Adjustable biofilm culturing device for improving nitrogen and phosphorus retention potential of small and micro water body

Abstract

The utility model relates to the technical field of water ecological restoration, and provides an adjustable biofilm culturing device for improving nitrogen and phosphorus retention potential of a small and micro water body. The suspended ball filler on the biological filler filter frame and the MBBR filler in the suspended ball filler can provide good attachment conditions and habitat for periphytic algae, bacteria, fungi, invertebrates and the like, a periphytic biocenosis structure with rich biodiversity is constructed, and the biofilm biomass of the periphytic algae, bacteria, fungi, invertebrates and the like is improved by improving the biofilm biomass of the periphytic algae, bacteria, fungi, invertebrates and the like. The nitrogen and phosphorus retention capacity of the small and micro water body is improved; the height of the device in water can be adjusted according to the depth of a water body through the design of multiple embedded baffles of the fixed plate; according to the utility model, each group of suspended ball fillers can be freely detached, so that damaged suspended balls can be replaced or aged biological membranes can be updated; the material used by the utility model has the advantages of simplicity in manufacturing, low operation cost, large surface area, easiness in biofilm formation, easiness in cleaning, no harm to the environment and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to water ecological restoration technical field, specifically, relate to a kind of adjustable type biofilm device for improving small and micro water body nitrogen and phosphorus retention potential. BACKGROUND

[0002] At present, the enrichment of nitrogen and phosphorus in surface water caused by rural domestic sewage discharge and agricultural non-point source pollution aggravates the pollution of river and lake water and the pressure on aquatic ecosystem. Small and micro water bodies mainly include streams, ditches, ponds, small lakes, etc., which are important places and channels for the collection, transformation and transmission of non-point source pollutants. By improving the nitrogen and phosphorus retention capacity of small and micro water bodies, the water quality of downstream water bodies can be effectively improved, and the pressure of water quality deterioration and aquatic ecosystem degradation can be relieved. At present, ecological ditches and ponds are commonly used for nitrogen and phosphorus pollution interception technology. They mainly use the physical action of the internal structure of the ditch and the biological action of aquatic / wetland plants to intercept and purify nitrogen and phosphorus pollutants, and lack attention to the environmental and ecological functions of nitrogen and phosphorus retention of surrounding organisms.

[0003] Periphyton (also known as natural biofilm) is an active aggregate of microorganisms and non-biological substances formed naturally at the soil-water interface, mainly including algae, bacteria and extracellular polymeric substances, etc. It is widely distributed on stones, gravel and emergent plant surfaces in shallow water ecosystems, and has been proven to have good nitrogen and phosphorus retention capacity and is essential for water quality purification. The nitrogen and phosphorus retention function of periphyton in small and micro water bodies plays an important role in improving the nitrogen and phosphorus load interception capacity of ecological ditches and ponds. However, the biomass of periphyton attached to stones, gravel and plant surfaces in shallow water ecosystems under natural conditions is limited, which seriously affects the retention effect of periphyton on water body nitrogen and phosphorus nutrients and restricts the play of its water quality purification function. Therefore, it is necessary to improve the biomass of periphyton in small and micro water bodies and propose an adjustable type biofilm device for improving the nitrogen and phosphorus retention potential of small and micro water bodies. SUMMARY

[0004] To overcome the shortcomings of the prior art, the utility model provides an adjustable type biofilm device for improving the nitrogen and phosphorus retention potential of small and micro water bodies, which has the advantages of improving the biomass of periphyton and increasing the area of periphyton attachment, solving the problem of insufficient periphyton biomass per unit area of natural carriers and reducing the retention effect of periphyton on water body nitrogen and phosphorus nutrients.

[0005] The utility model discloses a technical scheme as follows: An adjustable type biofilm device for improving the nitrogen and phosphorus retention potential of small and micro water bodies, comprising a biological filler filter frame and a fixing plate arranged at the bottom of the biological filler filter frame, two support frames are symmetrically arranged at the two sides of the biological filler filter frame, eight groups of suspended ball fillers are arranged in the biological filler filter frame, and a screw plug opening hole is formed at the top of the biological filler filter frame to freely detach the eight groups of suspended ball fillers.

[0006] Further, an adjusting assembly is arranged at the top of the fixing plate to adjust the angle of the support frame and is fixed, the adjusting assembly comprises three fixing nails, a rotating shaft and four embedded baffles which are sequentially arranged from left to right at the top of the fixing plate.

[0007] Preferably, the length of the biological filler filter frame is 80 cm, and the height is 55 cm, and the length of the support frame is 40 cm.

[0008] Preferably, the length of the fixing plate is 70 cm, the width is 10 cm, and the thickness is 5 cm, the length of the embedded baffle is 10 cm, the width is 6 cm, and the thickness is 2 cm, wherein an embedded groove with a depth of 2 cm is formed at the front side of the embedded baffle.

