River channel water transparency improving system based on multi-stage filtration

Abstract

The invention discloses a river channel water body transparency improving system based on multi-stage filtration, and the river channel water body transparency improving system based on multi-stage filtration comprises a barrier region, a settlement region and an algae removal region which are sequentially arranged from front to back along a water body flowing direction, the filter floating island is positioned above the filter dam, and consists of a floating island and a filter screen arranged below the floating island; a base of the settlement area is concave; aquatic plants are planted in the algae removal area; according to the river channel water body transparency improving system based on multi-stage filtration, physical interception of pollutants can be achieved through the barrier area, particulate matter can be settled through the settling area, then filtration and biological purification are conducted through the algae removal area, and the purposes of efficiently removing the pollutants and improving the water body transparency are achieved; in addition, compared with a traditional purification method, the method has lower operation and maintenance cost.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, and in particular to a system for improving the transparency of river water bodies based on multi-stage filtration. Background Art

[0002] Water pollution mainly refers to the phenomenon that pollutants discharged by human activities enter water bodies, causing water quality to deteriorate and its utilization value to decrease or lose. Strictly speaking, there are two types of causes of water pollution: one is caused by human factors, mainly industrial wastewater. In addition, it also includes pollutants in the atmosphere from domestic sewage, agricultural drainage, rainfall leaching, and pollutants that flow into water bodies through rainfall leaching of garbage accumulated on the ground. In addition, there is water pollution caused by natural factors, such as the weathering and hydrolysis of rocks, volcanic eruptions, water erosion of the ground, and precipitation leaching of atmospheric dust. Substances released by organisms (mainly green plants) in the geochemical cycle are all sources of natural pollutants.

[0003] Traditional water purification methods often rely on chemical treatment or single physical interception, which has problems such as high cost, low efficiency and great ecological impact.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a river water transparency improvement system based on multi-stage filtration. The river water transparency improvement system based on multi-stage filtration of the present invention can achieve physical interception of pollutants through the barrier area, and then settle the particulate matter through the sedimentation area, and then filter and biologically purify it through the algae removal area to achieve efficient removal of pollutants and achieve the purpose of improving water transparency.

[0006] In order to achieve the above-mentioned purpose of the present invention, the following technical solutions are adopted:

[0007] The first aspect of the present invention provides a river water transparency enhancement system based on multi-stage filtration, the river water transparency enhancement system based on multi-stage filtration comprises a barrier zone, a sedimentation zone, and an algae removal zone arranged in sequence from front to back along the direction of water flow:

[0008] The barrier area includes a filter dam set up to intercept the river channel, and a filter floating island located above the filter dam, wherein the filter floating island is composed of a floating island and a filter screen set below the floating island;

[0009] The base of the settling zone is configured to be concave;

[0010] Aquatic plants are planted in the algae removal area.

[0011] Preferably, the filter dam is composed of volcanic rocks and gabions.

[0012] Preferably, the cross section of the filter dam is trapezoidal.

[0013] Preferably, the height of the filter dam is 2 / 3 of the depth of the water body.

[0014] Preferably, large algae are grown on the floating islands.

[0015] Preferably, the algae removal area is planted with Potamogeton pectinata, Hydrilla verticillata and Vallisneria salsa in sequence from front to back along the direction of water flow.

[0016] Preferably, the length ratio of the planting areas of the Potamogeton chinensis, Hydrilla verticillata and Vallisneria lappa is (2-4):1:(1-3).

[0017] Preferably, a biofilm floating island is provided at the front end of the algae removal area along the water flow direction, and the biofilm floating island consists of a floating island and a biofilm provided below the floating island.

[0018] Preferably, the front end of the algae removal area along the water flow direction is a slope.

[0019] Compared with the prior art, the beneficial effects of the present invention include at least:

[0020] The river water transparency improvement system based on multi-stage filtration of the present invention can achieve physical interception of pollutants through the barrier area, and then settle the particulate matter through the sedimentation area, and then filter and biologically purify it through the algae removal area, thereby achieving efficient removal of pollutants and achieving the purpose of improving water transparency; in addition, compared with traditional purification methods, the present invention has lower operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0022] Figure 1 This is a schematic structural diagram of a river water transparency enhancement system based on multi-stage filtration according to the present invention;

[0023] In the accompanying drawings,

[0024] 1-barrier zone, 11-filtration dam, 12-biofilm floating island, 13-floating island, 14-biofilm, 15-filtration floating island, 16-filter screen; 2-sedimentation zone; 3-algae removal zone, 31-potamus pectinata, 32-black algae, 33-vallisneria. DETAILED DESCRIPTION

[0025] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only used as examples and cannot be used to limit the scope of protection of the present invention.

