River dirty water backflow discharge ecological circulation system and method thereof

Abstract

This invention belongs to the field of river pollution water treatment technology, and discloses a river pollution water backflow and discharge ecological cycle system and method. This ecological cycle system includes four parts arranged vertically between the left and right banks of the river: a longitudinal inlet / outlet zone, a first longitudinal treatment zone, a second longitudinal treatment zone, and a transition zone for turning and backflow. Specifically, along the river's flow direction, the longitudinal inlet / outlet zone forms an inlet / diversion zone, a water-blocking dam, and an outlet / merging zone. Along the river's flow direction, several corresponding filtration units and hydroelectric units are installed in the lower first and second longitudinal treatment zones, forming a U-shaped backflow discharge channel with the inlet / diversion zone as the inlet, the outlet / merging zone as the outlet, and the transition zone for turning and backflow as the bend. This invention divides the river into four longitudinal sections and connects them into a whole, achieving multi-stage treatment and ecological utilization of river water, effectively improving the natural ecological environment.

Description

Technical Field

[0001] This invention relates to the field of river pollution treatment technology, and in particular to an ecological cycle system and method for the backflow and discharge of river pollution. Background Technology

[0002] Water is the source of life and one of the most fundamental substances upon which humankind depends for survival. River pollution, as commonly understood, refers to the direct or indirect introduction of substances or energy into the river environment by human activities, resulting in harmful effects such as damage to river biological resources, deterioration of river water and environmental quality, and harm to human health. Furthermore, due to environmental degradation, river water safety is increasingly threatened, directly threatening people's living environment. In addition, with social development and improved living standards, the public has increasingly higher demands for river water quality. Currently, people are treating polluted river wastewater for the purpose of protecting the ecological environment.

[0003] However, existing methods for treating polluted river water typically employ traditional methods such as aeration, stirring, fermentation, and sedimentation. These methods are often ineffective and fail to meet current treatment needs. Therefore, to address these issues, it is necessary to provide an innovative method for treating polluted river water that overcomes the shortcomings of existing technologies. Summary of the Invention

[0004] The technical problem to be solved by this invention is to address the above-mentioned defects in existing river sewage treatment technologies by proposing an ecological cycle system and method for the backflow and discharge of river sewage.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The first aspect of this invention is to provide an ecological cycle system for the backflow and discharge of polluted river water, comprising four parts arranged vertically between the left and right banks of the river: a longitudinal inlet / outlet zone, a first longitudinal treatment zone, a second longitudinal treatment zone, and a transition zone for turning and backflowing water, wherein:

[0007] The longitudinal inlet and outlet water zones are longitudinally located at the river level, and their front and rear ends as well as their bottoms are open, forming the water inlet for water distribution, the water inlet for turning water, the water outlet for backflow, and the water outlet for water merging in the ecological cycle system, respectively; the first longitudinal treatment zone, the second longitudinal treatment zone, and the water inlet and backflow transition zone are longitudinally located at the bottom of the river, and the front and rear ends and bottom edges of the areas they form are closed.

[0008] Along the direction of the river's water flow, an inlet and outlet water separation zone, a water-blocking dam, and an outlet water merging zone are formed in the longitudinal water inlet and outlet water separation zone. Along the direction of the river's water flow, several corresponding filtration units and hydroelectric units are set in the first and second longitudinal treatment zones below, forming a U-shaped backflow discharge channel with the inlet water separation zone as the inlet, the turning water and backflow transition zone as the turning guide, and the outlet water merging zone as the outlet.

[0009] Preferably, in the first and second longitudinal processing zones, at positions below the inlet water separation zone and the outlet water merging zone, a plurality of filter units and water-electricity units are respectively arranged at intervals; and there are two filter units, which are respectively arranged on both sides of the water inlet of the water-electricity unit.

[0010] Preferably, in the first and second longitudinal processing zones, corresponding filter units and water-electricity units are provided at positions below the water-blocking dam; and the rear end of the top water inlet of the water-electricity unit is sealed to the water-blocking dam, and the front end of the top water inlet is connected to the water-blocking dam through the filter unit.

[0011] Preferably, a first filter-power generation water distribution channel and a second filter-power generation water distribution channel are arranged at intervals in the first longitudinal treatment zone and the second longitudinal treatment zone corresponding to the water inlet zone, and a mud-sand-gravel water distribution channel, a turbid water distribution channel and a normal water distribution channel are formed on both sides and between the first filter-power generation water distribution channel and the second filter-power generation water distribution channel.

