CN115467289B - Purification module and ecological bank protection - Google Patents
Purification module and ecological bank protection Download PDFInfo
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- CN115467289B CN115467289B CN202211172178.5A CN202211172178A CN115467289B CN 115467289 B CN115467289 B CN 115467289B CN 202211172178 A CN202211172178 A CN 202211172178A CN 115467289 B CN115467289 B CN 115467289B
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides a purification module and an ecological bank protection, wherein the purification module comprises a plurality of purification modules, the purification modules are sequentially and adjacently arranged along the inclined direction of a slope, each purification module comprises a frame with a purification cavity inside and a purification medium placed in the purification cavity, the vertical upper end of the frame is provided with an opening for water to flow through and communicated with the purification cavity and an overflow channel communicated with two adjacent purification cavities and the opening, and the vertical lower end of the frame is provided with a first permeation channel communicated with the two adjacent purification cavities. According to the invention, different kinds of purifying media can be selected in different purifying modules, and different kinds of purifying media can be used for purifying different kinds of initial rain and non-point source pollutants, so that accurate pollution control is realized. Meanwhile, the invention can be additionally provided with the lifting pump which is used for pumping the sewage in the river channel into the purification module, so that the invention can realize the purification of the sewage in the river channel in a sunny environment, and greatly expands the water quality purification function of the invention.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a purification module and an ecological bank protection with the purification module.
Background
When raining, urban non-point source pollutants are carried by rainwater to enter river water in a large amount, so that serious pollution of river water is caused, and rainfall runoff pollution is second to agricultural non-point source pollution.
In order to solve the problem of rainfall runoff pollution, a plurality of sponge urban ecological measures are implemented in many cities. However, various existing sponge urban ecological measures still have certain drawbacks, such as the traditional grass planting ditches, mainly aim at natural seepage, and have limited runoff reduction; the traditional small ecological wetland is mainly arranged in a flat and open area or district, so that the water quality is easily deteriorated, mosquitoes are bred, and the regional environment is influenced; the rainwater garden landscape effect is good, but is limited by urban land; the primary rain regulating reservoir is also severely limited by urban land resources and is difficult to widely apply; the intelligent drainage well has high construction cost and high maintenance cost, and after primary rain drainage flows into a sewage system, the COD (Chemical Oxygen Demand, i.e. chemical oxygen demand) value and BOD (Biochemical oxygen demand, i.e. biochemical oxygen demand) value of the sewage system are reduced, the chemical oxygen demand of the reducing substances to be oxidized in the water sample is measured by a chemical method, and the quantity of dissolved oxygen consumed in the biochemical reaction process of decomposing the biodegradable organic substances in the water by microorganisms under certain conditions is not beneficial to sewage treatment by a sewage treatment plant, so that the cost of sewage treatment is greatly increased.
The ecological revetment is constructed beside the river channel, so that the defects can be effectively overcome, but the ecological revetment in the prior related art is generally of an integral structure, and has the advantages of larger transverse occupied area, higher later maintenance difficulty and higher maintenance cost.
But also has the problems of poor purification effect on sewage, single structure and function, different purification capacities on different initial rain and non-point source pollutants, and difficulty in achieving accurate pollution control.
Disclosure of Invention
The invention aims to provide a purification module and an ecological bank protection, which are used for solving the technical problems of high maintenance difficulty, high maintenance cost, poor purification effect on sewage and difficulty in achieving accurate pollution control in the later stage of ecological bank protection in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in a first aspect, a purification module is provided, including a plurality of purification module, a plurality of purification module is followed the slope direction is adjacent in proper order to be arranged, each purification module is including inside be equipped with the frame of purification chamber, place in purification medium in the purification chamber, the vertical upper end of frame has been seted up and has been supplied rivers to pass through and communicate the uncovered of purification chamber and the intercommunication is adjacent two purification chamber and uncovered overflow channel, the frame has been seted up at vertical lower extreme and has been communicated adjacent two the first infiltration passageway of purification chamber.
By adopting the technical scheme, the purification modules are sequentially arranged adjacently along the inclined direction of the slope, the purification cavities of two adjacent purification modules are connected through the first permeation channel, water flow sequentially passes through the purification media of the purification modules from top to bottom, pollutants in the water flow are intercepted or adsorbed by the purification media, and the pollutants are separated from the water flow through the interception or adsorption effect of the multi-layer purification media, so that the purification of the water flow is realized; meanwhile, an overflow channel communicated with the purification cavity is further arranged in the purification module, part of water flow in the upper-stage purification module can overflow into the air environment at the opening through the overflow channel and flow into the lower-stage purification module, so that the part of water flow can be aerated and oxygenated in the air environment, oxygen can be supplemented into the water flow through aeration and oxygenation, the content of dissolved oxygen in the water flow is improved, the metabolic activity of aquatic organisms, particularly microorganisms, is improved, the degradation rate of organic pollutants in the water flow is improved, and the purpose of purifying the water flow is achieved. The purification effect of the purification module on sewage can be improved through the combination of the schemes; meanwhile, different kinds of purifying media can be selected in different purifying modules, and can be used for purifying different kinds of initial rain and non-point source pollutants, so that accurate pollution control is achieved.
In some embodiments, the overflow channel communicates with the first permeate channel.
By adopting the technical scheme, water flow in the purification module can flow downwards under the action of gravity, after being purified by the purification medium in the purification module at the upper stage, the water flow can flow into the purification module at the lower stage through the first permeation channel, the first permeation channel is arranged at the vertical lower end of the frame, so that the water flow can flow into the purification module at the lower stage only by the purification medium in the purification module at the upper stage, the overflow channel is communicated with the first permeation channel, the water overflowed from the overflow channel can be ensured to be water at the vertical lower end of the frame, and the water is prevented from being backlogged at the vertical lower end of the frame, so that part of water flow cannot be effectively purified; meanwhile, the water overflowed from the overflow channel is guaranteed to be purified by the purifying medium in the purifying module of the upper stage, and the purifying efficiency of the purifying module on sewage is improved.
