Ecological sewage purification method and interception device thereof

By planting aquatic plants and algae in the river channel, combined with artificial floating island wetlands and interception devices, a multi-layered purification system is formed, which solves the problem of purifying heavy metals and domestic waste in urban rivers, and achieves effective water quality improvement and resource utilization.

CN117125837BActive Publication Date: 2025-12-12NANJING FORESTRY UNIV
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Patent Information

Application Number
CN202311346442.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-10-18
Publication Date
2025-12-12
Estimated Expiration
2043-10-18

AI Technical Summary

Technical Problem

Existing technologies have limited effectiveness in treating heavy metals and purifying domestic waste in urban waterways, and cannot effectively solve the complex pollution problems in urban water ecosystems.

Method used

An ecological wastewater purification method is adopted, which involves planting aquatic plants and algae in residential and industrial waterways, combined with artificial floating wetlands and interception devices. The purification effect of aquatic plants and algae is utilized, along with the purification functions of lotus, duckweed and water hyacinth, to form a multi-layered purification system.

Benefits of technology

It effectively intercepts and purifies heavy metals and domestic waste, reduces eutrophication of water bodies, and provides a good ecological environment. At the same time, duckweed and water hyacinth can be used as animal feed, reducing the burden of subsequent treatment.

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Abstract

The application discloses an ecological sewage purification method and an intercepting device thereof, which comprises a first resident river channel, aquatic plants are planted in the first resident river channel, the aquatic plants can be spirodela alterniflora, water onion and the like, the first resident river channel is communicated with a plurality of first branch channels, a sewage treatment plant is arranged at a downstream outlet of the first resident river channel and is communicated with one end, the other end of the sewage treatment plant is communicated with a second industrial river channel, and the intercepting device is arranged at the communication position of the first resident river channel and the plurality of first branch channels, so that the problems of the complex urban water ecology at the present stage, the multiple harmful substances in the river channel, such as lead, mercury, silver and other heavy metal harmful substances, and the garbage treatment in the river channel are effectively solved.
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Description

TECHNICAL FIELD

[0001] The present application mainly relates to the technical field of sewage purification, in particular to an ecological sewage purification method and an interception device thereof. BACKGROUND

[0002] Water pollution is a large category in environmental engineering, and there are many methods for treatment, mainly physical, chemical and biological methods. The reasons are: 1. China's water environment is facing many pressures such as water pollution, water resource shortage and flood disaster. 2. The regional economic development and the regional environmental capacity are not compatible, which is also an important reason for water environmental pollution. 3. The influence of natural factors to some extent aggravates the deterioration of water environment problems, increases the difficulty of water pollution prevention and control, and the increasing garbage floating on the water surface aggravates the water pollution, which has become a major threat to human survival safety, and has become a major obstacle to human health, economy and social sustainable development.

[0003] Chinese patent number CN115259390A discloses an ecological sewage purification circulation system, but this method only absorbs mineral ions such as nitrogen and phosphorus in sewage and purifies water quality, and can only be used for agricultural land. For the present stage of complex urban water ecology, the river contains many harmful substances such as lead, mercury, silver and other heavy metal harmful substances, including the treatment of household garbage in the river. The purification effect of the above-mentioned method is limited, so a kind of ecological sewage purification method and an interception device are needed to solve the above-mentioned problems. SUMMARY

[0004] The technical solution of the present application solves the technical problem that the existing technical solution is too single, and provides a solution significantly different from the existing technology, mainly providing an ecological sewage purification method and an interception device, to solve the technical problem of complex urban water ecology at the present stage, and the river contains many harmful substances such as lead, mercury, silver and other heavy metal harmful substances, including the treatment of household garbage in the river.

[0005] The technical solution adopted by the present application to solve the above technical problems is: an ecological sewage purification method and an interception device, comprising a first resident river, water plants are planted in the first resident river, the water plants can be spirodela, water chives, etc., the first resident river is communicated with a plurality of first branch channels, a sewage treatment plant is arranged at the downstream outlet of the first resident river and communicated with one end, the other end of the sewage treatment plant is communicated with a second industrial river, and an interception device is arranged at the communication part of the first resident river and the plurality of first branch channels.

[0006] Further improvement, the first resident river also sets up algae plants at the same time, and the water plants and the algae plants play the role of mutual inhibition.

[0007] Preferably, the downstream position of the first resident river is provided with an artificial floating island wetland, which can be a park.

[0008] Preferably, the intercepting device comprises symmetrically arranged base blocks, the bottom of the base block is connected with one end of a plurality of cylinders, the other end of the cylinder is tapered, the other end of the cylinder is fixedly connected with the bottom of the first branch channel, the top of the base block is fixedly connected with one end of two left and right symmetrically arranged connecting rods, the two ends of the two symmetrically arranged connecting rods are slidably connected with the inner circle of two sleeves, and the outer circle of the sleeve is fixedly connected with the blocking filter screen.

[0009] Further improvement, the blocking filter screen is V-shaped.