[0012] More preferably, the first filtration and power generation water distribution channel includes a first filter leaf, a first water-power workshop, a second filter leaf, and a second water-power workshop, which are sequentially connected between the longitudinal inlet / outlet water zone and the transition zone for turning and reversing water, wherein:

[0013] The first filter leaf and the first water and electricity workshop are located in the first longitudinal treatment area, and the top inlet of the first filter leaf is connected to the longitudinal water inlet and outlet area, and the side walls are connected to the mud and gravel water distribution channel and the turbid water water distribution channel.

[0014] The second filter leaf and the second hydroelectric workshop are located within the second longitudinal treatment zone, and the top inlet of the second filter leaf is connected to the bottom outlet of the first hydroelectric workshop, while the side walls are connected to the mud and gravel diversion channel and the turbid water diversion channel.

[0015] More preferably, the second filtration and power generation water distribution channel includes a third filter leaf, a third water and electricity workshop, a fourth filter leaf, and a fourth water and electricity workshop, which are sequentially connected between the longitudinal inlet / outlet water zone and the transition zone for turning and reversing water, wherein:

[0016] The third filter leaf and the third water and electricity workshop are located within the first longitudinal treatment zone, and the top of the third filter leaf is connected to the longitudinal inlet and outlet water zone, while the two side walls are connected to the turbid water flow channel and the normal water flow channel.

[0017] The fourth filter leaf and the fourth water and electricity workshop are located in the second longitudinal treatment zone, and the top inlet of the fourth filter leaf is connected to the bottom outlet of the third water and electricity workshop, and the side walls are connected to the turbid water flow channel and the normal water flow channel.

[0018] Preferably, a regulating water area and a third filtration and power generation water distribution channel are provided in the first and second longitudinal treatment zones corresponding to the water-blocking dam, wherein:

[0019] The regulating water area is connected to the normal water distribution channel on the left and to the third filter power generation water distribution channel on the right through the fifth filter leaf window. The right side of the third filter power generation water distribution channel is closed to the outlet water merging area.

[0020] The third filtration power generation water distribution channel includes a fifth hydropower workshop located in the second longitudinal treatment zone and a fifth filter leaf window arranged laterally between the top left side of the fifth hydropower workshop and the water-blocking dam.

[0021] Preferably, a fourth and a fifth filter-power generation water distribution channel are provided at intervals in the second and first longitudinal treatment zones below the effluent water distribution zone, and a normal water distribution channel, a turbid water distribution channel, and a silt and gravel distribution channel are formed on both sides and between the fourth and fifth filter-power generation water distribution channels.

[0022] More preferably, the fourth filtration and power generation water distribution channel includes a sixth filter leaf, a sixth water-electric workshop, a seventh filter leaf, and a seventh water-electric workshop, which are sequentially connected between the turning water and the reverse water transition zone and the longitudinal inlet and outlet water zone, wherein:

[0023] The sixth filter leaf and the sixth water and electricity workshop are located in the second longitudinal treatment area, and the top of the sixth filter leaf is not connected to the turning water and backflow transition area, while the two side walls are connected to the normal water mixing channel and the turbid water mixing channel.

[0024] The seventh filter leaf and the seventh water and electricity workshop are located within the first longitudinal treatment zone, and the top inlet of the seventh filter leaf is connected to the bottom outlet of the sixth water and electricity workshop, while the side walls are connected to the normal water mixing channel and the turbid water mixing channel.

[0025] More preferably, the fifth filtration and power generation water distribution channel includes an eighth filter leaf, an eighth water and electricity workshop, a ninth filter leaf, and a ninth water and electricity workshop, which are sequentially connected between the turning water and backwater transition zone and the longitudinal inlet and outlet water zone, wherein:

[0026] The eighth filter leaf and the eighth water and electricity workshop are located in the second longitudinal treatment area, and the top of the eighth filter leaf is not connected to the turning water and backflow transition area, while the two side walls are connected to the turbid water mixing channel and the mud and gravel mixing channel.

[0027] The ninth filter leaf and the ninth hydroelectric workshop are located within the first longitudinal treatment zone, and the top inlet of the ninth filter leaf is connected to the bottom outlet of the eighth hydroelectric workshop, while the side walls are connected to the sludge-water mixing channel and the mud-sand-gravel mixing channel.

[0028] Preferably, in the direction of water flow in the inlet water diversion zone, the water flow rate from the inlet water diversion zone directly to the outlet water merging zone through the water-blocking dam is 33%; and in the direction of water flow in the longitudinal inlet and outlet water zones, the water flow rate from the inlet water diversion zone downward to the turning water and backflow transition zone is 67%.

[0029] Preferably, in the longitudinal water flow direction of the inlet and outlet water zones, the width of the inlet water zone accounts for 35%, the width of the water-blocking dam accounts for 30%, and the width of the outlet water-combining zone accounts for 35%.

