Integrated denitrification filter tank

Abstract

The utility model relates to the technical field of sewage treatment, in particular to an integrated denitrification filter tank which comprises a denitrification filter tank, a stirring tank is fixedly mounted at one end of the denitrification filter tank, a clean water tank is fixedly connected to one end, far away from the stirring tank, of the denitrification filter tank, and a reverse drainage weir is fixedly mounted at one end, far away from the denitrification filter tank, of the clean water tank. According to the utility model, in order to reduce total nitrogen in effluent and remove nitrate nitrogen and nitrite nitrogen, the backwashing air inlet pipe is used for providing gas power for the effluent, so that the nitration reaction is promoted; and when the filtering effect is reduced due to sewage impurities in the denitrification filter tank, the inside of the denitrification filter tank is cleaned through the backwashing water inlet pipe, so that the blockage of a filtering medium is prevented, the service life of the denitrification filter tank is prolonged, and the filtering effect of the denitrification filter tank is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an integrated denitrification filter tank. Background Art

[0002] In order to obtain cleaner water, people began to explore various filtration methods. With the advancement of science and technology, the design and function of filter tanks have continued to develop and improve. It can effectively remove suspended matter, organic matter, microorganisms and other impurities in the water and improve the quality of water. In different application scenarios, filter tanks also have different types and characteristics to meet various water treatment requirements.

[0003] According to a disclosed integrated denitrification filter (publication number: CN 218893522 U), a denitrification filter structure includes a filter material stirring mechanism, a reciprocating spraying mechanism and a driving mechanism which are sequentially arranged on the denitrification filter body. The filter material stirring mechanism is composed of a stirring shaft rotatably installed in the denitrification filter body and a spiral stirring blade fixed on the stirring shaft.

[0004] Based on the search of the above patents and combined with the equipment in the prior art, it was found that in order to reduce the total nitrogen in the effluent, nitrate nitrogen and nitrite nitrogen need to be removed. Denitrification process is one of the commonly used methods. The problems of traditional denitrification filter tanks are that the sewage stirring method in the tank is insufficient, such as aeration at the bottom of the tank will increase dissolved oxygen and inhibit denitrification. The mechanical stirring efficiency is low and the sewage treatment effect is poor. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide an integrated denitrification filter to solve the problem of insufficient stirring.

[0006] Based on the above purpose, the utility model provides an integrated denitrification filter, including: a denitrification filter, a stirring tank is fixedly installed at one end of the denitrification filter, a clean water tank is fixedly connected to the end of the denitrification filter away from the stirring tank, a staircase is fixedly installed at the end of the clean water tank away from the denitrification filter, a staircase platform is fixedly connected to one end of the staircase, and the staircase platform is fixedly connected to one side of the denitrification filter.

[0007] As an optional implementation, a water inlet pipe is fixedly connected to the denitrification filter tank, the water inlet pipe is located at the lower side of the stair platform, and an overflow pipe is fixedly connected to one end of the denitrification filter tank away from the water inlet pipe.

[0008] As an optional embodiment, a water outlet pipe is fixedly installed on one side of the water inlet pipe on the denitrification filter tank, the side of the water outlet pipe away from the water inlet pipe is fixedly connected to a backwash air inlet pipe, and the backwash air inlet pipe is fixedly connected to a backwash water inlet pipe at one end away from the water outlet pipe.

[0009] As an optional implementation, the backwash water inlet pipe is fixedly connected to a backwash drain pipe at one side away from the backwash air inlet pipe, and the denitrification filter tank is fixedly connected to a vent pipe at one end away from the backwash drain pipe.

[0010] As an optional implementation, a drainage weir is fixedly installed at the upper end of the denitrification filter tank, and a reverse drainage weir is fixedly connected to the lower end of the drainage weir.

[0011] As an optional implementation, a plurality of evenly distributed nitrification filter bricks are fixedly installed at the bottom of the denitrification filter tank, and a filter screen is fixedly installed at the upper end of the nitrification filter bricks.

[0012] As an optional implementation, nitrification filter material is added to the sewage inside the denitrification filter tank.

[0013] Beneficial effects of the utility model:

[0014] In order to reduce the total nitrogen in the effluent, the utility model needs to remove nitrate nitrogen and nitrite nitrogen, and provides gas power for them through the backwashing air inlet pipe, thereby promoting the nitrification reaction, thereby maintaining the balance of water quality and the health of organisms, improving the denitrification effect and reducing costs.

[0015] When the impurities in the sewage in the denitrification filter reduce the filtering effect, the inside is cleaned by backwashing the water inlet pipe to prevent the filter medium from being blocked, thereby increasing the service life and filtering effect of the denitrification filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is an overall schematic diagram of a denitrification tank according to an embodiment of the utility model;

[0018] Figure 2 This is a side cross-sectional schematic diagram of a denitrification tank according to an embodiment of the utility model;

[0019] Figure 3 This is a schematic cross-sectional view of a denitrification tank according to an embodiment of the utility model;

[0020] Figure 4 It is a top view schematic diagram of the denitrification tank of the utility model embodiment.

