Integrated large-scale metal equipment for high-strength biological sewage treatment

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to high-strength integrated large metal equipment for biological sewage treatment, which comprises a water inlet pipe, a water outlet pipe, sewage, activated sludge, an aeration oxygen supply device and a metal shell so as to form a pool-shaped biological sewage treatment system. A metal shell on the periphery of the pool-shaped biological sewage treatment system is composed of hollow double-layer metal composed of two layers of metal plates and a core pipe in the middle, the hollow double-layer metal is formed through hot air copper brazing of the core pipe, and an air channel and a flow channel are formed between the inner gap and the outer gap of the core pipe. The activated sludge is formed by combining an oxidation ditch and an MBR, the aeration oxygen supply device comprises a fixed rubber aeration pipe, and the metal shell is made of a stainless steel material.The device has a heat preservation measure, the sludge activity can be improved, the equipment strength is high, the overall installation efficiency of the equipment is high, rapid splicing is achieved, and the service life of the equipment is prolonged. Compared with other large-scale sewage biological treatment equipment, the cost is lower.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and particularly relates to an integrated large-scale metal device for high-strength sewage biological treatment. Background Technique

[0002] At present, most sewage treatment plants are concrete equipment, which has the advantage of a long traditional service life (more than 50 years). However, its heat preservation effect is poor, the construction period is long, and the low-carbonization problem has not been effectively solved. There have already appeared shells made mainly of stainless steel and carbon steel. For weathering steel and aluminum alloy materials, the construction problems have been well solved, but the problems of leakage prevention (using rubber welds) and heat preservation have not been solved, resulting in a relatively low ammonia nitrogen removal rate. The environmental protection department of Shanxi Province requires to increase mandatory heat preservation measures to achieve the purpose of removing COD, ammonia nitrogen, and total nitrogen in winter. There has gradually appeared an aesthetic design in the market, but the aesthetics and strength cannot be guaranteed.

[0003] The developed shell material is integrally formed and effectively combined with the company's process and equipment patent technology. That is, an assembled structure is adopted, which can reduce the floor area; after adding heat preservation measures, the sludge activity is increased, the sludge concentration is increased, and the ammonia nitrogen and total nitrogen removal rates are improved; the metal skeleton adopted by the assembled core plate technology has strong compressive resistance, and the test data shows that the service life can reach 1000 years. Content of the Utility Model

[0004] The purpose of the utility model is to provide an integrated large-scale metal device for high-strength sewage biological treatment to solve the problems put forward in the above background technique.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: An integrated large-scale metal device for high-strength sewage biological treatment, including an inlet and outlet pipe, sewage, activated sludge, an aeration and oxygen supply device, and a metal shell, thus forming a pool-shaped sewage biological treatment system. The metal shells around the pool-shaped sewage biological treatment system are all composed of a hollow double-layer metal formed by two layers of metal plates and the core pipes in the middle. The hollow double-layer metal is formed by hot air copper brazing welding of the core pipes.

[0006] Preferably, an air channel and a flow channel are formed between the inner and outer voids of the core pipe. The activated sludge is formed by the combination of an oxidation ditch and an MBR. The aeration and oxygen supply device includes a fixed rubber aeration pipe, and the metal shell is made of stainless steel.

[0007] Preferably, the hollow plate includes a bottom plate, a frame, and a strengthening column, and is assembled and welded through the cooperation of the bottom plate, the frame, and the strengthening column. The pool wall and the bottom plate of the metal shells around the pool-shaped sewage biological treatment system are hollow double-layer metals.

[0008] Preferably, a heat-insulating filler is filled between the sandwich cores of the metal plate and the core tube. The material of the heat-insulating filler between the sandwich cores is rock wool. The core tube array inside the metal shell is formed by copper brazing at 1078 °C.

[0009] Preferably, the hot air brazing uses hot air as the medium. There are gaps in the array of core tubes, and hot air is blown into the gaps at high speed.

[0010] Preferably, a hinge is connected between the two metal plates and is formed by copper brazing to connect the two metal plates.

