Anaerobic tank stirring device in integrated equipment

Abstract

The utility model relates to an anoxic tank stirring device in integrated equipment, which comprises a cuboid equipment shell, the equipment comprises an anaerobic tank, an anoxic tank, an aerobic tank and a secondary sedimentation tank, an equipment feed port is connected with the anaerobic tank, the anaerobic tank is connected with the anoxic tank through a water passing hole, the anoxic tank is internally provided with a stirring device for preventing sludge sedimentation, and the aerobic tank is connected with the secondary sedimentation tank through a water passing hole. The anoxic tank stirring device is connected with the nitrification liquid return pipe through a pipeline, the anoxic tank is connected with the aerobic tank through a water passing hole, the aerobic tank contains an aeration pipeline and an aeration device connected with the aeration pipeline, the aerobic tank is connected with the secondary sedimentation tank through a water passing hole, the secondary sedimentation tank contains a sludge return pipe, and the equipment discharge port is connected with the secondary sedimentation tank. The anaerobic tank, the anoxic tank, the aerobic tank and the secondary sedimentation tank all comprise artificial crawling ladders and inspection manholes; in the equipment, an anoxic tank stirring device is connected with a nitrification liquid reflux pipe, and a nitrification liquid reflux pump is used for providing power for the stirring device.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, concretely relates to a kind of anoxic tank stirring device in integrated equipment. BACKGROUND

[0002] Integrated sewage treatment equipment process is mainly A 2 O process, i.e. anaerobic-anoxic-aerobic process, this process is mainly that different types of microorganisms in different process sections react with organic pollutants in sewage, so as to remove organic pollutants in sewage;Let microorganism and organic pollutants in sewage mix fully, can improve biochemical reaction efficiency, better play the role of microorganism, and stirring is the most effective way to let microorganism and organic pollutants in sewage mix fully, and aerobic tank can be mixed by aeration, but there are always some problems in the stirring of anaerobic tank and anoxic tank:

[0003] 1, there is basically no stirring device in the anoxic tank in the traditional integrated equipment, so under the condition that water flow rate is not enough, sludge is basically deposited at the bottom of the tank, causing anoxic sludge anaerobic, sludge concentration is reduced, and sludge basically does not contact pollutants, so that the sewage treatment effect is poor.

[0004] 2, there are problems in increasing submersible mixer in integrated equipment, first, integrated equipment handles small amount of water, and the volume is small, there is no matching small submersible mixing equipment on the market, and the rated power of existing mixing equipment is much higher than the use requirement, so that the mixing device not only has high price and large rated power, but also increases unnecessary power consumption, has high operation cost, and the failure rate of underwater operation motor is high, and the service life is short;Second, the volume of integrated equipment is small, and it is difficult to install and maintain submersible mixer.

[0005] 3, integrated equipment uses air stirring, and air quantity is not easy to control, which can easily destroy anoxic and anaerobic environment, and affect the sewage treatment effect.

[0006] Therefore, a new stirring device is needed for anoxic tank to improve the above problems. UTILITY MODEL CONTENT

[0007] To solve the above technical problems, the utility model provides an anoxic tank stirring device in integrated equipment.

[0008] The utility model discloses an integrated equipment's anoxic tank stirring device, including the cuboid equipment shell, the equipment contains anaerobic tank, anoxic tank, aerobic tank, two sedimentation tanks, and equipment feed inlet is connected with anaerobic tank, and anaerobic tank is connected with anoxic tank through the water hole, and there is the stirring device of preventing sludge deposition in anoxic tank, and anoxic tank stirring device and nitration liquid reflux pipe are connected through the pipeline, and anoxic tank is connected with aerobic tank through the water hole, and aerobic tank contains aeration pipeline and the aeration device connected with aeration pipeline, and aerobic tank is connected with two sedimentation tanks through the water hole, and two sedimentation tanks contain sludge reflux pipe, and equipment discharge port is connected with two sedimentation tanks, and anaerobic tank, anoxic tank, aerobic tank, two sedimentation tanks all contain artificial cat ladder and overhaul manhole.

[0009] In the above structure, the anoxic tank stirring device is connected with the nitration liquid reflux pipe through a pipeline.

[0010] In the above structure, the anoxic tank stirring device pipeline is one of a PVC pipeline, a carbon steel corrosion-proof pipeline and a stainless steel pipeline.