[0010] Preferably, the second industrial river is planted with degrading plants, which can be lotus, duckweed and water hyacinth, the lotus is propagated by division and sowing, 3-5 plants per square meter, and the duckweed and water hyacinth are planted between the lotus by sowing.

[0011] Preferably, the second industrial river is communicated with a plurality of second branch channels, the water quality detection device is arranged in the second branch channel, the downstream outlet of the second industrial river is communicated with one end of a wastewater treatment plant, and the other end of the wastewater treatment plant is communicated with a third agricultural river.

[0012] Preferably, the third agricultural river is communicated with a plurality of ponds, and aquatic plants and degrading plants are planted in the ponds and the third agricultural river.

[0013] Compared with the prior art, the beneficial effects of the present application are that because the nitrogen and phosphorus content of domestic sewage is high, it is easy to produce foul odor under the action of anaerobic bacteria, so the removal effect of nitrogen and phosphorus is best by using spirogyra, water onion. In addition, the algal plants can also absorb and remove nutrients such as phosphorus and nitrogen in water, thereby effectively preventing water eutrophication, and can play a mutual inhibition effect.

[0014] At the same time, through lotus, duckweed, the lotus is propagated by division and sowing, 3-5 plants per square meter, and the duckweed and water hyacinth are planted between the lotus by sowing. Because duckweed needs sufficient sunlight, the above-mentioned planting method can provide a good growth environment for duckweed. Under suitable conditions, one hectare of water hyacinth plants can absorb the nitrogen and phosphorus elements discharged by 800 people in one day, and can remove harmful substances such as lead, mercury and silver from sewage within 24 hours, thereby playing an important role in purifying industrial wastewater. At the same time, water hyacinth and duckweed contain rich crude fat and crude fiber and other substances, and can also be used as feed for chickens, ducks, geese and other animals.

[0015] The present application will be explained in detail in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the ecological structure of the present application;

[0017] Figure 2 is a schematic diagram of the structure of the intercepting device in the present application;

[0018] BRIEF DESCRIPTION OF DRAWINGS: 1 - first residential river, 11 - aquatic plants, 12 - first branch, 13 - intercepting device, 131 - base block, 132 - connecting rod, 133 - sleeve, 134 - blocking filter screen, 14 - artificial floating island wetland, 2 - second industrial river, 21 - degrading plants, 22 - second branch, 23 - water quality detection device, 3 - third agricultural and pastoral river, 4 - pond, 5 - sewage treatment plant, 6 - wastewater treatment plant. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings, in which several embodiments of the present application are given, but the present application can be realized in different forms and is not limited to the embodiments described herein, on the contrary, these embodiments are provided in order to make the disclosed content of the present application more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be a middle element, and when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be a middle element, the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs, the terms used herein in the specification are for the purpose of describing specific embodiments and are not intended to limit the present application, the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0022] Please refer to the accompanying drawings Figure 1The application discloses an ecological sewage purification method and an intercepting device thereof, characterized in that: a first resident river channel (1) is internally planted with aquatic plants (11), the aquatic plants (11) can be spartina patens, water chives and the like, the first resident river channel (1) is communicated with a plurality of first branch channels (12), a sewage treatment plant (5) is arranged at a downstream outlet of the first resident river channel (1) and communicated with one end, the sewage treatment plant (5) is communicated with a second industrial river channel (2) at the other end, and the first resident river channel (1) is arranged with an intercepting device (13) at a communication position of the first resident river channel (1) and the plurality of first branch channels (12), since domestic sewage has high nitrogen and phosphorus contents and is prone to produce stench under the action of anaerobic bacteria, the spartina patens and water chives have the best nitrogen and phosphorus removal effect, since the first branch channels (12) are staggered with the residential area, in order to prevent garbage from being discharged, the intercepting device (13) can effectively intercept substantial domestic garbage.

[0023] Further improvement, the first resident river channel (1) is internally simultaneously arranged with algal plants, and the aquatic plants (11) and the algal plants play a mutual inhibition role, the algal plants can absorb organic matter and inorganic matter in water, degrade harmful substances and have very good water purification effect in the growth process. In addition, the algal plants can absorb and remove nutrients such as phosphorus and nitrogen in water, thereby effectively preventing water eutrophication.

[0024] The first resident river channel (1) is arranged with an artificial floating island wetland (14) at a downstream position, the artificial floating island wetland (14) can be a park, the artificial floating island (14) is planted with reeds, the reed is one of the most commonly used plants in the artificial wetland system, can strengthen and maintain the transmission of water in the wetland, absorption, decomposition of pollutants and heavy metal ions in water and has a strong purification effect on sewage, and provides a habitat for microorganisms and birds.

[0025] Further improvement, the blocking filter screen (134) is V-shaped, the V-shaped blocking filter screen (134) can cause substantial garbage to be gathered to a middle position, thereby facilitating subsequent salvage and cleaning.

