CN202297237U - Biological film carrier - Google Patents

Abstract

The utility model discloses a biofilm carrier, wherein the biofilm carrier comprises a regular quadrangular prism surface (1) with a height of H and a side length of the bottom surface a, and a plurality of square prism surfaces (1) are arranged inside the regular prism surface (1) respectively along the length direction. and a wavy partition in the width direction, the two sides of each partition are respectively connected to two opposite opposite sides. Through the above technical solution, the biofilm carrier of the present invention includes a regular quadrangular prism surface and a partition plate arranged inside the cylinder surface and dividing the interior of the cylinder surface into a plurality of spaces at intervals. Through the above structure, the biofilm carrier has ideal porosity, ventilation performance and water passing performance, and the specific surface area of the biofilm carrier is increased, the microbial load per unit volume of the carrier is increased, and the bioreaction tank is improved. volume load.

Description

a biofilm carrier

technical field

The utility model relates to a biofilm carrier, in particular to a biofilm carrier used for wastewater treatment.

Background technique

The biological contact oxidation method is a kind of wastewater biological treatment method derived from the biofilm method. It is a biological treatment technology between the activated sludge method and the biological filter, that is, a certain amount of biofilm carriers are filled in the biological contact oxidation tank. , using the biofilm grown on the carrier and sufficient oxygen supply, through biological oxidation, the pollutants in the wastewater are oxidized and decomposed to achieve the purpose of wastewater purification. The biological contact oxidation method has the advantages of both the activated sludge method and the biofilm method. This process has the characteristics of high efficiency and energy saving, small footprint, impact load resistance, and convenient operation and management. Since its appearance, it has been favored by more and more researchers. At present, it has been widely used in sewage treatment systems in various industries.

As the place where microorganisms live, the biofilm carrier is the core part of the biological contact oxidation method, and its performance directly determines the treatment effect and investment benefit of the process. Usually, the density of the suspended carrier used in the biological contact oxidation method is close to that of water. When used, it is directly placed in the biological contact oxidation tank. Microbes grow on the surface of the carrier to form a complex biofilm. The carrier is fixed or suspended in water during aeration. , so that the three phases of membrane, liquid and gas are in full contact, so that the pollutants can be quickly degraded.

The shape of the biofilm carrier of the biological contact oxidation method is generally ring-shaped or three-dimensional spherical, etc., with regular shape, large porosity, and specific surface area ranging from several hundred to several thousand. The carrier is mostly made of polyolefins (such as polyethylene, polypropylene) and its modified materials, polyvinyl chloride and its modified materials, polyurethane foam and other plastics. At present, biological carriers mainly include fixed carriers, suspended carriers (soft, semi-soft, combined carriers), suspension carriers and new biological carriers. However, in practical applications, these carriers have insufficient film-hanging speed, film-hanging amount, and tightness between the film and the carrier.

Utility model content

The purpose of the utility model is to provide a biofilm carrier, which has a larger specific surface area and good film-hanging performance.

In order to achieve the above object, the utility model provides a biofilm carrier, wherein, the biofilm carrier includes a regular quadrangular prism with a height of H and a side length of the bottom surface of a, and inside the regular prism are a plurality of The two side edges of each partition board are respectively connected with two opposite opposite sides.

Preferably, the first partitions along the length direction and the second partitions along the width direction are respectively arranged at equal intervals.

Preferably, the number of the first partition board is equal to that of the second partition board.

Preferably, the surface of the regular quadrangular prism and/or the partition plate is smooth or has protrusions.

Preferably, the thickness of the regular quadrangular prism surface and the partition plate is 0.05mm-3mm, and the ratio H/a of the height of the regular quadrangular prism surface to the side length of the bottom surface is 0.2-1.5.

Preferably, there are 1-10 said first partition boards and said second partition boards.

Preferably, the biofilm carrier has a specific gravity of 0.90-0.99.

Through the above technical solution, the biofilm carrier of the present invention includes a regular quadrangular prism surface and a partition plate arranged inside the cylinder surface and dividing the interior of the cylinder surface into a plurality of spaces at intervals. Through the above structure, the biofilm carrier has ideal porosity, ventilation performance and water passing performance, and the specific surface area of the biofilm carrier is increased, the microbial load per unit volume of the carrier is increased, and the bioreaction tank is improved. volume load.

Other features and advantages of the present utility model will be described in detail in the following specific embodiments.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, together with the following specific embodiments, are used to explain the utility model, but do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is the side view of biofilm carrier of the present utility model;

Fig. 2 is a top view of the biofilm carrier of the present invention.

Explanation of reference signs

1 Regular quadrangular prism surface 21 The first partition

22 second divider

Detailed ways

The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.

In the present invention, unless otherwise stated, the used orientation words such as "up, down, left, right" usually indicate the directions shown in the accompanying drawings.

The utility model provides a biofilm carrier, wherein the biofilm carrier includes a regular quadrangular prism surface 1 with a height of H and a side length of the bottom surface 1, and a plurality of waves along the length direction and the width direction are arranged inside the regular prism surface 1 shaped partition boards, the two sides of each partition board are respectively connected with two opposite opposite sides.

