Sewage treatment system capable of enhancing purification effect

Abstract

The invention discloses a sewage treatment system for 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. The invention solves 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, 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, the ecological floating bed purifies the water quality on the surface and shallow layer of the water body, and the water quality is improved. 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] The invention belongs to the technical field of water treatment, and in particular to a sewage treatment system with enhanced purification effect. Background Art

[0002] In recent years, with the rapid development of economic level and the acceleration of urbanization, surface water bodies such as rivers and lakes have become the gathering place for the discharge of various sewage, resulting in the continuous aggravation of pollution in rivers and lakes, which seriously exceeds the limit of the self-purification capacity of water bodies. Many rivers and lakes have experienced eutrophication, reduced transparency and serious degradation of water ecosystems, and even become black and smelly water bodies. In response to the above situation, many countries and regions have adopted different methods to manage and repair rivers and lakes, mainly physical methods, chemical methods and biological-ecological methods. Among them, the biological-ecological method has been widely used due to its low cost, good repair effect, no or low energy consumption, low operating cost and closer to nature. The biological-ecological method mainly includes microbial enhancement technology, aeration and reoxygenation technology, biofilm restoration technology, artificial wetland technology, ecological floating bed technology and ecological sinking bed technology.

[0003] There are generally two ways of microbial enhancement technology: one is the bacteria addition method, and the other is the addition of microbial growth promoters. The bacteria addition method is to add high-efficiency bacteria selected for different pollutants existing in micro-polluted water bodies, such as nitrifying bacteria, photosynthetic bacteria, and high-efficiency degradation bacteria of organic pollutants, etc., into the water body, so as to achieve the purpose of removing pollutants and purifying water quality. The addition of microbial growth promoters uses the added microorganisms to awaken or activate the existing microorganisms in the water body that have the ability to degrade pollution, so as to give full play to the ability of existing microorganisms to degrade pollutants, thereby eliminating pollutants in the water body and the black and smelly phenomenon of the water body. The addition of microbial growth promoters is more ecologically safe than the bacteria addition method;

[0004] Among them, aeration and reoxygenation technology is based on the characteristics of hypoxia in rivers and lakes after being polluted. It uses natural waterfalls (overflow weirs, dams, etc.) or artificial aeration to reoxygenate water bodies, enhance the turbulence of river and lake water bodies, promote the exchange and mixing of upper oxygen-rich water bodies and lower oxygen-rich water bodies, increase the dissolved oxygen in the water, keep the self-purification process of the water body in an aerobic state, inhibit the release of nitrogen and phosphorus in the bottom mud, and prevent the occurrence of black and smelly water bodies. Thereby restoring and enhancing the activity of aerobic microorganisms in the water body, purifying pollutants in the water body, and thus achieving the purpose of improving the water quality of rivers and lakes. Aeration and reoxygenation technology has the advantages of good results, simple equipment, convenient operation, flexibility, safety and reliability, low investment, wide adaptability, and no harm to aquatic ecology. However, river aeration and reoxygenation technology has the disadvantages of poor effect in removing organic matter and nutrients in water bodies;

[0005] Among them, biofilm remediation technology actually strengthens the biological processes that occur in natural rivers. It uses natural materials (such as pebbles, gravel, and natural riverbeds) or artificial synthetic materials (such as fiber fillers, plastics, etc.) as carriers to allow microbial communities to attach to the surface of the carrier to form a film, thereby absorbing organic matter in the sewage as nutrition to purify the sewage. Biofilm remediation technology has the advantages of strong adaptability, stable treatment effect, convenient operation, conducive to the growth of microorganisms and low sludge production, and has been widely used in my country. The biofilm remediation technologies currently used to purify rivers mainly include biological contact oxidation, biological filter, biological rotary disc, etc. This method is only suitable for rivers with slow water flow and has high cost;

[0006] Among them, artificial wetland technology is to artificially simulate natural wetlands to construct an ecosystem similar to a swamp. It mainly uses the physical, chemical and biological synergistic effects of soil, gravel, plants and microorganisms to achieve water quality purification and environmental ecological restoration. Its mechanism of action includes adsorption, filtration, precipitation, oxidation-reduction, microbial decomposition, transformation and other effects. Artificial wetlands can be divided into three categories: surface flow, horizontal undercurrent and vertical undercurrent due to different water flow patterns. Artificial wetlands have the advantages of low construction and operation costs, easy maintenance and good ecological functions. However, the stable operation of artificial wetlands requires a certain period of time, occupies a large area, and is greatly affected by the environment.