In some embodiments, a partition plate is vertically arranged in the middle of the frame, the partition plate divides the purification cavity into a first purification unit loaded with a first purification medium and a second purification unit loaded with a second purification medium, and a second permeation channel communicated with the first purification unit and the second purification unit is arranged at the vertical lower end of the partition plate; the height of the first purifying unit is larger than that of the second purifying unit, and the partition plate divides the opening into a first partition opening for water inflow and a second partition opening for water outflow.
By adopting the technical scheme, under the action of the hydraulic pressure difference between the first purifying unit and the second purifying unit, water flows from the top end of the first purifying unit to the bottom end of the first purifying unit, passes through the second permeation channel, and then flows from the bottom end of the second purifying unit to the top end of the second purifying unit; the rivers purify through the first purification medium in the first purification unit, second infiltration passageway and the second purification medium in the second purification unit in proper order, and the purification route of rivers has greatly increased to the technical scheme of this embodiment, has improved the purification effect of purification module to rivers.
In some embodiments, a plurality of the purification modules form a multi-stage purification module from top to bottom along the inclined direction of the slope; wherein, placed in each level purification module purification medium, purification medium includes polyurethane granule, living beings carbon, volcanic rock grain, well coarse sand and zeolite at least one.
Through adopting above-mentioned technical scheme, rivers are from last multistage purification module to passing through in proper order down along the sloping direction on domatic, and the purification medium of each stage purification module can intercept or adsorb the pollutant particle in the rivers, and then realizes the purification to the rivers.
In some embodiments, the multi-stage purification module comprises a first stage purification module, a second stage purification module and a third stage purification module which are sequentially arranged from top to bottom, the first stage purification module comprises a third purification unit, a third purification medium in the third purification unit is polyurethane particles, the second stage purification module comprises a fourth purification unit and a fifth purification unit, the fourth purification medium of the fourth purification unit is biomass carbon, the fifth purification medium of the fifth purification unit is volcanic particles, the third stage purification module comprises a sixth purification unit and a seventh purification unit, the sixth purification medium of the sixth purification unit is medium coarse sand, and the seventh purification medium of the seventh purification unit is zeolite.
Through adopting above-mentioned technical scheme, rivers flow from last to down, after polyurethane granule, living beings carbon, volcanic rock grain, well coarse sand and zeolite in proper order, under the degradation effect of the microorganism of adhesion on above-mentioned material and its physisorption's effect, can carry out multiple purification to rivers, promote the purifying effect of purification module to rivers.
In some embodiments, the purification module further comprises a reservoir communicated with the purification module and arranged at the upper end of the slope, a lifting pump and a water storage area communicated with the purification module and arranged at the lower end of the slope, a rainwater grate used for allowing water to flow into the reservoir is arranged on the reservoir, a water outlet is further arranged on the reservoir, a water inlet is arranged in the water storage area, the lifting pump is communicated with the water inlet and the water outlet, and the lifting pump is used for pumping water in the water storage area into the reservoir.
Through adopting above-mentioned technical scheme, the elevator pump can be with the rivers pump in the water storage region to the cistern in, and the rivers in the cistern discharge to the water storage region after purifying the module under the effect of gravity again, constitute a hydrologic cycle clean system. The water circulation purifying system can realize the repeated purification of water flow in the water storage area and improve the purifying effect of the water flow. Meanwhile, when the river water quality is poor or does not reach the standard on a sunny day, the water circulation purification system is started, so that the purification module is prevented from being idle on the sunny day, and the applicability of the purification module in different weather environments is improved; meanwhile, the sewage is pumped to the purification module from the water storage area in sunny days, on one hand, the water quality of the river is purified through the purification medium in the purification module which is arranged step by step, and on the other hand, the aeration and oxygenation of the river are realized through the overflow channel.
Further, the technical scheme provided by the embodiment breaks through the technical limitation that the ecological bank protection can only play a role in rainy days (purifying initial rainwater/runoff surface source pollution) in the related technology, and the invention can also construct a water circulation purifying system based on a lifting pump and a purifying module during sunny days, so that the water quality purifying function of the ecological bank protection is greatly expanded.
In some embodiments, the lift pump is a solar lift pump, a solar cell electrically connected with the solar lift pump and a street lamp electrically connected with the solar cell are further arranged on the slope, and the solar cell is used for supplying power to the solar lift pump and the street lamp.
In some embodiments, a slag blocking basket is clamped on the water reservoir, the slag blocking basket is positioned below the rainwater grate, and a slag box is arranged at the bottom of the water reservoir.
Through adopting above-mentioned technical scheme, solar cell is used for supplying power for solar lift pump and street lamp, and the street lamp can provide the illumination, and solar lift pump can be with the rivers pump in the water storage region to the cistern in, realizes water cycle. The solar power generation technology is an environment-friendly power generation technology, and has no ecological pollution. The slag blocking basket can intercept part of large-particle pollutants, so that the pressure of the purification process of the purification module is reduced, and the slag blocking basket is clamped on the water reservoir to be convenient for cleaning and replacement. The sediment box can collect the pollutant of sinking into the bottom of the cistern, is convenient for follow-up cleaning to the cistern.
In some embodiments, the purification medium is provided with a planting soil layer thereon, the planting soil layer includes a planting basket clamped on the purification module, planting soil placed in the planting basket, and plants planted on the planting soil, the plants including at least one of submerged plants, herbaceous plants, small shrubs, wet plants, emergent aquatic plants, and floating plants.