The interior of the regular quadrangular column surface 1 of the biofilm carrier of the present utility model is divided into a plurality of mutually spaced spaces by a wavy partition plate, which is respectively along the length direction and the width direction, and the two sides of the partition plate The sides are respectively connected to two opposite sides, that is to say, the length of the dividing plate is equal to the side length of the square. Due to the presence of multiple such separated spaces inside the carrier, the biofilm carrier has a good porosity, which is conducive to the passage of gas and water.

It should be noted that the partition plate is wavy, which not only increases the specific surface area of the biofilm carrier, but also increases the load of microorganisms, which is conducive to improving the rate of biochemical reactions.

In addition, the four edges of the regular quadrangular prism surface 1 can be rounded, as shown in Fig. 1 and Fig. 2, which avoids the sharp corners of the biofilm carrier and is beneficial to buffer the impact of the fluid.

Through the above technical solution, the biofilm carrier of the present invention includes a regular quadrangular prism surface and a partition plate arranged inside the cylinder surface and dividing the interior of the cylinder surface into a plurality of spaces at intervals. Through the above structure, the biofilm carrier has ideal porosity, ventilation performance and water passing performance, and the specific surface area of the biofilm carrier is increased, the microbial load per unit volume of the carrier is increased, and the bioreaction tank is improved. volume load.

Preferably, the first partition boards 21 along the length direction and the second partition boards 22 along the width direction are respectively arranged at equal intervals.

Because in the utility model, the length direction and the width direction of the regular quadrangular prism surface 1 are respectively provided with partition plates, therefore preferably, the first partition plate 21 along the length direction and the second partition plate 22 along the width direction are respectively Set at equal intervals. In this way, the plurality of spaces formed inside the regular rectangular prism surface 1 are all equal, so that the fluid passing through the biofilm carrier is more uniform, which is beneficial to the growth of the biofilm and the rate of biochemical reactions.

Preferably, the number of the first partition board 21 and the number of the second partition board 22 are equal.

By arranging an equal number of first partitions 21 and second partitions 22 in the regular quadrangular prism surface 1 of the biofilm carrier, the regular quadrangular prism surface 1 is divided into a plurality of regular quadrangular column spaces.

Preferably, the surface of the regular quadrilateral cylinder 1 and/or the partition plate is smooth or has protrusions.

In the present invention, the surface of the regular quadrilateral cylinder 1 and/or the partition plate may be smooth or have protrusions. Moreover, the protrusions can also take various forms, such as saw-tooth-shaped protrusions, arc-shaped protrusions, or corrugated protrusions. In addition, the regular quadrilateral column 1 and the partition plate may have different surface features. In a preferred embodiment as shown in FIG. 2 , both the regular quadrilateral column 1 and the partition plate have protruding surfaces.

Such a surface form can appropriately increase the specific surface area of the biofilm carrier as required. Moreover, the impact force of the water flow can also play a good buffering role, so that the biofilm on the surface of the biofilm carrier is not easy to be lost.

Preferably, the thickness of the quadrangular column 1 and the partition plate is 0.05mm-3mm, and the ratio H/a of the height of the quadrangular column 1 to the side length of the bottom surface is 0.2-1.5. Preferably, there are 1-10 said first partition boards (21) and said second partition boards (22).

The size and structural parameters of the preferred embodiments of the biofilm carrier of the present invention are exemplified above. Preferably, the manufacturing size of the biofilm carrier is selected within the above range to obtain a better sewage treatment effect. But the utility model is not limited thereto, and can be manufactured according to actual needs.

Preferably, the biofilm carrier has a specific gravity of 0.90-0.99. Since the biofilm carrier of the present invention usually needs to be suspended in water, a material with a specific gravity slightly smaller than water is selected for manufacture, so that the biofilm carrier can be better suspended in sewage. Generally, organic polymer materials are selected for the biofilm carrier of the present invention, and materials such as polyethylene or polypropylene are generally used.

The preferred embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the specific details of the above-mentioned embodiment, and within the scope of the technical concept of the utility model, the technical solution of the utility model can be carried out in many ways. These simple modifications all belong to the protection scope of the present utility model.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way if there is no contradiction. The combination method will not be explained separately.

In addition, any combination of various implementations of the present invention can also be made, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims (7)

1. biofilm carrier; It is characterized in that; This biofilm carrier comprises being the four-prism face (1) of a for H, the bottom surface length of side highly; The a plurality of difference of this four-prism face (1) set inside along its length with the corrugated division plate of width, two sides of each said division plate are connected with two relative opposite side respectively.

2. biofilm carrier according to claim 1 is characterized in that, second division plate (22) of said first division plate (21) and broad ways along its length is provided with respectively equally spacedly.

3. biofilm carrier according to claim 2 is characterized in that, said first division plate (21) equates with the quantity of said second division plate (22).

4. biofilm carrier according to claim 1 is characterized in that, the surface of said four-prism face (1) and/or said division plate is smooth or has projection.

5. biofilm carrier according to claim 1 and 2 is characterized in that, the thickness of said four-prism face (1) and said division plate is 0.05mm-3mm, and the height of said four-prism face (1) and bottom surface length of side ratio H/a are 0.2-1.5.

6. biofilm carrier according to claim 3 is characterized in that, said first division plate (21) and said second division plate (22) are 1-10.

7. biofilm carrier according to claim 1 is characterized in that, the proportion of said biofilm carrier is 0.90-0.99.

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