Farmland discharge port pollutant treatment device

Abstract

The utility model discloses a farmland discharge port pollutant treatment device which is provided with a two-stage purification system and comprises a wall-mounted pollution discharge pretreatment system and an external enclosure system, the meshes in the wall-mounted sewage disposal pretreatment system can filter silt substances, the biological filter material at the bottom can adsorb nitrogen and phosphorus substances, and solidified microorganisms in the porous suspension balls can release microorganisms to purify water; the external enclosure system can further purify farmland drainage, including the absorption effect of aquatic plants and the purification effect of solidified microorganisms and microorganisms growing on the roots of the aquatic plants; farmland recession water is effectively prevented from directly entering a river channel water body through a farmland drainage port, and the influence of farmland drainage on river channel water quality is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to farmland sewage treatment technical field especially is farmland outlet pollutant treatment device. BACKGROUND

[0002] The agricultural non-point source pollution refers to the water environment pollution caused by the nitrogen, phosphorus and organic matter in the agricultural production activities, which are gathered into the surface water through the farmland surface runoff or leakage. The relevant researches at home and abroad generally believe that the pollution contribution of the agricultural non-point source accounts for more than 60% of the nitrogen and phosphorus load of the basin, and some domestic investigation and researches even believe that the pollution load of the agricultural non-point source may be as high as 70%. The farmland runoff is an important factor causing the non-point source pollution, especially during the spring wheat irrigation and summer rice planting period, a large amount of farmland runoff is discharged into the river, which leads to the water quality exceeding the standard and seriously affects the ecological balance of the water body and human health.

[0003] The farmland runoff mainly contains suspended silt, nitrogen, phosphorus nutrient elements and organic pollutants. The suspended silt can reduce the transparency of water, increase the turbidity of water and affect the photosynthesis of plants in water. The nitrogen and phosphorus nutrient elements can cause the large production of algae, lead to the water eutrophication phenomenon, affect the normal growth of fish and destroy the ecological balance of the surface water environment.

[0004] In view of the pollution risk that the farmland runoff directly enters the river, at present, there are various agricultural non-point source pollution treatment technologies, including source control, process blocking and end strengthening purification. The source control mainly reduces the generation of pollutants through land use planning and spatial layout, reasonable fertilization, water-saving irrigation and other measures. The process blocking effectively blocks the nitrogen, phosphorus and other pollutants in the runoff water into the water body through the ecological ridge technology, ecological interception buffer zone technology, biological fence technology and so on inside the farmland and the ecological ditch technology, ecological revetment slope technology and so on outside the farmland. The end strengthening purification purifies and treats the farmland drainage through the preposition library technology, ecological pond technology and artificial wetland technology.

[0005] However, the existing treatment technologies are mostly concentrated in the farmland and after the drainage, and the treatment of the farmland runoff at the farmland outlet position is relatively less. If a pollutant treatment device is arranged at the farmland outlet, the direct influence of the farmland drainage on the river water quality can be further reduced. Therefore, how to design a pollutant treatment device to treat the sewage at the farmland outlet is an urgent problem to be solved. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a farmland outlet pollutant treatment device to solve the problems in the prior art, treat the pollutants at the farmland outlet and reduce the influence of the farmland drainage on the river water quality.

[0007] In order to achieve the above object, the utility model provides the following scheme:

[0008] The utility model provides a farmland outlet pollutant treatment device, including wall -hanging type sewage pretreatment system, wall -hanging type sewage pretreatment system includes main body frame, screen and filler,

[0009] The main body frame is covered with the screen, and the main body frame and the screen form a three -dimensional screen cover together, the three -dimensional screen cover surrounds the outlet of farmland outlet pipeline, and the top of the three -dimensional screen cover is open, the opening in the top of the three -dimensional screen cover is located above the water surface of the discharge side of the farmland outlet pipeline, and the bottom of the three -dimensional screen cover is located below the water surface, the three -dimensional screen cover is filled with the filler, and the filler has the effect of sewage interception and filtration on the water of the farmland outlet.

[0010] Further, it further includes a plurality of porous suspended balls, the plurality of porous suspended balls are filled with solidified microorganisms, and the plurality of porous suspended balls float or suspend in the water in the three -dimensional screen cover.

[0011] Further, it further includes an external enclosure system, the external enclosure system includes an external enclosure and aquatic plants, the external enclosure surrounds the wall -hanging type sewage pretreatment system, and the aquatic plants are located between the wall -hanging type sewage pretreatment system and the external enclosure.

[0012] Further, the filler is further wrapped with a nylon mesh bag.

[0013] Further, the filler is any one of ceramsite, zeolite, volcanic rock and slag.

[0014] Further, the main body frame is made of stainless steel or aluminum alloy material and is fixed on the shore of the farmland outlet by expansion screws.

[0015] Further, the screen is a stainless steel screen.

[0016] Further, the screen has a pore size of 30-70 mesh.