By adopting the technical scheme, the planting basket is clamped on the purification module, so that the planting basket is convenient to detach and replace; the plants can absorb substances such as nitrogen, phosphorus and the like in the water flow, so that the water flow is purified; meanwhile, the plants have certain ornamental value, and the purification module with the plants is placed beside the urban river to help to improve the attractiveness of the city.
In some embodiments, the purification module further comprises a foot locking anchor fixedly connected to the purification module, the foot locking anchor fixing each purification module to the slope;
in some embodiments, the purification module further comprises a rock masonry and a water storage area communicated with the purification module at the lower end of the slope, wherein the rock masonry is arranged on the surface of the purification module close to the water storage area.
Through adopting above-mentioned technical scheme, lock foot stock can be fixed each purification module on domatic, and the rock brickwork also helps stabilizing purification module on domatic, provides better living space for the aquatic organism simultaneously, promotes purification module's overall stability.
In a second aspect, an ecological revetment is provided, including the purification module in any of the above-mentioned aspects, wherein the purification modules are disposed on one side of the river bank or on two opposite sides of the river bank, and are disposed in parallel along a length direction of the river bank.
By adopting the technical scheme, the ecological bank protection consists of a plurality of modularized purification modules, is convenient to assemble and disassemble, can fully utilize underground space and vertical space on a slope, and is customized according to the environment of a construction site compared with the ecological bank protection integrally formed in the related art, and the transverse occupied area of a single purification module is smaller, and the modularized purification modules are more convenient to maintain in the later period and lower in maintenance cost; meanwhile, the purification module can be prefabricated in a factory and transported to a construction site for installation, and compared with the ecological bank protection of field construction in the related technology, the ecological bank protection provided by the embodiment can save the construction period, simplify the construction process and save the labor cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a purification module according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a purifying unit according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of a purification unit according to a second embodiment of the present invention;
FIG. 4 is a schematic diagram of a purification module according to a third embodiment of the present invention;
FIG. 5 is a schematic diagram of a purification module according to a fourth embodiment of the present invention;
FIG. 6 is a schematic diagram of a purification module according to a fifth embodiment of the present invention;
FIG. 7 is a schematic flow diagram of a secondary water flow of a purification module according to an embodiment of the present invention;
fig. 8 is a top view of a part of the structure of the ecological revetment according to the embodiment of the present invention.
The reference numerals in the drawings are as follows: 100. a purification module; 200. ecological bank protection; 300. a slope; 400. a road; 500. a water storage area;
1. a purification module; 2. a concrete cushion layer; 3. a reservoir; 4. a lift pump; 5. planting a soil layer; 6. locking the foot anchor rod; 7. rock masonry; 8. a street lamp;
11. a purification chamber; 12. a frame; 13. purifying the medium; 14. an opening; 15. an overflow channel; 16. a first permeate channel; 31. a rain grate; 32. a water outlet; 33. a slag blocking basket; 34. a sediment box; 35. a communicating pipe; 36. a gate; 37. a communication port; 41. a water inlet; 42. a water pump chamber; 51. a planting basket; 52. planting soil; 53. a plant; 54. a cobble layer; 81. a solar cell;
111. A first purifying unit; 112. a second purifying unit; 121. a partition plate; 131. polyurethane particles; 132. biomass carbon; 133. volcanic rock particles; 134. middle coarse sand; 135. a zeolite; 141. a first dividing opening; 142. a second partition port; 151. an overflow member; 511. a buckle; 531. nitrogen and phosphorus removing plants; 532. herbs and shrubs; 533. wet-growing plants; 534. wet plants and emergent aquatic plants; 535. emerging plants; 536. a floating plant;
1211. a second permeate channel.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected or indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing the invention based on the orientation or positional relationship shown in the drawings, and are not to be construed as limiting the invention, as the indicating device or element must have a particular orientation, be constructed and operated in a particular orientation.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating relative importance or indicating the number of technical features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The following describes in more detail the specific implementation of the present invention in connection with specific embodiments:
as shown in fig. 1, and referring to fig. 2, a purification module 100 provided in this embodiment of the present invention includes a plurality of purification modules 1, where the purification modules 1 are sequentially and adjacently arranged along an inclined direction of a slope 300, each purification module 1 includes a frame 12 having a purification chamber 11 therein, a purification medium 13 placed in the purification chamber 11, and a water supply flow (to be specific, the water flow mainly refers to a water flow containing a first rain pollutant, a water flow containing a non-point source pollutant, or other forms of sewage) is provided at a vertical upper end of the frame 12, and the water flow is defined as the water flow that is mainly referred to as the water flow containing a first rain pollutant, or the water flow containing a non-point source pollutant, or other forms of sewage, and an overflow channel 15 that is connected to the two adjacent purification chambers 11 and the opening 14 is provided at a vertical lower end of the frame 12.
It will be appreciated that the cross-sectional shape of the purge chamber 11 may be either regular or irregular in geometry; specifically, the cross-sectional shape of the purge chamber 11 includes, but is not limited to: rectangular, trapezoidal, and funnel-shaped; more specifically, the cross-sectional shape of the purge chamber 11 in this embodiment is preferably rectangular.
It will be appreciated that the material of the frame 12 should be a material that is not readily corroded by water currents; specifically, the materials of the frame 12 include, but are not limited to: stainless steel, high strength aluminum alloys, and the like.
