Domestic sewage nitrogen and phosphorus removal purification equipment

Abstract

The utility model relates to nitrogen and phosphorus removal purification equipment for domestic sewage, which belongs to the technical field of sewage treatment and comprises a machine body, an aeration component, a stirring component and a combined filler, a water inlet pipe and a feeding pipe are arranged at the top end of the machine body; an exhaust pipe is arranged at the upper end of the machine body; a drainage pipe is arranged at the lower end of the machine body; the aeration assembly comprises an annular pipe, a communicating pipe and an air pump, the annular pipe is arranged in the treatment cavity, an inner cavity is formed in the annular pipe, a plurality of aeration heads are arranged on the upper end face of the annular pipe, and the annular pipe is connected with the air outlet end of the air pump through the communicating pipe; the stirring assembly is arranged on the machine body and is used for stirring and mixing materials in the treatment cavity; and the combined filler is arranged in the treatment cavity and is positioned above the annular pipe. The purification equipment can fully stir, promote growth and biofilm formation of microorganisms, and better perform biochemical action on sewage, so that a treatment agent and the sewage are fully and effectively mixed, and the purification efficiency and the purification quality of the sewage are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a domestic sewage denitrification and dephosphorization purification device. Background Art

[0002] Wastewater treatment is the process of purifying wastewater to meet the required water quality for discharge into a water body or reuse. Domestic wastewater purification equipment simply filters and removes impurities and odors from the wastewater. Pollutants such as nitrogen and phosphorus are not effectively removed, and can pollute water resources after discharge.

[0003] The domestic sewage treatment equipment currently on the market achieves the removal effect by adding corresponding treatment agents and mixing them with pollutants such as nitrogen and phosphorus in the water to generate precipitation. However, after adding the corresponding treatment agents, they need to be fully mixed with the sewage, otherwise there will be insufficient reaction. Currently, a stirring component is generally used to stir the sewage to achieve mixing, but the stirring range of the stirring component is limited and sufficient stirring and mixing cannot be achieved.

[0004] Therefore, it is necessary to design a domestic sewage denitrification and dephosphorization purification equipment to overcome the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a domestic sewage denitrification and phosphorus removal purification equipment, which can fully stir the sewage in the treatment chamber, promote the growth and biofilm formation of microorganisms, better carry out biochemical reactions on the sewage, and make the treatment agent and sewage fully and effectively mixed, so as to fully react with the nitrogen, phosphorus and other pollutants in the sewage to form precipitation, thereby ensuring the purification efficiency and purification quality of the sewage.

[0006] The utility model provides a domestic sewage denitrification and dephosphorization purification device, comprising: a machine body, an aeration component, a stirring component and a combined filler; a treatment chamber is provided inside the machine body, a water inlet pipe and a feeding pipe are provided at the top of the machine body, an air extraction pipe is provided at the upper end, a drainage pipe is provided at the lower end, and a sedimentation part is provided at the bottom; the aeration component comprises an annular pipe, a connecting pipe and an air pump, the annular pipe is arranged in the treatment chamber, an inner cavity is provided inside the annular pipe, a plurality of aeration heads are provided on the upper end surface of the annular pipe, and the annular pipe is connected to the air outlet end of the air pump through the connecting pipe; the stirring component is arranged on the machine body, and is used for stirring and mixing the materials in the treatment chamber; the combined filler is arranged in the treatment chamber and is located above the annular pipe.

[0007] Furthermore, the stirring assembly includes a driving motor, a connecting shaft, a connecting plate, a connecting block and a stirring rod. The upper end of the connecting shaft is rotatably installed on the top of the machine body. The driving motor drives the top of the connecting shaft. Multiple connecting plates are provided outside the connecting shaft. Each connecting plate is provided with multiple connecting blocks, and each connecting block is provided with a stirring rod.

[0008] Furthermore, a scraping rod is provided at one end of the stirring rod close to the inner wall of the processing chamber and abuts against the inner wall of the processing chamber.

[0009] Furthermore, an opening is provided at the upper end of the machine body, and a detachable seal is provided at the opening with a mounting portion.

[0010] Furthermore, a mud discharge port is provided at the bottom of the sedimentation section.

[0011] Furthermore, the annular tube is supported on the inner wall of the processing chamber by a support ring.

[0012] Furthermore, a limiting ring is provided at the upper end of the annular tube for limiting and positioning the position of the annular tube in the processing chamber.

[0013] Furthermore, multiple layers of annular tubes are provided in the processing chamber, all of which are connected to the connecting tube.

[0014] Furthermore, a composite filler is provided above each layer of annular tube.

[0015] Furthermore, the composite filler is distributed from the center of the processing chamber to the periphery.

