aerated biological filter

Abstract

This invention relates to an aerated biological microbial belt, and is a device for wastewater treatment. It includes a flexible aeration pipe and a parallel effluent pipe. The effluent pipe has effluent holes. A set of mesh-like hanging membranes is arranged circumferentially around the effluent pipe and the aeration pipe. Each hanging membrane is arranged along the length of the effluent pipe and the aeration pipe, and along this length, the hanging membranes are fixed to the aeration pipe and / or the effluent pipe by spaced-apart fixing mechanisms. This invention can improve wastewater treatment quality and also features low cost, easy installation, and convenient removal.

Description

Technical Field

[0001] This invention relates to an aerated biological microbial belt and a wastewater treatment device. Background Technology

[0002] Currently, wastewater treatment often involves aeration, allowing aerobic bacteria to treat the wastewater through oxidation, reduction, and synthesis processes. The commonly used aerators in wastewater treatment tanks are H-shaped aerators, primarily made of metal and wrapped with an elastic membrane. These aerators have a small aeration area, resulting in poor wastewater treatment efficiency. Furthermore, the tank's size restricts their movement during maintenance and cleaning, creating significant operational obstacles. Additionally, these aerators are relatively expensive, increasing production costs. Summary of the Invention

[0003] The purpose of this invention is to disclose an aerated biological microbial belt that is low in cost, easy to use, and can improve the effect of sewage treatment.

[0004] The present invention includes a flexible aeration pipe and a water outlet pipe running parallel to it. The water outlet pipe is provided with water outlet holes. A set of mesh film-coated nets are arranged around the water outlet pipe and the aeration pipe. Each film-coated net is arranged along the length direction of the water outlet pipe and the aeration pipe, and along the length direction, the film-coated nets are fixed to the aeration pipe and / or the water outlet pipe by spaced fixing mechanisms.

[0005] Furthermore, the length of the film mesh between two adjacent fixed points is greater than the length of the aeration pipe or the outlet pipe after it has been formed.

[0006] Furthermore, the attached film net is formed by folding or rolling up the mesh material from both sides towards the middle.

[0007] Furthermore, the attached film net is a woven net.

[0008] Furthermore, the aperture of the attached film mesh is 1-5 mm.

[0009] Furthermore, the outlet pipe and the aeration pipe are intertwined to form a spiral band.

[0010] Furthermore, the total area of ​​the water outlet holes on the water outlet pipe is smaller than the cross-sectional area of ​​the inner hole of the water outlet pipe.

[0011] Furthermore, an outer layer of film netting is fitted over the outlet pipe, aeration pipe, and film netting, and the pore size of the outer layer of film netting is larger than that of the film netting.

[0012] Furthermore, the aperture of the outer film mesh is 5-10mm.

[0013] All parts of this invention are made of flexible materials, so they can be arranged arbitrarily as needed, thereby overcoming the shortcomings of rigid materials and fixed-shape aeration structures in the current technology. As a result, a reasonable layout can be made for the required sewage treatment area, thereby improving the sewage treatment effect.

[0014] In addition, the structure of the biofilm in this invention facilitates the storage of aerobic bacteria and provides them with an oxygen-rich area, enabling them to react better with wastewater and further improve the wastewater treatment effect.

[0015] The outer membrane mesh in this invention not only facilitates the installation and removal of the invention, but also provides a secondary reaction process, thereby further improving the wastewater treatment effect.

[0016] This invention can be made from low-cost materials, making it inexpensive and thus greatly reducing production input and operating costs. Attached Figure Description

[0017] Figure 1 This is a structural diagram of an embodiment of the present invention, showing a portion of the aeration pipe and water pipe exposed at one end;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure after removing the outer layer of the film-coated netting at the front and part of the stacked film-coated netting;

[0019] Figure 3 for Figure 1 The left view;

[0020] Figure 4 for Figure 1 Another form of left view;

[0021] Among them, 1. outer film net, 2. water outlet pipe, 3. aeration pipe, 4. water outlet hole, 5. first film net, 6. second film net, 7. binding strap, 8. third film net. Detailed Implementation

[0022] As shown in the figure, this embodiment includes a water outlet pipe 2 and an aeration pipe 3. Both the water outlet pipe 2 and the aeration pipe 3 have a certain degree of flexibility. The water outlet pipe 2 can be made of corrugated pipe, while the aeration pipe 3 is made of microporous nano-aeration pipe. Water outlet holes 4 are arranged at intervals on the water outlet pipe 2. The cross-sectional area of ​​the inner hole of the water outlet pipe 2 perpendicular to its central axis is larger than the total area of ​​all its water outlet holes 4, thereby maintaining the water pressure during use, especially maintaining the water pressure of the water outlet holes at the end.

[0023] In this embodiment, the water outlet pipe 2 and the aeration pipe 3 run parallel to each other. They can be in a parallel structure, but it is best if they are intertwined to form a spiral band. This structure leaves a certain space between the water outlet pipe 2 and the aeration pipe 3, and allows them to support each other. Moreover, this structure also creates space on the spiral band formed by the water outlet pipe 2 and the aeration pipe 3.