[0011] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: The present utility model combines an oxidation ditch with MBR, which is a new water treatment technology combining the activated sludge method and the membrane separation technology to remove organic substances in sewage: The oxidation ditch accelerates the degradation and oxidation of organic substances by providing a large number of microbial flora, thereby achieving the removal of organic substances; Removing nutrients such as nitrogen and phosphorus in sewage: The microbial flora in the oxidation ditch can also utilize nutrients such as nitrogen and phosphorus in the sewage, oxidize and degrade them, thereby achieving the removal of these substances; Improving water quality: The water quality after being treated by the oxidation ditch will also be significantly improved, enabling the treated water body to meet various discharge standards;

[0012] The two metal plates are connected by copper brazing and hinges and are formed by copper brazing at 1078 °C. It uses hot air as the medium instead of traditional heat radiation. The connection strength is high and it will not easily deform. There are gaps in the core tube array, and hot air is blown into it at an extremely high speed, making the entire metal plate extremely evenly heated. Due to the even heating, huge plates can be welded flat as a mirror and will never generate stress deformation;

[0013] Through the prefabricated structure, the floor area is reduced; the heat insulation measure of double-layer metal is adopted to increase the sludge activity, improve the sludge concentration, and increase the removal rates of ammonia nitrogen and total nitrogen; and the overall equipment adopts the assembled core plate technology to form a permanent rectangular sewage treatment biological pond. The test data shows that the service life can reach 1000 years, the installation speed is fast, heat insulation is provided, the reduction of the activity of activated sludge is avoided, the price cost is low, the speed of treating sewage is fast, and the service life is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0015] Figure 1 is the overall structural schematic diagram of the present utility model;

[0016] Figure 2 is the schematic diagram of the core tube structure and the heat-insulating filler of the present utility model;

[0017] Figure 3 It is a schematic diagram of the hinge welding position of the present utility model;

[0018] In the figure: 1, metal plate; 2, core tube; 3, heat preservation filler; 4, hinge. Specific embodiments

[0019] The technical solution of the present utility model will be further described in detail and non - restrictively with reference to the preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work belong to the scope of protection of the present utility model.

[0020] Please refer to Figures 1 - 3 , the present utility model provides a technical solution: an integrated large - scale metal device for high - strength sewage biological treatment, including an inlet and outlet pipe, sewage, activated sludge, an aeration and oxygen supply device, and a metal shell, thereby forming a pool - shaped sewage biological treatment system. The metal shells around the pool - shaped sewage biological treatment system are all composed of a hollow double - layer metal formed by two layers of metal plates 1 and the middle core tube 2, and the hollow double - layer metal is formed by hot - air copper brazing through the core tube 2.

[0021] An air passage and a flow passage are formed between the inside and the external voids of the core tube 2. The activated sludge is formed by the combination of an oxidation ditch and an MBR. The aeration and oxygen supply device includes a fixed rubber aeration pipe, and the metal shell is made of stainless steel.

[0022] The hollow plate includes a bottom plate, a frame, and a strengthening column, and is formed by welding and assembling in cooperation with the bottom plate, the frame, and the strengthening column. The pool wall and the bottom plate of the metal shells around the pool - shaped sewage biological treatment system are hollow double - layer metals.

[0023] A heat - preservation filler 3 is filled between the sandwich of the metal plate 1 and the core tube 2. The material of the heat - preservation filler 3 between the sandwich is rock wool. The array of core tubes 2 inside the metal shell is formed by copper brazing at 1078 °C.

[0024] Hot - air brazing uses hot air as a medium. There are voids in the array of the core tube 2, and hot air is blown into the voids at high speed.

[0025] A hinge 4 is connected between the two layers of metal plates 1 and is formed by copper brazing to connect the two layers of metal plates 1.

[0026] Large integrated sewage biological treatment metal equipment consists of an inlet and outlet pipe, sewage, activated sludge, an aeration and oxygen supply device, and a rectangular metal shell to form a pool-shaped sewage biological treatment system. The shell around the pool-shaped sewage biological treatment system is a hollow double-layer metal composed of two layers of metal plates 1 and the core pipes 2 in the middle. The cross-section of the core pipes 2 of the hollow double-layer metal plate 1 used is honeycomb-shaped; hot steam is added to the air channels formed between the internal and external voids of the core pipes 2. The head and tail of the air channels are connected to the metal plates 1 to form an inlet and an outlet.