[0016] The utility model has the following advantages and beneficial effects: the purification equipment can fully stir the sewage in the treatment chamber through the coordinated use of the aeration component, the stirring component and the combined filler, and at the same time the combined filler arranged between the layers of the stirring component can promote the growth and biofilm formation of microorganisms, thereby promoting the biochemical action of the microorganisms on the sewage, and at the same time make the treatment agent and the sewage fully and effectively mixed, so as to achieve the full reaction of the nitrogen, phosphorus and other pollutants in the sewage to form precipitation. Compared with the existing equipment that only mixes through the stirring component, the purification equipment can achieve more sufficient stirring and mixing, which can not only promote the purification of sewage by microorganisms, but also achieve better removal of pollutants such as nitrogen and phosphorus after the addition of the agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a domestic sewage denitrification and dephosphorization purification device according to a preferred embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional view of a domestic sewage denitrification and dephosphorization equipment according to a preferred embodiment of the present invention;

[0019] Figure 3 This is a structural diagram of an annular tube in a preferred embodiment of the present invention;

[0020] Figure 4 This is a schematic structural diagram of a composite filler according to a preferred embodiment of the present invention;

[0021] Description of Figure Numbers:

[0022] 1, body, 2, sediment, 3, drain pipe, 4, inlet pipe, 5, feeding pipe, 6, drive motor, 7, connecting shaft, 8, mounting portion, 9, connecting plate, 10, connecting block, 11, stirring rod, 12, annular pipe, 13, aeration head, 14, support ring, 15, check valve, 16, communication pipe, 17, inner cavity, 18, butt joint pipe, 19, air extraction pipe, 20, combined filler, 21, inner wall. DETAILED DESCRIPTION

[0023] In order to better understand the present application, the following examples are further illustration of the present application, but the content of the present application is not limited to the following examples.

[0024] As Figures 1 to 4 shown, a domestic sewage denitrification and phosphorus removal purification equipment, comprising: body 1, aeration assembly, stirring assembly and combined filler 20.

[0025] The body 1 is internally provided with a treatment cavity, and the body 1 is provided with an opening at the upper end, and the mounting portion 8 is detachably and sealingly arranged at the opening; the body 1 is provided with the water inlet pipe 4 and the feeding pipe 5 at the top end, the air extraction pipe 19 at the upper end, the drain pipe 3 at the lower end, and the sedimentation portion 2 at the bottom; the air extraction assembly is connected to the air extraction pipe 19.

[0026] The stirring assembly comprises a drive motor 6, a connecting shaft 7, a connecting plate 9, a connecting block 10 and a stirring rod 11, the connecting shaft 7 is rotatably installed on the mounting portion 8 through a bearing at the upper end, the drive motor 6 is drivingly connected to the top end of the connecting shaft 7, the connecting shaft 7 is externally provided with a plurality of connecting plates 9, each connecting plate 9 is provided with a plurality of connecting blocks 10, and each connecting block 10 is provided with a stirring rod 11. The drive motor 6 drives the connecting shaft 7, and then drives the stirring rod 11 to rotate through the connecting plate 9 and the connecting block 10, thereby playing a preliminary stirring role. At the same time of stirring, the setting of the aeration assembly can make the stirring of sewage and treatment agent more sufficient, the treatment agent in the wastewater is fully mixed and uniformly distributed in the water, the reaction is fully carried out, and the treatment effect is better.

[0027] The stirring rod 11 is provided with a scraping rod abutting against the inner wall 21 of the treatment cavity at one end close to the inner wall 21 of the treatment cavity, the stirring rod 11 rotates to stir, so that the treatment agent is preliminarily mixed with the sewage, and the setting of the scraping rod can scrape off the dirt on the inner wall 21 of the treatment cavity, thereby keeping the inner wall 21 of the body 1 clean.

[0028] The aeration assembly includes an annular tube 12, a connecting tube 16, and an air pump. The annular tube 12 is disposed within the treatment chamber and includes an inner cavity 17. Several aeration heads 13 are located on the upper end of the annular tube 12. The annular tube 12 is connected to the connecting tube 16 via a docking tube 18, which in turn is connected to the air pump outlet. In this embodiment, multiple layers of annular tubes 12 are located within the treatment chamber, all connected to the connecting tube 16. A one-way valve 15 is installed between the connecting tube 16 and the air pump.

[0029] Aeration is achieved through an air pump, and a one-way valve 15 prevents sewage from flowing back into the pump. During aeration, under aerobic conditions, ammonia nitrogen is oxidized by nitrifying bacteria into nitrite and nitrate. The gas inside the body 1 is extracted through the exhaust pipe 19, creating an anaerobic environment. Denitrifying bacteria are then added to reduce the nitrate and nitrite produced during the nitrification reaction into nitrogen gas. The carbon-containing organic matter in the sewage acts as an electron donor during the denitrification reaction, achieving the removal of nitrogen and organic matter from the sewage. A phosphorus removal agent is then added. When the treatment agent reacts with phosphorus-containing substances in the sewage to form a precipitate, the phosphorus-containing pollutants in the sewage are removed.