It is understood that purification media 13 includes, but is not limited to, woven materials, porous solids, and packing media; specifically, the woven material includes a filter cloth and a filter screen woven from natural or synthetic fibers, metal wires, etc., a single strand filter screen made from fibers such as polyamide, polyester, or polypropylene, etc. The porous solid comprises a ceramic, a sintered metal or glass, or a porous plastic pipe formed by bonding plastic fine powder. The stacking medium comprises granular materials such as sand, gravel, charcoal, diatomite and the like, or a stacking layer of non-woven fibers such as glass wool and the like. It will be appreciated that the purification media 13 may partially fill the space within the purification chamber 11 or may completely fill the space within the purification chamber 11.
It can be understood that the overflow channel 15 can overflow the water flow in the purifying cavity 11 to the opening 14, and the water flow can be fully contacted with the air at the opening 14, so that the aeration and oxygenation functions are realized; those skilled in the art will appreciate that aeration and oxygenation can supplement oxygen to the water stream, increase the dissolved oxygen content of the water stream, and increase the metabolic activity of aquatic organisms, particularly microorganisms, thereby increasing the degradation rate of organic pollutants in the water stream and achieving the purpose of purifying the water stream.
As will be appreciated, the first permeate passage 16 should be provided between the purification media of the upper stage purification module 1 and the purification media of the lower stage purification module 1, the first permeate passage 16 having a function of allowing water flow therethrough and blocking the passage of the purification media 13; specifically, one or both ends of the first permeate passage 16 are provided with a filtration membrane or filter screen; more specifically, it is preferable in this embodiment to provide a dense mesh filter at both ends of the first permeate passage 16.
By adopting the technical scheme, the purification modules 1 are sequentially adjacently arranged along the inclined direction of the slope surface 300, the purification cavities 11 of two adjacent purification modules 1 are connected through the first permeation channel 16, water flows sequentially pass through the purification media 13 of the purification modules 1 from top to bottom, pollutants in the water flows are intercepted or adsorbed by the purification media 13, and the pollutants are separated from the water flows through the interception or adsorption effect of the multi-layer purification media 13, so that the purification of the water flows is realized; meanwhile, an overflow channel 15 communicated with the purification cavity 11 is further arranged in the purification module 1, part of water flow in the upper-stage purification module can overflow into the air environment at the opening 14 through the overflow channel 15 and flow into the lower-stage purification module, so that the part of water flow can be aerated and oxygenated in the air environment, oxygen can be supplemented into the water flow through aeration and oxygenation, the content of dissolved oxygen in the water flow is improved, the metabolic activity of aquatic organisms, particularly microorganisms, is improved, the degradation rate of organic pollutants in the water flow is improved, and the purpose of purifying the water flow is achieved. The combination of the schemes can improve the purification effect of the purification module 100 on sewage; meanwhile, different kinds of purifying media 13 can be selected in different purifying modules 1, and different kinds of purifying media 13 can purify different kinds of initial rain and non-point source pollutants, so that accurate pollution control is achieved.
As an alternative to this embodiment, the overflow channel 15 communicates with the first permeate channel 16.
By adopting the technical scheme, after the water flow in the purification module 1 flows downwards under the action of gravity and is purified by the purification medium 13 in the purification module 1 at the upper stage, the water flow can flow into the purification module 1 at the lower stage through the first permeation channel 16, the first permeation channel 16 is arranged at the vertical lower end of the frame 12, so that the water flow can flow into the purification module 1 at the lower stage only by passing through the purification medium 13 in the purification module 1 at the upper stage, the overflow channel 15 is communicated with the first permeation channel 16, the water overflowed from the overflow channel 15 can be ensured to be water at the vertical lower end of the frame 12, and the water is prevented from being backlogged at the vertical lower end of the frame 12 so that part of the water flow can not be purified effectively; meanwhile, the water overflowed from the overflow channel 15 is guaranteed to be purified by the purifying medium 13 in the purifying module 1 at the upper stage, and the purifying efficiency of the purifying module 1 on sewage is improved.
As an alternative implementation of the second embodiment shown in fig. 3, a partition plate 121 is vertically arranged at the middle part of the frame 12, the partition plate 121 divides the purifying chamber 11 into a first purifying unit 111 for loading a first purifying medium and a second purifying unit 112 for loading a second purifying medium, and the partition plate 121 is provided with a second penetrating channel 1211 at the vertical lower end, which communicates the first purifying unit 111 and the second purifying unit 112; wherein the height of the first purifying cell 111 is greater than the height of the second purifying cell 112, and the partition 121 partitions the opening 14 into a first partition 141 for inflow water and a second partition 142 for outflow water.
It will be appreciated that a conduit for overflow may also be provided within the partition 121 to facilitate the overflow of the water flow in the clean chamber 11 to the air environment.
It will be appreciated that the height of the first purifying element 111 must be greater than the height of the second purifying element 112 so that the water pressure of the water stored in the purifying chamber 11 of the first purifying element 111 is greater than the water pressure of the water stored in the purifying chamber 11 of the second purifying element 112, so that the water flow can flow from the first separating opening 141 into the first purifying element 111 and into the second purifying element 112 via the second penetrating channel 1211, and the surplus water flow can be discharged from the second separating opening 142 under the action of the pressure difference due to the limited ability of the first penetrating channel 16 to pass through the water flow.
By adopting the above technical scheme, under the action of the hydraulic pressure difference between the first purifying unit 111 and the second purifying unit 112, the water flow flows from the top end of the first purifying unit 111 to the bottom end of the first purifying unit 111, passes through the second permeation channel 1211, and then flows from the bottom end of the second purifying unit 112 to the top end of the second purifying unit 112; the water flow sequentially passes through the first purifying medium in the first purifying unit 111, the second penetrating channel 1211 and the second purifying medium in the second purifying unit 112 for purification, and the technical scheme of the embodiment greatly increases the purifying path of the water flow and improves the purifying effect of the purifying module 1 on the water flow.
