Device convenient for water conservancy mixing maintenance and capable of stabilizing denitrification rate

Abstract

The utility model relates to a device convenient for water conservancy mixing maintenance and stabilizing denitrification rate, which comprises an equipment body, the equipment body is of an open groove body structure, a first flange and a second flange are respectively arranged on two sides of the equipment body, the first flange is used for connecting a water inlet, the second flange is used for connecting a water outlet, and the first flange and the second flange are respectively connected with a water inlet and a water outlet. Mixed flow oxygen release guide plates are evenly arranged on the two sides of the inner wall of the equipment body to form a mixed flow oxygen release area, and a first dosing point, a second dosing point and a standby dosing port are formed in the bottom end of the equipment body. The detachable and socketable mixed flow oxygen release guide plate can be directly used for dosing and mixing of a built channel, the mixed flow oxygen release area promotes oxygen release by using tension of turbulent flow and vortex, excessive introduction of dissolved oxygen is reduced, damage to a denitrification biological system of an anoxic tank is avoided, the denitrification rate is stabilized, a plurality of dosing points are arranged, and the denitrification efficiency is improved. And the dosing and mixing requirements are met, and meanwhile, the investment and the operation cost are low, the operation is controllable and the maintenance is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to a device which is convenient for water mixing and maintenance and stabilizes the denitrification rate. Background Art

[0002] With the acceleration of my country's urbanization process and the enhancement of regional environmental awareness, the problem of drainage fluctuation caused by regional residents' water use and eating habits has become increasingly prominent. At the same time, the current environmental protection requires that each sewage treatment station improve its drainage standards. The carbon-nitrogen ratio C / N of urban domestic sewage shows a downward trend, the CODCr concentration of residents' drainage decreases, and the TN concentration increases. Combined with the system operation, it can be seen that the denitrification can be improved by adding an external carbon source or enhancing the return flow, and the optimization of drainage water quality can be achieved by precipitation or filtration after adding drugs.

[0003] Whether it is flocculant addition or carbon source addition, traditional dosing and mixing devices are mostly set up with mixing and stirring tanks, and use mixers for mixing. If conditions are limited, pipeline mixers are used, which either require a large one-time investment or are not conducive to equipment maintenance. Increasing the nitrification liquid return will inevitably carry a certain amount of dissolved oxygen in the water. If it is not controlled, it may damage the anoxic environment. If the denitrification is not thorough, the sludge return will cause a chain reaction to destroy the anaerobic phosphorus release effect, ultimately affecting the stability and safety of the system. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned problems. The present application proposes a device which is convenient for water conservancy mixing and maintenance and stabilizes the denitrification rate. The configuration of the detachable and socket-type mixed flow oxygen release guide plate can be directly used for mixing and dosing in the built channel. The mixed flow oxygen release zone utilizes the tension of turbulence and eddy current to promote oxygen release, reduces excessive introduction of dissolved oxygen, avoids damage to the denitrification biological system of the anoxic tank, and stabilizes the denitrification rate.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device that is convenient for hydraulic mixing maintenance and stabilizes the denitrification rate, including an equipment body, the equipment body is an open trough structure, and a first flange and a second flange are respectively provided on both sides of the equipment body, the first flange is used to connect the water inlet, and the second flange is used to connect the water outlet, and mixed flow oxygen release guide plates are evenly arranged on both sides of the inner wall of the equipment body to form a mixed flow oxygen release zone, and a first dosing point, a second dosing point and a spare dosing port are provided at the bottom of the equipment body.

[0006] Furthermore: the equipment body is made of SUS304 stainless steel.

[0007] Further: the mixed flow oxygen release guide plate is made of SUS304 stainless steel, with an installation angle of 30°, and the distance between the mixed flow oxygen release guide plates on both sides of the equipment body is 20 mm.

[0008] Further: the first dosing point is a PAC dosing point or a NaOH dosing point.

[0009] Further: the second dosing point is a PAM dosing point or a carbon source dosing point.

[0010] Further: the first dosing point, the second dosing point and the spare dosing port are connected to the equipment body by threaded connections.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] Mixed flow oxygen release guide plates are evenly installed inside the main body of the equipment to form a mixed flow oxygen release zone, which meets the oxygen release demand of the nitrification liquid reflux, thereby achieving hydraulic mixing and a stable denitrification rate; multiple dosing points are set on the outer wall of the equipment body to meet the dosing and mixing needs while having low investment and low operating costs; while meeting the investment in dosing equipment, it is convenient for maintenance and the operation is controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only for more clearly illustrating the embodiments of the utility model or the technical solutions in the prior art. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] In the figure: 1-equipment body, 2-first flange, 3-second flange, 4-mixed flow oxygen release guide plate, 5-first dosing point, 6-second dosing point, 7-spare dosing port, 8-flow state of flowing liquid. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand and implement the technical solution of the utility model, the utility model is further described below in conjunction with specific embodiments. However, the embodiments are only used as an explanation of the utility model and are not intended to limit the utility model.

