Replaceable modular deep denitrification device

Abstract

The utility model relates to a replaceable modularized deep denitrification device, which belongs to the technical field of water treatment, and comprises a water inlet distribution area, a denitrification reaction area, a water outlet area, an aeration system and modularized denitrification equipment, the water inlet distribution area is connected with a water inlet pipe and a plurality of water outlet connecting pipes, the denitrification reaction area is divided into a plurality of denitrification reaction tanks, and the water outlet area is connected with the aeration system. The water inlet end of each denitrification reaction tank is at least connected with one connecting pipe, the upper ends of the water outlet ends of the plurality of denitrification reaction tanks are respectively connected with the water outlet area, the aeration end of the aeration system extends into the plurality of denitrification reaction tanks, and modular denitrification equipment is arranged in each denitrification reaction tank and is positioned between the water inlet end and the water outlet end of the denitrification reaction tank; the modularized denitrification equipment comprises a shell and denitrification resin filled in the shell, and a plurality of micro holes are formed in the shell. The device is good in treatment effect, small in investment, small in occupied area, low in operation cost, easy to operate, rapid to start, stable in operation, high in applicability and suitable for upgrading and reconstruction of sewage plants.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a replaceable modular deep denitrification device. Background Art

[0002] At present, nitrate nitrogen removal technology is mainly divided into biological method, membrane separation method, resin ion exchange method, etc. The biological method uses denitrifying bacteria to degrade nitrate into nitrogen gas. The application scope of the biological method is limited and the process conditions are difficult to control. The membrane separation method is subject to certain restrictions in application due to the problems of high treatment cost, high pre-treatment requirements, and easy secondary pollution. The resin adsorption ion exchange denitrification method has the characteristics of mature technology, simple regeneration, convenient operation and management, high degree of nitrate removal, and low operating cost. However, the commonly used resin denitrification equipment currently has resin filled inside the equipment, and the number is fixed. The number of nitrate ions adsorbed by the denitrification resin equipment is also fixed. After the resin is saturated with adsorption, the water intake needs to be stopped and it can be regenerated by brine before use. Suspended matter, grease, organic matter, metal ions, etc. in sewage will contaminate the resin, resulting in a decrease in the resin exchange capacity. After the equipment has been running for a period of time, the contaminated resin needs to be revived. Conventional resin denitrification equipment has low utilization rate, large resin consumption, and poor regeneration effect.

[0003] Therefore, it is necessary to design a replaceable modular deep denitrification device to overcome the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a replaceable modular deep denitrification device with good treatment effect, low investment, small footprint, low operating cost, simple operation, fast activation, stable operation, strong applicability, and suitable for sewage treatment plant upgrading and transformation.

[0005] The utility model provides a replaceable modular deep denitrification device, comprising: an inlet distribution area, a denitrification reaction area, a water outlet area, an aeration system and modular denitrification equipment, wherein the inlet distribution area is connected with an inlet pipe and a plurality of water outlet connecting pipes, the denitrification reaction area is divided into a plurality of denitrification reaction pools, the inlet end of each denitrification reaction pool is connected with at least one connecting pipe, the upper ends of the water outlet ends of the plurality of denitrification reaction pools are respectively connected with the water outlet area, the aeration end of the aeration system extends into the plurality of denitrification reaction pools, each denitrification reaction pool is provided with a modular denitrification equipment, and the modular denitrification equipment is located between the inlet end and the water outlet end of the denitrification reaction pool, and the modular denitrification equipment comprises a shell and a denitrification resin filled in the shell, and the shell is provided with a plurality of micro holes.

[0006] Furthermore, grooves into which the ends of the container shells are embedded are provided on the opposite side walls of the plurality of denitrification reaction tanks.

[0007] Furthermore, the multiple micro holes on the shell are evenly distributed on the side wall perpendicular to the water flow direction in the corresponding denitrification reaction tank.

[0008] Furthermore, a hanging ring is provided on the top of the shell.

[0009] Furthermore, each denitrification reaction tank is provided with a plurality of modular denitrification equipment.

[0010] Furthermore, the aeration system includes an aeration fan, an aeration main pipe, an aeration branch pipe and an aeration plate. The aeration fan is connected to multiple aeration branch pipes through the aeration main pipe. The multiple aeration branch pipes extend into multiple denitrification reaction tanks respectively. At least one aeration branch pipe is provided under the modular denitrification equipment in each denitrification reaction tank, and multiple aeration plates are provided on each aeration branch pipe.

[0011] Furthermore, an inlet nitrate ion detector is provided in the inlet distribution area.

[0012] Furthermore, an outlet water nitrate ion detector is provided at the outlet of each denitrification reaction tank.

[0013] Furthermore, an electric valve and a manual valve are provided on the connecting pipe.

[0014] Furthermore, the denitrification resin is a macroporous anionic nitrate ion resin, which has a spherical particle appearance, a polystyrene copolymer skeleton, a quaternary amine functional group, a particle size range of 0.3-1.2 mm, and a total exchange capacity of 1000 mol / m 3 Chlorine type, water content is 52±3% chlorine type, loading density is 700-750g / l.