[0021] The markings in the figure are:

[0022] 1. Mixing tank; 2. Denitrification filter tank; 3. Clean water tank; 101. Water inlet pipe; 102. Water outlet pipe; 103. Backwash inlet pipe; 104. Backwash inlet pipe; 105. Backwash drain pipe; 106. Stair platform; 107. Vent pipe; 108. Overflow pipe; 109. Filter screen; 110. Nitrification filter material; 111. Nitrification filter brick; 112. Backwash weir; 113. Drain weir; 114. Stairs. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0024] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] like Figure 1-Figure 4 As shown, an integrated denitrification filter comprises: a denitrification filter 2, a stirring tank 1 is fixedly installed at one end of the denitrification filter 2, a clean water tank 3 is fixedly connected to one end of the denitrification filter 2 away from the stirring tank 1, a reverse drainage weir 112 is fixedly installed at one end of the clean water tank 3 away from the denitrification filter 2, a staircase platform 106 is fixedly connected to one end of the reverse drainage weir 112, and the staircase platform 106 is fixedly connected to one side of the denitrification filter 2.

[0026] In this way, the sewage is filtered for the first time through the stirring tank 1 and flows into the denitrification filter tank 2. The filtering effect can be observed at any time through the stair platform 106, and corresponding measures can be taken in time for poor filtering.

[0027] As an optional implementation, Figure 4 As shown, a water inlet pipe 101 is fixedly connected to the denitrification filter 2 , and the water inlet pipe 101 is located at the lower side of the stair platform 106 . An overflow pipe 108 is fixedly connected to one end of the denitrification filter 2 away from the water inlet pipe 101 .

[0028] In this way, sewage flows in through the water inlet pipe 101. When the sewage flows in excessively, the excess sewage is discharged through the overflow pipe 108 to avoid pressure imbalance caused by excessive water flow, thereby damaging the machine and causing economic losses.

[0029] As an optional implementation, Figure 4 As shown, a water outlet pipe 102 is fixedly installed on one side of the water inlet pipe 101 of the denitrification filter 2, a backwash air inlet pipe 103 is fixedly connected to the side of the water outlet pipe 102 away from the water inlet pipe 101, and a backwash water inlet pipe 104 is fixedly connected to the end of the backwash air inlet pipe 103 away from the water outlet pipe 102.

[0030] In this way, when the impurities in the sewage in the denitrification filter 2 cause the filtering effect to be reduced, the inside is cleaned through the backwashing water inlet pipe 104. In order to achieve a better cleaning effect, the backwashing air inlet pipe 103 is used to provide gas power to remove the impurities, thereby preventing the filter medium from being blocked, thereby improving the service life and filtering effect of the denitrification filter 2.

[0031] As an optional implementation, Figure 4 As shown, a backwash water inlet pipe 104 is fixedly connected to a backwash drain pipe 105 at one side away from the backwash air inlet pipe 103 , and a vent pipe 107 is fixedly connected to one end of the denitrification filter tank 2 away from the backwash drain pipe 105 .

[0032] In this way, impurities cleaned from the inside of the equipment are discharged through the backwash drain pipe 105, and the internal medium of the denitrification filter 2 is discharged through the vent pipe 107 when the denitrification filter 2 is under maintenance. When the equipment is running, air is discharged through the vent pipe 107 to ensure normal pressure.

[0033] As an optional implementation, Figure 3 As shown, a drainage weir 113 is fixedly installed at the upper end of the denitrification filter tank 2, and a reverse drainage weir 112 is fixedly connected to the lower end of the drainage weir 113.

[0034] In this way, the back-drainage weir 112 is used to prevent the treated sewage from flowing back into the treatment system, and the stable water discharge helps to maintain the stability of the water discharge, improve the treatment efficiency, and ensure the effect of sewage treatment. It plays a buffering role to a certain extent. When the sewage passes through the drainage weir 113, a certain water level is maintained so that the treated sewage can be discharged stably, allowing the sewage to pass through the water discharge weir evenly to ensure the uniformity of the water discharge. At the same time, the water discharge volume can be calculated by the height and width of the water discharge weir, which also plays a blocking role to prevent sewage overflow.

[0035] As an optional implementation, Figure 3 As shown, a plurality of evenly distributed nitrification filter bricks 111 are fixedly installed at the bottom of the denitrification filter tank 2 , and a filter screen 109 is fixedly installed at the upper end of the nitrification filter bricks 111 .

[0036] In this way, when the sewage passes through the nitrification filter brick 111, it provides stable support for the filter medium, allowing the water flow to pass through the filter medium evenly, improving the filtering effect, helping to intercept impurities and pollutants in the water, making the installation and maintenance of the filtration system more convenient, and further filtering the suspended matter in the water when entering the filter net 109.