[0026] The second industrial river channel (2) is planted with degradation plants (21), which can be lotus, duckweed, and the lotus is propagated by division, 3-5 plants per square meter, and the duckweed is planted by sowing between the lotuses, since the duckweed needs sufficient sunlight, the above-mentioned planting method can provide a good growth environment for the duckweed, and under suitable conditions, one hectare of water hyacinth can absorb 800 people's nitrogen and phosphorus elements in one day, and can remove harmful substances such as lead, mercury and silver from the sewage within 24 hours, thereby playing an important role in purifying industrial wastewater, and the water hyacinth and duckweed contain rich crude fat and crude fiber and other substances, and can also be used as feed for chickens, ducks, geese and other animals.

[0027] The second industrial river channel (2) is communicated with a plurality of second branch channels (22), the water quality detection device (23) is arranged in the second branch channel (22), the downstream outlet of the second industrial river channel (2) is communicated with one end of the wastewater treatment plant (6), the other end of the wastewater treatment plant (6) is communicated with the third agricultural and pastoral river channel, and finally treated by the wastewater treatment plant 6, so that the water quality is further improved, and the degradation plants 21 are purified in advance, thereby reducing the workload of the wastewater treatment plant 6.

[0028] The third agricultural and pastoral river channel (3) is communicated with a plurality of ponds (4), the pond (4) is planted with aquatic plants 11 and degradation plants (21) in the third agricultural and pastoral river channel, and finally the water in the pond 4 can be used for irrigation of agriculture through natural degradation of the pond 4 and purification of the aquatic plants 11 and the degradation plants (21).

[0029] Please refer to the accompanying drawings Figure 2 The intercepting device (13) comprises symmetrically arranged base blocks (131), the bottom of the base block (131) is connected with a plurality of cylinders at one end, the other end of the cylinder is tapered, the other end of the cylinder is connected and fixed with the bottom of the first branch channel (12), the top of the base block (131) is fixedly connected with one end of two left and right symmetrically arranged connecting rods (132), the two ends of the two symmetrically arranged connecting rods (132) are slidably connected with the inner circle of two sleeves (133), and the outer circle of the sleeve (133) is fixedly connected with the blocking filter screen (134). By arranging two sets of connecting rods 132, the blocking filter screen (134) can be arranged alternately, so that the blocking filter screen (134) can be cleaned.

[0030] The above-mentioned exemplary description of the application is described with reference to the accompanying drawings, and it is obvious that the specific implementation of the application is not limited by the above-mentioned method. As long as the method concept and technical scheme of the application are used for such non-essential improvement, or the concept and technical scheme of the application are directly applied to other occasions without improvement, they are within the protection scope of the application.

Claims

1. An ecological wastewater purification method and its interception device, characterized in that: The first residential river (1) is planted with aquatic plants (11), which are loosestrife and water onion. The first residential river (1) is connected to multiple first branch channels (12). A sewage treatment plant (5) is set up at the downstream end of the first residential river (1) and connected to one end. The other end of the sewage treatment plant (5) is connected to the second industrial river (2). An interception device (13) is set up at the connection between the first residential river (1) and multiple first branch channels (12). The interception device (13) includes symmetrically arranged base blocks (131). The bottom of the base blocks (131) is connected to one end of multiple cylinders. The other end of the cylinders is conical and is fixedly connected to the bottom of the first branch channel (12). The top of the base blocks (131) is fixedly connected to one end of two symmetrically arranged connecting rods (132). The two ends of the two symmetrical connecting rods (132) are slidably connected to the inner rings of two sleeves (133). The outer ring of the sleeves (133) is fixedly connected to the barrier filter (134). The barrier filter (134) is V-shaped. Algae are also planted in the first residential river channel (1), and the aquatic plants (11) and algae play a mutual inhibitory role. Degradable plants (21) are planted in the second industrial river channel (2). The degradable plants (21) are lotus, duckweed and water hyacinth. The second industrial waterway (2) is connected to multiple second branch channels (22), and a water quality testing device (23) is installed in the second branch channels (22). The downstream outlet of the second industrial waterway (2) is connected to one end of a wastewater treatment plant (6), and the other end of the wastewater treatment plant (6) is connected to a third pastoral waterway. It also includes a third agricultural and pastoral waterway (3), which is connected to multiple ponds (4). Aquatic plants (11) and degradable plants (21) are planted in the ponds (4) and the third pastoral waterway.

2. The ecological wastewater purification method and its interception device according to claim 1, characterized in that: An artificial floating island wetland (14) is set up downstream of the first residential river channel (1), and the artificial floating island wetland (14) is a park.

3. The ecological wastewater purification method and its interception device according to claim 1, characterized in that: Lotus plants are propagated by division and sowing, with 3-5 plants per square meter, spaced 2-3 meters apart. Duckweed and water hyacinth are planted between the lotus plants per square meter.

Citation Information

Patent Citations

  • Ecological sewage purification circulating system

    CN115259390A

  • Composite pollution type dead-end branch river comprehensive treatment system

    CN109851047A