[0017] Further, the external enclosure is a waterproof board or waterproof cloth.

[0018] Further, the aquatic plants are one or a combination of lentinus edodes and sargassum muticum.

[0019] The utility model has the following technical effects relative to the prior art:

[0020] The utility model discloses a farmland outlet pollutant treatment device, through adopt setting wall -hanging type pollution pre -treatment system at farmland outlet, the three -dimensional screen cover of system is wrapped farmland outlet to the filler that fills in three -dimensional screen cover is used to purify sewage, and the mesh on three -dimensional screen cover intercepts silt, and the upper opening of this three -dimensional screen cover, it is convenient for the timely replacement of filler, guarantees purifying sewage interception effect to continue effectively, makes the pollutant at farmland outlet be purified sewage interception, because farmland outlet is located at the bank of river, can effectively prevent the pollutant in farmland drainage from directly entering river through farmland outlet, greatly reduces the pollution of farmland drainage to river. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiments, obviously, the drawing in the following description only is some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying creative labor, still can obtain other drawings according to these drawings.

[0022] Fig. 1 It is a top view schematic diagram of the farmland outlet pollutant treatment device in the embodiments of the utility model.

[0023] Fig. 2 It is a wall -hanging type pollution pre -treatment system schematic diagram in the embodiments of the utility model.

[0024] Fig. 3 It is a porous suspended ball schematic diagram in the embodiments of the utility model.

[0025] Among them, 1, wall -hanging type pollution pre -treatment system, 11, main body frame, 12, mesh, 13, filler, 14, porous suspended ball, 15, solidified microorganism, 2, external enclosure system, 21, external enclosure, 22, aquatic plant, 3, farmland outlet pipeline, 4, bank. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments only are a 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 the ordinary skilled person in the art without making creative labor belong to the scope of protection of the utility model.

[0027] The utility model aims at providing a farmland outlet pollutant treatment device to solve the problems in the prior art, facilitate the operation personnel to hold the part and carry out honing processing, and reduce the security risk.

[0028] In order to make the above-mentioned purposes, characteristics and advantages of the utility model more apparent, specific and easy to understand, the utility model will be explained in further detail below in combination with the drawings and specific embodiments.

[0029] As shown in Figs. 1-2 The utility model provides a farmland outlet pollutant treatment device, which comprises a wall-mounted pollution discharge pretreatment system 1, the wall-mounted pollution discharge pretreatment system 1 comprises a main body frame 11, a mesh 12 and a filler 13.

[0030] The main body frame 11 is covered with the mesh 12, and the main body frame 11 and the mesh 12 jointly form a three-dimensional mesh cover. Fig. 2 As shown in the drawings, the three-dimensional mesh cover is a mesh-shaped three-dimensional object, the three-dimensional mesh cover surrounds the outlet of the farmland outlet pipeline 3, and the three-dimensional mesh cover is open at the top; the opening at the top of the three-dimensional mesh cover is located above the water surface on the discharge side of the farmland outlet pipeline 3, and the bottom of the three-dimensional mesh cover is located below the water surface; the farmland outlet pipeline 3 is used for discharging farmland runoff, the discharge port of the farmland outlet pipeline 3 is a farmland outlet, and the farmland outlet is arranged on one side of the bank 4 of the river channel; the three-dimensional mesh cover is filled with the filler 13, and the filler 13 has the effect of intercepting and filtering the water of the farmland outlet.

[0031] The mesh 12 on the three-dimensional mesh cover intercepts the silt, the three-dimensional mesh cover is open at the top, the filler 13 can be replaced in time, the purification and interception effect is continuously and effectively ensured, the pollutants at the farmland outlet are purified and intercepted by the filler 13, the pollutants in the farmland runoff can be effectively prevented from directly entering the river channel through the farmland outlet, and the pollution of the farmland runoff to the water quality of the river channel is greatly reduced.

[0032] As an implementable example, as shown in the drawings, Figs. 1-3 The three-dimensional mesh cover further comprises a porous suspended ball 14, the porous suspended ball 14 is filled with solidified microorganisms 15, and the porous suspended ball 14 floats or suspends in the water in the three-dimensional mesh cover; the solidified microorganisms 15 comprise nitrifying bacteria, denitrifying bacteria, COD-degrading bacteria, anaerobic bacteria, denitrifying bacteria and deodorizing bacteria, and can be proportioned and combined according to the components of the pollutants in the farmland runoff; the three-dimensional mesh cover further comprises SCM composite purification slow-release material in the application No. CN201710134792.5 and entitled "SCM composite purification material, preparation method and material release equipment", which is composed of the following raw materials in a weight ratio: growth factor 10%-15%, immobilized carbon source 35%-40%, composite microbial remediation agent 15%-20%, and the rest is activated mineral material; the composite material can solve the problems of insufficient indigenous microorganisms, imbalance of carbon-nitrogen ratio in water body and difficulty of local microorganisms in meeting the pollution conditions, and better solve the problem of insufficient comprehensive pollution reduction factors in water body.

