Sewage treatment system capable of enhancing purification effect

Abstract

The utility model discloses a sewage treatment system capable of enhancing a purification effect. The sewage treatment system comprises an aerator, an ecological floating bed and an ecological sinking bed, the number of the ecological floating beds is not less than two, the plurality of ecological floating beds are uniformly arranged around the aeration machine, the ecological sinking bed is arranged below the aeration machine, and the aeration machine is respectively connected with the ecological floating beds and the ecological sinking bed through connecting ropes. According to the utility model, the limitation of the prior art for purifying the water quality of the micro-polluted water body with low transparency, deeper water level or larger water level change is solved, the aeration reoxygenation technology enables the water body with poor hydrodynamic conditions to form running water circulation, the self-purification capacity of the water body is improved, and the ecological floating bed purifies the water quality on the surface and shallow layer of the water body; the ecological sinking bed purifies the water below the water body, and the three are effectively combined to form a solar aeration system for enhancing the purification effect, so that the ecological effect and the purification function of the solar aeration system are greatly improved, and meanwhile, a beautifying function is considered.

Description

Technical Field

[0001] This utility model belongs to the field of water treatment technology, specifically to a wastewater treatment system that enhances purification effects. Background Technology

[0002] In recent years, with rapid economic development and accelerated urbanization, rivers, lakes, and other surface water bodies have become collection points for various types of sewage, leading to increasingly severe pollution that far exceeds the self-purification capacity of these water bodies. Many rivers and lakes are experiencing eutrophication, reduced transparency, and severe degradation of their aquatic ecosystems, even becoming black and odorous water bodies. In response to this situation, many countries and regions have adopted various methods for the treatment and restoration of rivers and lakes, primarily physical, chemical, and biological-ecological methods. Among these, the biological-ecological method is widely used due to its lower cost, better restoration effects, low or no energy consumption, low operating costs, and closer resemblance to nature. The biological-ecological method mainly includes microbial enhancement technology, aeration and reoxygenation technology, biofilm remediation technology, constructed wetland technology, ecological floating bed technology, and ecological submerged bed technology.

[0003] Microbial enhancement technology generally employs two methods: inoculation and the addition of microbial growth promoters. Inoculation involves adding highly efficient bacterial strains, such as nitrifying bacteria, photosynthetic bacteria, and organic pollutant-degrading bacteria, specifically selected for different pollutants present in slightly polluted water bodies, to remove pollutants and purify the water. Adding microbial growth promoters utilizes the added microorganisms to awaken or activate existing pollutant-degrading microorganisms in the water body, thereby fully utilizing their ability to degrade pollutants and eliminating pollutants and black / odorous water. Adding microbial growth promoters offers better ecological safety compared to inoculation.

[0004] Aeration and reoxygenation technology, based on the oxygen deficiency characteristics of polluted rivers and lakes, utilizes natural waterfalls (overflow weirs, dams, etc.) or artificial aeration to reoxygenate the water, enhancing water turbulence and promoting the exchange and mixing of oxygen-rich upper layers with oxygen-poor lower layers. This increases dissolved oxygen levels, ensuring the water's self-purification process remains aerobic, inhibiting the release of nitrogen and phosphorus from sediments, and preventing black and odorous water. It also restores and enhances the activity of aerobic microorganisms in the water, purifying pollutants and thus improving river and lake water quality. Aeration and reoxygenation technology boasts advantages such as high effectiveness, simple equipment, convenient operation, flexibility, safety, low investment, wide adaptability, and no harm to aquatic ecosystems. However, it has disadvantages, including poor effectiveness in removing organic matter and nutrients from water.

[0005] Biofilm remediation technology essentially enhances the biological processes occurring in natural rivers. It uses natural materials (such as pebbles, gravel, and natural riverbeds) or synthetic materials (such as fiber fillers and plastics) as carriers, allowing microbial communities to attach to the carrier surface and form a film. These microorganisms then absorb organic matter from the wastewater as nutrients, thus purifying the wastewater. Biofilm remediation technology has advantages such as strong adaptability, stable treatment effects, convenient operation, favorable conditions for microbial growth, and low sludge production, and has been widely used in my country. Currently, biofilm remediation technologies used for river purification mainly include biological contact oxidation, biological filters, and biological rotating discs. However, this method is only suitable for rivers with slow water flow and is costly.

[0006] Constructed wetland technology artificially simulates natural wetlands to create ecosystems similar to marshes. It primarily utilizes the synergistic physical, chemical, and biological interactions of soil, gravel, plants, and microorganisms to achieve water purification and environmental restoration. Its mechanisms include adsorption, filtration, sedimentation, oxidation-reduction, microbial decomposition, and transformation. Constructed wetlands can be categorized into three main types based on water flow patterns: surface flow, horizontal subsurface flow, and vertical subsurface flow. Constructed wetlands offer advantages such as lower construction and operating costs, ease of maintenance, and good ecological functions. However, stable operation of constructed wetlands requires a certain period, occupies a large area, and is significantly affected by environmental factors.