[0015] The utility model has the following advantages and beneficial effects: the replaceable modular deep denitrification device has good treatment effect, low investment, small footprint, low operating cost, simple operation, fast activation, stable operation, strong applicability, and is suitable for sewage treatment plant upgrading and transformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a replaceable modular deep denitrification device according to a preferred embodiment of the utility model;

[0017] Figure 2 It is a side structural schematic diagram of a replaceable modular deep denitrification device according to a preferred embodiment of the utility model;

[0018] Figure 3 This is a schematic structural diagram of a modular denitrification device according to a preferred embodiment of the utility model;

[0019] Description of Figure Numbers:

[0020] 1. Water inlet distribution area, 11. Water inlet pipe, 12. Electric valve, 13. Manual valve, 14. Connecting pipe, 15. Water inlet nitrate ion detector,

[0021] 2. Denitrification reaction area, 21. Outlet nitrate ion detector,

[0022] 3. Water outlet area, 31. Water outlet pipe,

[0023] 4. Aeration system, 41. Aeration fan, 42. Aeration main pipe, 43. Aeration branch pipe, 44. Aeration plate,

[0024] 5. Modular denitrification equipment, 51. Lifting ring, 52. Shell, 53. Denitrification resin. DETAILED DESCRIPTION

[0025] For a better understanding of the present invention, the following embodiments are further explanations of the present invention, but the content of the present invention is not limited to the following embodiments.

[0026] like Figures 1 to 3 As shown, a replaceable modular deep denitrification device includes: an inlet distribution area 1, a denitrification reaction area 2, an outlet area 3, an aeration system 4 and a modular denitrification device 5.

[0027] like Figure 1 and Figure 2 As shown, the water inlet distribution area 1 is connected with a water inlet pipe 11 and a plurality of water outlet connection pipes 14, and a water inlet nitrate ion detector 15 is arranged in the water inlet distribution area 1 for detecting the water inlet. The denitrification reaction area 2 is divided into a plurality of denitrification reaction pools, and the water inlet end of each denitrification reaction pool is connected with at least one connection pipe 14, and the connection pipe 14 is provided with an electric valve 12 and a manual valve 13. In this embodiment, an electric butterfly valve and a manual butterfly valve are arranged for easy control.

[0028] At the same time, the upper ends of the outlet ends of the multiple denitrification reaction tanks are respectively connected to the outlet area 3, and the aeration end of the aeration system 4 extends into the multiple denitrification reaction tanks. Each denitrification reaction tank is provided with a modular denitrification device 5, and is located between the water inlet and the water outlet of the denitrification reaction tank. The modular denitrification device 5 includes a shell 52 and a denitrification resin 53 filled in the shell 52, and the shell 52 is provided with a plurality of micro holes.

[0029] At the same time, an outlet nitrate ion detector 21 is provided at the outlet of each denitrification reaction tank; by comparing the data of the inlet and outlet nitrate ion detectors, the adsorption saturation degree of the denitrification resin 53 in the modular denitrification equipment 5 is determined, so as to reasonably formulate a replacement cycle to ensure that the denitrification process is continuous, uninterrupted and efficient.

[0030] In actual use, the electric valve 12 and the outlet water nitrate ion detector 21 are controlled in linkage. When the outlet water nitrate ion detector 21 detects that the outlet water nitrate concentration exceeds the set warning value, which can be 90% of the total nitrogen execution index in the emission standard, the electric valve 12 should receive the signal and close. When the electric valve 12 fails, the manual valve 13 should be closed in time. The manual butterfly valve should be normally open and only used in emergency.

[0031] Among them, the aeration system 4 includes an aeration fan 41, an aeration main pipe 42, an aeration branch pipe 43 and an aeration plate 44. The aeration fan 41 is connected to multiple aeration branch pipes 43 through the aeration main pipe 42. The multiple aeration branch pipes 43 extend into multiple denitrification reaction tanks respectively. At least one aeration branch pipe 43 is provided under the modular denitrification equipment 5 in each denitrification reaction tank, and multiple aeration plates 44 are provided on each aeration branch pipe 43.

[0032] like Figures 1 to 3 As shown, each denitrification reaction pool is provided with a plurality of modular denitrification devices 5. The two opposite side walls of the plurality of denitrification reaction pools are provided with grooves into which the ends of the housing 52 are embedded. The plurality of micro holes on the housing 52 are evenly distributed on the side walls perpendicular to the water flow direction in the corresponding denitrification reaction pool. A hanging ring 51 is provided on the top of the housing 52.