[0033] As an implementable example, as shown in Fig. 1 The external enclosure system 2 comprises an external enclosure 21 surrounding the wall-mounted sewage pretreatment system 1, and aquatic plants 22 between the wall-mounted sewage pretreatment system 1 and the external enclosure 21, wherein the microorganisms released by the solidified microorganisms 15 in the porous suspended ball 14 can enter the external enclosure system 2 through the pores of the mesh 12, and the microorganisms growing on the roots of the aquatic plants 22 and the absorption of the aquatic plants 22 can perform multi-effect purification on the water body.

[0034] As an implementable example, the filler 13 can be wrapped with a nylon mesh bag outside, which facilitates the removal and replacement and cleaning of the filler 13, and improves the efficiency of replacing and cleaning the filler 13; wherein the filler 13 is any one of ceramic granules, zeolite, volcanic rock, and slag, or a combination of any two or more of ceramic granules, zeolite, volcanic rock, and slag, which can effectively adsorb nitrogen, phosphorus substances and impurities in the water body.

[0035] As an implementable example, as shown in Fig. 2 The main frame 11 is made of stainless steel or aluminum alloy material and is fixed on the bank 4 of the farmland outlet by expansion screws, which not only has high corrosion resistance and strength, but also is convenient for installation and maintenance; the mesh 12 is a 304 stainless steel mesh with a pore size of 30-70 meshes, preferably a 50-mesh 304 stainless steel mesh, which has high strength and can effectively filter impurities such as silt.

[0036] As an implementable example, as shown in Fig. 1 The external enclosure 21 is a waterproof board or waterproof cloth, such as a PVC board, a PVC coated fabric, and a waterproof canvas, which has good waterproof performance and does not affect the water body, and can effectively prevent the farmland drainage from directly entering the river; the aquatic plants 22 are floating leaf aquatic plants, such as one or a combination of Lysimachia clethophylla and Scytonema, and the microorganisms growing on the roots of the aquatic plants 22 and the aquatic plants 22 themselves can purify the water body.

[0037] The specific examples in the utility model are applied to illustrate the principles and implementation modes of the utility model, and the above examples are only used to help understand the core idea of the utility model; meanwhile, for those skilled in the art, according to the idea of the utility model, the specific implementation modes and application ranges will be changed. In conclusion, the content of the specification should not be understood as a limitation of the utility model.

Claims

1. An agricultural field drain outlet contaminant treatment device, characterized by: The wall-mounted sewage pretreatment system (1) comprises a main frame (11), a mesh (12) and a filler (13); The main frame (11) is covered with the mesh (12), and the main frame (11) and the mesh (12) jointly form a three-dimensional mesh cover which surrounds the outlet of the farmland outlet pipeline (3) and is open at the top; the opening at the top of the three-dimensional mesh cover is located above the water surface on the discharge side of the farmland outlet pipeline (3), and the bottom of the three-dimensional mesh cover is located below the water surface; the three-dimensional mesh cover is filled with the filler (13), and the filler (13) has the effect of sewage interception and filtration on the water of the farmland outlet.

2. The agricultural field drain outlet contaminant treatment device of claim 1, wherein: The wall-mounted sewage pretreatment system (1) further comprises porous suspended balls (14) filled with solidified microorganisms (15), which float or suspend in the water in the three-dimensional mesh cover.

3. The agricultural field drain outlet contaminant treatment device of claim 1 or 2, wherein: The wall-mounted sewage pretreatment system (1) further comprises an external enclosure system (2) which comprises an external enclosure (21) and aquatic plants (22), wherein the external enclosure (21) surrounds the wall-mounted sewage pretreatment system (1), and the aquatic plants (22) are located between the wall-mounted sewage pretreatment system (1) and the external enclosure (21).

4. The agricultural field drain outlet contaminant treatment device of claim 1, wherein: The filler (13) is further wrapped with a nylon mesh bag.

5. The agricultural field drain outlet contaminant treatment device of claim 1, wherein: The filler (13) is any one of ceramsite, zeolite, volcanic rock and slag.

6. The agricultural field drain outlet contaminant treatment device of claim 1, wherein: The main frame (11) is made of stainless steel or aluminum alloy material and is fixed on the bank (4) of the farmland outlet by expansion screws.

7. The agricultural field drain outlet contaminant treatment device of claim 1, wherein: The mesh (12) is a stainless steel mesh.

8. The agricultural field drain outlet contaminant treatment device of claim 1, wherein: The mesh (12) has a pore size of 30-70 mesh.

9. The agricultural field drain outlet contaminant treatment device of claim 3, wherein: The external enclosure (21) is a waterproof board or waterproof cloth.

10. The agricultural field drain outlet contaminant treatment device of claim 3, wherein: The aquatic plants (22) are one or a combination of Lysidice rhizomes and Enteromorpha prolifera.

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