A sewage treatment system

Abstract

The present invention discloses a sewage treatment system, including m reaction tanks, m dosing devices, m delivery pipelines and m concentration detectors and m-1 first adjustment modules, one delivery pipeline is connected to the reaction tank at the head, and the m-1 delivery pipelines sequentially connect the m reaction tanks in series; the m dosing devices are respectively arranged in a one-to-one correspondence with the reaction tanks, and the dosing speed of the dosing device from the head to the tail is gradually reduced; the m concentration detectors are respectively arranged in the delivery pipelines; the m-1 first adjustment modules are electrically connected to the rear m-1 dosing devices, and each first adjustment module adjusts the dosing speed of the dosing device according to the difference in pollutant concentration between the previous reaction tank and the tail. From the dosing device at the head to the dosing device at the tail, the dosing speed of the dosing device is gradually reduced, and the reaction reagent added by each dosing device can fully react with the sewage in the reaction tank, fully remove the ammonia nitrogen in the reaction tank, and avoid waste of reaction reagents.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a sewage treatment system. Background Art

[0002] During the production process, a lot of industrial wastewater is often generated. Before being discharged, industrial wastewater needs to be purified. Once the pollutants in the wastewater are removed, it can meet the wastewater discharge standards.

[0003] Among them, the sewage treatment device includes a reaction tank and a dosing device. The sewage in the sewage pool is transported to the reaction tank. The dosing device adds the reactant into the reaction tank and reacts with the sewage in the reaction tank, thereby removing pollutants in the sewage, such as ammonia nitrogen.

[0004] During the sewage treatment process, a dosing device must add a large amount of reagent to the reaction tank to ensure that pollutants are fully removed. This ensures that the pollutants in the reaction tank are quickly removed, allowing the sewage to be discharged or transferred to the next treatment step in a timely manner. However, this method results in significant reagent waste and increases the cost of sewage treatment. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a sewage treatment system to reduce the cost of sewage treatment.

[0006] According to an embodiment of the present invention, the sewage treatment system includes m reaction tanks, m dosing devices, m delivery pipelines, m concentration detectors, and m-1 first adjustment modules, wherein:

[0007] One of the delivery pipes is connected to the inlet of the reaction tank at the head, and m-1 delivery pipes are respectively connected between adjacent reaction tanks, so that m reaction tanks are sequentially arranged in series;

[0008] The m dosing devices are respectively arranged in one-to-one correspondence with the reaction tanks, and are used to add reaction reagents to the reaction tanks. The dosing speed of the dosing devices is gradually reduced from the dosing device at the head to the dosing device at the tail;

[0009] m concentration detectors are respectively arranged in the delivery pipelines for detecting pollutants in the sewage;

[0010] The m-1 first regulating modules are electrically connected to the next m-1 dosing devices respectively, and each first regulating module adjusts the dosing speed of the dosing device according to the difference in pollutant concentration entering and exiting the previous reaction tank.

[0011] The sewage treatment system according to an embodiment of the present invention has at least the following beneficial effects: during the sewage treatment process, such as the treatment of ammonia nitrogen in the sewage, the sewage is transported to the head reaction tank through a conveying pipe, and the sewage is transported from the head reaction tank to each reaction tank in sequence through a conveying pipe until it is transported to the tail reaction tank. In the process of transporting the sewage to each reaction tank, the ammonia nitrogen in the sewage reacts with the reaction reagent added by the dosing device, thereby removing the ammonia nitrogen in the reaction tank. Specifically, the dosing speed of the dosing device is gradually reduced from the head dosing device to the tail dosing device. As a result, the reaction reagent added by each dosing device can fully react with the sewage in the reaction tank, thereby fully removing the ammonia nitrogen in the reaction tank, avoiding waste of reaction reagents and saving costs.

[0012] According to some embodiments of the present invention, the sewage treatment system further includes m stirring devices, and the m stirring devices are respectively connected to the reaction tanks for stirring the sewage in the reaction tanks.

[0013] According to some embodiments of the present invention, the sewage treatment system also includes m-1 second adjustment modules, which are electrically connected to the last m-1 stirring devices respectively, and each second adjustment module adjusts the stirring speed of the stirring device according to the difference in pollutant concentration entering and exiting the previous reaction tank.