[0009] Preferably, the diameter of the suspended ball filler is 5 cm, and the material of the suspended ball filler comprises but is not limited to polypropylene plastic material, and the suspended ball filler is additionally provided with MBBR filler inside.

[0010] Preferably, the skeleton material of the biological filler filter frame, the fixing plate and the support frame comprises but is not limited to thermosetting plastic material.

[0011] Preferably, the diameter of the screw plug opening hole is 1.5 cm, a screw plug is arranged inside the screw plug opening hole, and the material of the screw plug comprises but is not limited to polyethylene plastic material.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The suspended ball fillers on the biological filler filter frame of the utility model can create a good habitat for periphytic algae, bacteria, fungi and invertebrates, which is conducive to the formation of periphytic biological communities, promotes biological diversity, improves the biomass of periphytic organisms, and improves the nitrogen and phosphorus retention capacity of small and micro water bodies through the metabolism.

[0014] 2. The utility model can adjust the height of the device in water according to the depth of the water body through the design of multiple embedded baffles of the fixing plate.

[0015] 3. The utility model freely detaches each group of suspended ball fillers to replace damaged suspended balls and MBBR fillers or update aged biological membranes.

[0016] 4、The material used in the utility model has the advantages of simple production, low operation cost, large surface area, easy biofilm formation, easy cleaning and no harm to the environment. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described in detail below in combination with the drawings and specific embodiments.

[0018] Fig. 1 It is a side view of the utility model;

[0019] Fig. 2 It is a schematic view of the plane structure of the biological filler filter frame in the front view direction of the utility model;

[0020] Fig. 3 It is a schematic view of the plane structure of the fixed plate in the front view direction of the utility model;

[0021] Fig. 4 It is a schematic view of the structure of the suspended ball filler of the utility model.

[0022] Reference signs:

[0023] 1, biological filler filter frame; 2, fixed plate; 2-1, fixed nail; 2-2, rotating shaft; 2-3, embedded baffle; 3, support frame; 4, suspended ball filler; 5, screw plug hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the utility model.

[0025] Embodiment 1

[0026] Periphyton, i.e. natural biofilm, has been proved to have good nitrogen and phosphorus retention capacity and is widely distributed in shallow water ecological systems on the surfaces of stones, gravels and emergent plants, which is very important for water purification. However, the periphyton biomass per unit area of the natural carrier is often not very sufficient, which greatly reduces the retention effect of periphyton on water body nutrients such as nitrogen and phosphorus, and cannot fully play its important role in water purification. Figs. 1-4 The embodiment provides an adjustable biofilm hanging device for improving the nitrogen and phosphorus retention potential of small and micro water bodies, which comprises a biological filler filter frame 1 and a fixed plate 2 arranged at the bottom of the biological filler filter frame 1.

[0027] Refer to Figs. 1-4, the periphyton biomass per unit area of the natural carrier is often not very sufficient, which greatly reduces the retention effect of the periphyton on the nutrients such as nitrogen and phosphorus in the water body, and cannot fully play its important role in water quality purification. In order to design a low-energy biological treatment device with small volume and easy to move, the following settings are made. Two support frames 3 are symmetrically arranged on both sides of the biological filler filter frame 1. The angle of the support frame 3 can be manually adjusted according to the water level. The length of the biological filler filter frame 1 and the support frame 3 is 80 cm and 40 cm respectively. The cross-sectional size of the biological filler filter frame 1 is 5 cm x 5 cm. The height of the main filter frame is 50 cm, and the height of the bottom support part is 5 cm. The skeleton material of the biological filler filter frame 1, the fixed plate 2 and the support frame 3 includes but is not limited to thermosetting plastic material. Eight groups of suspended ball fillers 4 are arranged in the biological filler filter frame 1. The diameter of the suspended ball filler 4 is 5 cm. The material of the suspended ball filler 4 includes but is not limited to polypropylene plastic material. A screw plug opening 5 is opened at the top of the biological filler filter frame 1 to freely detach the eight groups of suspended ball fillers 4. The diameter of the screw plug opening 5 is 1.5 cm. A screw plug is arranged in the screw plug opening 5. The material of the screw plug includes but is not limited to polyethylene plastic material. When the water flow flows, the suspended ball filler 4 will rotate freely. Since the surface of the suspended ball filler 4 is designed to be hollow, it will shear the water flow and form a small vortex, promoting water aeration and aeration. In this process, the periphyton in the water also gradually grows on the surface of the suspended ball filler 4. Since the suspended ball filler 4 has a large surface area, the periphyton biomass attached is large, and the periphyton membrane formed absorbs the pollutants such as nitrogen and phosphorus in the water, and realizes the retention of nitrogen and phosphorus nutrients through the metabolism. In addition, the adsorption of the periphyton membrane also promotes the interception and purification of nitrogen and phosphorus nutrients in the water. In this process, the periphyton continuously reproduces, the biomass continuously increases and updates, forming a continuous absorption, adsorption and oxidation decomposition of nitrogen and phosphorus retention process, thereby effectively reducing the transmission of pollution load such as nitrogen and phosphorus to the downstream water body, and achieving the purpose of improving the nitrogen and phosphorus retention capacity of the surface water body such as stream, ditch, pond, small lake and the like.