[0024] A set of biofilm-coated nets is tied along the length of the spiral band formed by the outlet pipe 2 and the aeration pipe 3. These biofilm-coated nets are distributed around the periphery of the spiral band. The accompanying drawings of this embodiment show four biofilm-coated nets, including a first biofilm-coated net 5, a second biofilm-coated net 6, a third biofilm-coated net 8, and another biofilm-coated net. These biofilm-coated nets are not required to be evenly distributed around the spiral band. In particular, during use, certain sides of the spiral band, such as the side near the tank wall, may not have biofilm-coated nets.

[0025] Each film-attaching mesh in this embodiment is formed by rolling or folding a mesh material. It can be made of materials such as PE, and its aperture is generally about 1-5 mm. This invention does not limit the shape of these holes, nor does it limit the use of holes of the same shape and size on the same film-attaching mesh. That is, the holes on the same film-attaching mesh can be irregular, as long as their size is within the required range, and they do not need to be the same size. The aperture refers to the dimension in its smallest dimension direction.

[0026] The film-coating mesh in this embodiment can be rolled in one direction or using other rolling methods, but it is best to roll it from both sides towards the middle, thus forming two mesh rolls on one side. These mesh rolls have a certain degree of looseness and should not be rolled too tightly. Figure 3 , Figure 4 As shown, the rolled-up portion can be located on the side adjacent to the spiral band or on the side away from the spiral band.

[0027] Along the spiral belt of this embodiment, the surrounding film net is tied at intervals by the binding strap 7. The length of each film net between two adjacent binding points is greater than the length of the spiral belt between the two points, that is, greater than the length of the formed water outlet pipe 2 and aeration pipe 3 between the two binding points, so that the film net is loose between the two binding points, rather than tightly attached to the spiral belt.

[0028] An outer layer of film-supporting net 1 is fitted over each film-supporting net. This outer layer of film-supporting net 1 is also made of woven mesh. While it can have a multi-layered structure, it is generally a single layer. The aperture of the outer layer of film-supporting net 1 is typically 5-10 mm.

[0029] In this embodiment, wastewater is continuously input into the outlet pipe 2 from the outside and discharged through its outlet hole 4. Oxygen-containing gas is continuously input through the microporous aeration pipe 3, where the wastewater and oxygen-containing gas meet around the spiral band. Aerobic bacteria then focus around the spiral band, and the attached biofilm provides them with a good storage environment. The uneven surface of the woven mesh itself also provides good conditions for the storage of aerobic bacteria. In this invention, the space between the outlet pipe 2 and the aeration pipe 3 within the spiral band, as well as the space formed by the spiral band, provides an oxygen-rich living space for aerobic bacteria. Moreover, the rolled-up shape of the attached biofilm provides more storage space. Furthermore, due to the rolling method of the attached biofilm in this invention, under the action of the water from the outlet pipe 2 and the gas discharged from the aeration pipe 3, the rolled part will open to a certain extent, thereby increasing the contact area with wastewater and gas, and forming a certain degree of enclosure around the wastewater and gas. Obviously, the relatively loose attached biofilm can form a good enclosure around the spiral tube. Especially after a large number of aerobic bacteria are stored on the biofilm, the rate at which wastewater and gas are discharged from each biofilm slows down, thus promoting a more thorough reaction between the aerobic bacteria, wastewater, and gas, thereby improving the wastewater treatment effect. Of course, this also eliminates the need for excessively high-speed operation of the gas and water supply equipment, thereby reducing production and operating costs.

[0030] In this invention, the biofilm mesh and rotating belt are arranged inside the outer biofilm mesh 1, making all parts a single unit. This allows the invention to be easily pulled out of the reaction tank for cleaning and maintenance. The pore size of the outer biofilm mesh 1 is larger than that of the biofilm mesh, allowing the treated water to drain smoothly. Of course, some aerobic bacteria will also be stored on it, thus further treating the wastewater.

[0031] Furthermore, each part of the invention possesses a degree of flexibility, making it easy to arrange; that is, it can be placed at any position within the treatment tank to treat wastewater from each part. The various materials used are inexpensive, thereby significantly reducing the overall price of the invention and consequently lowering production input and operating costs.

[0032] Therefore, the present invention has the characteristics of low cost, good sewage treatment effect, and convenient installation, removal and maintenance.

Claims

1. An aerated biological microbial belt, characterized by: It includes a flexible aeration pipe and a flexible outlet pipe running alongside it. The outlet pipe and the aeration pipe are intertwined to form a spiral band. The outlet pipe is provided with an outlet hole. A set of mesh film nets are arranged around the outlet pipe and the aeration pipe. Each film net is arranged along the length of the outlet pipe and the aeration pipe, and the film nets along the length are fixed to the aeration pipe and / or the outlet pipe by spaced fixing mechanisms. The length of the film-supported net between two adjacent fixed points is greater than the length of the spiral band between those two points; The attached film net is made by folding or rolling up a mesh material from both sides to the middle; The outlet pipe, aeration pipe, and biofilm mesh are all fitted with an outer biofilm mesh. The pore size of the outer film mesh is larger than that of the film mesh.

2. The aerated biological microbial belt according to claim 1, characterized in that: The attached film net is a woven mesh.

3. The aerated biological microbial belt according to claim 1, characterized in that: The mesh size of the attached film net is 1-5mm.

4. The aerated biological microbial belt according to claim 1, characterized in that: The total area of ​​the water outlet holes on the water outlet pipe is smaller than the cross-sectional area of ​​the inner hole of the water outlet pipe.

5. The aerated biological microbial belt according to claim 1, characterized in that: The outer membrane mesh has a pore size of 5-10mm.

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