[0017] like Figure 1 The device shown is convenient for hydraulic mixing maintenance and stabilizing the denitrification rate, including an equipment body 1. The equipment body 1 is made of SUS304 stainless steel, with an outer specification length of L900, a width B designed to be twice the diameter of the water inlet pipe, and a height H of B+200mm to ensure smooth flow. The equipment body 1 is an open trough structure, which is more convenient to maintain than a general pipeline mixer.

[0018] A first flange 2 and a second flange 3 are respectively provided on both sides of the equipment body 1. The first flange 2 is used to connect the water inlet, and the second flange 3 is used to connect the water outlet. The flange connection is convenient for modular splicing.

[0019] Mixed flow oxygen release guide plates 4 are evenly arranged on both sides of the inner wall of the equipment body 1. The mixed flow oxygen release guide plates 4 are welded on both sides of the equipment body 1 to form a mixed flow oxygen release zone. The mixed flow oxygen release guide plates 4 are made of SUS304 stainless steel and are installed at an angle of 30°. While achieving mixed flow, turbulence and eddy current effects can be used to enhance mixing and oxygen release. The mixed flow oxygen release guide plates 4 on both sides of the equipment body 1 are spaced 20 mm apart. Combined with the installation method of the mixed flow oxygen release guide plates 4 on both sides of the equipment body 1, the center flow van der Waals force can be used to promote air precipitation. The mixed flow oxygen release guide plate socket-type installation can be used for dosing and mixing enhancement in built channels.

[0020] The bottom of the equipment body 1 is provided with a first dosing point 5, a second dosing point 6 and a spare dosing port 7 and connected by threads. The first dosing point 5 is a PAC dosing point or a NaOH dosing point, and the second dosing point 6 is a PAM dosing point or a carbon source dosing point.

[0021] When the device is working, sewage enters the equipment body 1 through the water inlet connected to the first flange 2, and according to the use requirements, the medicine is added through the first dosing point 5, the second dosing point 6, and the spare dosing port 7. The mixed flow oxygen release guide plate 4 is used to form turbulence and eddy current, and after the medicine is fully mixed and oxygen is released, it is discharged from the water outlet connected to the second flange 3. In order to ensure stable operation, regular inspection and cleaning are required during use.

[0022] Preferred: The water inlet volume calculation of the device of the utility model needs to be considered based on the peak water volume, and the super height can be adjusted in combination with usage habits, but it cannot be less than 150mm;

[0023] Preferably: the appearance specification setting of the equipment body 1 needs to be adjusted appropriately according to the modular requirements of the drawing.

[0024] The mixed flow oxygen release guide plate 4 of the device must be implemented strictly according to the installation angle and spacing to meet the hydraulic operation requirements.

[0025] The contents not described in detail in the present invention are all prior art.

[0026] The above is only a preferred embodiment of the utility model, and is not limited to the description in the specification and implementation. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the utility model patent application should be included in the scope of the utility model patent application.

Claims

1. A device for facilitating hydraulic mixing maintenance and stabilizing denitrification rate, comprising a device body (1), characterized in that: The equipment body (1) is an open tank structure. A first flange (2) and a second flange (3) are respectively provided on both sides of the equipment body (1). The first flange (2) is used to connect to a water inlet, and the second flange (3) is used to connect to a water outlet. Mixed flow oxygen release guide plates (4) are evenly arranged on both sides of the inner wall of the equipment body (1) to form a mixed flow oxygen release zone. A first dosing point (5), a second dosing point (6) and a spare dosing port (7) are provided at the bottom end of the equipment body (1).

2. A device for facilitating hydraulic mixing maintenance and stabilizing denitrification rate according to claim 1, characterized in that: The device body (1) is made of SUS304 stainless steel.

3. A device for facilitating hydraulic mixing maintenance and stabilizing denitrification rate according to claim 1, characterized in that: The mixed flow oxygen release guide plate (4) is made of SUS304 stainless steel and has an installation angle of 30°. The distance between the mixed flow oxygen release guide plates (4) on both sides of the equipment body (1) is 20 mm.

4. The device for facilitating hydraulic mixing maintenance and stabilizing denitrification rate according to claim 1 is characterized in that: The first dosing point (5) is a PAC dosing point or a NaOH dosing point.

5. The device for facilitating hydraulic mixing maintenance and stabilizing denitrification rate according to claim 1 is characterized in that: The second dosing point (6) is a PAM dosing point or a carbon source dosing point.

6. The device for facilitating hydraulic mixing maintenance and stabilizing denitrification rate according to claim 1 is characterized in that: The first dosing point (5), the second dosing point (6) and the spare dosing port (7) are connected to the equipment body (1) by means of threads.

Images