[0030] The second aspect of this invention is to provide a method for ecological recycling of polluted river water through backflow and discharge, comprising the following steps:

[0031] S1, Constructing an ecological cycle system for the backflow and discharge of polluted water in rivers as described in any one of claims 1 to 12 between the left and right banks of the river, including longitudinally arranged inlet and outlet water zones, a first longitudinal treatment zone, a second longitudinal treatment zone, a turning water and backflow transition zone, as well as an inlet water diversion zone, a water-blocking dam, an outlet water merging zone, and corresponding transverse flow channels.

[0032] S2, after the polluted water from the river flows longitudinally into the inlet water diversion zone, part of the water flows through the water-blocking dam to the outlet water-merging zone, while the other part of the water, blocked by the water-blocking dam, flows sequentially downward into the mud and gravel diversion channel, the first filtration and power generation diversion channel, the polluted water diversion channel, the second filtration and power generation diversion channel, and the normal water diversion channel for the first stage of graded treatment, and then collects in the turning water and backflow transition zone.

[0033] S3, the primary turbid water collected in the turning water and backflow transition zone flows upward into the normal water merging channel, the fourth filtration and power generation water distribution channel, the turbid water merging channel, the fifth filtration and power generation water distribution channel and the mud and gravel merging channel for secondary classification treatment, and then collects in the outlet merging zone and is discharged from the outlet.

[0034] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0035] (1) The river sewage backflow and discharge ecological cycle system divides the river into four sections along its depth and connects them into a whole, forming a U-shaped backflow discharge channel with several filtration units and hydropower units, and the units are connected by longitudinal and transverse flow channels. This realizes multi-level treatment and ecological utilization of river water, thereby achieving purification and energy regeneration of river water and effectively improving the natural ecological environment.

[0036] (2) Clearly define the treatment of polluted water as the primary task and the development of hydropower production as the secondary task. Adopt the ecological cycle system of the river's polluted water backflow and discharge. It utilizes multiple filtration units arranged within the system to perform multi-stage filtration treatment of polluted water, and also develops electricity production through multiple hydropower units arranged within the system. This eliminates the original stagnant water and bottom water, effectively achieving the treatment of river polluted water, while also realizing the regeneration of hydropower resources.

[0037] (3) In the inlet water separation area, the sludge and gravel separation channel, the first filter power generation separation channel, the turbid water separation channel, the second filter power generation separation channel and the normal water separation channel are arranged in a horizontal direction to achieve the first stage treatment of the inflow turbid water, forming turning water and back water; and in the outlet water merging area, the normal water merging channel, the fourth filter power generation separation channel, the turbid water merging channel, the fifth filter power generation separation channel and the sludge and gravel merging channel are arranged in a horizontal counter direction to achieve the second stage treatment of the turning water and back water. The normal water quality turbid water after the second stage treatment is both symptomatic and root cause treatment, and the symptoms and root cause are treated at the same time. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of a sewage discharge-type ecological cycle system for the backflow and release of polluted water in rivers according to the present invention.

[0039] Figure 2 This is a schematic diagram of the structure of a comprehensive ecological cycle system for the backflow and discharge of polluted river water according to the present invention. Detailed Implementation

[0040] The present invention will now be described in detail and specifically through specific embodiments to enable a better understanding of the invention. However, the following embodiments do not limit the scope of the invention.

[0041] Example 1: Integrated Ecological Recycling System for Backflow and Discharge of Polluted River Water

[0042] like Figure 1 As shown, the river's sewage backflow and discharge ecological cycle system is a comprehensive type, mainly consisting of four parts arranged side by side along the longitudinal Y direction between the left and right banks of a river: the longitudinal inlet and outlet zone Y10, the first longitudinal treatment zone Y20, the second longitudinal treatment zone Y30, and the turning water and backflow transition zone Y40. The longitudinal inlet and outlet zone Y10, the first longitudinal treatment zone Y20, the second longitudinal treatment zone Y30, and the turning water and backflow transition zone Y40 are arranged vertically in four segments along the depth, with the same height value, which is one-quarter of the system's depth.

[0043] Specifically, the longitudinal inlet / outlet zone Y10 is longitudinally positioned at the river's horizontal plane, while the transition zone Y40 for turning and backflow is located at the bottom of the system. Only the front and rear ends, as well as the bottom edges of the front and rear ends of the longitudinal inlet / outlet zone Y10, are open, forming the water inlet for the ecological cycle system, the turning water inlet, the backflow outlet, and the merging water outlet, respectively. The first longitudinal treatment zone Y20, the second longitudinal treatment zone Y30, and the transition zone Y40 for turning and backflow are longitudinally positioned at the river's bottom, and the front and rear ends and bottom edges of the areas they constitute are closed.