[0037] As an optional implementation, Figure 2 , Figure 3 As shown, nitrification filter material 110 is added to the sewage inside the denitrification filter tank 2.

[0038] In this way, adding nitrification filter material 110 to sewage promotes the nitrification reaction, and converts ammonia nitrogen (NH3-N) into nitrate (NO3-N) through the nitrification reaction, thereby maintaining the balance of water quality and the health of organisms.

[0039] In this embodiment, sewage is filtered for the first time through the stirring tank 1 and flows into the denitrification filter 2. The filtering effect is observed at any time through the stair platform 106. Sewage flows in through the water inlet pipe 101. When the sewage flows in excessively, the excess sewage is discharged through the overflow pipe 108 to avoid pressure imbalance caused by excessive water flow, thereby damaging the machine and causing economic losses. When the filtration effect is reduced by sewage impurities in the denitrification filter 2, the inside is cleaned through the backwashing water inlet pipe 104. In order to achieve a better cleaning effect, gas power is provided to it through the backwashing air inlet pipe 103 to make the impurities fall off and be removed, thereby preventing the filter medium from being blocked, thereby improving the service life and filtering effect of the denitrification filter 2. The impurities cleaned on the inside of the equipment are discharged through the backwashing drain pipe 105. When the denitrification filter 2 is repaired, the internal medium of the denitrification filter 2 is discharged through the vent pipe 107. When the equipment is running, air is discharged through the vent pipe 107 to ensure normal pressure. The backwashing weir 112 is used to avoid processing The sewage flows back into the treatment system to stabilize the effluent, which helps to maintain the stability of the effluent, improve the treatment efficiency and ensure the effect of sewage treatment. It plays a buffering role to a certain extent. When the sewage passes through the drainage weir 113, a certain water level is maintained so that the treated sewage can be discharged stably, and the sewage can pass through the effluent weir evenly to ensure the uniformity of the effluent. At the same time, the effluent volume can be calculated by the height and width of the effluent weir, which also plays a blocking role to prevent sewage overflow. When the sewage passes through the nitrification filter brick 111, it provides stable support for the filter medium, so that the water flow passes through the filter medium evenly, improves the filtering effect, helps to intercept impurities and pollutants in the water, and makes the installation and maintenance of the filtration system more convenient. At the same time, when entering the filter net 109, the suspended matter in the water is further filtered, and nitrification filter material 110 is added to the sewage to promote the nitrification reaction. Through the nitrification reaction, ammonia nitrogen (NH3-N) is converted into nitrate (NO3-N), thereby maintaining the balance of water quality and the health of organisms.

[0040] A person skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An integrated denitrification filter, comprising: The denitrification filter (2) is characterized in that a stirring tank (1) is fixedly installed at one end of the denitrification filter (2), a clean water tank (3) is fixedly connected to one end of the denitrification filter (2) away from the stirring tank (1), a staircase (114) is fixedly installed at one end of the clean water tank (3) away from the denitrification filter (2), one end of the staircase (114) is fixedly connected to a staircase platform (106), and the staircase platform (106) is fixedly connected to one side of the denitrification filter (2).

2. The integrated denitrification filter according to claim 1, characterized in that: A water inlet pipe (101) is fixedly connected to the denitrification filter (2), and the water inlet pipe (101) is located at the lower side of the staircase platform (106). An overflow pipe (108) is fixedly connected to one end of the denitrification filter (2) away from the water inlet pipe (101).

3. The integrated denitrification filter according to claim 2, characterized in that: A water outlet pipe (102) is fixedly mounted on one side of the water inlet pipe (101) on the denitrification filter tank (2); a backwash air inlet pipe (103) is fixedly connected to the side of the water outlet pipe (102) away from the water inlet pipe (101); and a backwash water inlet pipe (104) is fixedly connected to the end of the backwash air inlet pipe (103) away from the water outlet pipe (102).

4. The integrated denitrification filter according to claim 3, characterized in that: A backwashing drainage pipe (105) is fixedly connected to the backwashing water inlet pipe (104) at one end away from the backwashing air inlet pipe (103), and a vent pipe (107) is fixedly connected to the denitrification filter tank (2) at one end away from the backwashing drainage pipe (105).

5. The integrated denitrification filter according to claim 4, characterized in that: A drainage weir (113) is fixedly installed at the upper end of the denitrification filter tank (2), and a reverse drainage weir (112) is fixedly connected to the lower end of the drainage weir (113).

6. The integrated denitrification filter according to claim 5, characterized in that: A plurality of evenly distributed nitrification filter bricks (111) are fixedly installed at the bottom of the denitrification filter tank (2), and a filter screen (109) is fixedly installed at the top of the nitrification filter bricks (111).

7. The integrated denitrification filter according to claim 1, characterized in that: Nitrification filter material (110) is added to the sewage inside the denitrification filter tank (2).

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