[0007] Ecological floating bed technology uses easily floating materials as a substrate or carrier to plant aquatic plants on the surface of eutrophic water bodies. Through the absorption or adsorption of nitrogen, phosphorus, and organic pollutants by the plant roots, it reduces water quality—a biological control method. Compared to other water treatment processes, ecological floating bed technology is closer to nature and has better economic benefits. The plants grown on the floating beds beautify the environment, blending seamlessly with the surroundings and becoming new landscape highlights. Ecological floating beds have low construction and operating costs, and are convenient and easy to operate and maintain after construction, resulting in low operating expenses.

[0008] The ecological submerged bed technology mainly relies on the adsorption and degradation of nutrients by submerged plants planted on the bed. This reduces the content of nutrients in the water and increases water transparency, creating light and nutrient conditions for the submerged plants, thereby guiding their natural restoration. The roots and stems of submerged plants can directly absorb nitrogen, phosphorus, and other substances from the water. Through photosynthesis, they can increase dissolved oxygen in the water, providing habitats for aquatic animals to survive and lay eggs. The tender parts can be consumed by aquatic animals and can serve as carriers for microorganisms, thereby improving the water's purification capacity and the overall aquatic ecosystem.

[0009] With the increasingly serious water pollution problem, the above-mentioned single sewage treatment technologies can no longer meet the needs of environmental pollution. Especially for water bodies with low transparency, deep water levels, or large water level fluctuations, none of the above-mentioned biological-ecological methods can be properly treated. These technologies all have various problems, such as high investment in microbial enhancement technology, poor purification effect of aeration and reoxygenation technology, difficulty in biofilm formation in biofilm remediation technology, lack of suitable construction sites for artificial wetlands, poor ecological purification effect of ecological floating beds in deep water areas, and limited growth of submerged plants in ecological sedimentary beds.

[0010] Therefore, in order to address the problem of slightly polluted water bodies with low transparency, deep water levels, or large water level fluctuations, it is necessary to design a new slightly polluted water body treatment system. Utility Model Content

[0011] In view of this, the purpose of this utility model is to overcome the problems of poor removal of organic matter and nutrients in water by existing aeration and reoxygenation technologies; insufficient treatment of deep-seated pollutants due to the inability of emergent plant roots on ecological floating beds to extend into deeper water layers; the limited landscape effect of submerged plants on ecological submerged beds, which are set below the water surface and whose growth is affected by water depth and visibility; the limited variety of plant species in ecological floating beds (which typically only plant emergent plants) and ecological submerged beds (which typically only plant submerged plants); and the insufficient utilization of water niches by both ecological floating beds and ecological submerged beds (which only utilize surface niches). This application provides a wastewater treatment system with enhanced purification effects, and the technical solution is as follows:

[0012] A wastewater treatment system with enhanced purification effect includes an aerator, an ecological floating bed, and an ecological settling bed;

[0013] The number of ecological floating beds is no less than two, and several ecological floating beds are evenly arranged around the aerator. The ecological submerged bed is set below the aerator. The aerator is connected to the ecological floating bed and the ecological submerged bed respectively by connecting cables.

[0014] As an alternative or supplement to the above-mentioned micro-polluted water treatment system that enhances the purification effect, the aerator is connected in sequence to the electrical control cabinet and the solar panel via cables.

[0015] As an alternative or supplement to the above-mentioned micro-polluted water treatment system that enhances the purification effect, the bottom of the ecological floating bed and the ecological submerged bed are provided with counterweight pipes.

[0016] As an alternative or supplement to the above-mentioned micro-polluted water treatment system that enhances the purification effect, the counterweight pipe includes a PVC pipe filled with cement mortar.

[0017] As an alternative or supplement to the above-mentioned micro-polluted water treatment system that enhances the purification effect, the aerator is equipped with a buoyancy block, which is shaped like a lotus petal.

[0018] As an alternative or supplement to the above-mentioned micro-polluted water treatment system that enhances purification effects, the ecological floating bed includes a floating bed substrate and emergent plants planted on the floating bed substrate.

[0019] As an alternative or supplement to the above-mentioned micro-polluted water treatment system that enhances purification effects, the ecological sedimentation bed includes a sedimentation substrate and submerged plants planted on the sedimentation substrate.