[0026] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0027] The embodiment of the present invention provides a river water transparency improvement system based on multi-stage filtration, such as Figure 1 As shown, the river water transparency improvement system based on multi-stage filtration includes a barrier area 1, a sedimentation area 2 and an algae removal area 3 arranged in sequence from front to back along the water flow direction:

[0028] The barrier area includes a filter dam 11 set up to intercept the river channel, and a filter floating island 15 located above the filter dam 11. The filter floating island 15 is composed of a floating island 13 and a filter screen 16 set below the floating island 13.

[0029] The base of the settling area 2 is set to be concave;

[0030] Aquatic plants are planted in the algae removal area 3.

[0031] The river water transparency improvement system based on multi-stage filtration of the present invention can achieve physical interception of pollutants through the barrier area 1, and then can settle the particulate matter through the sedimentation area 2, and then filter and biologically purify it through the algae removal area 3. After the three-stage combined treatment, it can achieve efficient removal of pollutants and achieve the purpose of improving water transparency; in addition, compared with traditional purification methods, the present invention has lower operation and maintenance costs.

[0032] In one embodiment, the filter dam 11 is composed of volcanic rocks and gabions. The volcanic rocks can absorb suspended particles in the water and provide a carrier for nitrifying bacteria in the water, which is conducive to the growth and development of microorganisms, thereby better purifying the water quality.

[0033] In one embodiment, the cross section of the filter dam 11 is trapezoidal.

[0034] By limiting the shape of the filter dam 11, the impact of the water flow can be better alleviated, and the contact area can be increased, thereby achieving a better purification effect.

[0035] In one embodiment, the height of the filter dam 11 is 2 / 3 of the depth of the water body.

[0036] In one embodiment, large algae are planted on the floating island 13. By planting large algae, biological purification of the water body can be achieved.

[0037] In one embodiment, the algae removal area 3 is planted with Potamogeton 31, Hydrilla verticillata 32 and Vallisneria 33 in sequence from front to back along the water flow direction.

[0038] In one embodiment, the length ratio of the planting areas of the Potamogeton pectinata, Hydrilla verticillata, and Vallisneria lappa is (2-4):1:(1-3).

[0039] By selecting aquatic plants and limiting the planting length of different plants according to the water flow rate, the water purification effect can be better achieved.

[0040] In one embodiment, a biofilm floating island 12 is set at the front end of the algae removal area 3 along the water flow direction. The biofilm floating island 12 is composed of a floating island 13 and a biofilm 14 set under the floating island 13; through the setting of the biofilm floating island, physical and biological purification can be achieved, thereby achieving better purification effect.

[0041] In one embodiment, the front end of the algae removal area 3 along the water flow direction is a slope. The setting of the slope can alleviate the impact of the water flow, which is conducive to the sedimentation of pollutants in the water.

[0042] The technical solution of the present invention is further described in detail below through specific embodiments.

[0043] Example 1

[0044] This embodiment is a river water transparency improvement system based on multi-stage filtration, such as Figure 1 As shown, the river water transparency improvement system based on multi-stage filtration includes a barrier area 1, a sedimentation area 2 and an algae removal area 3 arranged in sequence from front to back along the water flow direction:

[0045] The barrier area includes a filter dam 11 set up to intercept the river channel, and a filter floating island 15 located above the filter dam 11;

[0046] The filter floating island 15 is composed of a floating island 13 and a filter screen 16 arranged below the floating island 13;

[0047] The cross section of the filter dam 11 is trapezoidal and is made of volcanic rocks and gabions; the height of the filter dam 11 is 2 / 3 of the depth of the water body;

[0048] Planting large algae on floating island 13;

[0049] The base of the settling area 2 is set to be concave;

[0050] In the algae removal area 3, Potamogeton 31, Hydrilla 32 and Vallisneria 33 are planted in sequence from front to back along the direction of water flow;

[0051] The front end of the algae removal area 3 along the water flow direction is a slope and a biofilm floating island 12 is set at the front end. The biofilm floating island 12 consists of a floating island 13 and a biofilm 14 set below the floating island 13;

[0052] The length ratio of the planting areas of Potamogeton pectinata, Hydrilla verticillata and Vallisneria lappa is 2:1:1.