[0033] In this embodiment, a water outlet is set at the end of the denitrification reaction zone 2, which is built together with the water outlet zone 3; the denitrification reaction zone 2 is composed of three groups of independently operated denitrification reaction tanks in parallel, and two longitudinal grooves are set at a certain distance on each side wall of each group of denitrification reaction tanks. The uppermost part of the groove should be level with the top of the wall of the tank body, and the lowermost part is not less than 800mm higher than the bottom of the tank. The width of the groove is 15mm wider than the thickness of the modular denitrification equipment 5. The modular denitrification device is arranged between the grooves on the two walls of the denitrification reaction tank, and each denitrification reaction tank is provided with two groups of modular denitrification equipment 5. Aeration plates 44 in the aeration system 4 are evenly arranged below each group of modular denitrification equipment 5.

[0034] At the same time, three outlet holes are evenly arranged at the beginning of the water outlet area 3, which are respectively connected to the three groups of denitrification reaction tanks, and an outlet pipe 31 is arranged at the end. The modular denitrification equipment 5 is a hollow, lidless rectangular parallelepiped as a whole, including a hanging ring 51, a shell 52, and a denitrification resin 53, wherein the hanging ring 51 is located on both sides of the top of the shell 52, and the shell 52 is made of SS304 stainless steel as a whole, and laser holes are used, and the hole diameter shall not be greater than 0.3mm, and the micro holes shall have the characteristics of small hole diameter, large number, and uniform distribution.

[0035] Meanwhile, the denitrification resin 53 of this embodiment is a macroporous anionic nitrate ion resin, which has a spherical particle appearance, a polystyrene copolymer skeleton, a quaternary amine functional group, a particle size range of 0.3-1.2 mm, and a total exchange capacity of 1000 mol / m3 Chlorine type, water content is 52±3% chlorine type, loading density is 700-750g / l.

[0036] The denitrification device is simple and efficient, with higher total nitrogen removal efficiency and stability than the biological method. It adopts a replaceable modular deep denitrification device to avoid the need for regular scattered and trivial regeneration of the resin during equipment operation, optimize the resin regeneration mode, and improve the sewage unit operation efficiency.

[0037] The above is only a preferred implementation of the present utility model, which certainly cannot be used to limit the scope of rights of the present utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and changes can be made without departing from the principle of the present utility model, and these improvements and changes are also regarded as the protection scope of the present utility model.

Claims

1. A replaceable modular deep denitrification device, characterized in that: include: An inlet distribution area, a denitrification reaction area, an outlet area, an aeration system and modular denitrification equipment. The inlet distribution area is connected with an inlet pipe and a plurality of outlet connecting pipes. The denitrification reaction area is divided into a plurality of denitrification reaction tanks. The inlet end of each denitrification reaction tank is connected with at least one connecting pipe. The upper ends of the outlet ends of the plurality of denitrification reaction tanks are respectively connected with the outlet area. The aeration end of the aeration system extends into the plurality of denitrification reaction tanks. Each denitrification reaction tank is provided with a modular denitrification equipment, and the modular denitrification equipment is located between the inlet end and the outlet end of the denitrification reaction tank. The modular denitrification equipment comprises a shell and a denitrification resin filled in the shell. The shell is provided with a plurality of micro holes.

2. The replaceable modular deep denitrification device as claimed in claim 1, characterized in that: The two opposite side walls of the plurality of denitrification reaction tanks are provided with grooves into which the ends of the container shells are embedded.

3. The replaceable modular deep denitrification device as claimed in claim 1, characterized in that: The multiple micro holes on the shell are evenly distributed on the side wall which is perpendicular to the water flow direction in the corresponding denitrification reaction tank.

4. The replaceable modular deep denitrification device as claimed in claim 1, characterized in that: A lifting ring is provided on the top of the shell.

5. The replaceable modular deep denitrification device as claimed in claim 1, characterized in that: Each denitrification reaction tank is equipped with multiple modular denitrification equipment.

6. The replaceable modular deep denitrification device as claimed in claim 1, characterized in that: The aeration system includes an aeration fan, an aeration main pipe, an aeration branch pipe and an aeration plate. The aeration fan is connected to multiple aeration branch pipes through the aeration main pipe. The multiple aeration branch pipes extend into multiple denitrification reaction tanks respectively. At least one aeration branch pipe is provided under the modular denitrification equipment in each denitrification reaction tank, and multiple aeration plates are provided on each aeration branch pipe.

7. The replaceable modular deep denitrification device as claimed in claim 1, characterized in that: An inlet nitrate ion detector is installed in the inlet distribution area.

8. The replaceable modular deep denitrification device as claimed in claim 1, characterized in that: The outlet of each denitrification reaction tank is equipped with an outlet nitrate ion detector.

9. The replaceable modular deep denitrification device as claimed in claim 1, characterized in that: The connecting pipe is provided with an electric valve and a manual valve.

10. The replaceable modular deep denitrification device as claimed in claim 1, characterized in that: The denitrification resin is a macroporous anionic nitrate ion resin with a spherical particle appearance, a polystyrene copolymer skeleton, a quaternary amine functional group, a particle size range of 0.3-1.2 mm, and a total exchange capacity of 1000 mol / m 3 Chlorine type, water content is 52±3% chlorine type, loading density is 700-750g / l.

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