[0044] Along the X-direction of the river's water flow, the longitudinal inlet and outlet areas Y10 form an inlet / drainage zone X10, a water-blocking dam X20, and an outlet / merging zone X30. The system spans a section of the river with a prototype length of 50 meters × an expanded length of 4 times = 200 meters. The lengths of the inlet / drainage zone X10 and the outlet / merging zone X30 each account for 35%, each being 70 meters; the length of the water-blocking dam X20 accounts for 30%, being 60 meters. Furthermore, along the X-direction of the river's water flow, several corresponding filtration units S and hydroelectric units D are installed in the first longitudinal treatment zone Y20 and the second longitudinal treatment zone Y30 below, forming a U-shaped backflow discharge channel with the inlet / drainage zone X10 as the inlet, the turning and backflow transition zone Y40 as the turning guide, and the outlet / merging zone X30 as the outlet.

[0045] The U-shaped backflow discharge channel connects the inlet water separation zone X10 and the outlet water merging zone X30 at its top. Inlet water separation zone X10 serves as the inlet area of ​​the U-shaped backflow discharge channel, and outlet water merging zone X30 serves as the outlet area. By arranging corresponding filtration and hydroelectric units within the U-shaped backflow discharge channel, multi-stage treatment and ecological utilization of river water are achieved, thereby purifying the river flow and regenerating energy, effectively improving the natural ecological environment.

[0046] like Figure 1As shown, to assist in the treatment of polluted water, a hydropower production system is also set up in this backflow discharge ecological cycle system. Multiple filtration units within the system perform multi-stage filtration of the polluted water, and multiple hydropower units within it generate electricity. Specifically, sediment, polluted water, and normal water zones are set up along the Y direction of the inlet water separation zone X10 and the outlet water merging zone X30, with nine hydropower workshops located between each zone. Furthermore, a regulating water zone is set up at the connection between the inlet water separation zone X10 and the outlet water merging zone X30, corresponding to the location of the water-blocking dam X20.

[0047] Specifically, within the first longitudinal processing zone Y20 and the second longitudinal processing zone Y30, corresponding to the positions below the inlet water separation zone X10 and the outlet water merging zone X30, several spaced-apart filter units S and water-electricity units D are respectively arranged; and there are two filter units S, respectively located on both sides of the inlet of the water-electricity unit D. Furthermore, within the first longitudinal processing zone Y20 and the second longitudinal processing zone Y30, corresponding to the positions below the water-blocking dam X20, a fifth filter unit S and a water-electricity unit D are arranged; and the rear end of the top inlet of the water-electricity unit D is sealed to the water-blocking dam X20, while the front end of the top inlet is connected to the water-blocking dam X20 through the filter unit S.

[0048] like Figure 1 As shown, a first filter-power generation water distribution channel X12 and a second filter-power generation water distribution channel X14 are arranged at intervals in the first longitudinal treatment zone Y20 and the second longitudinal treatment zone Y30 below the water inlet zone X10. A mud-sand-gravel water distribution channel X11, a turbid water distribution channel X13, and a normal water distribution channel X15 are formed on both sides and between the first filter-power generation water distribution channel X12 and the second filter-power generation water distribution channel X14.

[0049] The first filtration and power generation water distribution channel X12 includes a first filter leaf S1, a first hydroelectric workshop D1, a second filter leaf S2, and a second hydroelectric workshop D2, which are sequentially connected between the longitudinal inlet / outlet water zone Y10 and the transition zone Y40. Specifically: the first filter leaf S1 and the first hydroelectric workshop D1 are located within the first longitudinal treatment zone Y20, and the top inlet of the first filter leaf S1 connects to the longitudinal inlet / outlet water zone Y10, while its side walls connect to the sediment / gravel water distribution channel X11 and the turbid water water distribution channel X13. The second filter leaf S2 and the second hydroelectric workshop D2 are located within the second longitudinal treatment zone Y30, and the top inlet of the second filter leaf S2 connects to the bottom outlet of the first hydroelectric workshop D1, while its side walls connect to the sediment / gravel water distribution channel X11 and the turbid water water distribution channel X13.

[0050] like Figure 1As shown, the second filtration and power generation water distribution channel X14 includes a third filter leaf S3, a third water and electricity workshop D3, a fourth filter leaf S4, and a fourth water and electricity workshop D4, which are sequentially connected between the longitudinal inlet / outlet water zone Y10 and the transition zone Y40. The third filter leaf S3 and the third water and electricity workshop D3 are located within the first longitudinal treatment zone Y20, with the top of the third filter leaf S3 connected to the longitudinal inlet / outlet water zone Y10, and its side walls connected to the turbid water distribution channel X13 and the normal water distribution channel X15. The fourth filter leaf S4 and the fourth water and electricity workshop D4 are located within the second longitudinal treatment zone Y30, with the top inlet of the fourth filter leaf S4 connected to the bottom outlet of the third water and electricity workshop D3, and its side walls connected to the turbid water distribution channel X13 and the normal water distribution channel X15.