[0053] Example 2

[0054] This embodiment is a river water transparency improvement system based on multi-stage filtration, such as Figure 1 As shown, the river water transparency improvement system based on multi-stage filtration includes a barrier area 1, a sedimentation area 2 and an algae removal area 3 arranged in sequence from front to back along the water flow direction:

[0055] The barrier area includes a filter dam 11 set up to intercept the river channel, and a filter floating island 15 located above the filter dam 11;

[0056] The filter floating island 15 is composed of a floating island 13 and a filter screen 16 arranged below the floating island 13;

[0057] The cross section of the filter dam 11 is trapezoidal and is made of volcanic rocks and gabions; the height of the filter dam 11 is 2 / 3 of the depth of the water body;

[0058] Planting large algae on floating island 13;

[0059] The base of the settling area 2 is set to be concave;

[0060] In the algae removal area 3, Potamogeton 31, Hydrilla 32 and Vallisneria 33 are planted in sequence from front to back along the direction of water flow;

[0061] The front end of the algae removal area 3 along the water flow direction is a slope and a biofilm floating island 12 is set at the front end. The biofilm floating island 12 consists of a floating island 13 and a biofilm 14 set below the floating island 13;

[0062] The length ratio of the planting areas of Potamogeton pectinata, Hydrilla verticillata and Vallisneria lappa is 4:1:3.

[0063] Example 3

[0064] This embodiment is a river water transparency improvement system based on multi-stage filtration, such as Figure 1 As shown, the river water transparency improvement system based on multi-stage filtration includes a barrier area 1, a sedimentation area 2 and an algae removal area 3 arranged in sequence from front to back along the water flow direction:

[0065] The barrier area includes a filter dam 11 set up to intercept the river channel, and a filter floating island 15 located above the filter dam 11;

[0066] The filter floating island 15 is composed of a floating island 13 and a filter screen 16 arranged below the floating island 13;

[0067] The cross section of the filter dam 11 is trapezoidal and is made of volcanic rocks and gabions; the height of the filter dam 11 is 2 / 3 of the depth of the water body;

[0068] Planting large algae on floating island 13;

[0069] The base of the settling area 2 is set to be concave;

[0070] In the algae removal area 3, Potamogeton 31, Hydrilla 32 and Vallisneria 33 are planted in sequence from front to back along the direction of water flow;

[0071] The front end of the algae removal area 3 along the water flow direction is a slope and a biofilm floating island 12 is set at the front end. The biofilm floating island 12 consists of a floating island 13 and a biofilm 14 set below the floating island 13;

[0072] The length ratio of the planting areas of Potamogeton pectinata, Hydrilla verticillata and Vallisneria lappa is 3:1:2.

[0073] Experimental example

[0074] The water flow rate is 1.5m 3 / s as an example, the river water transparency improvement system based on multi-stage filtration of Example 3 is used to treat the water body, wherein the length of the algae removal zone is 600m;

[0075] The water quality before and after treatment is shown in Table 1;

[0076] Table 1

[0077]

[0078]

[0079] From Table 1 we can see that:

[0080] The lifting system of this application can effectively reduce COD, TN, TP, and NH3-N in water bodies and improve water transparency.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A river water transparency improvement system based on multi-stage filtration, characterized in that: The river water transparency improvement system based on multi-stage filtration includes a barrier area, a sedimentation area and an algae removal area arranged in sequence from front to back along the water flow direction: The barrier area includes a filter dam set up to intercept the river channel, and a filter floating island located above the filter dam, wherein the filter floating island is composed of a floating island and a filter screen set below the floating island; The base of the settling zone is configured to be concave; Aquatic plants are planted in the algae removal area.

2. The river water transparency improvement system based on multi-stage filtration according to claim 1 is characterized in that: The filter dam is composed of volcanic rocks and gabions.

3. The river water transparency improvement system based on multi-stage filtration according to claim 1 is characterized in that: The cross section of the filter dam is trapezoidal.

4. The river water transparency improvement system based on multi-stage filtration according to claim 1 is characterized in that: The height of the filter dam is 2 / 3 of the depth of the water body.

5. The river water transparency improvement system based on multi-stage filtration according to claim 1 is characterized in that: Large algae are grown on the floating islands.

6. The river water transparency improvement system based on multi-stage filtration according to claim 1 is characterized in that: The algae removal area is planted with Potamogeton serrata, Hydrilla verticillata and Vallisneria salsa in sequence from front to back along the flow direction of the water body.

7. The river water transparency improvement system based on multi-stage filtration according to claim 1 is characterized in that: The planting area length ratio of the Potamogeton argentea, Hydrilla verticillata and Vallisneria lappa is (2-4):1:(1-3).

8. The river water transparency improvement system based on multi-stage filtration according to claim 1 is characterized in that: A biofilm floating island is arranged at the front end of the algae removal area along the water flow direction, and the biofilm floating island consists of a floating island and a biofilm arranged below the floating island.

9. The river water transparency improvement system based on multi-stage filtration according to claim 1 is characterized in that: The front end of the algae removal area along the water flow direction is a slope.

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