Multistage water stacking nonmetal bioremediation fish scale pond

Abstract

The utility model provides a kind of multistage stacked water nonmetallic biological remediation fish scale pond, the fish scale pond is built on the inclined hillside, including water inlet channel, and the water pool unit of multistage distribution in turn from top to bottom, each level the water pool unit includes multiple arc-shaped pools being arranged along horizontal direction in parallel, when overlooking, multistage the arc-shaped pool is staggered distribution like fish scale;Water inlet channel is horizontally arranged on the upper end of the water pool unit of the top level, and the side wall of water inlet channel is provided with the water outlet for making water flow into the water pool unit of the top level, and the water outlet extends from the left end to the right end of the water pool unit, so that water flow is evenly flowed into each arc-shaped pool of the top level from water inlet channel;Water hole is opened in the side wall connected from the bottom of first-stage arc-shaped pool and second-stage arc-shaped pool, and flows into second-stage arc-shaped pool, the utility model can efficiently, synchronously remove organic matter, nitrogen, phosphorus and various pollutants in water, and the purification effect is far more than the purification pond of single flow state.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, specifically to a multi-stage cascading non-metallic bioremediation fish scale pond. Background Technology

[0002] Traditional wastewater treatment facilities, such as concrete-structured wastewater treatment plants, often suffer from high investment costs, large land area requirements, high energy consumption, and poor aesthetic appeal, making them unsuitable for decentralized wastewater treatment, river ecological water replenishment, and self-purification of park landscape water bodies.

[0003] Against this backdrop, ecological restoration technologies that combine physical, chemical, and biological principles, such as constructed wetlands and oxidation ponds, have been widely applied due to their advantages of low investment, low operating costs, and good ecological landscape benefits. Among them, multi-stage cascading water purification systems that mimic natural mountain waterfall landscapes enhance dissolved oxygen in the water through natural reoxygenation of cascading water, creating favorable conditions for aerobic microorganisms to degrade pollutants, thus becoming an effective purification method.

[0004] However, existing multi-stage cascading water purification systems have a simple structure and limited purification efficiency: most systems use simple rectangular or trapezoidal stepped water tanks connected in series, resulting in short water flow paths, which easily lead to short circuits. The contact time and contact area between the water and the purification medium are insufficient, resulting in low purification efficiency.

[0005] Therefore, there is an urgent need for a new type of ecological purification device that can effectively overcome the above-mentioned defects, while ensuring high-efficiency purification capabilities and possessing the characteristics of beautiful landscape, easy maintenance, and ecological sustainability. Utility Model Content

[0006] In order to overcome the problems existing in the background technology, this utility model provides a multi-stage cascading non-metallic bioremediation fish scale pond to solve the technical problems of the existing multi-stage cascading water purification system having a single structure, limited purification efficiency, and low purification efficiency.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: A multi-tiered, non-metallic bioremediation fish-scale pond is constructed on a sloping land. It includes an inlet channel 1 and multiple tiered pool units arranged sequentially from top to bottom. Each tier comprises multiple horizontally arranged arc-shaped pools 2, which, when viewed from above, appear to be arranged in a fish-scale pattern. The inlet channel 1 is horizontally positioned at the top of the uppermost pool unit. The sidewall of the inlet channel 1 has an outlet 3 that allows water to flow into the uppermost pool unit. The outlet 3 extends from the left to the right end of the first-tier pool unit, ensuring a uniform flow of water from the inlet channel 1 into each of the uppermost arc-shaped pools 2. Water from the inlet channel 1 flows into the first-tier pool unit, and openings are made in the sidewall connecting the bottom of the first-tier arc-shaped pool 2 to the second-tier arc-shaped pool 2. The water flows into the second-stage arc-shaped pool 2 through the water passage 4. The water in the second-stage arc-shaped pool 2 flows upward and overflows from the top edge of the arc-shaped pool 2 into the third-stage arc-shaped pool 2. The water in the third-stage arc-shaped pool 2 flows through the water passage 4 at the bottom into the fourth-stage arc-shaped pool 2. The water in the fourth-stage arc-shaped pool 2 overflows upward from the top edge into the fifth-stage arc-shaped pool 2. The subsequent pool units are configured with water passage 4 in this way, so that the water flows in a wave-like pattern through each pool unit. The first-stage pool unit with upward water flow is the upward unit, and the first-stage pool unit with downward water flow is the downward unit. The arc-shaped pool 2 is provided with multiple layers of filter plates 5 with filter holes, and each layer of filter plate 5 is filled with filter material for filtering and purifying the water.

