CN218709706U - River bypass water body purification system - Google Patents

Abstract

The utility model relates to the technical field of water pollution treatment, aiming at realizing the unpowered purification function, not only can be used for purifying the water body of a river, but also can be used for purifying the water body before tributary, tail water or rainwater runoff is converged into the river, in particular to a river bypass water body purification system, which comprises a primary sinking wetland, a surface flow constructed wetland, an undercurrent constructed wetland and a horizontal seepage type constructed wetland which are connected in sequence; and the joint of the primary wetland and the river, the joint of the wetland and the joint of the horizontal seepage type artificial wetland and the river are respectively provided with a filtering module.

Description

River bypass water body purification system

Technical Field

The utility model relates to a water pollution administers technical field, in particular to river bypass water clean system.

Background

In recent years, due to the reasons of accelerated development of urbanization and industrialization, increased fertilizer usage amount, increased livestock and poultry scale, increased meat consumption and the like, a large amount of organic matters and nutrient substances (nitrogen and phosphorus) and the like are contained in a water body, so that the water body is eutrophicated, algae and other plankton are caused to rapidly breed, the dissolved oxygen in the water body is reduced, and the species distribution of an aquatic ecosystem is unbalanced. Aiming at the situation, various water body purification systems have been developed at home and abroad to improve the river water quality, wherein the constructed wetland purification system has outstanding advantages in sewage purification, can quickly adapt to the variation range of the water quality, and has simple and quick operation and better sewage purification treatment effect. However, since the constructed wetland needs a large area, it is difficult to apply the wetland to a river reservoir area, and a common method is to use a vegetation contact oxidation method, that is, to remove pollutants by using metabolism of plants.

Compared with the traditional constructed wetland purification system, the river purification system adopting the vegetation contact oxidation method has higher removal efficiency on nutrient substances, but has smaller specific surface area for microorganisms living in a contact medium. In a purification system having sand, etc., pores in contact with a medium become narrow, and the pores are easily clogged to generate an odor, which causes a problem that frequent cleaning or rinsing is required.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming current water purification technical defect and a river bypass water clean system that provides, aim at realizing unpowered purification performance, both can be used for river self water to purify, also can be used for tributary, tail water or the water purification before the rainwater runoff remixes the river.

The utility model adopts the technical scheme as follows: a river bypass water body purification system comprises a primary sedimentation wetland, a surface flow constructed wetland, an underflow constructed wetland and a horizontal seepage constructed wetland which are connected in sequence; and the joint of the primary wetland and the river, the joint of the wetland and the wetland, and the joint of the horizontal seepage type artificial wetland and the river are all provided with a filtering module.

Furthermore, the water surface of the primary wetland is provided with at least one layer of phytoplankton, and the section of the primary wetland is in an inverted triangle shape.

Furthermore, a group of porous soil balls used for planting water purification vegetation are arranged at the bottom of the surface flow constructed wetland.

Further, the porous soil ball is planting soil wrapped by geotextile.

Further, the subsurface flow constructed wetland comprises a planting module arranged on the water surface and a carrier module positioned in the water body below the planting module; the planting module sequentially comprises a soil layer, a gravel layer and a porous wood board bearing structure from top to bottom; the carrier module comprises an external frame and a plurality of purification units vertically arranged in the carrier module, and each purification unit comprises a net bag structure and a purification carrier arranged in the purification unit.

Further, purify the carrier including the loess purification structure who is used as the plant foundation to and set up in loess purification structure upside, for the fibrous material structure of microorganism provision habitat, loess purification structure includes a filler section of thick bamboo and fills the loess filler in a filler section of thick bamboo.

Furthermore, the bottom of the horizontal seepage type constructed wetland is filled with a layer of collapsible loess for planting water-purifying vegetation.

Furthermore, the filtering module consists of a check net box, geotextile and zeolite, wherein the zeolite is filled in the inner space of the check net box after being wrapped by the geotextile.

The utility model has the advantages that: the utility model discloses a construct bypass water clean system by the river, each wetland carries out the multilayer to the pollutant in the water and purifies in the system, can realize unpowered purification performance, both can be used for river self water to purify, also can be used for water purification before tributary, tailwater or rainwater runoff remittance river.