[0014] According to some embodiments of the present invention, the sewage treatment system further includes a filtering device, which includes a filter tank and a filter screen. A slag discharge port is provided on the side wall of the filter tank, and the filter screen is obliquely arranged inside the filter tank, with the lower end of the filter screen being connected to the slag discharge port.

[0015] According to some embodiments of the present invention, the filter screen is movably disposed in the filter tank along an up-and-down direction; the sewage treatment system further comprises an elastic structure, and the elastic structure is used to enable the filter screen to be elastically reset.

[0016] According to some embodiments of the present invention, the filtering device further includes a driving device, and the driving device is used to drive the filter to move up and down.

[0017] According to some embodiments of the present invention, the driving device includes a driving member, a first transmission assembly, and a plurality of pushing assemblies, wherein:

[0018] The first transmission assembly includes a transmission rod and a plurality of first bevel gears, wherein the transmission rod is vertically arranged on the outer wall of the filter tank and is rotatably connected to the filter tank, and the plurality of first bevel gears are sequentially arranged on the transmission rod from bottom to top;

[0019] The pushing components are arranged on the outer wall of the filter tank in sequence from bottom to top, and are used to be connected to the first bevel gear respectively; wherein, the pushing components include a base, a rotating shaft, a second bevel gear and a cam, the base is arranged on the outer wall of the filter tank, the rotating shaft is rotatably connected to the base, the second bevel gear is fixedly connected to the rotating shaft, the first bevel gear is meshed with the second bevel gear, and the cam is connected to the rotating shaft to push the filter screen to move upward.

[0020] According to some embodiments of the present invention, the outer wall of the reaction tank is provided with a plurality of slag discharge ports sequentially from bottom to top, and the outer wall of the reaction tank is provided with a plurality of collection troughs from bottom to top, and each of the slag discharge ports is respectively connected to the collection trough;

[0021] The sewage treatment system includes a plurality of filter screens and a plurality of slag discharge pipes. The lower end of each filter screen is respectively connected to the slag discharge port. The slag discharge pipe is used to connect the plurality of collection tanks in series.

[0022] According to some embodiments of the present invention, the sewage treatment system further includes a flushing device, which is connected to each of the collection tanks, respectively, and is used to flush garbage in each of the collection tanks.

[0023] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0025] Figure 1 A schematic diagram of a portion of the structure of a sewage treatment system according to an embodiment of the present invention;

[0026] Figure 2 Schematic diagram of the structure of the filtering device according to an embodiment of the present invention;

[0027] Figure 3 for Figure 2 Enlarged schematic diagram of the middle A area.

[0028] Reference numerals:

[0029] 100. Reaction tank; 110. Dosing device; 200. Delivery pipeline; 300. Concentration detector; 400. Stirring device; 500. Filter device; 510. Filter tank; 511. Collecting tank; 512. Slag discharge pipeline; 513. Slag discharge port; 514. Avoidance port; 515. Guide rod; 520. Filter screen; 530. Drive member; 540. First transmission assembly; 541. Transmission rod; 542. First bevel gear; 550. Pushing assembly; 551. Base; 552. Rotating shaft; 553. Second bevel gear; 554. Cam; 560. Elastic structure; 561. Spring. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0032] In the description of the present invention, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0035] According to the present invention, a sewage treatment system is disclosed, referring to Figure 1 , including m reaction tanks 100, m dosing devices 110, m conveying pipes 200, m concentration detectors 300 and m-1 first adjustment modules, wherein: one conveying pipe 200 is connected to the inlet of the first reaction tank 100, and m-1 conveying pipes 200 are respectively connected between adjacent reaction tanks 100, so as to arrange the m reaction tanks 100 in series in sequence; the m dosing devices 110 are respectively arranged in a one-to-one correspondence with the reaction tanks 100, for adding reactants to the reaction tanks 100, and the dosing speed of the dosing devices 110 is gradually reduced from the head dosing device 110 to the tail dosing device 110; the m concentration detectors 300 are respectively arranged in the conveying pipes 200, for detecting pollutants in the sewage; the m-1 first adjustment modules are respectively electrically connected to the last m-1 dosing devices 110, and each first adjustment module adjusts the feeding speed of the dosing device 110 according to the difference in pollutant concentration entering and exiting the previous reaction tank 100.