[0020] As an alternative or supplement to the aforementioned micro-polluted water treatment system that enhances purification effects, it is installed on rivers or lakes.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0022] This invention proposes a wastewater treatment system with enhanced purification effects, overcoming the limitations of existing technologies for treating wastewater in water bodies with low transparency, deep water levels, or large water level fluctuations. Aeration and reoxygenation technology creates a circulating water system in water bodies with poor hydrodynamic conditions, enhancing the water's self-purification capacity. Ecological floating beds purify water on the surface and in the shallow layers, while ecological submerged beds purify water below the surface. Considering the high effectiveness and relatively low investment of aeration and reoxygenation technology, ecological floating beds offer high economic efficiency and can be combined with landscape design and water body restoration. Submerged plants on ecological submerged beds significantly reduce nitrogen, phosphorus, and organic matter in the water, improving dissolved oxygen and transparency. These technologies complement each other, mitigating the shortcomings of individual technologies in water bodies with low transparency, deep water levels, or large water level fluctuations. The effective combination of these three technologies forms a solar-powered aeration system with enhanced purification effects, significantly improving its ecological benefits and purification function while also considering aesthetic appeal.

[0023] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a frontal cross-sectional structural diagram of the present invention.

[0026] Figure 2 This is a schematic diagram of the planar structure of this utility model.

[0027] Attached reference numerals: 1-Aerator; 2-Buoyancy block; 3-Electrical control cabinet; 4-Solar panel; 5-Cable; 6-Ecological floating bed; 7-Emerging plants; 8-Counterweight pipe; 9-Ecological submerged bed; 10-Submerged plants; 11-Connecting cable. Detailed Implementation

[0028] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] Please refer to Figure 1-2 As shown, this embodiment provides a wastewater treatment system with enhanced purification effect, including an aerator 1, an ecological floating bed 6, and an ecological settling bed 9; the number of ecological floating beds 6 is not less than two, and several ecological floating beds 6 are evenly arranged around the aerator 1, and the ecological settling bed 9 is set below the aerator 1; the aerator 1 is connected to the ecological floating bed 6 and the ecological settling bed 9 respectively by connecting cables 11.

[0032] The aerator 1 is connected in sequence to the electrical control cabinet 3 and the solar panel 4 via cable 5; the bottom of the ecological floating bed 6 and the ecological submerged bed 9 is provided with a counterweight pipe 8; the counterweight pipe 8 includes a PVC pipe, and the PVC pipe is filled with cement mortar; the aerator 1 is fitted with a buoyancy block 2, which is shaped like a lotus petal; the ecological floating bed 6 includes a floating bed substrate and emergent plants 7 planted on the floating bed substrate; it is set on a river or lake.

[0033] In the above embodiments, such as Figure 1 The diagram shown is a frontal view of the present invention. The enhanced purification system for micro-polluted water includes an aerator 1, which is a solar-powered aerator installed on the sewage surface. Its bottom is connected to an electrical control cabinet 3 and a solar panel 4 on the riverbank via a cable 5. Solar energy serves as the power source for the system, transferring oxygen-deficient water from the bottom to mix with oxygenated water on the surface, creating a circulating water system. This increases the dissolved oxygen content and enhances the water's self-purification capacity. A buoyancy block 2 is fitted onto the aerator 1. This buoyancy block 2 can be made of PVC lotus petals, mimicking the shape and color of a lotus flower, increasing buoyancy while also achieving aesthetic appeal. To observe the effect, the aerator 1 is connected to the ecological floating bed 6 and the ecological submerged bed 9 via the connecting cable 11. In this embodiment, there can be four ecological floating beds 6, which are evenly arranged around the aerator 1. The ecological submerged bed 9 is installed below the aerator 1 and is submerged in the river water. A counterweight pipe 8 is added to the bottom of the ecological floating bed 6 and the ecological submerged bed 9. The counterweight pipe 8 can be made of PVC pipe filled with cement mortar, which is both durable and economical. The weight and position of the bottom counterweight pipe 8 need to be determined according to the weight, spacing and buoyancy of the ecological floating bed 6 and the ecological submerged bed 9 to maintain the balance of the system. The connecting cable 11 is used to adjust the ecological niche of the entire sewage treatment system in the water body.

