Curtain type periphyton biofilm culturing device for improving nitrogen and phosphorus retention capacity of small and micro water body

Abstract

The utility model relates to the technical field of water environment ecological restoration, in particular to a curtain type periphyton biofilm culturing device for improving nitrogen and phosphorus retention capacity of a small and micro water body, which comprises four support columns respectively arranged at two ends of two PVC (polyvinyl chloride) plastic steel rods, and a biofilm culturing component used for creating periphyton attachment conditions is arranged between the two PVC plastic steel rods. The film hanging assembly comprises a plurality of thin plastic steel rods which are arranged between the two PVC plastic steel rods at equal intervals, a plurality of nylon ropes which are distributed at equal intervals are further arranged on the two PVC plastic steel rods, and a plurality of suspension balls which are distributed at equal intervals penetrate through the nylon ropes. Compared with natural carriers in small rivers, river channels, lakes, reservoirs and ponds, the elastic biological filler is more beneficial to attachment of periphyton and increase of biomass, the contact probability of nutrient salts such as nitrogen and phosphorus in water and periphyton biological membranes is increased, the interaction between the nutrient salts and active sites of the biological membranes is enhanced, and the biomembrane activity is improved. The nutritive salt retention process is influenced, so that the nitrogen and phosphorus retention capacity of the surface water body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water environment ecological restoration technical field, concretely relates to a curtain type periphyton biofilm device for improving nitrogen and phosphorus retention capacity of small and micro water bodies. BACKGROUND

[0002] Periphyton biofilm refers to complex microbial community attached to the substrate of shallow water system. Periphyton plays an important role in the nitrogen and phosphorus cycle and transformation process of freshwater ecological system. However, due to the lack of suitable substrate carriers for attachment and periphyton biomass per unit area of substrate in natural environment, the assimilation and absorption of water body nitrogen and phosphorus by periphyton biofilm are limited, which affects water quality purification and nitrogen and phosphorus retention effect. CONTENT OF THE UTILITY MODEL

[0003] In order to overcome the shortage of prior art, the utility model provides a curtain type periphyton biofilm device for improving nitrogen and phosphorus retention capacity of small and micro water bodies, which solves the problem that the nitrogen and phosphorus nutrient purification and removal of small and micro water bodies such as small rivers, shallow lakes and ponds are restricted by the lack of periphyton biofilm biomass under natural conditions.

[0004] To solve the above technical problems, the utility model provides the following technical scheme:

[0005] A curtain type periphyton biofilm device for improving nitrogen and phosphorus retention capacity of small and micro water bodies, comprising four support columns arranged at the two ends of two PVC plastic steel poles respectively, a biofilm hanging assembly for creating conditions conducive to periphyton colonization being arranged between the two PVC plastic steel poles, the biofilm hanging assembly comprising a plurality of fine plastic steel poles arranged at equal intervals between the two PVC plastic steel poles, a plurality of nylon ropes being arranged at equal intervals on the two PVC plastic steel poles, a plurality of suspension balls being arranged at equal intervals on the nylon ropes, elastic biological fillers being arranged in the suspension balls, and a knot being arranged between two adjacent suspension balls for limiting.

[0006] Further, a plurality of vertical through holes are arranged at equal intervals on the four support columns, and the ends of the nylon ropes located at the two side edges are extended to the through holes on the two support columns and tied and connected.

[0007] The support column is a cylindrical pole with a conical lower end, and the length of the support column is 60-80 cm, the diameter of the cross section is 6-8 cm, and the diameter of the through hole is 1.5-2 cm.

[0008] Further, a plurality of opening holes one are arranged at equal intervals on the two PVC plastic steel poles, the nylon ropes located at the two side edges are tied and connected to the two ends of the two PVC plastic steel poles, and the ends of the remaining nylon ropes are respectively threaded through the corresponding opening holes one on the two PVC plastic steel poles, so that the nylon ropes are fixed on the PVC plastic steel poles, and a screw plug can be detachably arranged on the inner side of the opening hole one.