[0007] Among them, the ecological floating bed technology is a biological control method that uses easily floating materials as a matrix or carrier to plant aquatic plants on the surface of eutrophic water bodies. Through the absorption or adsorption of plant roots, the nitrogen, phosphorus and organic pollutants in the water body are reduced, thereby purifying the water quality. Compared with other water treatment processes, the ecological floating bed technology is closer to nature and has better economic benefits. The plants planted on the floating bed beautify the environment, blend into the surrounding environment, and become a new landscape highlight. The construction and operation costs of the ecological floating bed are low. After completion, it is convenient and simple to operate and maintain, and the operating costs are low;

[0008] Among them, the ecological submerged bed technology mainly relies on the adsorption and degradation of submerged plants planted on the submerged bed to reduce the content of nutrients in the water body and improve the transparency of the water body, creating light and nutritional conditions for submerged plants, thereby guiding the natural restoration of submerged plants. The roots and stems of submerged plants can directly absorb nitrogen, phosphorus and other substances in the water body, increase the dissolved oxygen in the water through photosynthesis, provide aquatic animals with living habitats such as survival and spawning, and the young and tender parts can be fed by aquatic animals and can be used as carriers of microorganisms, thereby improving the purification capacity of the water body and improving the entire aquatic ecosystem.

[0009] With the increasingly serious water pollution problem, the above-mentioned single sewage treatment technology can no longer meet the needs of environmental pollution, especially for water bodies with low transparency, deep water level or large water level changes. None of the above-mentioned biological-ecological methods can properly treat them in a targeted manner. These technologies have various problems, such as high investment in microbial enhancement technology, poor purification effect of aeration and reoxygenation technology, difficulty in biofilm repair technology to form a film, lack of suitable construction sites for artificial wetlands, poor ecological purification effect in locations with deeper water of ecological floating beds, and limited growth of submerged plants in ecological submerged beds.

[0010] Therefore, in order to solve the problem of micro-polluted water bodies with low transparency, deep water level or large water level changes, it is necessary to design a new micro-polluted water treatment system. Summary of the invention

[0011] In view of this, the purpose of the present invention is to overcome the problem that the aeration and reoxygenation technology in the prior art is not effective in removing organic matter and nutrients in water bodies; the roots of emergent plants on the ecological floating bed cannot extend into the deeper water layer, resulting in insufficient treatment of deep pollutants; the ecological sinking bed is set below the water surface, and the growth of submerged plants is affected by the water depth, water visibility, etc., and the landscape effect is general; the ecological floating bed generally only plants emergent plants and the ecological sinking bed generally only plants submerged plants, and the plant species are single; the ecological floating bed only utilizes the ecological niche of the water surface, and the ecological sinking bed only utilizes the underwater ecological niche, and the two do not fully utilize the ecological niche of the water body, and provide a sewage treatment system with enhanced purification effect. The present application provides the following technical solutions:

[0012] A sewage treatment system with enhanced purification effect, comprising an aerator, an ecological floating bed and an ecological sedimentation bed;

[0013] The number of the ecological floating beds is not less than two, and several of the ecological floating beds are evenly arranged around the aerator. The ecological sinking bed is arranged below the aerator, and the aerator is respectively connected to the ecological floating bed and the ecological sinking bed through connecting ropes.

[0014] As an alternative or supplement to the above-mentioned micro-polluted water treatment system with enhanced purification effect, the aerator is sequentially connected to an electric control cabinet and a solar panel via cables.

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

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

[0017] As an alternative or supplement to the above-mentioned micro-polluted water treatment system with enhanced purification effect, a buoyancy block is mounted on the aerator, and the buoyancy block is in the shape of a lotus petal.

[0018] As an alternative or supplement to the above-mentioned micro-polluted water treatment system with enhanced purification effect, the ecological floating bed includes a floating bed matrix and emergent plants planted on the floating bed matrix.

[0019] As an alternative or supplement to the above-mentioned micro-polluted water treatment system with enhanced purification effect, the ecological sedimentation bed includes a sedimentation bed matrix and submerged plants planted on the sedimentation bed matrix.