[0051] like Figure 1 As shown, a regulating water area X21 and a third filtration and power generation water distribution channel X22 are provided in the first longitudinal treatment area Y20 and the second longitudinal treatment area Y30 corresponding to the water-blocking dam X20. The regulating water area X21 is connected to the normal water distribution channel X15 on its left side, and to the third filtration and power generation water distribution channel X22 on its right side via a fifth filter leaf S5. The right side of the third filtration and power generation water distribution channel X22 is closedly connected to the effluent and water-binding area X30. The third filtration and power generation water distribution channel X22 includes a fifth hydropower workshop D5 correspondingly located in the second longitudinal treatment area Y30 and a fifth filter leaf S5 arranged laterally between the top left side of the fifth hydropower workshop D5 and the water-blocking dam X20.

[0052] like Figure 1 As shown, corresponding to the inlet water distribution zone X10, the second longitudinal treatment zone Y30 and the first longitudinal treatment zone Y20 below the outlet water distribution zone X30 are provided with a fourth filter power generation water distribution channel X32 and a fifth filter power generation water distribution channel X34 arranged at intervals. A normal water distribution channel X31, a turbid water distribution channel X33, and a silt and gravel distribution channel X35 are formed on both sides and between the fourth filter power generation water distribution channel X32 and the fifth filter power generation water distribution channel X34.

[0053] Specifically, the fourth filtration and power generation water distribution channel X32 includes a sixth filter leaf S6, a sixth water and electricity workshop D6, a seventh filter leaf S7, and a seventh water and electricity workshop D7, which are sequentially connected between the transition zone Y40 and the longitudinal inlet / outlet zone Y10. The sixth filter leaf S6 and the sixth water and electricity workshop D6 are located within the second longitudinal treatment zone Y30, and the top of the sixth filter leaf S6 is not connected to the transition zone Y40, while its side walls are connected to the normal water mixing channel X31 and the turbid water mixing channel X33. The seventh filter leaf S7 and the seventh water and electricity workshop D7 are located within the first longitudinal treatment zone Y20, and the top inlet of the seventh filter leaf S7 is connected to the bottom outlet of the sixth water and electricity workshop D6, while its side walls are connected to the normal water mixing channel X31 and the turbid water mixing channel X33.

[0054] In addition, such as Figure 1 As shown, the fifth filtration and power generation water distribution channel X34 includes an eighth filter leaf S8, an eighth hydroelectric workshop D8, a ninth filter leaf S9, and a ninth hydroelectric workshop D9, which are sequentially connected between the transition zone Y40 and the longitudinal inlet / outlet zone Y10. The eighth filter leaf S8 and the eighth hydroelectric workshop D8 are located within the second longitudinal treatment zone Y30, and the top of the eighth filter leaf S8 is not connected to the transition zone Y40, while its side walls are connected to the sludge-water mixing channel X33 and the silt-gravel mixing channel X35. The ninth filter leaf S9 and the ninth hydroelectric workshop D9 are located within the first longitudinal treatment zone Y20, and the top inlet of the ninth filter leaf S9 is connected to the bottom outlet of the eighth hydroelectric workshop D8, while its side walls are connected to the sludge-water mixing channel X33 and the silt-gravel mixing channel X35.

[0055] This river pollution backflow and discharge ecological cycle system prioritizes the treatment of polluted water while prioritizing hydropower development. It utilizes multiple filtration units within the system to perform multi-stage filtration of polluted water, and also generates electricity through multiple hydropower units within the system. This eliminates the space for existing backwater and bottom water, effectively treating river pollution while simultaneously regenerating hydropower resources.

[0056] In actual production applications, to achieve effective filtration of polluted water and improve treatment efficiency, in the water flow direction of the inlet water diversion zone X10, the water flow rate directly from the inlet water diversion zone X10 through the water-blocking dam X20 to the outlet water merging zone X30 is 33%. This small portion of water is part of the normal water after filtering silt and polluted water, and can directly flow into the outlet water merging zone X30 through the water-blocking dam X20. The main point is that, in the water flow direction of the longitudinal inlet and outlet water zone Y10, the water flow from the inlet water diversion zone X10 downward to the turning water and backflow transition zone Y40 accounts for 67%. This majority of the river sewage flows into the longitudinal inlet and outlet water zone Y10 from the inlet, and then passes through the mud and gravel diversion channel X11 and the sewage water diversion channel X13 in sequence to remove the mud, gravel and dirt, forming relatively clean normal water. This part of the normal water accounts for about 40-45% of the total, including the part flowing into the water-blocking dam X20 from the X direction.