[0009] The cross-sectional diameter of the opening one is 1.0-1.5cm, the length of the PVC plastic steel rod is 100-120cm, and the cross-sectional size is 5cm*4cm.

[0010] Further, a plurality of fine plastic steel rods are provided with a plurality of equidistantly arranged openings two, and the nylon ropes located at the two side edges are respectively tied and connected to the two ends of the two fine plastic steel rods, and the other ends of the remaining nylon ropes are respectively penetrated through the corresponding openings two on the fine plastic steel rods.

[0011] The cross-sectional diameter of the opening two is 0.5-1.0cm, the length of the fine plastic steel rod is 90-100cm, and the cross-sectional size is 3cm*2cm.

[0012] Further, the rope thickness of the nylon rope is 0.5-0.8cm, and the effective length is 1.5-2m.

[0013] Further, the diameter of the suspension ball is 5-8cm, and the suspension ball and the built-in elastic biological filler material are both polypropylene.

[0014] By the above technical scheme, the curtain type periphyton biofilm device for improving the nitrogen and phosphorus retention capacity of small and micro water bodies is provided, and compared with the prior art, at least the following beneficial effects are achieved:

[0015] 1、The elastic biological filler of the suspension ball used in the device has a large surface area, which can provide good attachment sites for periphyton, bacteria, fungi, protozoa, metazoan and the like in water. Compared with the natural carriers in small rivers, river channels, lakes, ponds and the like, the elastic biological filler of the device is more conducive to the attachment of periphyton and the increase of biomass, improves the contact probability of nutrients such as nitrogen and phosphorus in water with periphyton biofilm, and enhances the interaction between nutrients and active sites of the biofilm, affects the nutrient retention process, and further improves the nitrogen and phosphorus retention capacity of surface water bodies.

[0016] 2、The porous site design of the support can adjust the laying height and angle of the device in water according to the water depth, increase the absorption and degradation of nitrogen and phosphorus pollutants in small and micro water bodies. The device is simple and reliable as a whole, can be used in cooperation with the supporting column, can be stably arranged in water, does not need additional devices, is simple to manufacture, low in use cost, easy to roll up and store, easy to hang biofilm and easy to clean, harmless to the environment. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the present application, constitute a part of the present application, and the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is the whole structure schematic view of the utility model;

[0019] Figure 2 It is the overhead sectional view of the utility model;

[0020] Figure 3 It is the structure schematic view of PVC plastic steel pole of the utility model;

[0021] Figure 4 It is the suspended ball elastic biological filler schematic view of the utility model.

[0022] In the drawing: 1, PVC plastic steel pole; 2, support column;

[0023] 3, film-hanging assembly; 31, thin plastic steel pole; 32, nylon rope; 33, suspended ball; 34, through hole; 35, opening one; 36, screw plug; 37, opening two. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] In order to regulate the growth environment of periphyton, some complex devices are currently designed to cultivate periphyton meeting specific requirements. Although such complexity is beneficial for controlling growth conditions, in most cases, our goal is to cultivate and proliferate periphyton under conditions that simulate natural environment as much as possible, at which time, the excessively artificial environment setting is not quite appropriate. At the same time, such complexity also significantly increases the cost and structural complexity of the equipment. Most of such devices are only suitable for laboratory environment and highly artificial controlled sewage treatment process, so the cultivated periphyton is difficult to represent the growth conditions in natural environment.

[0026] In order to increase the attachment and biomass of periphyton, improve the contact probability of nitrogen and phosphorus and other nutrients in water body with periphyton film, and enhance the interaction between nutrients and active sites of biological film, as shown in Figures 1-4 A curtain type periphyton film-hanging device for improving nitrogen and phosphorus retention capacity of small and micro water bodies is provided, which includes four support columns 2 arranged at two ends of two PVC plastic steel poles 1 respectively.

