Strengthened sulfur autotrophic efficient denitrification integrated sewage treatment equipment

Abstract

The utility model relates to the technical field of sewage treatment, and discloses enhanced sulfur autotrophy efficient denitrification integrated sewage treatment equipment which comprises a tank body and a water tank arranged on the left side of the tank body, one side of the water tank is communicated with a water inlet pump through a pipeline, one side of the water inlet pump is communicated with the tank body through a pipeline, and the other side of the water inlet pump is communicated with the tank body through a pipeline. A first flow meter is arranged on the surface of a pipeline between the water inlet pump and the tank body; the collecting tank is arranged on the right side of the tank body; one side of the collecting tank is communicated with a backwashing water pump through a pipeline; according to the utility model, the effluent weir, the solid-liquid separation area, the microbial reaction area, the ferrous sulfide filler, the sulfur-based filler, the cushion layer and the supporting layer are arranged in the tank body, so that raw water can be quickly denitrified, and the dissolved oxygen of inlet water can be reduced through the internal circulation water pump, the internal circulation flowmeter, the backwashing water pump and the backwashing fan, so that the ascending velocity in the tank body is increased; nitrogen adhesion is prevented, so that the denitrification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an integrated sewage treatment device for strengthening sulfur autotrophic and efficient nitrogen removal. Background Art

[0002] The key and difficulty in the process of upgrading and transforming urban sewage treatment plants lies in the removal of total nitrogen.

[0003] The autotrophic denitrification technology currently available on the market is mainly a pool structure. Most autotrophic denitrifying microorganisms are facultative anaerobes, which can produce more energy when using O2 as an electron acceptor. Therefore, as the DO content increases, the utilization rate of nitrate in the wastewater decreases, which directly leads to a decrease in denitrification efficiency and the accumulation of a large number of nitrogen-containing intermediates. In the sewage denitrification system, 0.1 mg / L of oxygen will cause a decrease in the denitrification efficiency, and the expression and activity of almost all nitrogen compound reductases will be inhibited. 0.2% oxygen saturation in water will affect the removal of nitrates. After O2 is added, it will immediately inhibit nitrate reduction, and the nitrate removal rate will rise again after returning to anaerobic conditions. The presence of DO not only affects the denitrification rate, but also leads to an increase in sulfate and a decrease in pH. There are the following problems in the operation of autotrophic denitrification: First, the accumulation of nitrite will lead to a gradual decrease in denitrification efficiency; second, part of the nitrogen produced by denitrification will adhere to the surface of the filler, reducing the contact area between the sewage and the filler, resulting in a decrease in the denitrification reaction rate.

[0004] Therefore, in response to the above problems, we need to propose an integrated sewage treatment equipment with enhanced sulfur autotrophic and efficient nitrogen removal. Utility Model Content

[0005] The purpose of the utility model is to provide an integrated sewage treatment device for strengthening sulfur autotrophic and efficient nitrogen removal to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: an integrated sewage treatment equipment for enhanced sulfur autotrophic high-efficiency denitrification, including a tank body, and also including:

[0007] A water pool is arranged on the left side of the tank body, one side of the water pool is connected to a water inlet pump through a pipeline, one side of the water inlet pump is connected to the tank body through a pipeline, and a first flow meter is arranged on the surface of the pipeline between the water inlet pump and the tank body;

[0008] A collecting pool is arranged on the right side of the tank body, one side of the collecting pool is connected to a backwashing water pump through a pipeline, and the surface of the pipeline between the tank body and the collecting pool is connected to a backwashing fan.

[0009] Preferably, the left side of the top of the tank body is connected to a circulating water pump through a pipeline, and one side of the circulating water pump is connected to a pipeline between the water inlet pump and the tank body through a pipeline.

[0010] Preferably, the pipeline surface on the right side of the circulating water pump is connected to an internal circulation flow meter.

[0011] Preferably, a connecting frame is fixedly connected to the bottom of the circulating water pump, and the connecting frame is made of stainless steel.

[0012] Preferably, a water outlet pipe is connected to the top of the right side of the tank body, and one end of the water outlet pipe is connected to the collection tank.

[0013] Preferably, the inner cavity of the tank body is provided with a water outlet weir, a solid-liquid separation zone, a microbial reaction zone, ferrosulphide filler, a sulphur-based filler, a cushion layer and a supporting layer from top to bottom.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model can quickly denitrify raw water by arranging a water outlet weir, a solid-liquid separation zone, a microbial reaction zone, a sulfide iron filler, a sulfur-based filler, a cushion layer and a supporting layer inside the tank body; and can effectively reduce the dissolved oxygen in the inlet water, increase the rising flow rate of the liquid inside the tank body, prevent nitrogen from attaching, and thus improve the efficiency of the denitrification treatment work through an internal circulation water pump, an internal circulation flow meter, a backwash water pump and a backwash fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the integrated sewage treatment equipment for enhanced sulfur autotrophic high-efficiency denitrification provided by the utility model;

[0017] Figure 2 A schematic diagram of the structure of the water pool provided by the utility model;

[0018] Figure 3 A schematic diagram of the structure of the collection pool provided by the utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the tank provided by the utility model.