[0034] In this embodiment, the ecological floating bed 6 involves planting emergent plants 7 on a bed that floats on the water surface. The emergent plants 7 absorb pollutants from the water during their growth, while microorganisms attached to their roots degrade pollutants such as COD, nitrogen, and phosphorus, thus achieving effective water remediation. This technology significantly improves water transparency and water quality indicators, particularly controlling algae growth. The ecological submerged bed 9, on the substrate carrier, plants submerged plants 10. The depth of the plants in the water is artificially controlled by raising and lowering the bed, overcoming the limitations imposed by water depth and transparency on plant growth. This facilitates optimized plant population configuration and community construction, and is beneficial for subsequent plant maintenance and management. Submerged plants 10 are an important component of the aquatic ecosystem. The entire plant is submerged in water, and its roots, stems, and leaves can absorb pollutants such as nitrogen and phosphorus from the water to purify eutrophic water. They also provide a favorable growth environment for zooplankton, benthic animals, epiphytic fungi, and bacteria, maintaining the diversity of aquatic animals and microorganisms. Therefore, this technology is suitable for the restoration of water bodies with low transparency, deep water levels, or large water level fluctuations. In this embodiment, the ecological floating bed 6 and ecological submerged bed 9 use PVC frames and select plastic floats as the substrate carrier. The plastic floats have high buoyancy, supporting the weight of the substrate while providing additional buoyancy to maintain the balance of the floating and submerged beds. The plastic floats have a central hole and a matching planting pot. After preparing a certain amount of substrate, aquatic plants can be planted directly. Two to three types of emergent plants 7 with good purification effects and aesthetic appeal, and which are native species, are planted on the ecological floating bed 6. Two to three types of submerged plants 10 with good pollution tolerance, strong water purification capabilities, and native species are planted on the ecological submerged bed 9.

[0035] Therefore, the solar-powered aeration and reoxygenation technology of this invention can create a circulating water system in water bodies with poor hydrodynamic conditions, enhancing the water's self-purification capacity. The ecological floating bed 6 purifies the water on the surface and in the shallow layers, while the ecological submerged bed 9 purifies the water below. The synergy of these three technologies overcomes the problem of existing technologies having only one purification method. The circulating water system enhances self-purification capacity and fully utilizes the water space to achieve better purification results. The solar-powered aeration and reoxygenation technology provides sufficient oxygen to the water body, inhibiting the occurrence of black and odorous water. Emergent plants 7 in the ecological floating bed 6 can remove some pollutants from the water. They inhibit the growth of phytoplankton through root secretions, shading sunlight, and competition for nutrients. Planting emergent plants 7 on the floating bed beautifies the environment and enhances the landscape. The size of the ecological floating bed 6 can be modified according to different water bodies, and the construction and operation costs of the ecological floating bed 6 are low, operation and maintenance are convenient, and its application range is wide. The submerged plants 10 work synergistically with the ecological floating bed 6 to better remove nutrients such as nitrogen and phosphorus, as well as organic pollutants, from eutrophic water bodies. Planting submerged plants 10 and emergent plants 7 together can not only curb eutrophication and inhibit the growth of phytoplankton by absorbing nitrogen and phosphorus, but also absorb and enrich heavy metals, intercept and filter suspended particulate matter, and oxygenate the water through photosynthesis.

[0036] This invention takes into account the advantages of aeration and reoxygenation technology, which has good effectiveness and relatively low investment. The ecological floating bed 6 has high economic efficiency and can combine landscape design with water body restoration. The submerged plants 10 on the ecological submerged bed 9 can significantly reduce nitrogen, phosphorus, and organic matter in the water, and improve dissolved oxygen and transparency. They can also compensate for the shortcomings of the above three individual technologies in water bodies with low transparency, deep water, or large water level fluctuations. By effectively combining the three, a solar aeration system with enhanced purification effect is formed, which greatly improves its ecological effect and purification function.

[0037] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A wastewater treatment system with enhanced purification effect, characterized in that: This includes aerators, floating ecological beds, and settled ecological beds; The number of ecological floating beds is no less than two, and several ecological floating beds are evenly arranged around the aerator. The ecological submerged bed is set below the aerator. The aerator is connected to the ecological floating bed and the ecological submerged bed respectively by connecting cables.

2. The wastewater treatment system with enhanced purification effect according to claim 1, characterized in that: The aerator is connected in sequence to the electrical control cabinet and the solar panel via cables.

3. The wastewater treatment system with enhanced purification effect according to claim 1, characterized in that: The bottom of the ecological floating bed and the ecological submerged bed are equipped with counterweight pipes.

4. A wastewater treatment system with enhanced purification effect according to claim 3, characterized in that: The counterweight pipe includes a PVC pipe, which is filled with cement mortar.

5. A wastewater treatment system with enhanced purification effect according to claim 1, characterized in that: The aerator is fitted with a buoyancy block, which is shaped like a lotus petal.

6. A wastewater treatment system with enhanced purification effect according to claim 1, characterized in that: The ecological floating bed includes a floating bed substrate and emergent plants planted on the floating bed substrate.

7. A wastewater treatment system with enhanced purification effect according to claim 1, characterized in that: The ecological submerged bed includes a submerged substrate and submerged plants planted on the substrate.

8. A wastewater treatment system with enhanced purification effect according to claim 1, characterized in that: It is installed on rivers or lakes.

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