Efficient SBR aerobic biochemical treatment device

Abstract

The utility model provides a high-efficiency SBR (sequencing batch reactor) aerobic biochemical treatment device, which solves the problems that the existing biochemical treatment of sewage in the petroleum and petrochemical industry needs to mainly solve the following difficulties: how to operate a biochemical device when the incoming water is irregular; oily water in the petroleum and petrochemical industry is poor in biodegradability, and microorganisms are efficiently enriched; how to improve the aerobic aeration utilization rate of a biochemical device; the device can be widely applied to the field of sewage treatment to realize smooth inlet and outlet water flow states and no cutoff. The device specifically comprises an outer cylinder, a water inlet pipeline is arranged on the side wall of the bottom of the outer cylinder, an inner cylinder is arranged in the outer cylinder, the inner cylinder is a vertically-through cylinder body, and the inner cylinder is fixed in the outer cylinder through a supporting frame; an aeration main pipeline is arranged on the outer cylinder, an aeration opening is formed in the aeration main pipeline, three aeration branch pipelines are arranged on the aeration main pipeline in a communicating manner, the three aeration branch pipelines extend into the inner cylinder, rotational flow aerators are arranged at the tail ends of the three aeration branch pipelines, and the three rotational flow aerators are distributed in a circumferential array manner in the horizontal direction.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and particularly relates to an efficient SBR aerobic biochemical treatment device. Background Art

[0002] The pollutants in the oily sewage of the petrochemical industry mainly include petroleum, suspended solids, COD, etc. Among them, non-dissolved oils and suspended solids (SS) are usually removed by pretreatment processes such as oil separation, sedimentation, and flotation. The organic pollutants dissolved in water (characterized by COD) need to be removed by oxidation and microbial biochemical treatment methods. The aerobic activated sludge method is mostly used in the microbial treatment methods commonly used in the petrochemical industry, and the SBR method is one of the commonly used treatment processes.

[0003] The oily sewage in the petrochemical industry mainly comes from oil depots, oil terminals and various refineries. Due to different production processes and raw materials, the incoming water rules and water quality vary greatly. Even if they are all oily sewage, their components and concentrations are also very different. For example, in the production rules of refineries, the water quality and incoming water frequency are relatively stable, but the production water volume and incoming water frequency generated by the storage of refined oil depots, oil terminals and crude oil depots are extremely unstable, which is a great challenge to the treatment process, especially biochemical treatment. Biochemical treatment requires both the content of organic matter in water and strong correlation of incoming water. Therefore, the selection and structural design of the microbial biochemical treatment device are crucial.

[0004] The biochemical treatment of sewage in the petrochemical industry needs to focus on solving the following difficulties:

[0005] 1) When the incoming water is irregular, how the biochemical device operates;

[0006] 2) The biodegradability of oily sewage in the petrochemical industry is poor. How to efficiently enrich microorganisms;

[0007] 3) How to improve the utilization rate of aerobic aeration in the biochemical device;

[0008] 4) How to make the flow state of the incoming and outgoing water of the device smooth without interruption. Summary of the Utility Model

[0009] The purpose of the utility model is to solve the above technical deficiencies and provide an efficient SBR aerobic biochemical treatment device.

[0010] To this end, the present utility model provides an efficient SBR aerobic biochemical treatment device, which includes an outer cylinder. An inlet pipe is provided on the bottom side wall of the outer cylinder, and an inlet is opened on the inlet pipe. An inner cylinder is arranged inside the outer cylinder. The inner cylinder is a cylinder that is vertically through, and the inner cylinder is fixed inside the outer cylinder through a support frame; An aeration main pipe is provided on the outer cylinder, an aeration port is opened on the aeration main pipe, and three aeration branch pipes are connected to the aeration main pipe. The three aeration branch pipes extend to the inside of the inner cylinder, and swirl aerators are arranged at the ends. The three swirl aerators are circumferentially arranged in an array in the horizontal direction; A first outlet pipe and a second outlet pipe are also provided on the outer cylinder. A first outlet is opened on the first outlet pipe, and a second outlet is opened on the second outlet pipe; The first outlet pipe extends above the inner cylinder, and the second outlet pipe extends below the inner cylinder.

