plate together form a rectangular structure, and the bottom plate is a conical structure; or, the second container includes a box body and a receiving body, wherein the box body only includes side walls and a top plate, the box body is fixedly connected to the first container, and the horizontal pipe assembly is installed in the box body; the receiving body is arranged below the box body, the receiving body includes a cylindrical side wall, a bottom plate connected to the side wall and closing the lower end, and a top plate connected to the side wall, the box body is connected to the top plate, and the box body, the top plate, the side wall and the bottom plate together form the second sedimentation chamber; And / or, it also includes a disinfection box, which is configured with a disinfection chamber, the disinfection box is arranged on one side of the second sedimentation part, and the disinfection chamber is connected to one end of the horizontal pipe assembly, the disinfection device is arranged in the disinfection chamber, and the clean water outlet is configured in the disinfection box or the disinfection device.

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