[0027] This biological treatment system is used to treat domestic sewage. It adopts a process that combines an oxidation ditch and MBR. There are partitions along the length direction of the metal shell. There are gaps at both ends of the partition and the metal shell, dividing the metal shell into two cavities, and the two cavities are hydraulically connected at the head and tail to form an oxidation ditch circulation channel. At least one side of the partition is provided with an MBR flat membrane device, and an outlet pipe is provided on the MBR flat membrane device.

[0028] The large metal equipment adopted has strong heat preservation performance, can increase the activity of sludge, has high equipment strength, and the overall installation efficiency of the equipment is fast, realizing rapid splicing. Compared with other large sewage biological treatment equipment, the cost is lower.

[0029] Adopting the combination of an oxidation ditch and MBR, a new water treatment technology that combines the activated sludge method and membrane separation technology to remove organic substances from sewage: The oxidation ditch accelerates the degradation and oxidation of organic substances by providing a large number of microbial communities, so as to achieve the removal of organic substances; removing nitrogen, phosphorus and other nutrients in sewage: The microbial communities in the oxidation ditch can also utilize nitrogen, phosphorus and other nutrients in sewage, oxidize and degrade them, so as to achieve the removal of these substances; improving water quality: The water quality after being treated by the oxidation ditch will also be significantly improved, making the treated water body meet various discharge standards.

[0030] Two layers of metal plates 1 are connected by copper brazing and the hinge 4, and are brazed at 1078 °C. It uses hot air as the medium instead of traditional thermal radiation. The connection strength is high and it will not deform easily. There are gaps in the core pipe 2 array, and hot air is blown in at an extremely high speed, making the whole metal plate 1 heated extremely evenly. Due to the uniform heating, huge plates can be welded flat as a mirror and will never produce stress deformation.

[0031] Through the assembled structure, the floor area is reduced; the heat preservation measure of double-layer metal is adopted to increase the activity of sludge, improve the sludge concentration, and increase the removal rate of ammonia nitrogen and total nitrogen; and the whole equipment adopts the assembled core plate technology to form a permanent rectangular sewage treatment biological pond. The test data shows that the service life can reach 1000 years, with fast installation speed, heat preservation, avoiding the reduction of the activity of activated sludge, low price cost, fast sewage treatment speed, and high service life.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, 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 to the present utility model.

[0033] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An integrated large-scale metal device for high-strength sewage biological treatment, comprising an inlet and outlet pipe, sewage, activated sludge, an aeration and oxygen supply device, and a metal housing, thereby forming a pool-shaped sewage biological treatment system, characterized in that: The metal shells around the pool-shaped sewage biological treatment system are all composed of a hollow double-layer metal consisting of two layers of metal plates (1) and the core pipes (2) in the middle. The hollow double-layer metal is formed by hot air copper brazing through the core pipes (2). An air channel and a flow channel are formed between the interior and the external voids of the core pipes (2). The activated sludge is formed by the combination of an oxidation ditch and an MBR. The aeration and oxygen supply device includes a fixed rubber aeration pipe. The metal shell is made of stainless steel. The hollow double-layer metal includes a bottom plate, a frame, and a reinforcing column, and is assembled by welding in cooperation with the bottom plate, the frame, and the reinforcing column. The pool wall and the bottom plate of the metal shell around the pool-shaped sewage biological treatment system are of a hollow double-layer metal. A heat-insulating filler (3) is filled between the sandwich of the metal plate (1) and the core pipe (2). The material of the heat-insulating filler (3) between the sandwich is rock wool. The array of core pipes (2) inside the metal shell is formed by copper brazing at 1078°C. The hot air brazing uses hot air as a medium. There are voids in the array of the core pipes (2), and hot air is blown into the voids at high speed. A hinge (4) is connected between the two layers of the metal plates (1) and is formed by copper brazing to connect the two layers of the metal plates (1).

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