Drawings

Fig. 1 is a general layout diagram of a river bypass water purification system provided by an embodiment of the present invention;

fig. 2 is a primary wetland cross-sectional view of a river bypass water purification system provided by an embodiment of the utility model;

fig. 3 is a cross-sectional view of a surface flow constructed wetland of a river bypass water purification system provided by an embodiment of the invention;

FIG. 4 is a cross-sectional view of an undercurrent constructed wetland of a river bypass water purification system provided by the embodiment of the utility model;

fig. 5 is a schematic view of a carrier module of a river bypass water purification system provided by an embodiment of the present invention;

fig. 6 is a cross-sectional view of a horizontal seepage type artificial wetland of a river bypass water purification system provided by the embodiment of the utility model.

In the figure: 100-primary settling of the wetland; 200-surface flow artificial wetland; 210-porous soil balls; 300-subsurface flow constructed wetland; 310-a carrier module; 311-a purification unit; 312 — an outer frame; 3110-purification of the carrier; 3120-tuck net structure; 3111-loess purification structure; 3112-fibrous material structure; 320-planting module; 321-soil layer; 322-a gravel layer; 323-porous wood bearing structure; 400-horizontal seepage type constructed wetland, 410-collapsible loess; 500-filtration module.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples, but the present invention is not limited to the following examples.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer" \ "front end", "rear end", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the utility model provides a river bypass water body purification system, set up beside the river, including just sinking wetland 100, surface current constructed wetland 200, undercurrent constructed wetland 300, horizontal seepage flow formula constructed wetland 400 and filtration module 500. Water in the river is introduced through a ditch and flows through the primary wetland 100, the filtering module 500, the surface flow artificial wetland 200, the filtering module 500, the subsurface flow artificial wetland 300, the filtering module 500 and the horizontal seepage artificial wetland 400 in sequence, and water body particles, organic matters, heavy metals and nutrient salts are removed and then are converged into the river through the ditch. In this process, the filtering module 500 may be disposed between the water inlet end of the primary wetland 100 and the river, and the filtering module 500 may be disposed between the water outlet end of the horizontal seepage type constructed wetland 400 and the river. The water inlet end and the water outlet end of each wetland are kept at a proper distance, and the water flow speed is controlled, so that the wetland can fully purify pollutants.

As shown in fig. 2, the primary sedimentation wetland 100 is in an inverted triangle shape, and is mainly used for removing silt and soil particles in a water body through a natural sedimentation effect, and sediments are gradually accumulated at the bottom, so that the primary sedimentation wetland is convenient to clean. Phytoplankton such as water hyacinth is planted on the water surface of the primary wetland 100, and aerobic microorganisms are attached to the stems, leaves and roots of the phytoplankton, so that BOD (biochemical oxygen demand) can be effectively removed.

As shown in fig. 3, a group of porous soil balls 210 are arranged at the bottom of the surface flow constructed wetland 200, water purification vegetation is planted by using the porous soil balls 210 to remove organic matters, heavy metals and nutrient salts, and the specific planting type is determined according to actual conditions. The porous soil ball 210 is planting soil wrapped by geotextile, and provides a foundation for rapid growth of roots of water-purifying vegetation.

As shown in fig. 4 and 5, the subsurface flow constructed wetland 300 comprises a carrier module 310 and a planting module 320. Planting module 320 sets up on the surface of water, planting module 320 includes soil layer 321, gravel layer 322 and porous plank bearing structure 323 from top to bottom in proper order. The soil layer 321 and the gravel layer 322 provide planting environment for vegetation, aquatic plants with developed root systems such as cane shoots and reeds are planted, and the porous wood board bearing structure 323 supports the soil layer 321 and the gravel layer 322. The carrier module 310 is located in the water body of the space S1 below the planting module 320. The carrier module 310 includes an outer frame 312 and a plurality of purification units 311 vertically disposed within the outer frame 312. Each purification unit 311 includes a string bag structure 3120 and a purification carrier 3110 disposed in the inner space S2 of the string bag structure 3120. The purification carrier 3110 includes a loess purification structure 3112 and a fiber material structure 3111, the fiber material structure 3111 being on an upper side of the loess purification structure 3112.