[0027] In order to create a habitat for the surrounding flora and fauna to grow, and to enhance the water flow turbulence, and to improve the water body dissolved oxygen level, the two PVC plastic steel poles 1 are provided with a biofilm forming assembly 3 for creating a habitat for the surrounding flora and fauna to grow, the biofilm forming assembly 3 comprises two equidistantly arranged thin plastic steel poles 31 arranged between the two PVC plastic steel poles 1, and a plurality of nylon ropes 32 are arranged equidistantly on the two PVC plastic steel poles 1.

[0028] The rope diameter of the nylon rope 32 is 0.5 cm, and the effective length is 1.5 m, a plurality of equidistantly distributed suspension balls 33 are arranged through the nylon rope 32, and the suspension ball 33 is provided with elastic biological filler, the suspension ball 33 is worn on the nylon rope 32, and a knot is arranged between two adjacent suspension balls 33 for limiting the sliding of the suspension ball 33, the diameter of the suspension ball 33 is 5 cm, and the material of the suspension ball 33 and the built-in elastic biological filler can be any one of polypropylene, polyolefin and polyamide, so that the suspension ball 33 and the elastic biological filler are corrosion resistant, temperature resistant and aging resistant, and the gas, water and biological membrane are fully mixed and contacted, the microbial biofilm is formed quickly, and the aging biological membrane is easy to fall off.

[0029] Three vertical equidistant through holes 34 are arranged on the four supporting columns 2, and the two ends of the nylon rope 32 located at the two side edges are respectively extended to be tied and connected with the through holes 34 on the two supporting columns 2, the position of the through holes 34 on the supporting column 2 to which the nylon rope 32 is tied can be adjusted according to the water depth, the supporting column 2 is a cylindrical pole with a conical lower end, the length of the supporting column 2 is 60 cm, the cross-sectional diameter is 6 cm, and the diameter of the through hole 34 is 1.5 cm, the device is fixed on the river and lake bed by the supporting column 2, and the whole device is positioned.

[0030] Nine equidistantly arranged opening holes one 35 are arranged on the two PVC plastic steel poles 1 respectively, the nylon ropes 32 located at the two side edges are tied and connected with the two ends of the two PVC plastic steel poles 1 respectively, and the two ends of the remaining nylon ropes 32 are respectively penetrated through the corresponding opening holes one 35 on the two PVC plastic steel poles 1, so that the nylon ropes 32 are fixed on the PVC plastic steel poles 1, and a screw plug 36 can be detachably arranged on the inner side of the opening hole one 35, when the nylon rope 32 is broken, it can be replaced in time, the cross-sectional diameter of the opening hole one 35 is 1.0 cm, the length of the PVC plastic steel pole 1 is 100 cm, and the cross-sectional size is 5 cm x 4 cm.

[0031] Nine equidistantly arranged opening holes two 37 are arranged on the two thin plastic steel poles 31 respectively, and the nylon ropes 32 located at the two side edges are tied and connected with the two ends of the two thin plastic steel poles 31 respectively, and the two ends of the remaining nylon ropes 32 are respectively penetrated through the corresponding opening holes two 37 on the thin plastic steel poles 31, the cross-sectional diameter of the opening hole two 37 is 0.5 cm, the length of the thin plastic steel pole 31 is 90 cm, and the cross-sectional size is 3 cm x 2 cm.

[0032] The distance between the thin plastic steel rod 31 and the PVC plastic steel rod 1 is 50 cm, and the distance between the two thin plastic steel rods 31 is also 50 cm, which can prevent the nylon rope 32 from crossing and knotting.

[0033] The utility model can be fixed by being thrown at certain intervals, for example, 5-10 m, along small rivers, river channels, lakes, ponds, etc., each device is arranged in an illumination area, which is conducive to the renewal of periphyton and the production of oxygen by periphyton photosynthesis.