As an alternative implementation of this embodiment, a plurality of purification modules 1 are formed in multiple stages from top to bottom along the inclined direction of the slope; wherein, the purifying medium 13 is placed in each stage of purifying module, and the purifying medium 13 comprises at least one of polyurethane particles 131, biomass carbon 132, volcanic particles 133, medium coarse sand 134 and zeolite 135.
Those skilled in the art can know that polyurethane particles 131, biomass carbon 132, volcanic particles 133, medium coarse sand 134 and zeolite 135 are all stacking media, and pollutants in water flow can be intercepted or adsorbed by the purifying media 13, so that pollutants are separated from the water flow through interception or adsorption of the multi-layer purifying media 13, and purification of the water flow is realized.
It will be appreciated that the present embodiment is not limited to this type and proportion of the purification media placed in each stage of the purification module 1, and may be one of polyurethane particles 131, biomass carbon 132, volcanic particles 133, medium coarse sand 134, and zeolite 135, or may be a plurality of polyurethane particles 131, biomass carbon 132, volcanic particles 133, medium coarse sand 134, and zeolite 135.
Through adopting above-mentioned technical scheme, rivers are from last multistage purification module to passing through in proper order down along the sloping direction on domatic, and the purification medium 13 of each stage purification module can intercept or adsorb the pollutant particles in the rivers, and then realizes the purification to the rivers.
As an alternative implementation manner of the third embodiment shown in fig. 4, the multi-stage purification module includes a first-stage purification module, a second-stage purification module and a third-stage purification module sequentially arranged from top to bottom, the first-stage purification module includes a third purification unit, a third purification medium in the third purification unit is polyurethane particles 131, the second-stage purification module includes a fourth purification unit and a fifth purification unit, the fourth purification medium of the fourth purification unit is biomass carbon 132, the fifth purification medium of the fifth purification unit is volcanic particles 133, the third-stage purification module includes a sixth purification unit and a seventh purification unit, the sixth purification medium of the sixth purification unit is medium coarse sand 134, and the seventh purification medium of the seventh purification unit is zeolite 135.
Those skilled in the art can appreciate that the polyurethane particles have a relatively large specific surface area, can effectively intercept some large particle pollutants, and have a relatively light mass and are easy to replace relative to other filter substances with the same volume.
As those skilled in the art will appreciate, the biomass carbon 132 contains a large amount of carbon and plant nutrients, has a rich pore structure, a large specific surface area and a large number of oxygen-containing active groups on the surface, can adsorb heavy metals and organic pollutants in water flow, and helps to purify water quality.
Those skilled in the art can know that the internal and external average porosity of volcanic rock particles 133 is about 40%, the resistance to water is small, and compared with the similar filter materials, the required filter material amount is small, and the expected filtering target can be achieved; the catalyst has large specific surface area, high aperture ratio and inertness, is beneficial to contact film formation and growth of microorganisms, keeps more microbial mass, and is beneficial to mass transfer process of oxygen, nutrient substances and waste generated by metabolism required in the metabolic process of the microorganisms; the surface of the volcanic rock particles 133 has positive charges, which is favorable for microorganism fixation and growth, has strong hydrophilicity, and has a large amount of attached biological film and high speed, thereby being favorable for purifying water quality.
As will be appreciated by those skilled in the art, the medium and coarse sand 134 is effective in retaining and removing suspended substances, organic substances, colloidal particles, chlorine, odor, and a portion of heavy metal ions from the water stream, thereby helping to purify the water.
As will be appreciated by those skilled in the art, zeolite 135 has unique adsorption, sieving, anion and cation exchange and catalytic properties due to the large number of pore sizes, uniform tubular channels and pores of large internal surface area within. The water purifier can absorb ammoniacal nitrogen, organic matters and heavy metal ions in water, can effectively reduce the toxicity of hydrogen sulfide in water, adjust the pH value, increase dissolved oxygen in water, provide sufficient carbon for phytoplankton growth, improve the photosynthesis intensity of water, and is beneficial to purifying water quality.
Specifically, the polyurethane particles 131 are preferably wrapped with geotextile and secured in the purification chamber 11 with a steel wire mesh.
Through adopting above-mentioned technical scheme, rivers flow from top to bottom, after polyurethane granule 131, living beings carbon 132, volcanic rock grain 133, well coarse sand 134 and zeolite 135 in proper order, under the degradation effect of the microorganism that adheres to on above-mentioned material and its physico-adsorption's effect, can carry out multiple purification to rivers, promote the purifying effect of purification module to rivers.
As an alternative implementation manner of this embodiment, the purification module further includes a water reservoir 3, a lift pump 4, and a water storage area 500, where the water reservoir 3 is communicated with the purification module disposed at the upper end of the slope 300, and the water storage area 500 is communicated with the purification module disposed at the lower end of the slope 300, the water reservoir 3 is communicated with the purification module 1 through a communication port 37, a rain grate 31 for supplying water into the water reservoir 3 is disposed on the water reservoir 3, a water outlet 32 is also disposed on the water reservoir 3, a water inlet 41 is disposed in the water storage area 500, the lift pump 4 is communicated with the water inlet 41 and the water outlet 32, and the lift pump 4 is used for pumping water in the water storage area 500 into the water reservoir 3.