The loess purification structure 3112 includes a filler tube and a loess filler filled in the filler tube, and the loess filler is a powder formed by burning a mixture of loess and an organic material at 900 ℃. The minerals in the loess can provide living environment for the microorganisms. The filler cylinder of the loess purification structure 3112 may be a cylindrical structure, and may use the loess purification structure 3112 as a plant root system base for planting the module 320. The fiber material structure 3111 is a fiber ring, has a large surface area, is beneficial to water purification, and provides a habitat for microorganisms.

As shown in fig. 6, the bottom of the horizontal seepage type constructed wetland 400 is filled with a layer of collapsible loess 410 and aquatic, marsh and hygrophytes such as reed, cattail, allium mongolicum, etc. are planted, so that low-concentration organic matters and heavy metals in the water body can be further removed. The loess has strong adsorption effect on heavy metal ions and organic matters, and the vegetation root system can absorb the heavy metal ions and the organic matters from the loess and the water body.

The filtration module 500 is composed of a check net cage, geotextile and zeolite. The zeolite is wrapped by geotextile and then filled in the inner space of the check net box, and the porous structure of the zeolite is utilized to filter large particles flowing through.

And leading out water in the river, sequentially treating the water in the filtering module-primary settling wetland-filtering module-surface flow artificial wetland-filtering module-subsurface flow artificial wetland-filtering module-horizontal seepage artificial wetland-filtering module of the river bypass water body purification system, removing water body particles, organic matters, heavy metals and nutritive salts, and then converging the water into the river.

The filtering module filters water particulate matters; the primary settling wetland removes silt and soil particles in the water body through natural settling action, and removes oxygen in the water body through aerobic microorganisms attached to phytoplankton; organic matters, heavy metals and nutrient salts in the water body are removed by the surface flow constructed wetland through water purification vegetation, the nutrient salts in the water body are further removed by the subsurface flow constructed wetland through microbial decomposition and vegetation root adsorption, and the organic matters and the heavy metals in the water body are further removed by the collapsible loess and the water purification vegetation of the horizontal seepage flow constructed wetland.

The above description is only a preferred embodiment of the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A river bypass water body clean system which characterized in that: comprises a primary wetland (100), a surface flow artificial wetland (200), an undercurrent artificial wetland (300) and a horizontal seepage artificial wetland (400) which are connected in sequence; the joint of the primary wetland (100) and the river, the joint of the wetland and the wetland, and the joint of the horizontal seepage type artificial wetland (400) and the river are all provided with a filtering module (500).

2. The river bypass water body purification system of claim 1, wherein: the water surface of the primary wetland (100) is provided with at least one layer of phytoplankton, and the section of the primary wetland (100) is in an inverted triangle shape.

3. The river bypass water body purification system as claimed in claim 2, wherein: the bottom of the surface flow artificial wetland (200) is provided with a group of porous soil balls (210) for planting water purification vegetation.

4. The river bypass water body purification system of claim 3, wherein: the porous soil ball (210) is planting soil wrapped by geotextile.

5. The river bypass water body purification system of claim 4, wherein: the subsurface flow constructed wetland (300) comprises a planting module (320) arranged on the water surface and a carrier module (310) positioned in the water body below the planting module (320); the planting module (320) sequentially comprises a soil layer (321), a gravel layer (322) and a porous wood board bearing structure (323) from top to bottom; the carrier module (310) comprises an outer frame (312) and a plurality of purification units (311) vertically arranged in the carrier module, wherein each purification unit (311) comprises a net bag structure (3120) and a purification carrier (3110) arranged in the carrier module.

6. The river bypass water body purification system of claim 5, wherein: purify carrier (3110) including the loess purification structure (3112) that is used as the plant foundation to and set up in loess purification structure upside, for the fibrous material structure (3111) that the microorganism provided the habitat, loess purification structure (3112) include a filler section of thick bamboo and fill the loess filler in a filler section of thick bamboo.

7. The river bypass water body purification system of claim 6, wherein: the bottom of the horizontal seepage type artificial wetland (400) is filled with a layer of collapsible loess (410) for planting water purification vegetation.

8. The river bypass water purification system of claim 7, wherein: the filter module (500) is composed of a check net box, geotextile and zeolite, and the zeolite is wrapped by the geotextile and then filled in the inner space of the check net box.

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