[0036] Specifically, during the sewage treatment process, such as the treatment of ammonia nitrogen in the sewage, the sewage is transported to the head reaction tank 100 through the delivery pipe 200. From the head reaction tank 100, the sewage is sequentially transported to each reaction tank 100 through the delivery pipe 200 until it is transported to the tail reaction tank 100. During the process of transporting the sewage to each reaction tank 100, the ammonia nitrogen in the sewage reacts with the reaction reagent added by the dosing device 110, thereby removing the ammonia nitrogen in the reaction tank 100. Specifically, the dosing speed of the dosing device 110 is gradually reduced from the head dosing device 110 to the tail dosing device 110. As a result, the reaction reagent added by each dosing device 110 can fully react with the sewage in the reaction tank 100, thereby fully removing the ammonia nitrogen in the reaction tank 100, avoiding waste of reaction reagents and saving costs.

[0037] Furthermore, through the arrangement of the first regulating module and the concentration detector 300, each first regulating module adjusts the feeding speed of the dosing device 110 according to the difference in concentration of pollutants entering and exiting the previous reaction tank 100. When the sewage is transported to the first reaction tank 100, the pollutants in the sewage are not treated well in the first reaction tank 100, that is, the difference in concentration of pollutants entering and exiting the first reaction tank 100 is small. The first regulating module adjusts the dosing device 110 corresponding to the next reaction tank 100, so that the pollutants in the sewage can be better treated when the sewage is transported to the next reaction tank 100. Similarly, when the sewage passes through each subsequent reaction tank 100, the first regulating module ensures that the pollutants in the sewage are better treated. Of course, when the concentration difference is large, the first regulating module adjusts and reduces the feeding speed of the dosing device 110 corresponding to the next reaction tank 100, thereby reducing the waste of reaction reagents.

[0038] In some embodiments, the dosing device 110 includes a reagent tank, a connecting pipe, and a pump. The connecting pipe connects the reaction tank 100 and the reagent tank, and the pump is disposed in the connecting pipe. When the dosing efficiency of the dosing device 110 needs to be adjusted, the first adjustment module adjusts the operating efficiency of the pump, thereby adjusting the dosing efficiency of the dosing device 110 into the reaction tank 100.

[0039] In some embodiments, the concentration detector 300 is an ammonia nitrogen meter or other concentration detectors.

[0040] In some embodiments, the sewage treatment system further includes m stirring devices 400, each of which is connected to the reaction tank 100 and is used to stir the sewage in the reaction tank 100. Through the arrangement of the stirring device 400, the stirring device 400 stirs the reaction reagent and sewage in the reaction tank 100, thereby ensuring sufficient contact between the reaction reagent and the sewage, thereby allowing the reaction reagent to fully react with the ammonia nitrogen in the sewage, and fully removing the ammonia nitrogen in the sewage.

[0041] Furthermore, the sewage treatment system also includes m-1 second regulating modules, each of which is electrically connected to the last m-1 stirring devices 400. Each second regulating module adjusts the stirring speed of the stirring device 400 based on the difference in pollutant concentration entering and exiting the previous reaction tank 100. Through the configuration of the second regulating modules, the second regulating module adjusts the stirring device 400 corresponding to the next reaction tank 100 based on the concentration difference of the previous reaction tank 100. Thus, as the dosing device 110 adds reactants to the reaction tank 100, the stirring speed of the corresponding stirring device 400 is also accelerated, thereby ensuring that the reactants fully contact and react with the sewage in the reaction tank 100.

[0042] In some embodiments, reference Figure 2 and Figure 3 The sewage treatment system further includes a filtering device 500, which includes a filter tank 510 and a filter screen 520. A slag discharge port 513 is provided on the side wall of the filter tank 510. The filter screen 520 is tiltedly disposed inside the filter tank 510, with the lower end of the filter screen 520 in contact with the slag discharge port 513. The filter tank 510 is connected to the head reaction tank 100 via the conveying pipe 200. It should be noted that before the sewage is conveyed from the sewage pool to the head reaction tank 100, the filter screen 520 filters out the waste residue in the sewage. The filtered waste residue slides obliquely along the filter screen 520 to the slag discharge port 513 and is discharged through the slag discharge port 513.

