An internal-circulation shortcut denitrification filter

Abstract

The utility model discloses a kind of inner circulation short-path denitrification filter tank, it is related to sewage treatment technical field.The utility model includes filter tank body, filter tank body includes three-chamber filter tank, the top cover of three-chamber filter tank is provided with cover plate, mounting strip is fixed in three-chamber filter tank inner wall, overflow plate is cooperatively arranged in the mounting groove of mounting strip, three-chamber filter tank is separated by overflow plate and formed sewage chamber, purification chamber and catch basin, circulation pipe is communicatively arranged between catch basin and sewage chamber;Purification chamber is located in the middle position of three-chamber filter tank, and heating plate is fixed in its purification chamber inner wall, and purification chamber is equipped with biological purification assembly.The utility model cooperates by setting biological purification assembly and heating plate, while maintaining suitable microbial reaction temperature, using the large specific surface area structure of biological adsorption membrane group, effectively adsorbing organic matter and nitrogen compound in sewage, and realizing short-path denitrification treatment by microorganism, significantly improve denitrification efficiency and overall processing capacity.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and in particular relates to an internal circulation short-cut denitrification filter. Background Technology

[0002] In wastewater treatment, especially for urban sewage and some industrial wastewater, denitrification is a crucial step. Denitrification filters are a common biological denitrification process. Their principle is to utilize denitrifying bacteria to reduce nitrates to nitrogen gas under anaerobic conditions, thus achieving denitrification. However, traditional denitrification filters have the following shortcomings:

[0003] Traditional filters often rely on a single packing material as a microbial carrier, which has a limited specific surface area, restricting the amount and activity of microorganisms and resulting in low denitrification efficiency. The activity of denitrifying bacteria is greatly affected by ambient temperature, especially at low temperatures, where the denitrification rate decreases significantly, affecting effluent quality. Most traditional filters lack an efficient internal circulation structure, making it difficult to achieve the synergistic effect of short-cut denitrification and deep denitrification.

[0004] To address these issues, we provide an internal circulation short-path denitrification filter. Utility Model Content

[0005] The purpose of this invention is to provide an internal circulation short-path denitrification filter that solves the problem of low nitrogen removal efficiency in existing filters through the synergistic effect of biological purification components and heating plates.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is an internal circulation short-cut denitrification filter, including a filter body, the filter body including a three-chamber filter, the top of the three-chamber filter is covered with a cover plate, the inner wall of the three-chamber filter is fixed with an installation strip, the installation groove of the installation strip is fitted with an overflow plate, the three-chamber filter is divided into a sewage chamber, a purification chamber and a water collection chamber by the overflow plate, and a circulation pipe is provided to connect the water collection chamber and the sewage chamber;

[0008] The purification chamber is located in the middle of the three-chamber filter tank. A heating plate is fixed to the inner wall of the purification chamber, and the purification chamber is equipped with a biological purification component. The biological purification component is embedded in the middle of the cover plate, and an opening for placing a filter screen is opened at one end of the cover plate. The filter screen is located directly above the sewage chamber.

[0009] The present invention is further configured such that an intercepting strip is fixed to the upper part of the sewage chamber, a support frame is fixed between the intercepting strip and the upper side wall of the sewage chamber, the support frame is supported on the lower part of the filter screen, and the lower part of the intercepting strip and the upper part of the adjacent overflow plate form a sewage overflow channel.

[0010] The present invention is further configured such that a drain pipe is connected to the end of the water collection chamber, one end of the circulation pipe is connected to the bottom of the water collection chamber, and the other end is connected to the top of the sewage chamber, and both the drain pipe and the circulation pipe are equipped with control valves and pump bodies.

[0011] The present invention is further configured such that a sealing groove for installing a sealing strip is recessed on the upper mounting surface of the three-chamber filter, and the three-chamber filter is sealed to the cover plate by the sealing strip.

[0012] The present invention is further configured such that the biological purification component includes a base plate fixed to the outer ring of the opening in the middle of the cover plate, a mounting plate installed in the middle position of the base plate by a knob, and a bio-adsorption membrane assembly fixed to the bottom of the mounting plate. The bio-adsorption membrane assembly is a cylindrical adsorption structure composed of multiple single membranes, and a handle is fixed on the upper side of the mounting plate.

[0013] The present invention is further configured such that a controller is fixed to the edge of the substrate, the controller is connected to the heating plate through internal wires, and the controller is equipped with a display screen and a control knob.

[0014] The present invention is further configured such that an inspection door is provided at the other end of the cover plate, and a transparent observation window is provided in the middle of the inspection door, and the inspection door is located directly above the water collection chamber.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model, by setting up a biological purification component and a heating plate to work together, maintains a suitable microbial reaction temperature while utilizing the large specific surface area structure of the bio-adsorption membrane to effectively adsorb organic matter and nitrogen compounds in wastewater. It also achieves short-cut denitrification treatment through microorganisms, which significantly improves the denitrification efficiency and overall treatment capacity. Furthermore, a circulation pipe is set between the water collection chamber and the wastewater chamber, allowing some of the treated water to flow back to the top of the wastewater chamber, forming an internal circulation structure. This not only improves the denitrification capacity of the system but also allows for the re-treatment of incompletely treated wastewater, further ensuring the quality of the effluent.