It will be appreciated that the lift pump 4 in this embodiment is preferably located on the slope 300 rather than within the water storage area 500. On the one hand, when the lifting pump 4 is arranged in the water storage area 500, the problem that the pump body is blocked due to the fact that solid substances such as sediment are easily sucked into the pump body due to overlarge suction force can be solved; on the other hand, if the lift pump 4 is disposed in the water storage area 500, when the water level in the water storage area 500 is high, it is inconvenient for the subsequent maintenance personnel to inspect and maintain the lift pump 4; meanwhile, when the water storage area 500 is a river channel, water flow in the water storage area 500 flows, so that the fixed installation of the lifting pump 4 is inconvenient. The lift pump 4 in this embodiment is preferably disposed on the slope 300, so that the lift pump 4 is convenient for fixing and mounting, and also convenient for subsequent maintenance personnel to periodically inspect and maintain the lift pump 4, or for replacing and maintaining the lift pump 4 when the lift pump 4 is damaged.
As can be appreciated, the water flow purified by the purification module 100 flows into the water storage area 500 again for each round, so that the water quality of the water stored in the water storage area 500 is improved, and the water quality of the water stored in the water storage area 500 is continuously improved. The lift pump 4 can pump the water flow in the water storage area 500 into the water storage tank 3, and the water flow in the water storage tank 3 can pass through each purification module of the purification module 100 step by step under the action of gravity and finally be discharged into the water storage area 500, so that a water circulation purification system is formed.
Specifically, the water inlet 41 should be provided below the water line of the water storage area 500; more specifically, the water inlet 41 in this embodiment is preferably disposed at the bottom of the water storage area 500, and the water inlet 41 is directed upward, so that the possibility that the lift pump 4 sucks mud at the bottom of the river channel can be effectively reduced.
In some embodiments, a water pump chamber 42 is further provided on the slope 300, the water pump chamber 42 is used for placing and installing the lift pump 4, a gate 36 is provided between the lift pump 4 and the water outlet 32, and the gate 36 can control on-off of the water outlet 32, so as to control the water injection amount in the reservoir 3.
Through adopting above-mentioned technical scheme, elevator pump 4 can pump the rivers in the water storage region 500 to the cistern 3 in, and the rivers in the cistern 3 discharge to the water storage region 500 after purifying through purification module 100 under the effect of gravity again, constitute a hydrologic cycle clean system. The water circulation purification system can realize the repeated purification of water flow in the water storage area 500, and the purification effect of the water flow is improved. Meanwhile, the water circulation purification system can be started on a sunny day, so that the purification module 100 is prevented from being idle on the sunny day, and the applicability of the purification module 100 in different weather environments is improved.
As an alternative implementation manner of this embodiment, in some embodiments, the lift pump 4 is a solar lift pump, and the slope 200 is further provided with a solar cell 81 electrically connected to the solar lift pump and a street lamp 8 electrically connected to the solar cell 81, where the solar cell 81 is used to supply power to the solar lift pump 4 and the street lamp 8.
It will be appreciated that the solar cell 81 may be provided on the street lamp 8 or may be provided on the ground separately. The solar cell 81 may operate in a sunny environment (i.e., sunny), and the electricity generated by the operation may power the street lamp 8 and the solar lift pump.
It will be appreciated that the solar cell 81 may be replaced with other power generation devices such as wind turbines.
In some embodiments, the water reservoir 3 is clamped with a slag blocking basket 33, the slag blocking basket 33 is positioned below the rainwater grate 31, and a slag box 34 is arranged at the bottom of the water reservoir 3.
In some embodiments, as shown in fig. 8, a planting basket 51 is fastened to the water reservoir 3, and the planting basket 51 is fastened to the water reservoir 3 by a fastener 511.
It will be appreciated that the sediment basket 33 may intercept a portion of the particles (i.e. particles having a particle size greater than the mesh size of the sediment basket 33) in the water flowing from the rain grate 31 into the reservoir 3. A portion of the particles having a size smaller than the mesh size of the sediment basket 33 will sink under gravity to the bottom of the water reservoir 3 and the sediment box 34 may collect the portion of the particles.
Through adopting above-mentioned technical scheme, solar cell 81 is used for supplying power for solar lift pump and street lamp 8, and the street lamp can provide the illumination, and solar lift pump can pump the rivers in the water storage area 500 to in the cistern 3, realizes water cycle. The solar power generation technology is an environment-friendly power generation technology, and has no ecological pollution. The slag blocking basket 33 can intercept part of large-particle pollutants, lighten the pressure of the purification process of the purification module, and is clamped on the water reservoir 3 to be convenient for cleaning and replacement. The sediment box 34 can collect the pollutants sunk into the bottom of the reservoir 3, so as to facilitate the subsequent cleaning of the reservoir 3.
As an alternative implementation manner of this embodiment, the purifying medium 13 is provided with a planting soil layer 5, the planting soil layer 5 includes a planting basket 51 clamped on the purifying module 1, planting soil 52 placed in the planting basket 51, and plants 53 planted on the planting soil 52, and the plants 53 include at least one of submerged plants, herbaceous plants, small shrubs, wet plants, emergent aquatic plants and floating plants.
In some embodiments, the planting soil layer 5 is further provided with a cobble layer 54, the cobble layer 54 is formed by paving a plurality of cobbles, which can stabilize the planting soil 52 in the planting soil layer 5, prevent the planting soil 52 from being impacted and taken away by water flow, and make the planting soil layer 5 more beautiful.
In some embodiments, a hand strap may be provided on the basket 51 to facilitate lifting of the basket 51 by a user.
Those skilled in the art will appreciate that submerged plants will absorb nutrients in the body of water, including nitrogen, phosphorus, etc., during growth, helping to clean the water stream. Specifically, submerged plants include, but are not limited to: goldfish algae, wheel algae, gramineae, sargassum graminifolium, sargassum, and Sargassum horneri.