[0028] Referring to Figs. 1-3An adjusting assembly is arranged on the top of the fixed plate 2 to adjust the angle of the support frame 3 and is fixed, the adjusting assembly comprises three fixing nails 2-1, a rotating shaft 2-2 and four embedded baffles 2-3 arranged on the top of the fixed plate 2 from left to right, the length of the fixed plate 2 is 70 cm, the width is 10 cm and the thickness is 5 cm, the length of the embedded baffle 2-3 is 10 cm, the width is 6 cm and the thickness is 2 cm, and the embedded baffle 2-3 is provided with an embedded groove with a cross section of 9 cm*4 cm and a depth of 2 cm in front.

[0029] According to the above embodiment, the device provides abundant attachment carriers for periphyton, improves the biomass of periphyton membrane in rivers and ditches, thereby enhancing the absorption and conversion capacity of nitrogen and phosphorus and improving the water purification effect, the suspended ball filler 4 under the water flow enhances the water disturbance capacity and improves the water aeration and oxygen dissolution level, thereby improving the environmental ecological function of nitrogen and phosphorus retention in river, pond and ditch water systems.

[0030] Embodiment 2

[0031] Based on the embodiment 1, referring to Figs. 2-4 , for small and micro water bodies with less suspended matter, the diameter size of the suspended ball is 5 cm as the filler of the biological filler filter frame 1, the periphyton membrane is selected as the main ecological environmental management material, the biomass and the biological membrane area of the periphyton in the small and micro water bodies are increased, and the environmental ecological function of nitrogen and phosphorus nutrient salt retention in the small and micro water bodies is enhanced, and for small and micro water bodies with more suspended matter, the diameter size of the suspended ball filler 4 can be changed to 4 cm or 3 cm, the spacing between the suspended ball fillers 4 is increased, and the small impurities can pass through the filter frame freely.

[0032] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An adjustable biofilm device for improving the nitrogen and phosphorus retention potential of small and micro water bodies, comprising a biological filler filter frame (1) and a fixing plate (2) arranged at the bottom of the biological filler filter frame (1), characterized in that, Two support frames (3) are symmetrically arranged on both sides of the biological filler filter frame (1), eight groups of suspended ball fillers (4) are arranged inside the biological filler filter frame (1), and a screw plug opening (5) is arranged at the top of the biological filler filter frame (1) to freely disassemble the eight groups of suspended ball fillers (4); And an adjusting assembly arranged on the top of the fixed plate (2) to adjust the angle of the support frame (3) and fixed, the adjusting assembly comprises three fixed nails (2-1), a rotating shaft (2-2) and four embedded baffles (2-3) arranged in sequence from left to right on the top of the fixed plate (2).

2. The adjustable biofilm device for enhancing the nitrogen and phosphorus retention potential of small and micro water bodies according to claim 1, characterized in that, The length of the biological filler filter frame (1) is 80cm, and the height is 55cm.

3. The adjustable biofilm device for enhancing nitrogen and phosphorus retention potential in small and micro water bodies according to claim 1, wherein, The length of the fixed plate (2) is 70cm, the width is 10cm, and the thickness is 5cm, the length of the embedded baffle (2-3) is 10cm, the width is 6cm, and the thickness is 2cm, wherein the front side of the embedded baffle (2-3) is provided with an embedded groove with a depth of 2cm.

4. The adjustable biofilm device for enhancing nitrogen and phosphorus retention potential in small and micro water bodies according to claim 1, wherein, The diameter of the suspended ball filler (4) is 5cm, the material of the suspended ball filler (4) includes but is not limited to polypropylene plastic material, and the suspended ball filler (4) is internally provided with MBBR filler.

5. The adjustable biofilm device for enhancing nitrogen and phosphorus retention potential in small and micro water bodies according to claim 1, wherein, The skeleton materials of the biological filler filter frame (1), the fixed plate (2) and the support frame (3) include but are not limited to thermosetting plastic material.

6. The adjustable biofilm device for enhancing nitrogen and phosphorus retention potential in small and micro water bodies according to claim 1, wherein, The diameter of the screw plug opening (5) is 1.5cm, the screw plug opening (5) is internally filled with a screw plug, and the material of the screw plug includes but is not limited to polyethylene plastic material.

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