[0057] As shown in the figure, to meet the requirements of graded treatment of turbid water, ensuring sufficient sedimentation and filtration within the U-shaped backflow discharge channel, the turbid water must flow for a certain period of time within the corresponding sediment-gravel diversion channel X11, the first filtration-power generation diversion channel X12, the turbid water diversion channel X13, the second filtration-power generation diversion channel X14, and the normal water diversion channel X15, possessing a certain depth and width. Specifically, in the longitudinal inlet / outlet zone Y10, the width of the inlet diversion zone X10 accounts for 35%, the width of the water-blocking dam X20 accounts for 30%, and the width of the outlet merging zone X30 accounts for 35%. The depth of each zone in the Y direction is 3 / 5 of the total width in the X direction.

[0058] like Figure 1 As shown, based on the above-mentioned ecological cycle system for the backflow and discharge of polluted river water, a method for ecological cycle of polluted river water backflow and discharge is also provided, which specifically includes the following steps:

[0059] S1. Construct an ecological cycle system for the backflow and discharge of polluted water between the left and right banks of a certain section of a river. This system includes a longitudinally arranged inlet / outlet zone Y10, a first longitudinal treatment zone Y20, a second longitudinal treatment zone Y30, a transition zone for turning and backflow Y40, an inlet / drainage zone X10, a dam X20, an outlet / merging zone X30, and corresponding transverse channels. Specifically, the system has a depth of 50m and a length four times its depth, totaling 200m. In the longitudinal direction of the inlet / outlet zone Y10, the width of the inlet / drainage zone X10 and the outlet / merging zone X30 each occupies 35%, or 70m; the dam occupies 30%, or 60m, for a total width of 200m.

[0060] S2, after the polluted river water flows longitudinally into the inlet water diversion zone X10, 33% of the water flows through the water-blocking dam X20 to the outlet water merging zone X30. The remaining 67% of the water, blocked by the water-blocking dam X20, flows sequentially downwards into the sediment and gravel diversion channel X11, the first filtration and power generation diversion channel X12, the polluted water diversion channel X13, the second filtration and power generation diversion channel X14, and the normal water diversion channel X15 for the first stage of graded treatment, sediment deposition and filtrate filtration, and then collects in the bottom turning water and backflow transition zone Y40.

[0061] S3, the primary turbid water collected in the turning water and backflow transition zone Y40 flows upward into the normal water merging channel X31, the fourth filtration and power generation water distribution channel X32, the turbid water merging channel X33, the fifth filtration and power generation water distribution channel X34, and the silt and gravel merging channel X35 for a second stage of classification treatment, further sedimentation and filtration of silt and dirt, and then flows upward into the outlet merging zone X30 and is discharged from the outlet of the outlet merging zone X30.

[0062] Example 2: Sewage Discharge Type River Polluted Water Backflow and Discharge Ecological Recycling System

[0063] like Figure 1 As shown, unlike the integrated river sewage backflow ecological recycling system in Example 1, this sewage discharge-type river sewage backflow ecological recycling system combines the silt, sewage, and normal water areas into one, and removes the nine hydroelectric workshops installed within it. The system has a depth of 50m and a length that is four times its depth, totaling 200m. In the longitudinal inlet and outlet direction Y10, the width of the inlet water separation area X10 and the outlet water merging area X30 each occupies 1 / 3, i.e., each occupies 66.7m, totaling 200m.

[0064] Specifically, the sewage discharge ecological cycle system for the backflow of polluted river water also includes four parts arranged side by side between the left and right banks of a river, along the longitudinal Y direction and in an up-down arrangement: longitudinal inlet / outlet zone Y10, first longitudinal treatment zone Y20, second longitudinal treatment zone Y30, and turning water and backflow transition zone Y40. The width of the four parts relative to the left and right banks is the same, which is one-quarter of the system width.

[0065] The longitudinal inlet / outlet zone Y10 is longitudinally positioned at the river's horizontal plane, while the transition zone Y40 for turning and backflow is located at the bottom of the system. Only the front and rear ends, as well as the bottom edges of the front and rear ends of the longitudinal inlet / outlet zone Y10, are open, forming the water inlet for the ecological cycle system, the turning water inlet, the backflow outlet, and the merging water outlet, respectively. The first longitudinal treatment zone Y20, the second longitudinal treatment zone Y30, and the transition zone Y40 for turning and backflow are longitudinally positioned at the river's bottom, and the front and rear ends and bottom edges of the areas they constitute are closed.

[0066] Along the X direction of the river's water flow, an inlet and outlet water separation zone X10, a water-blocking dam X20, and an outlet water merging zone X30 are formed in the longitudinal inlet and outlet water separation zone Y10. Along the X direction of the river's water flow, several corresponding filter units S and hydroelectric units D are set in the first longitudinal treatment zone Y20 and the second longitudinal treatment zone Y30 below, forming a U-shaped backflow discharge channel with the inlet water separation zone X10 as the inlet, the turning water and backflow transition zone Y40 as the turning guide, and the outlet water merging zone X30 as the outlet.