[0017] 2. This utility model adopts an integrated three-chamber filter tank, which integrates filtration, biological treatment, water collection and circulation functions into the same filter tank body, reducing the floor space and improving the space utilization of the equipment. It is suitable for sewage treatment scenarios with limited space. Moreover, the biological purification components are modularly set, and can be quickly installed and removed by knobs and handles, which makes it convenient for users to replace or clean the bio-adsorption membrane group regularly. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a schematic diagram of the overall structure of an internal circulation short-path denitrification filter.

[0020] Figure 2 This is a schematic diagram of the installation of a biological purification component for an internal circulation short-path denitrification filter.

[0021] Figure 3 This is a schematic diagram of one end of a three-chamber filter of an internal circulation short-path denitrification filter.

[0022] Figure 4 This is a schematic diagram of the other end of a three-chamber filter for an internal circulation short-path denitrification filter.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 100. Filter body; 101. Three-chamber filter; 101a. Sealing groove; 102. Cover plate; 103. Inspection door; 103a. Transparent observation window; 104. Biological purification component; 104a. Base plate; 104b. Mounting plate; 104c. Bio-adsorption membrane module; 104d. Controller; 105. Filter screen; 106. Circulation pipe; 107. Mounting strip; 108. Overflow plate; 109. Interception strip; 110. Support frame; 111. Heating plate; 112. Drainage pipe. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] Example

[0027] Please see Figure 1-4This utility model relates to an internal circulation short-cut denitrification filter, comprising a filter body 100, the filter body 100 including a three-chamber filter 101, the top of the three-chamber filter 101 being covered by a cover plate 102, the inner wall of the three-chamber filter 101 being fixed with an installation strip 107, an overflow plate 108 being fitted into the installation groove of the installation strip 107, the three-chamber filter 101 being divided by the overflow plate 108 into a sewage chamber, a purification chamber and a water collection chamber, the water collection chamber and the sewage chamber being connected by a circulation pipe 106; the purification chamber is located in the middle of the three-chamber filter 101, the inner wall of the purification chamber is fixed with a heating plate 111, and the purification chamber is equipped with a biological purification component 104, the biological purification component 104 being embedded in the middle of the cover plate 102, and one end of the cover plate 102 having an opening for placing a filter screen 105, the filter screen 105 being located directly above the sewage chamber;

[0028] Wastewater first undergoes preliminary filtration through filter screen 105 to remove larger particulate impurities before entering the wastewater chamber. The wastewater then flows from the top of overflow plate 108 into the purification chamber, where the biological purification component 104 adsorbs organic matter and nitrogen compounds, and combined with microbial action, achieves short-cut denitrification. During this process, heating plate 111 changes the internal temperature of the purification chamber to maintain a suitable temperature environment and improve biological reaction efficiency. After purification, the water enters the collection chamber, with part of it being discharged from the system through drain pipe 112 and the other part flowing back to the top of the wastewater chamber through circulation pipe 106, forming an internal circulation structure and improving denitrification efficiency.

[0029] Specifically, the biological purification component 104 includes a substrate 104a fixed to the outer ring of the opening in the middle of the cover plate 102, a mounting plate 104b mounted to the middle of the substrate 104a via a knob, and a bio-adsorption membrane assembly 104c fixed to the bottom of the mounting plate 104b. The bio-adsorption membrane assembly 104c is a cylindrical adsorption structure composed of multiple single membranes. A handle is fixed to the upper side of the mounting plate 104b, and a controller 104d is fixed to the edge of the substrate 104a. The controller 104d is connected to the heating plate 11 via internal wires. The controller 104d is connected to the biological purification component 104 and is equipped with a display screen and a control knob. The base plate 104a is used for the overall installation and fixation of the biological purification component 104, and the mounting plate 104b is used for the installation of the bio-adsorption membrane assembly 104c and is equipped with a knob and a handle to facilitate the quick assembly and disassembly of the bio-adsorption membrane assembly 104c and the mounting plate 104b. The bio-adsorption membrane assembly 104c adopts a cylindrical structure composed of multiple single membranes, which has a large specific surface area and improves the processing efficiency. The controller 104d controls the working status of the heating plate 111 through wires.

[0030] Furthermore, an intercepting strip 109 is fixed to the upper part of the sewage chamber, and a support frame 110 is fixed between the intercepting strip 109 and the upper side wall of the sewage chamber. The support frame 110 is supported on the lower part of the filter screen 105. The lower part of the intercepting strip 109 and the upper part of the adjacent overflow plate 108 form a sewage overflow channel. The intercepting strip 109 is used to prevent sewage entering the sewage chamber from flowing directly into the purification chamber. An inspection door 103 is provided at the other end of the cover plate 102. A transparent observation window 103a is provided in the middle of the inspection door 103. The inspection door 103 is located directly above the water collection chamber. The transparent observation window 103a facilitates observation of the internal condition of the water collection chamber. When further cleaning and maintenance are required, the inspection door 103 can be opened to maintain and clean the inside of the water collection chamber.