[0043] Furthermore, the lower end of the filter screen 520 is rotatably connected to the slag discharge port 513. A relief opening 514 is defined on the other side wall of the filter tank 510, away from the slag discharge port 513. The upper end of the filter screen 520 extends from the relief opening 514. A guide rod 515 is vertically disposed in the relief opening 514. The filter screen 520 is also provided with the guide rod 515. The filter screen 520 is also provided with a relief strip groove, through which the guide rod 515 extends. As the filter screen 520 rotates up and down, the guide rod 515 moves along the relief strip groove. The filter device 500 further includes an elastic structure 560, which includes at least two springs 561. One spring 561 is sleeved on the guide rod 515 and abuts between the lower side of the avoidance opening 514 and the lower side of the filter screen 520. The other spring 561 is sleeved on the guide rod 515 and abuts between the upper side of the avoidance opening 514 and the upper side of the filter screen 520. By adopting the filter screen 520 with the above structure, the filter screen 520 vibrates up and down during the process of filtering waste residue in sewage, thereby ensuring that the waste residue on the filter screen 520 can slide along the filter screen 520 to the residue discharge port 513 during the vibration of the filter screen 520, thereby facilitating the cleaning of the waste residue.

[0044] In some embodiments, the filter device 500 further includes a driving device for driving the filter screen 520 to move up and down. Through the setting of the driving device, the driving device can drive the filter screen 520 to shake quickly, so that the waste residue in the filter screen 520 is quickly shaken off.

[0045] Furthermore, the driving device includes a driving member 530, a first transmission assembly 540 and a plurality of pushing assemblies 550, wherein: the first transmission assembly 540 includes a transmission rod 541 and a plurality of first bevel gears 542, the transmission rod 541 is vertically arranged on the outer wall of the filter tank 510 and is rotatably connected to the filter tank 510, and the plurality of first bevel gears 542 are sequentially arranged on the transmission rod 541 from bottom to top; the pushing assemblies 550 are sequentially arranged on the outer wall of the filter tank 510 from bottom to top, for respectively engaging with the first bevel gears 542. shaped gear 542; wherein, the pushing assembly 550 includes a base 551, a rotating shaft 552, a second bevel gear 553 and a cam 554, the base 551 is arranged on the outer wall of the filter tank 510, the rotating shaft 552 is rotatably connected to the base 551, the second bevel gear 553 is fixedly connected to the rotating shaft 552, the first bevel gear 542 is meshed with the second bevel gear 553, the cam 554 is connected to the rotating shaft 552, and is abutted against the lower side surface of the high end portion of the filter screen 520.

[0046] Specifically, the driving member 530 drives the transmission rod 541 to rotate, which in turn drives the multiple first bevel gears 542 to rotate synchronously. Furthermore, because the first bevel gears 542 are meshed with the second bevel gears 553, the first bevel gears 542, through the second bevel gears 553, drive the rotating shaft 552 to rotate. The rotating shaft 552 then drives the cam 554 to rotate synchronously. During the rotation of the cam 554, the cam 554 pushes the filter screen 520 to vibrate up and down. As can be seen from the above, using the above-described driving device, the driving device simultaneously drives the multiple filter screens 520 to vibrate up and down, allowing waste residue on each filter screen 520 to slide down along the filter screen 520.

[0047] In some embodiments, the outer wall of the reaction tank 100 is provided with multiple slag discharge ports 513 from bottom to top, and the outer wall of the reaction tank 100 is provided with multiple collection troughs 511 from bottom to top, with each slag discharge port 513 being connected to each collection trough 511. The sewage treatment system includes multiple filter screens 520, multiple slag discharge pipes 512, and a flushing device. The multiple filter screens 520 are sequentially arranged on the inner side of the reaction tank 100 from bottom to top, with the lower end of each filter screen 520 corresponding to the slag discharge port 513. The slag discharge pipes 512 are used to connect the multiple collection troughs 511 in series. The flushing device is connected to each collection trough 511 and is used to flush the waste residue in each collection trough 511. Specifically, the waste residue that slides off each filter screen 520 is discharged into the collection trough 511 through the corresponding slag discharge port 513. The flushing device discharges flushing water into each collection trough 511, which causes the waste residue in the collection trough 511 to be discharged through the slag discharge pipes 512, thereby allowing for the overall recovery of the waste residue.