[0067] In the Y-direction at the bottom of the inlet water diversion zone X10, the first longitudinal treatment zone Y20, the second longitudinal treatment zone Y30, and the transition zone Y40 for turning and backflow are interconnected vertically and horizontally, forming a downward sand and gravel deposition filtration area. At the bottom of the water-blocking dam X20, the first longitudinal treatment zone Y20, the second longitudinal treatment zone Y30, and the transition zone Y40 for turning and backflow are interconnected vertically and horizontally, forming an independent regulating water filtration area. And in the Y-direction of the outlet water merging zone X30, the first longitudinal treatment zone Y20, the second longitudinal treatment zone Y30, and the transition zone Y40 for turning and backflow are interconnected vertically and horizontally, forming an upward sand and gravel deposition filtration area.

[0068] The U-shaped backflow discharge channel connects the inlet water separation zone X10 and the outlet water merging zone X30 at its top. Inlet water separation zone X10 serves as the inlet area of ​​the U-shaped backflow discharge channel, and outlet water merging zone X30 serves as the outlet area. By arranging corresponding filtration and hydroelectric units within the U-shaped backflow discharge channel, multi-stage treatment and ecological utilization of river water are achieved, thereby purifying the river flow and regenerating energy, effectively improving the natural ecological environment.

[0069] Unlike comprehensive river wastewater backflow and discharge ecological recycling systems, this wastewater discharge-type river wastewater backflow and discharge ecological recycling system does not include filtration units or hydropower workshops. Only one filtration unit is vertically installed on the left side of the regulating water area at the bottom of the water-blocking dam X20. The upper and lower ends of this filtration unit are located only within the first longitudinal treatment zone Y20. An isolation wall is installed on the right side of the regulating water area to enclose it from the first longitudinal treatment zone Y20 and the second longitudinal treatment zone Y30 on the right, thus blocking the water flow and facilitating the formation of a water flow channel within the corresponding turning water and backflow transition zone Y40 at the bottom of the isolation wall.

[0070] Furthermore, it is worth noting that, according to the predetermined design, the water flow along the river in the X direction forms an inlet / outlet separation zone X10, a water-blocking dam X20, and an outlet / merging zone X30 in the longitudinal inlet / outlet zone Y10, each ideally accounting for 33.3%. However, considering the relatively large sum of inlet / outlet values ​​plus the hydropower plant value, it is more appropriate to appropriately increase the inlet / outlet value to 35% each, and appropriately decrease the water-blocking dam's share to 30%. The ratio of the longitudinal inlet / outlet zone Y10 to the inlet / outlet separation zone X10, water-blocking dam X20, and outlet / merging zone X30 remains unchanged in both the integrated circulation system and the sewage discharge integrated system. Moreover, the water-blocking dam X20 allows for normal navigation of vessels, 24-hour unmanned operation, and the sluice gate water level rises and falls with the river water level.

[0071] The specific embodiments of the present invention have been described in detail above, but they are merely examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to the present invention are also within the scope of the present invention. Therefore, all equivalent transformations and modifications made without departing from the spirit and scope of the present invention should be covered within the scope of the present invention.

Claims

1. A river dirty water backflow discharge ecological circulation system, characterized in that, It comprises four parts: a longitudinal inlet / outlet zone located between the left and right banks of the river and arranged vertically; a first longitudinal treatment zone; a second longitudinal treatment zone; and a transition zone for turning and reversing water flow. The longitudinal inlet and outlet water zones are longitudinally located at the river level, and their front and rear ends as well as their bottoms are open, forming the water inlet for water distribution, the water inlet for turning water, the water outlet for backflow, and the water outlet for water merging in the ecological cycle system, respectively; the first longitudinal treatment zone, the second longitudinal treatment zone, and the water inlet and backflow transition zone are longitudinally located at the bottom of the river, and the front and rear ends and bottom edges of the areas they form are closed. Along the direction of the river's water flow, an inlet water separation zone, a water-blocking dam, and an outlet water merging zone are formed in the longitudinal water inlet and outlet zones. Along the direction of the river's water flow, several corresponding filtration units and hydroelectric units are set in the first and second longitudinal treatment zones below, forming a U-shaped backflow discharge channel with the inlet water separation zone as the inlet, the turning water and backflow transition zone as the turning guide, and the outlet water merging zone as the outlet. In the first and second longitudinal processing zones, below the inlet water separation zone and the outlet water merging zone, there are several filtration units and water-electricity units arranged at intervals; and there are two filtration units, which are respectively arranged on both sides of the water inlet of the water-electricity unit. Below the water inlet water distribution zone, in the first longitudinal treatment zone and the second longitudinal treatment zone, there are spaced-apart first filter power generation water distribution channels and second filter power generation water distribution channels, and mud and gravel water distribution channels, turbid water distribution channels and normal water distribution channels are formed on both sides and between the first filter power generation water distribution channels and the second filter power generation water distribution channels.