[0020] In the figure: 1. water tank; 2. water inlet pump; 3. first flow meter; 4. supporting layer; 5. cushion layer; 6. sulfur-based filler; 7. sulfide iron filler; 8. microbial reaction zone; 9. solid-liquid separation zone; 10. outlet weir; 11. outlet pipe; 12. collection tank; 13. backwash water pump; 14. backwash fan; 15. tank body; 16. circulating water pump; 17. internal circulation flow meter; 18. connecting frame. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 As shown, an integrated sewage treatment equipment for enhanced sulfur autotrophic high-efficiency denitrification includes a tank body 15, a water pool 1 is arranged on the left side of the tank body 15, one side of the water pool 1 is connected to a water inlet pump 2 through a pipeline, and the raw water inside the water pool 1 can be pumped into the inside of the tank body 15 through the water inlet pump 2, one side of the water inlet pump 2 is connected to the tank body 15 through a pipeline, and a first flow meter 3 is arranged on the surface of the pipeline between the water inlet pump 2 and the tank body 15, and the first flow meter 3 can calculate the raw water flow; a collecting pool 12 is arranged on the right side of the tank body 15, one side of the collecting pool 12 is connected to a backwashing water pump 13 through a pipeline, and the backwashing water pump 13 is arranged on one side of the tank body 15, and its function is to cooperate with the backwashing fan 14 to backwash the raw water, and the pipeline surface between the tank body 15 and the collecting pool 12 is connected to the backwashing fan 14.

[0023] A circulating water pump 16 is connected to the left side of the top of the tank body 15 through a pipeline. The circulating water pump 16 is located between the pipeline of the water inlet pump 2 and the tank body 15. Its function is to repeatedly process the raw water. One side of the circulating water pump 16 is connected to the pipeline between the water inlet pump 2 and the tank body 15 through a pipeline.

[0024] The pipeline surface on the right side of the circulating water pump 16 is connected to an internal circulation flow meter 17, which is located on one side of the circulating water pump 16 and functions to calculate the amount of raw water being circulated and processed.

[0025] A connecting frame 18 is fixedly connected to the bottom of the circulating water pump 16. The connecting frame 18 is located at the bottom of the circulating water pump 16 and functions to support and position the circulating water pump 16. The connecting frame 18 is made of stainless steel.

[0026] The top of the right side of the tank body 15 is connected with a water outlet pipe 11 , and one end of the water outlet pipe 11 is connected with a collection tank 12 .

[0027] The inner cavity of the tank body 15 is provided with a water outlet weir 10, a solid-liquid separation zone 9, a microbial reaction zone 8, a sulfide iron filler 7, a sulfur-based filler 6, a cushion layer 5 and a supporting layer 4 from top to bottom. By arranging the water outlet weir 10, the solid-liquid separation zone 9, the microbial reaction zone 8, the sulfide iron filler 7, the sulfur-based filler 6, the cushion layer 5 and the supporting layer 4 inside the tank body 15, the raw water can be rapidly denitrified.

[0028] Working principle: raw water enters the reactor tank 15 through the lifting pump, and the sewage passes through the supporting layer 4, cushion layer 5, sulfur-based filler 6, sulfur-iron filler 7, microbial reaction area 8, solid-liquid separator and outlet weir 10 from bottom to top. Part of the water circulates to the raw water inlet through the internal circulation water pump 16, and enters the reactor tank 15 after mixing with the raw water. The circulating water volume is 100%-300% variable frequency regulated, and part of the water flows into the outlet water collection tank 12 by gravity through the outlet pipe 11. The empty bed residence time of the filler is 30 minutes. After passing through the integrated sewage treatment equipment, the total nitrogen in the raw water can be reduced by about 10 mg / L. When the equipment has been running for a period of time and the filler layer has retained a lot of suspended matter, the backwashing system can be turned on for backwashing. First, turn on the backwashing fan 14 for air washing for 10 minutes, and then turn on the backwashing water pump 13 for air-water combined backwashing for 10 minutes, then turn off the backwashing fan 14 for water washing for 10 minutes, and finally turn off the backwashing water pump 13 to complete the entire backwashing process.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated sewage treatment device for enhanced sulfur autotrophic high-efficiency denitrification, comprising a tank body (15), characterized in that: Also includes: A water pool (1) is arranged on the left side of the tank body (15), one side of the water pool (1) is connected to a water inlet pump (2) via a pipeline, one side of the water inlet pump (2) is connected to the tank body (15) via a pipeline, and a first flow meter (3) is arranged on the surface of the pipeline between the water inlet pump (2) and the tank body (15); A collection tank (12) is arranged on the right side of the tank body (15), one side of the collection tank (12) is connected to a backwash water pump (13) via a pipeline, and the surface of the pipeline between the tank body (15) and the collection tank (12) is connected to a backwash fan (14).

2. The enhanced sulfur autotrophic and efficient nitrogen removal integrated sewage treatment equipment according to claim 1 is characterized in that: The left side of the top of the tank body (15) is connected to a circulating water pump (16) through a pipeline, and one side of the circulating water pump (16) is connected to the pipeline between the water inlet pump (2) and the tank body (15) through a pipeline.

3. The integrated sewage treatment equipment for enhanced sulfur autotrophic high-efficiency denitrification according to claim 2 is characterized in that: The pipeline surface on the right side of the circulating water pump (16) is connected to an internal circulation flow meter (17).

4. The integrated sewage treatment equipment for enhanced sulfur autotrophic high-efficiency denitrification according to claim 2 is characterized in that: A connecting frame (18) is fixedly connected to the bottom of the circulating water pump (16), and the connecting frame (18) is made of stainless steel.

5. The enhanced sulfur autotrophic and efficient nitrogen removal integrated sewage treatment equipment according to claim 1 is characterized in that: The top of the right side of the tank body (15) is connected to a water outlet pipe (11), and one end of the water outlet pipe (11) is connected to a collection pool (12).

6. The enhanced sulfur autotrophic and efficient nitrogen removal integrated sewage treatment equipment according to claim 1 is characterized by: The inner cavity of the tank body (15) is provided with a water outlet weir (10), a solid-liquid separation zone (9), a microbial reaction zone (8), a ferrous sulfide filler (7), a sulphur-based filler (6), a cushion layer (5) and a supporting layer (4) from top to bottom.

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