[0020] As an alternative or supplement to the above-mentioned micro-polluted water treatment system with enhanced purification effect, it is installed on rivers or lakes.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0022] The present invention proposes a sewage treatment system with enhanced purification effect, which solves the limitations of the existing technology for treating sewage in water bodies with low transparency, deep water levels or large water level changes. The aeration and reoxygenation technology forms a living water cycle in water bodies with poor hydrodynamic conditions, thereby improving the self-purification ability of the water body. The ecological floating bed purifies water on the surface and shallow layer of the water body, while the ecological sinking bed purifies water below the water body. Considering that the aeration and reoxygenation technology has the characteristics of good results and relatively low investment, the ecological floating bed has high economy and can combine landscape design with water body restoration. The submerged plants on the ecological sinking bed can significantly reduce nitrogen and phosphorus nutrients and organic matter in the water body, improve the dissolved oxygen and transparency of the water body, etc., and can make up for the shortcomings of the above three single technologies in water bodies with low transparency, deep water levels or large water level changes. The three technologies are effectively combined to form a solar aeration system with enhanced purification effect, which greatly improves its ecological effect and purification function, while taking into account the beautification function.

[0023] In order to make the above-mentioned objects, features and advantages of the present application more obvious and understandable, preferred embodiments are given below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention from a front viewing angle.

[0026] Figure 2 It is a schematic diagram of the planar structure of the present invention.

[0027] Figure numerals: 1-aerator; 2-buoyancy block; 3-electric control cabinet; 4-solar panel; 5-cable; 6-ecological floating bed; 7-emergent plants; 8-weighted pipe; 9-ecological submerged bed; 10-submerged plants; 11-connecting rope. DETAILED DESCRIPTION

[0028] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0029] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] Please refer to Figure 1-2 As shown, the present embodiment provides a sewage treatment system with enhanced purification effect, comprising an aerator 1, an ecological floating bed 6 and an ecological sinking bed 9; the number of the 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 sinking bed 9 is arranged below the aerator 1, and the aerator 1 is connected to the ecological floating bed 6 and the ecological sinking bed 9 respectively through a connecting rope 11;

[0032] The aerator 1 is connected to an electric control cabinet 3 and a solar panel 4 in sequence through a cable 5; a counterweight pipe 8 is arranged at the bottom of the ecological floating bed 6 and the ecological sedimentation bed 9; the counterweight pipe 8 comprises a PVC pipe, and the PVC pipe is filled with cement mortar; a buoyancy block 2 is sleeved on the aerator 1, and the buoyancy block 2 is in the shape of a lotus petal; the ecological floating bed 6 comprises a floating bed matrix and emergent plants 7 planted on the floating bed matrix; and is arranged on a river or a lake.

[0033] In the above embodiment, if Figure 1 The front view structural diagram of the present invention is shown. The micro-polluted water treatment system with enhanced purification effect of the present invention includes an aerator 1, which is a solar aerator 1, which is installed on the sewage surface, and the bottom is connected to the electric control cabinet 3 and the solar panel 4 on the river bank through a cable 5. Solar energy is used as the power source for the operation of the equipment, and the oxygen-deficient water at the bottom is transferred and mixed with the reoxygenated water on the surface of the water body to form a living water cycle, increase the dissolved oxygen content of the water body, and improve the self-purification ability of the water body. The aerator 1 is provided with a buoyancy block 2, which can be a lotus petal made of PVC material, simulating the shape and color of the lotus, increasing the buoyancy while achieving an aesthetic effect. In this embodiment, the aerator 1 is connected to the ecological floating bed 6 and the ecological sinking bed 9 through the connecting rope 11. In this embodiment, the number of ecological floating beds 6 can be four, which are evenly arranged around the aerator 1. The ecological sinking bed 9 is installed under the aerator 1 and sunk in the river water. A counterweight pipe 8 is added to the bottom of the ecological floating bed 6 and the ecological sinking bed 9. The counterweight pipe 8 can be made of PVC pipe filled with cement mortar, which is 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 sinking bed 9 to maintain the balance of the system, and then cooperate with the connecting rope 11 to adjust the ecological niche of the entire sewage treatment system in the water body.