[0031] The upper mounting surface of the three-chamber filter 101 is recessed with a sealing groove 101a for installing a sealing strip. The three-chamber filter 101 is sealed to the cover plate 102 by the sealing strip. A drain pipe 112 is connected to the end of the water collection chamber. One end of the circulation pipe 106 is connected to the bottom of the water collection chamber, and the other end is connected to the top of the sewage chamber. Both the drain pipe 112 and the circulation pipe 106 are equipped with control valves and pumps.

[0032] The operation process of this embodiment is as follows: Before starting the equipment, the wastewater to be treated flows in from above the filter screen 105. The filter screen 105 is used to intercept larger particulate impurities, and the wastewater after preliminary filtration enters the wastewater chamber. The interception bar 109 at the top of the wastewater chamber can prevent wastewater that has not been sufficiently settled from flowing directly into the purification chamber. Subsequently, the wastewater enters the purification chamber through the overflow channel formed by the lower part of the interception bar 109 and the upper part of the overflow plate 108. At this time, the controller 104d controls the heating plate 111 to work, so that the purification chamber maintains a suitable temperature environment for microbial reaction. The bio-adsorption membrane group 104c in the biological purification component 104 efficiently adsorbs organic matter and nitrogen compounds in the wastewater, and completes the short-cut denitrification process through microbial action. The treated water flows into the collection chamber, part of which is discharged from the system through the drain pipe 112, and the other part flows back to the top of the wastewater chamber through the circulation pipe 106, forming an internal circulation structure to further improve the denitrification efficiency. During operation, the status of the water collection chamber can be monitored in real time through the transparent observation window 103a on the inspection door 103. If the bio-adsorption membrane module 104c needs to be replaced or cleaned, it can be quickly disassembled by simply turning the knob on the mounting plate 104b and lifting the handle. After maintenance, it can be reinstalled to restore operation. The entire system has a compact structure and is easy to operate, combining efficient denitrification with easy maintenance, making it suitable for a wide range of applications in the field of wastewater treatment.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An internal circulation short-cut denitrification filter, comprising a filter body (100); characterized in that: The filter body (100) includes a three-chamber filter (101). The top of the three-chamber filter (101) is covered with a cover plate (102). An installation strip (107) is fixed on the inner wall of the three-chamber filter (101). An overflow plate (108) is fitted in the installation groove of the installation strip (107). The three-chamber filter (101) is divided into a sewage chamber, a purification chamber and a water collection chamber by the overflow plate (108). A circulation pipe (106) is provided to connect the water collection chamber and the sewage chamber. The purification chamber is located in the middle of the three-chamber filter (101). A heating plate (111) is fixed to the inner wall of the purification chamber, and the purification chamber is equipped with a biological purification component (104). The biological purification component (104) is embedded in the middle of the cover plate (102), and an opening for placing a filter screen (105) is opened at one end of the cover plate (102). The filter screen (105) is located directly above the sewage chamber.

2. The internal circulation short-cut denitrification filter according to claim 1, characterized in that, An intercepting strip (109) is fixed to the upper part of the sewage chamber. A support frame (110) is fixed between the intercepting strip (109) and the upper side wall of the sewage chamber. The support frame (110) is supported on the lower part of the filter screen (105). The lower part of the intercepting strip (109) and the upper part of the adjacent overflow plate (108) form a sewage overflow channel.

3. The internal circulation short-cut denitrification filter according to claim 1, characterized in that, The end of the water collection chamber is connected to a drain pipe (112). One end of the circulation pipe (106) is connected to the bottom of the water collection chamber, and the other end is connected to the top of the sewage chamber. Both the drain pipe (112) and the circulation pipe (106) are equipped with control valves and pumps.

4. The internal circulation short-cut denitrification filter according to claim 1, characterized in that, The upper mounting surface of the three-chamber filter (101) is recessed to provide a sealing groove (101a) for installing a sealing strip. The three-chamber filter (101) is sealed to the cover plate (102) by the sealing strip.

5. The internal circulation short-cut denitrification filter according to claim 1, characterized in that, The biological purification component (104) includes a base plate (104a) fixed to the outer ring of the opening in the middle of the cover plate (102), a mounting plate (104b) installed in the middle of the base plate (104a) by a knob, and a bio-adsorption membrane assembly (104c) fixed to the bottom of the mounting plate (104b). The bio-adsorption membrane assembly (104c) is a cylindrical adsorption structure composed of multiple single membranes. A handle is fixed on the upper side of the mounting plate (104b).

6. The internal circulation short-cut denitrification filter according to claim 5, characterized in that, A controller (104d) is fixed to the edge of the substrate (104a). The controller (104d) is connected to the heating plate (111) via internal wires, and the controller (104d) is equipped with a display screen and a control knob.

7. The internal circulation short-cut denitrification filter according to claim 1, characterized in that, The other end of the cover plate (102) is provided with an inspection door (103), and the inspection door (103) is provided with a transparent observation window (103a) in the middle. The inspection door (103) is located directly above the water collection chamber.

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