[0048] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above. Various modifications may be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof may be combined with one another unless there is a conflict.

Claims

1. A sewage treatment system, characterized in that: The system comprises m reaction tanks (100), m dosing devices (110), m delivery pipelines (200), m concentration detectors (300), and m-1 first regulating modules, wherein: One of the delivery pipes (200) is connected to the inlet of the reaction tank (100) at the head, and m-1 of the delivery pipes (200) are respectively connected between adjacent reaction tanks (100), so as to sequentially connect the m reaction tanks (100) in series. The m dosing devices (110) are respectively arranged in one-to-one correspondence with the m reaction tanks (100), and are used to add reaction reagents to the reaction tanks (100), and the dosing speed of the dosing devices (110) is gradually reduced from the dosing device (110) at the head to the dosing device (110) at the tail; m concentration detectors (300) are respectively arranged on m conveying pipes (200) for detecting the concentration of pollutants in the sewage; m-1 of the first regulating modules are electrically connected to the next m-1 of the dosing devices (110), and each of the first regulating modules adjusts the dosing speed of the dosing device (110) according to the difference in pollutant concentration entering and exiting the previous reaction tank (100); when the difference in pollutant concentration entering and exiting the previous reaction tank is large, the first regulating module reduces the dosing speed of the dosing device corresponding to the next reaction tank; The sewage treatment system further comprises m stirring devices (400), wherein the m stirring devices (400) are respectively connected to the m reaction tanks (100) and are used to stir the sewage in the reaction tanks (100); The sewage treatment system further comprises m-1 second regulating modules, the m-1 second regulating modules being electrically connected to the next m-1 stirring devices (400) respectively, and each second regulating module adjusting the stirring speed of the next stirring device (400) according to the difference in concentration of pollutants entering and exiting the previous reaction tank (100); when the dosing device adds a reaction agent to the reaction tank, the stirring speed of the corresponding stirring device is also accelerated; m is 3.

2. A sewage treatment system according to claim 1, characterized in that: The sewage treatment system further comprises a filtering device (500), wherein the filtering device (500) comprises a filter tank (510) and a filter screen (520), wherein a slag discharge port (513) is provided on a side wall of the filter tank (510), and the filter screen (520) is arranged obliquely inside the filter tank (510), and the lower end of the filter screen (520) is in contact with the slag discharge port (513). Before the sewage is transported to the reaction tank at the head, the filter screen filters out waste residue in the sewage.

3. A sewage treatment system according to claim 2, characterized in that: The filter screen (520) is movably arranged in the filter tank (510) in an up-down direction; the sewage treatment system further comprises an elastic structure (560), and the elastic structure (560) is used to enable the filter screen (520) to be elastically reset.

4. A sewage treatment system according to claim 2, characterized in that: The filtering device (500) further comprises a driving device, and the driving device is used to drive the filtering screen (520) to move up and down.

5. A sewage treatment system according to claim 4, characterized in that: The driving device includes a driving member (530), a first transmission assembly (540) and a plurality of pushing assemblies (550), wherein: The first transmission assembly (540) comprises a transmission rod (541) and a plurality of first bevel gears (542); the transmission rod (541) is vertically arranged on the outer wall of the filter tank (510) and is rotatably connected to the filter tank (510); and the plurality of first bevel gears (542) are sequentially arranged on the transmission rod (541) from bottom to top; The pushing assembly (550) is sequentially arranged on the outer wall of the filter tank (510) from bottom to top, and is used to be connected to the first bevel gear (542) respectively; wherein, the pushing assembly (550) includes a base (551), a rotating shaft (552), a second bevel gear (553) and a cam (554); the base (551) is arranged on the outer wall of the filter tank (510); the rotating shaft (552) is rotatably connected to the base (551); the second bevel gear (553) is fixedly connected to the rotating shaft (552); the first bevel gear (542) is meshed with the second bevel gear (553); the cam (554) is connected to the rotating shaft (552) and is used to push the filter screen (520) to move upward.

Images