[0034] In this embodiment, the ecological floating bed 6 is a technology for planting emergent plants 7 on a bed body floating on the water surface, using the emergent plants 7 to absorb pollutants in the water body during growth, and using microorganisms attached to the plant roots to degrade pollutants such as COD, nitrogen, and phosphorus in the water, thereby effectively repairing the water body. It can greatly improve the transparency of the water body, and at the same time, the water quality indicators are also effectively improved, especially for algae. The submerged plants 10 are planted on the matrix carrier of the ecological submerged bed 9, and the depth of the plants in the water body is artificially regulated by the lifting of the bed body, and the depth of the plants under water is artificially regulated by the lifting of the bed body, which can overcome the constraints of objective factors such as water depth and transparency on plant growth, and it is easy to achieve the optimal configuration of plant populations and community construction, which is conducive to the maintenance and management of plants in the later stage. Submerged plants 10 are an important part of the aquatic ecosystem. The whole plant is immersed in water. The roots, stems and leaves can absorb pollutants such as nitrogen and phosphorus from the water to purify the eutrophic water body, and provide a good growth environment for zooplankton, benthic animals, epiphytic fungi and bacteria, etc., to maintain the diversity of aquatic animals and microorganisms. Therefore, this technology is suitable for the restoration of water bodies with low transparency, deep water level or large water level changes; in this embodiment, the ecological floating bed 6 and the ecological sinking bed 9 use PVC outer frames, and select plastic floating blocks as matrix carriers. The plastic floating blocks have large buoyancy. While bearing the weight of the matrix, they can also provide additional buoyancy for the floating bed and the sinking bed to maintain the balance of the bed. The plastic floating blocks have a round hole in the middle and a matching planting pot. After configuring a certain amount of matrix, aquatic plants can be directly planted; two to three kinds of emergent plants 7 with good purification effect, beautiful appearance and local plants are planted on the ecological floating bed 6; two to three kinds of submerged plants 10 with good pollution resistance, strong water purification ability and local species are planted on the ecological sinking bed 9.

[0035] Therefore, the solar aeration and reoxygenation technology of the present invention can form a live water cycle in water bodies with poor hydrodynamic conditions, improve the self-purification ability of the water body, the ecological floating bed 6 purifies the water quality on the surface and shallow layer of the water body, and the ecological submerged bed 9 purifies the water quality below the water body. The mutual cooperation of these three technologies has changed the problem of the single purification method in the existing technology. The live water cycle improves the self-purification ability and makes full use of the water body space to achieve better purification effect. The solar aeration and reoxygenation technology provides sufficient oxygen for the water body and inhibits the occurrence of black and smelly water bodies; the emergent plants 7 in the ecological floating bed 6 can remove some pollutants from the water body; the growth of phytoplankton is inhibited by root secretions, blocking sunlight, competing for nutrients, etc.; planting emergent plants 7 on the floating bed beautifies the environment and has strong 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, the operation and maintenance are convenient, and the application range is wide. The submerged plants 10 and the ecological floating bed 6 work together to remove nutrients such as nitrogen and phosphorus and organic pollutants in eutrophic water bodies. The combined planting of submerged plants 10 and emergent plants 7 can not only curb eutrophication of water bodies and inhibit the growth of phytoplankton by absorbing nitrogen, phosphorus, etc., but also absorb and enrich heavy metals, intercept and filter suspended particles, etc., and at the same time achieve the effect of increasing oxygen to the water body through plant photosynthesis.

[0036] The present invention takes into account that aeration and reoxygenation technology has the characteristics of good effectiveness and relatively low investment, the ecological floating bed 6 has high economy and can combine landscape design with water body restoration, and the submerged plants 10 on the ecological sedimentation bed 9 can significantly reduce nitrogen and phosphorus nutrients and organic matter in the water body, improve the dissolved oxygen and transparency of the water body, etc., and can make up for the respective shortcomings of the above three single technologies in water bodies with low transparency, deep water level or large water level changes. The three are effectively combined to form a solar aeration system with enhanced purification effect, which greatly improves its ecological effect and purification function.

[0037] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A sewage treatment system with enhanced purification effect, characterized in that: Including aerators, ecological floating beds and ecological sinking beds; The number of the ecological floating beds is not less than two, and several of the ecological floating beds are evenly arranged around the aerator. The ecological sinking bed is arranged below the aerator, and the aerator is respectively connected to the ecological floating bed and the ecological sinking bed through connecting ropes.

2. A sewage treatment system with enhanced purification effect according to claim 1, characterized in that: The aerator is sequentially connected to an electric control cabinet and a solar panel via cables.

3. A sewage treatment system with enhanced purification effect according to claim 1, characterized in that: The bottoms of the ecological floating bed and the ecological sinking bed are provided with weight pipes.

4. A sewage treatment system with enhanced purification effect according to claim 3, characterized in that: The counterweight pipe comprises a PVC pipe, and the PVC pipe is filled with cement mortar.

5. A sewage treatment system with enhanced purification effect according to claim 1, characterized in that: The aerator is sleeved with a buoyancy block, which is in the shape of a lotus petal.

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

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

8. A sewage treatment system with enhanced purification effect according to claim 1, characterized in that: Set on a river or lake.

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