[0011] Further, an overflow pipe is provided on the top side wall of the outer cylinder, an overflow port is opened on the overflow pipe, and the overflow port is arranged higher than the water level of the sewage pool.

[0012] Further, a plurality of transverse pipes are also connected to the first outlet pipe and the second outlet pipe for increasing the drainage area.

[0013] Further, the inlet pipe, the drain pipe, the overflow pipe and the transverse pipe are all perforated pipes, and the hole opening rate is greater than 50%.

[0014] Further, suspended fillers are added inside the outer cylinder for increasing the microbial concentration and the types of bacterial flora.

[0015] Further, a reinforcing ring is also arranged inside the outer cylinder for increasing the compressive capacity of the outer cylinder.

[0016] The present utility model provides an efficient SBR aerobic biochemical treatment device, which has the following beneficial effects:

[0017] The water flow state of this device is set as the lower-in and upper-out type. The bottom uses a perforated pipe for water inlet, with uniform water distribution, and is evenly distributed at the bottom of the pool, as close to the bottom of the pool as possible, reducing the low-oxygen area at the bottom.

[0018] The inner and outer cylinder structures are set, with internal aeration. The aeration and oxygen supply adopt swirl aerators, which are evenly distributed in the horizontal plane direction. Sufficient dissolved oxygen concentration is formed through swirl aeration, and at the same time, the air flow is used to turn upwards to form a circulating flow state between the inner and outer cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front structural schematic diagram of the present utility model;

[0020] Figure 2 is a back structural schematic diagram of the present utility model;

[0021] Figure 3It is a schematic diagram of the distribution of each pipeline after removing the outer cylinder of the present utility model;

[0022] Figure 4 It is a schematic diagram of the position of the swirl aerator of the present utility model;

[0023] Markings in the figure: 1. Outer cylinder; 2. Inner cylinder; 3. Water inlet; 4. Water inlet pipeline; 5. Drain port; 6. Drain pipeline; 7. Aeration port; 8. Main aeration pipeline; 9. First water outlet; 10. First water outlet pipeline; 11. Second water outlet; 12. Second water outlet pipeline; 13. Maintenance port; 14. Overflow port; 15. Overflow pipeline; 16. Swirl aerator; 17. Horizontal pipeline; 18. Support frame; 19. Reinforcing ring; 20. Aeration branch pipeline. Specific embodiments

[0024] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present utility model. The methods used in the present utility model are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercially available products unless otherwise specified.

[0025] As Figures 1-4 shown, the present utility model provides an efficient SBR aerobic biochemical treatment device, including an outer cylinder 1. A water inlet pipeline 4 is provided on the bottom side wall of the outer cylinder 1, and a water inlet 3 is opened on the water inlet pipeline 4. An inner cylinder 2 is arranged inside the outer cylinder 1. The inner cylinder 2 is a cylinder that penetrates up and down, and the inner cylinder 2 is fixed inside the outer cylinder 1 through a support frame 18. A main aeration pipeline 8 is provided on the outer cylinder 1. An aeration port 7 is opened on the main aeration pipeline 8. Three aeration branch pipelines 20 are connected to the main aeration pipeline 8. The three aeration branch pipelines 20 extend into the inner cylinder 2, and swirl aerators 16 are arranged at the ends. The three swirl aerators 16 are circumferentially arrayed in the horizontal direction. A first water outlet pipeline 10 and a second water outlet pipeline 12 are also provided on the outer cylinder 1. A first water outlet 9 is opened on the first water outlet pipeline 10, and a second water outlet 11 is opened on the second water outlet pipeline 12. The first water outlet pipeline 10 extends above the inner cylinder 2, and the second water outlet pipeline 12 extends below the inner cylinder 2.

[0026] An overflow pipeline 14 is provided on the top side wall of the outer cylinder 1. An overflow port 15 is opened on the overflow pipeline 14, and the overflow port 15 is set higher than the water level of the sewage tank. A drain pipeline 6 is also provided on the bottom side wall of the outer cylinder 1. A drain port 5 is opened on the drain pipeline 6. As Figure 3 shown, a plurality of horizontal pipelines 17 are also connected to the first water outlet pipeline 10 and the second water outlet pipeline 12 to increase the drainage area and improve the drainage rate.