[0030] like Figure 2 and 3 As shown, the tube is supported by a support ring 14 and is installed on the inner wall 21 of the processing chamber. A limiting ring is provided at the upper end of the annular tube 12 to limit and position the annular tube 12 within the processing chamber. The limiting ring can limit and fix the outer side of the upper end of the annular tube 12. The installation of the annular tube 12 is simple and convenient because the limiting ring and the support ring 14 cooperate to limit and fix it.

[0031] In this embodiment, multiple layers of composite packing 20 are installed within the treatment chamber and positioned above the multi-layer annular tube 12. The composite packing 20 is distributed from the center of the treatment chamber outward. The composite packing 20 facilitates microbial growth and biofilm formation, providing a good attachment site for microorganisms and promoting the biochemical treatment of wastewater. The aeration assembly also provides sufficient oxygen for the microorganisms, while the stirring assembly ensures a more uniform mixing of pollutants in the wastewater. Through the synergistic effects of the composite packing 20, the aeration device, and the stirring device, the microorganisms can more effectively purify the wastewater.

[0032] At the same time, a mud discharge port is provided at the bottom of the sedimentation part 2, and the sedimentation part 2 is used to collect the sediment obtained by the reaction. After the drainage pipe 3 has discharged the sewage from the body 1, the precipitated sludge can be discharged through the mud discharge port.

[0033] The purification equipment can fully agitate the sewage in the treatment cavity through the cooperation of the aeration assembly, the stirring assembly and the combined filler 20, and the combined filler 20 arranged between the layers of the stirring assembly can promote the growth and biofilm of microorganisms, thereby promoting the biochemical action of the microorganisms on the sewage, and enabling the treatment agent to be fully and effectively mixed with the sewage, so that the nitrogen, phosphorus and other pollution components in the sewage are fully reacted to generate precipitates. Compared with the existing equipment which only mixes through the stirring assembly, the purification equipment can achieve more sufficient stirring and mixing, can not only promote the purification and treatment of the sewage by the microorganisms, but also has better removal and treatment effect on the nitrogen, phosphorus and other pollution components after adding the reagent.

[0034] The above is the preferred embodiment of the present application, of course, cannot be limited by this to limit the scope of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, can make a number of improvements and changes, these improvements and changes are also considered to be the protection scope of the present application.

Claims

1. A domestic sewage denitrification and phosphorus removal purification equipment, characterized in that: include: The machine body comprises a machine body, an aeration component, a stirring component and a combined filler; a processing chamber is provided inside the machine body, a water inlet pipe and a feeding pipe are provided at the top of the machine body, an air extraction pipe is provided at the upper end, a drainage pipe is provided at the lower end, and a sedimentation part is provided at the bottom; the aeration component comprises an annular tube, a connecting pipe and an air pump, the annular tube is arranged in the processing chamber, an inner cavity is provided inside the annular tube, a plurality of aeration heads are provided on the upper end surface of the annular tube, and the annular tube is connected to the air outlet end of the air pump through a connecting pipe; the stirring component is arranged on the machine body, and is used to stir and mix the materials in the processing chamber; the combined filler is arranged in the processing chamber and is located above the annular tube.

2. The domestic sewage denitrification and dephosphorization purification equipment as claimed in claim 1, characterized in that: The stirring assembly includes a drive motor, a connecting shaft, a connecting plate, a connecting block and a stirring rod. The upper end of the connecting shaft is rotatably installed on the top of the machine body. The drive motor is connected to the top of the connecting shaft. Multiple connecting plates are provided outside the connecting shaft. Each connecting plate is provided with multiple connecting blocks, and each connecting block is provided with a stirring rod.

3. The domestic sewage denitrification and dephosphorization purification equipment as claimed in claim 1, characterized in that: One end of the stirring rod close to the inner wall of the processing chamber is provided with a scraping rod abutting against the inner wall of the processing chamber.

4. The domestic sewage denitrification and dephosphorization purification equipment as claimed in claim 1, characterized in that: The upper end of the machine body is provided with an opening, and a detachable seal is provided at the opening with a mounting portion.

5. The domestic sewage denitrification and dephosphorization purification equipment as claimed in claim 1, characterized in that: A mud discharge port is provided at the bottom of the sedimentation section.

6. The domestic sewage denitrification and dephosphorization purification equipment as claimed in claim 1, characterized in that: The annular tube is supported on the inner wall of the processing chamber by a supporting ring.

7. The domestic sewage denitrification and dephosphorization purification equipment as claimed in claim 6, characterized in that: A limiting ring is provided at the upper end of the annular tube for limiting and positioning the position of the annular tube in the processing chamber.

8. The domestic sewage denitrification and dephosphorization equipment as claimed in claim 1, characterized in that: Multiple layers of annular pipes are arranged in the processing chamber and are all connected to the connecting pipe.

9. The domestic sewage denitrification and dephosphorization purification equipment as claimed in claim 2, characterized in that: Composite fillers are provided above each layer of annular tubes.

10. The domestic sewage denitrification and dephosphorization equipment as claimed in claim 1, characterized in that: The composite filler is distributed along the center of the processing chamber to the periphery.

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