2. The river sewage backflow and discharge ecological cycle system according to claim 1, characterized in that, In the first and second longitudinal processing zones, corresponding to the positions below the water-blocking dam, there are corresponding filter units and water-electricity units; and the rear end of the top water inlet of the water-electricity unit is sealed to the water-blocking dam, and the front end of the top water inlet is connected to the water-blocking dam through the filter unit.

3. The river sewage backflow and discharge ecological cycle system according to claim 1, characterized in that, The first filtration and power generation water distribution channel includes a first filter leaf, a first hydroelectric workshop, a second filter leaf, and a second hydroelectric workshop, which are sequentially connected between the longitudinal inlet / outlet water zone and the transition zone for turning and reversing water, wherein: The first filter leaf and the first water and electricity workshop are located in the first longitudinal treatment area, and the top inlet of the first filter leaf is connected to the longitudinal water inlet and outlet area, and the side walls are connected to the mud and gravel water distribution channel and the turbid water water distribution channel. The second filter leaf and the second hydroelectric workshop are located within the second longitudinal treatment zone, and the top inlet of the second filter leaf is connected to the bottom outlet of the first hydroelectric workshop, while the side walls are connected to the mud and gravel diversion channel and the turbid water diversion channel.

4. The river sewage backflow and discharge ecological cycle system according to claim 1, characterized in that, Below the water-blocking dam, within the first and second longitudinal treatment zones, there are regulating water areas and a third filtration and power generation water distribution channel, wherein: The regulating water area is connected to the normal water distribution channel on the left and to the third filter power generation water distribution channel on the right through the fifth filter leaf window. The right side of the third filter power generation water distribution channel is closed to the outlet water merging area. The third filtration power generation water distribution channel includes a fifth hydropower workshop located in the second longitudinal treatment zone and a fifth filter leaf window arranged laterally between the top left side of the fifth hydropower workshop and the water-blocking dam.

5. The river sewage backflow and discharge ecological cycle system according to claim 1, characterized in that, Below the effluent merging zone, in the corresponding second longitudinal treatment zone and first longitudinal treatment zone, there are spaced fourth and fifth filter power generation water distribution channels, and normal water merging channel, turbid water merging channel and silt and gravel merging channel are formed on both sides and between the fourth and fifth filter power generation water distribution channels.

6. The river sewage backflow and discharge ecological cycle system according to claim 1, characterized in that, In the direction of water flow in the inlet water diversion zone, the water flow rate from the inlet water diversion zone directly to the outlet water merging zone through the water-blocking dam is 33%; and in the direction of water flow in the longitudinal inlet and outlet water zones, the water flow rate from the inlet water diversion zone downward to the turning water and backflow transition zone is 67%.

7. The river sewage backflow and discharge ecological cycle system according to claim 1, characterized in that, In the longitudinal water flow direction of the inlet and outlet water zones, the width of the inlet water zone accounts for 35%, the width of the water-blocking dam accounts for 30%, and the width of the outlet water merging zone accounts for 35%.

8. A method for ecological recycling of polluted river water through backflow and discharge, characterized in that, Includes the following steps: S1, constructing an ecological cycle system for the backflow and discharge of polluted water in rivers as described in any one of claims 1 to 7 between the left and right banks of the river, including longitudinally arranged inlet and outlet water zones, a first longitudinal treatment zone, a second longitudinal treatment zone, a turning water and backflow transition zone, as well as an inlet water diversion zone, a water-blocking dam, an outlet water merging zone, and corresponding transverse flow channels. S2, after the polluted water from the river flows longitudinally into the inlet water diversion zone, part of the water flows through the water-blocking dam to the outlet water-merging zone, while the other part of the water, blocked by the water-blocking dam, flows sequentially downward into the mud and gravel diversion channel, the first filtration and power generation diversion channel, the polluted water diversion channel, the second filtration and power generation diversion channel, and the normal water diversion channel for the first stage of graded treatment, and then collects in the turning water and backflow transition zone. S3, the primary turbid water collected in the turning water and backflow transition zone flows upward into the normal water merging channel, the fourth filtration and power generation water distribution channel, the turbid water merging channel, the fifth filtration and power generation water distribution channel and the mud and gravel merging channel for secondary classification treatment, and then collects in the outlet merging zone and is discharged from the outlet.

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