[0027] The water inlet pipeline 4, the drain pipeline 6, the overflow pipeline 15, and the horizontal pipeline 17 are all perforated pipes, and the hole opening rate is greater than 50%.

[0028] During use, the outer cylinder 1 is installed at the bottom of the sewage tank. The pool water is pumped into the water inlet 3 through a lift pump. The air supply equipment supplies air into the main aeration pipeline 8 through the aeration port 7 for internal aeration of the inner cylinder 2. Adequate dissolved oxygen concentration is formed through swirling aeration. At the same time, the upward airflow is used to turn over and form a circulating flow state between the inner cylinder 2 and the outer cylinder 1.

[0029] The conventional operation process of this device operates in the SBR intermittent mode. After each cycle of operation, aeration is first stopped, sedimentation is carried out, and then drainage is performed (at this time, the second water outlet 11 is used). If continuous operation is required due to a large amount of water, the first water outlet pipe 10 is used for water discharge, and the device operates continuously. It is still bottom-inlet and top-outlet (at this time, the first water outlet 9 is used).

[0030] As Figure 3 shown, a reinforcing ring 19 is also provided inside the outer cylinder 1 to increase the compressive capacity of the outer cylinder 1. An inspection port 13 is also opened on the bottom side wall of the outer cylinder 1, which is normally closed during the operation of the device. Suspended fillers are added inside the outer cylinder 1. Based on the traditional activated sludge method, by adding fillers, the concentration of microorganisms and the types of microbial communities inside the device are increased, and the biochemical treatment efficiency and the anti-shock load of the device are improved.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "left", "right", "upper", "lower", "top", "bottom", "front", "rear", "inner", "outer", "back", "middle", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0032] However, the above are only specific embodiments of the present utility model, and the scope of implementation of the present utility model cannot be limited thereby. Therefore, the replacement of equivalent components or equivalent changes and modifications made according to the scope of patent protection of the present utility model should still fall within the scope covered by the claims of the present utility model.

Claims

1. A high-efficiency SBR aerobic biochemical treatment device, comprising an outer cylinder, a water inlet pipe is arranged on the bottom side wall of the outer cylinder, and a water inlet is opened on the water inlet pipe, characterized in that: An inner tube is arranged inside the outer tube, and the inner tube is a cylinder that passes through from top to bottom, and the inner tube is fixed inside the outer tube through a support frame; an aeration main pipe is arranged on the outer tube, and an aeration port is opened on the aeration main pipe, and three aeration branch pipes are connected to the aeration main pipe, and the three aeration branch pipes extend to the interior of the inner tube, and cyclone aerators are arranged at the ends, and the three cyclone aerators are distributed in a circular array in the horizontal direction; a first water outlet pipe and a second water outlet pipe are also arranged on the outer tube, and a first water outlet port is opened on the first water outlet pipe, and a second water outlet port is opened on the second water outlet pipe; the first water outlet pipe extends to the top of the inner tube, and the second water outlet pipe extends to the bottom of the inner tube.

2. A high-efficiency SBR aerobic biochemical treatment device according to claim 1, characterized in that: An overflow pipe is arranged on the top side wall of the outer cylinder, an overflow port is opened on the overflow pipe, and the overflow port is arranged higher than the water level of the sewage pool.

3. A high-efficiency SBR aerobic biochemical treatment device according to claim 2, characterized in that: The first water outlet pipe and the second water outlet pipe are also connected to a plurality of transverse pipes for increasing the drainage area.

4. A high-efficiency SBR aerobic biochemical treatment device according to claim 3, characterized in that: The water inlet pipe, the drain pipe, the overflow pipe and the transverse pipe are all perforated pipes, and the opening rate is greater than 50%.

5. A high-efficiency SBR aerobic biochemical treatment device according to any one of claims 1 to 4, characterized in that: Suspended fillers are added into the outer cylinder to increase the concentration of microorganisms and the types of bacterial flora.

6. A high-efficiency SBR aerobic biochemical treatment device according to claim 5, characterized in that: A reinforcement ring is also provided inside the outer cylinder to increase the pressure resistance of the outer cylinder.

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