[0011] In the above structure, the anoxic tank stirring device pipeline has a hole angle of 45 degrees symmetrically downward on both sides, a hole size of 5-10 mm and a hole spacing of 100 mm.

[0012] In the above structure, the nitration liquid reflux pipe, the aeration pipeline and the sludge reflux pipe are one of a PVC pipeline, a carbon steel corrosion-proof pipeline and a stainless steel pipeline.

[0013] In the above structure, the aeration device is one of a microporous aeration disc, a tubular aerator and a cyclone aerator.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1. The utility model discloses an integrated equipment's anoxic tank increases new stirring device, and compared with the integrated equipment without anoxic tank stirring, can better prevent anoxic sludge from sinking anaerobically, and through stirring sludge and sewage, better mixing contact can be realized, the efficiency of biochemical reaction is improved, and the processing capacity of the equipment is increased without increasing the equipment volume.

[0016] 2. The utility model discloses an integrated equipment's anoxic tank stirring device, and the anoxic tank stirring device is connected with the nitration liquid reflux pipe, and the power of the stirring device is provided by using the nitration liquid reflux pump, so that the stirring effect is achieved, and other mechanical stirring devices do not need to be additionally increased, can be installed during the production of the integrated equipment, and do not need to be installed and constructed on the spot, so that the production cost, the installation cost and the operation and maintenance cost are saved.

[0017] 3. The anoxic tank stirring device in the integrated equipment described in this utility model uses a nitrification liquid return pump to provide power for the stirring device to achieve the stirring effect. When the nitrification liquid returns to the anoxic tank, it will bring back some oxygen. While stirring, the oxygen required for the anoxic environment of the anoxic tank is met. There is no need to add an additional aeration stirring device, and there is no need to specially control the air volume of the aeration device to prevent excessive air volume from damaging the anoxic environment and affecting the treatment effect of the anoxic tank, thus saving manpower, financial resources and materials. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the elevation structure of an embodiment of this utility model.

[0020] Figure 2 This is a schematic diagram of the planar structure of an embodiment of the present invention.

[0021] In the diagram: 1. Equipment feed inlet; 2. Water passage; 3. Anoxic tank mixing device; 4. Nitrified liquid return pipe; 5. Aeration pipe; 6. Aeration device; 7. Sludge return pipe; 8. Ladder; 9. Maintenance manhole; 10. Equipment discharge outlet; Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of the anoxic tank stirring device in the integrated equipment of this utility model is provided through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit its scope.

[0023] like Figure 1 As shown, the anoxic tank mixing device in the integrated equipment includes a rectangular equipment shell. The equipment includes an anaerobic tank, an anoxic tank, an aerobic tank, and a secondary sedimentation tank. The equipment inlet 1 is connected to the anaerobic tank. The anaerobic tank and the anoxic tank are connected through a water passage 2. The anoxic tank has a mixing device 3 to prevent sludge sedimentation. The anoxic tank mixing device 3 is connected to the nitrification liquid return pipe 4 through a pipe. The anoxic tank and the aerobic tank are connected through the water passage 2. The aerobic tank contains an aeration pipe 5 and an aeration device 6 connected to the aeration pipe 5. The aerobic tank and the secondary sedimentation tank are connected through the water passage 2. The secondary sedimentation tank contains a sludge return pipe 7. The equipment outlet 10 is connected to the secondary sedimentation tank. The anaerobic tank, anoxic tank, aerobic tank, and secondary sedimentation tank all contain a ladder 8 and a maintenance manhole 9.

[0024] In the above structure, the anoxic tank stirring device 3 is connected to the nitrification liquid return pipe 4 via a pipeline.

[0025] In the structure, the pipeline of the anoxic tank stirring device 3 is one of PVC pipeline, carbon steel anticorrosion pipeline and stainless steel pipeline.

[0026] In the structure, the pipeline of the anoxic tank stirring device 3 is one of PVC pipeline, carbon steel anticorrosion pipeline and stainless steel pipeline.

[0027] In the structure, the pipeline of the anoxic tank stirring device 3 is one of PVC pipeline, carbon steel anticorrosion pipeline and stainless steel pipeline.

[0028] In the structure, the pipeline of the anoxic tank stirring device 3 is one of PVC pipeline, carbon steel anticorrosion pipeline and stainless steel pipeline.