As known to those skilled in the art, the herb plants have the functions of producing a large amount of oxygen and preventing water and soil loss, and can absorb substances such as nitrogen, phosphorus and the like in water flow, thereby being beneficial to purifying the water flow; and many herbaceous plants are plants with certain ornamental value, and the purification module 100 is placed beside the urban river to help improve the attractiveness of the city. Specifically, herbs include, but are not limited to: stevia rebaudiana, cucurbit, delphinium, chrysanthemum, orchid, lotus, water lily and clivia.
As those skilled in the art will appreciate, the small shrubs can also absorb nitrogen, phosphorus and other substances in the water flow, which helps to purify the water flow; the small shrubs can be planted by single plants and can be clustered to form an integral landscape effect by the ornamental characteristics of the small shrubs, can be used for urban landscaping and urban greening, and has higher ornamental value. Specifically, the shrubs include, but are not limited to: nandina domestica, murraya paniculata, gardenia, azalea, and Laurel.
As will be appreciated by those skilled in the art, the wet plant may absorb nitrogen, phosphorus, etc. from the water stream and facilitate purification of the water stream. Specifically, the wet-grown plants include, but are not limited to: fern, epiphytic orchid, taro, begonia, rice, rush, lobelia chinensis, and ranunculus japonicus.
As those skilled in the art will appreciate, emerging plants can also absorb nitrogen, phosphorus and other substances in water flow, which is helpful for purifying water flow; specifically, emergent aquatic plants include, but are not limited to: reed, cattail, water chestnut, lotus, cress, wild rice stem, lotus, typha, arrowhead, reed and the like.
Those skilled in the art will appreciate that the floating plants can also absorb nitrogen, phosphorus and other substances in the water flow, which is helpful for purifying the water flow; specifically, the floating plants include, but are not limited to: duckweed, water lettuce, water lily, water hyacinth, water lily, pagodatree leaf duckweed, royal lotus, water lily, water chestnut, etc.
Furthermore, the embodiment can hierarchically and preferentially select proper vegetation combinations according to the local ecology and climate conditions of the installation site to construct a near-natural ecological system.
As a preferred embodiment, as shown in the third embodiment of fig. 4, a plurality of purification modules 1 are formed in a plurality of stages from top to bottom in the inclined direction of the slope; the multistage purification module is provided with planting soil layers 5 on a plurality of purification modules from top to bottom respectively, and plants 531, herbaceous plants and small shrubs 532, wet plants 533, wet plants and emergent aquatic plants 534, emergent aquatic plants 535 and floating plants 536 for removing nitrogen and phosphorus are planted on a plurality of planting soil layers 5 from top to bottom respectively.
By adopting the technical scheme, the planting basket 51 is clamped on the purification module 1, so that the purification module is convenient to detach and replace; the plants 53 can absorb substances such as nitrogen, phosphorus and the like in the water flow, so as to realize the purification of the water flow; at the same time, the plants 53 have a certain ornamental value, and the purification module 100 with the plants 53 is placed beside the city river to help to improve the beauty of the city.
As an alternative to this embodiment, in some embodiments, the purification module 100 further includes a foot lock anchor 6 fixedly connected to the purification module 100, where the foot lock anchor 6 secures each purification module 1 to the slope 200.
In some embodiments, the purification module 100 further comprises a rock masonry 7 and a water storage area 500 in communication with the purification module 1 provided at the lower end of the slope 300, the rock masonry 7 being provided on the surface of the purification module 100 adjacent to the water storage area 500. Specifically, the rock masonry 7 is composed of a plurality of large grain size rocks fixed by steel wire mesh. The rock masonry 7 is arranged in the water body, which can provide a better living space for aquatic organisms. To further enhance the stability of the purification module, a concrete cushion 2 may also be laid at the bottom of the purification module 1 and the rock masonry 7.
Through adopting above-mentioned technical scheme, lock foot stock 6 can be fixed each purification module 1 on domatic 200, and rock brickwork 7 also helps stabilizing purification module 1 on domatic 300, provides better living space for the aquatic creature simultaneously, promotes purification module's overall stability.
As an alternative implementation of this embodiment, an overflow member 151 is disposed at one side of the top of the overflow channel 15 of each purification module 1, and the overflow member 151 is preferably a quarter-circle member, so that the overflowed water flow can form a parabolic waterfall through the arc surface of the overflow member 151, and the water flow effect on the purification module 100 is more attractive.
The present embodiment also provides an ecological revetment 200, which has any one of the purification modules 100 in the foregoing embodiments, and it should be noted that the purification module 100 has the beneficial effects of the purification module 100 in any one of the foregoing embodiments, and a plurality of the purification modules 100 are disposed on one side of the river bank or on two opposite sides of the river bank and are disposed in parallel along the length direction of the river bank.
It will be appreciated that the plurality of purification modules may be disposed along one side of the river bank or along opposite sides of the river bank, and the user may choose from different actual needs.
In some embodiments, the same-level purification modules on the same side of the river bank are consistent in height, so that the ecological bank protection overall has higher aesthetic feeling.
It can be appreciated that the ecological revetment provided in this embodiment is disposed on the slope 300, the purification module is disposed at the upper end of the slope 300 and near the road 400, and the purification module is disposed at the lower end of the slope 300 and near the river. The surface source water flow on the road 400 can flow into the upper end of the purification module and is discharged into the river after being purified by the purification module.
Specifically, the purification modules of the purification modules can be communicated or not; more specifically, as in the embodiment shown in fig. 8, in this embodiment, it is preferable that the reservoirs 3 of the respective purification modules are communicated through the communicating pipe 35; it will be appreciated that the lift pump 4 may be provided on each of the purification modules, but in order to save manufacturing costs, it is preferred in this embodiment to share one lift pump 4 between every 3 purification modules.