[0034] In the actual use process of the curtain type periphyton hanging device, for general small rivers, the depth of the water body needs to be measured, and according to the water depth and the suspended matter in the water, the position of the device on the support column 2 is adjusted, and the support column 2 is inserted into the riverbed bottom through the sharp cone below to fix the device. When the water flows, the water flow direction is roughly parallel to the device at this time, the suspended ball 33 elastic biological filler can enhance the water body oxygen dissolving capacity through disturbance and hydraulic shear effect, in this process, the periphyton in the water begins to adhere to the biological filler, due to the large surface area of the biological filler, the adhesion amount of the periphyton is large, thereby improving the nitrogen and phosphorus retention capacity of the small river.

[0035] It should be noted that in this text, the term "includes" "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment.

[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A curtain type of periphyton biofilm device for improving the nitrogen and phosphorus retention capacity of small and micro water bodies, comprising four support columns (2) arranged at the two ends of two PVC plastic steel poles (1) respectively, characterized in that: The PVC plastic steel poles (1) are provided with a biofilm forming assembly (3) between two of them for creating conditions conducive to the growth of periphyton; The biofilm forming assembly (3) comprises a plurality of fine plastic steel poles (31) arranged at equal intervals between the two PVC plastic steel poles (1), and a plurality of nylon ropes (32) arranged at equal intervals on the two PVC plastic steel poles (1), wherein a plurality of suspension balls (33) are arranged at equal intervals on the nylon ropes (32), the suspension balls (33) are filled with elastic biological fillers, and a knot is arranged between two adjacent suspension balls (33) for limiting.

2. The curtain type biofilm device for enhancing the nitrogen and phosphorus retention capacity of small and micro water bodies according to claim 1, characterized in that: A plurality of through holes (34) are arranged on the four support columns (2) at equal vertical intervals, and the two ends of the nylon ropes (32) located at the two side edges are extended to be tied and connected with the through holes (34) on the two support columns (2). The support column (2) is a cylindrical rod with a conical lower end, and the length of the support column (2) is 60-80 cm, the cross-sectional diameter is 6-8 cm, and the diameter of the through hole (34) is 1.5-2 cm.

3. The curtain type biofilm device for enhancing the nitrogen and phosphorus retention capacity of small and micro water bodies according to claim 1, characterized in that: A plurality of first openings (35) are arranged at equal intervals on the two PVC plastic steel poles (1), the two ends of the nylon ropes (32) located at the two side edges are tied and connected with the two ends of the two PVC plastic steel poles (1), and the two ends of the remaining nylon ropes (32) are respectively threaded through the corresponding first openings (35) on the two PVC plastic steel poles (1) to fix the nylon ropes (32) on the PVC plastic steel poles (1), and a screw plug (36) is detachably arranged on the inner side of the first opening (35). The cross-sectional diameter of the first opening (35) is 1.0-1.5 cm, the length of the PVC plastic steel pole (1) is 100-120 cm, and the cross-sectional size is 5 cm x 4 cm.

4. The curtain type biofilm device for enhancing the nitrogen and phosphorus retention capacity of small and micro water bodies according to claim 1, characterized in that: A plurality of second openings (37) are arranged at equal intervals on the plurality of fine plastic steel poles (31), and the two ends of the nylon ropes (32) located at the two side edges are tied and connected with the two ends of the two fine plastic steel poles (31), and the two ends of the remaining nylon ropes (32) are respectively threaded through the corresponding second openings (37) on the fine plastic steel poles (31). The cross-sectional diameter of the second opening (37) is 0.5-1.0 cm, the length of the fine plastic steel pole (31) is 90-100 cm, and the cross-sectional size is 3 cm x 2 cm.

5. The curtain type biofilm device for enhancing the nitrogen and phosphorus retention capacity of small and micro water bodies according to claim 1, characterized in that: The diameter of the suspension ball (33) is 5-8 cm, and the material of the suspension ball (33) and the elastic biological filler filled therein is polypropylene.

6. The curtain type biofilm device for enhancing the nitrogen and phosphorus retention capacity of small and micro water bodies according to claim 1, characterized in that: ​

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