[0029] The anoxic tank stirring device in the integrated equipment is connected with the nitration liquid reflux pipeline through a pipeline, the nitration liquid reflux pipeline refluxes the nitration liquid in the aerobic tank in the latter stage of the A 2 O process to the anoxic tank in the former stage of the process, the nitration liquid contains nitrate nitrogen produced by the oxidation of ammonia nitrogen by the nitration bacteria, and after refluxing to the front end, the nitrate nitrogen can be mixed with the organic matter in the water in the anoxic tank and be subjected to denitrification by the denitrification bacteria to remove total nitrogen, the nitration liquid reflux pipeline is an indispensable part in the A 2 O process, therefore, the anoxic tank stirring device is connected with the nitration liquid reflux pipeline through a pipeline, the nitration liquid reflux pump is used to provide power for the anoxic tank stirring device, the nitration liquid is discharged from the hole in the pipeline of the stirring device at an angle of 45 degrees downwardly, and the bottom of the anoxic tank is stirred to prevent sludge deposition.

[0030] Compared with the integrated equipment without the anoxic tank stirring device, the anoxic tank stirring device in the integrated equipment can better prevent anaerobic sludge from sinking to the bottom, the sludge and the sewage can be better mixed and contacted through stirring, the efficiency of biochemical reaction is improved, and the treatment capacity of the equipment is increased without increasing the equipment volume.

[0031] The anoxic tank stirring device in the integrated equipment is connected with the nitration liquid reflux pipeline, the nitration liquid reflux pump is used to provide power for the stirring device, the stirring effect is achieved, other mechanical stirring devices do not need to be additionally increased, the installation of the anoxic tank stirring device can be completed during the production of the integrated equipment, the on-site installation and construction are not needed, and production cost, installation cost and operation and maintenance cost are saved.

[0032] The integrated equipment lacks oxygen pool stirring device, utilizes nitration liquid reflux pump to provide power of stirring device, reaches stirring effect, nitration liquid refluxes to lack oxygen pool and will bring back part oxygen, satisfies oxygen required by lack oxygen environment of lack oxygen pool at the same time of stirring, does not need to increase aeration stirring device additionally, does not need to control gas volume of aeration device specially, prevents it gas volume to be too big and destroys lack oxygen environment, influences treatment effect of lack oxygen pool, saves manpower, financial resources and material resources.

[0033] The above-mentioned embodiments only express the implementation manners of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent scope. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. An anoxic tank stirring device in an integrated plant, comprising a cuboid-shaped plant shell, characterized by: The device comprises an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a device feed inlet (1) connected with the anaerobic tank, the anaerobic tank connected with the anoxic tank through a water passage (2), a stirring device (3) in the anoxic tank for preventing sludge precipitation, the stirring device (3) in the anoxic tank connected with a nitrification liquid reflux pipe (4) through a pipeline, the anoxic tank connected with the aerobic tank through the water passage (2), the aerobic tank containing an aeration pipeline (5) and an aeration device (6) connected with the aeration pipeline (5), the aerobic tank connected with the secondary sedimentation tank through the water passage (2), the secondary sedimentation tank containing a sludge reflux pipe (7), a device discharge outlet (10) connected with the secondary sedimentation tank, the anaerobic tank, the anoxic tank, the aerobic tank and the secondary sedimentation tank all containing a man-made ladder (8) and an inspection manhole (9).

2. The apparatus according to claim 1, wherein the stirring device is characterized by, The pipeline of the stirring device (3) in the anoxic tank is one of a PVC pipeline, a carbon steel corrosion-proof pipeline and a stainless steel pipeline.

3. The apparatus according to claim 1, wherein the stirring device is characterized by, The pipeline of the stirring device (3) in the anoxic tank is one of a PVC pipeline, a carbon steel corrosion-proof pipeline and a stainless steel pipeline.

4. The apparatus according to claim 1, wherein the stirring device is characterized by, The pipeline of the stirring device (3) in the anoxic tank is one of a PVC pipeline, a carbon steel corrosion-proof pipeline and a stainless steel pipeline.

5. The apparatus according to claim 1, wherein the stirring device is characterized by, The aeration device (6) is one of a microporous aeration disc, a tubular aerator and a cyclone aerator.

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