By adopting the technical scheme, the ecological bank protection 200 is composed of a plurality of modularized purification modules 100, is convenient to assemble and disassemble, can fully utilize the underground space and the vertical space on the slope surface 300, and is customized according to the environment of a construction site compared with the ecological bank protection integrally formed in the related technology, and the ecological bank protection 200 provided by the embodiment has the advantages that the transverse occupied area of a single purification module 1 is smaller, the modularized purification modules are more convenient to maintain in the later period, and the maintenance cost is lower; meanwhile, the purification module 100 can be prefabricated in a factory and transported to a construction site for installation, and compared with the ecological bank protection of field construction in the related art, the ecological bank protection 200 provided by the embodiment can save the construction period, simplify the construction process and save the labor cost.
For ease of understanding, the working principle of the present invention will be described by taking the fourth embodiment shown in fig. 5, the fifth embodiment shown in fig. 6, and the embodiment of fig. 7 as preferred embodiments as examples:
as shown in fig. 5, the present embodiment is a schematic flow direction of the water flow of the purification module 100 in the rainy environment, and the arrow direction is the direction of the water flow. In case of rain, rainwater may flow into the purification module 1 from the first partition 141 of the purification module 1, and simultaneously, the surface source water flow on the road may also flow into the purification module 1. Because the first permeate passage 16 has limited capacity for permeate flow, water flows preferentially from the first partition 141 and out from the second partition 142 under the influence of the hydraulic pressure difference, and is purified stepwise, and finally discharged into the river.
As shown in fig. 6, the present embodiment is a schematic flow direction of the water flow of the purification module 100 in a sunny environment, and the arrow direction is the direction of the water flow. At this time, the lifting pump 4 is started, the water flow in the river channel is pumped into the water reservoir 3 by the lifting pump 4, the water flow in the water reservoir 3 is purified step by step through the purification module 1 under the action of gravity, and finally the water flow is discharged into the river channel to form a circulating purification flow path of the water flow.
As shown in fig. 7, the present embodiment is a schematic flow direction of the secondary water flow of the purification module 100, and the arrow direction is the direction of the water flow.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (8)
1. A purification module locates on domatic, its characterized in that includes:
the purification modules are sequentially arranged adjacently along the inclined direction of the slope, each purification module comprises a frame with a purification cavity inside and a purification medium placed in the purification cavity, the vertical upper end of the frame is provided with an opening for water to pass through and communicated with the purification cavity and an overflow channel for communicating two adjacent purification cavities with the opening, and the vertical lower end of the frame is provided with a first permeation channel for communicating two adjacent purification cavities;
the overflow channel is communicated with the first permeation channel, and can overflow water flow at the vertical lower end of the frame;
a partition plate is vertically arranged in the middle of the frame and divides the purification cavity into a first purification unit used for loading a first purification medium and a second purification unit used for loading a second purification medium, and a second permeation channel communicated with the first purification unit and the second purification unit is arranged at the vertical lower end of the partition plate;
The height of the first purifying unit is larger than that of the second purifying unit, and the partition plate divides the opening into a first partition opening for water inflow and a second partition opening for water outflow.
2. The purification module of claim 1, wherein a plurality of the purification modules form a multi-stage purification module from top to bottom in an oblique direction of the slope;
wherein, placed in each level purification module purification medium, purification medium includes polyurethane granule, living beings carbon, volcanic rock grain, well coarse sand and zeolite at least one.
3. The purification module of claim 2, wherein the multi-stage purification module comprises a first stage purification module, a second stage purification module and a third stage purification module which are sequentially arranged from top to bottom, the first stage purification module comprises a third purification unit, a third purification medium in the third purification unit is polyurethane particles, the second stage purification module comprises a fourth purification unit and a fifth purification unit, the fourth purification medium of the fourth purification unit is biomass carbon, the fifth purification medium of the fifth purification unit is volcanic particles, the third stage purification module comprises a sixth purification unit and a seventh purification unit, the sixth purification medium of the sixth purification unit is middlings, and the seventh purification medium of the seventh purification unit is zeolite.
4. The purification module of claim 1, further comprising a reservoir in communication with the purification module at the upper end of the slope, a lift pump, and a water storage area in communication with the purification module at the lower end of the slope, wherein the reservoir is provided with a rain grate for supplying water to flow into the reservoir, the reservoir is further provided with a water outlet, a water inlet is provided in the water storage area, the lift pump is in communication with the water inlet and the water outlet, and the lift pump is used for pumping water in the water storage area into the reservoir.
5. The purification module of claim 4, wherein the lift pump is a solar lift pump, a solar cell electrically connected with the solar lift pump and a street lamp electrically connected with the solar cell are further arranged on the slope, and the solar cell is used for supplying power to the solar lift pump and the street lamp;
and/or the retention basket is clamped on the reservoir, the retention basket is positioned below the rainwater grate, and a sediment box is arranged at the bottom of the reservoir.
6. The purification module of claim 1, wherein the purification medium is provided with a planting soil layer, the planting soil layer comprising a planting basket clamped on the purification module, planting soil placed in the planting basket, and plants planted on the planting soil, the plants comprising at least one of submerged plants, herbaceous plants, small shrubs, wet plants, emergent aquatic plants, and floating plants.
7. The purification module of claim 1, further comprising a foot lock anchor fixedly coupled to the purification module, the foot lock anchor securing each purification module to the slope;
and/or, the purification module further comprises a rock masonry and a water storage area communicated with the purification module and arranged at the lower end of the slope, and the rock masonry is arranged on the surface, close to the water storage area, of the purification module.
8. An ecological bank protection comprising a plurality of purification modules according to any one of claims 1 to 7, wherein the plurality of purification modules are disposed on one side of the river bank or on opposite sides of the river bank and are disposed in parallel along the length direction of the river bank.
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