[0008] Preferably, the lowest level water tank unit is the water storage tank 6.

[0009] Preferably, the fish scale pool is provided with water-retaining walls 7 on both sides to prevent water from flowing away from the sides. Preferably, the filter plates 5 in the upper arc-shaped pools 2 of the entire fish scale pond are covered with pebbles, coarse gravel, and fine gravel for physical filtration of the water; the filter plates 5 in the middle arc-shaped pools 2 are covered with bio-adsorption materials; and the filter plates 5 in the lower arc-shaped pools 2 are covered with chemical adsorption materials.

[0010] Preferably, the pebbles, coarse gravel, and fine gravel are laid sequentially on different filter plates 5 according to the water flow direction of each water tank unit, so that physical impurities in the water are gradually filtered from coarse to fine. The bio-adsorption material is composed of at least one of porous suspended filler, zeolite, biochar, ceramsite, or wet cubic material, and is laid on different filter plates 5. Aquatic remediation plants are also planted in the uppermost layer of bio-adsorption material in the arc-shaped water tank 2. The chemical adsorption material is composed of at least one of steel slag, furnace slag, phosphorus removal zeolite, calcite, activated zeolite, biochar, attapulgite, granular activated carbon, or resin.

[0011] Preferably, each level of the arc-shaped pool 2 is provided with a sludge discharge trough 8 that runs through all the arc-shaped pools 2 in that level. The two ends of the sludge discharge trough 8 are connected to flushing pipes 9 and sludge discharge pipes 10 that extend from the water retaining walls 7 on both sides. Each flushing pipe 9 is connected to an inlet pipe 11, which is connected to a water pump 12. The water pump 12 pumps water into the sludge discharge trough 8.

[0012] Preferably, the water retaining wall 7 on the side where the sludge discharge pipe 10 is installed is equipped with an inclined sludge collection trough 13 for collecting and discharging the sludge discharged from each stage of the water tank unit.

[0013] Preferably, each of the flushing pipe 9 and sludge discharge pipe 10 is equipped with a valve 14 with an individual control switch.

[0014] Preferably, the valve 14 can be a manual valve 14 or an automatic valve 14 controlled by a controller.

[0015] The beneficial effects of this utility model are: 1. High purification efficiency and stable ecosystem: Through a unique "wave-shaped up-and-down" water flow path design, the system alternates between "upward" and "downward" flow states. When flowing upward through the top overflow, the water fully contacts the air, significantly increasing dissolved oxygen and enhancing the degradation effect of aerobic microorganisms. When flowing downward through the bottom through-holes 4, the water permeates through the filter media layer, creating a localized anoxic environment and promoting denitrification. This alternating aerobic-anoxic environment enables the system to efficiently and simultaneously remove multiple pollutants such as organic matter, nitrogen, and phosphorus from the water, achieving a purification effect far exceeding that of a single-flow purification tank.

[0016] 2. Uniform water distribution and effective utilization of volume: The horizontally set water inlet channel 1 and its long strip-shaped outlet 3 running through the left and right sides ensure that the incoming water can be evenly distributed to each arc-shaped water tank 2 at the top level. This avoids the short flow and dead zone phenomena common in traditional designs from the source, so that the purification volume of each water tank unit can be fully utilized and the overall treatment capacity can be guaranteed.

[0017] 3. Modular and Functional Filtration System: The system employs multi-layer filter plates (5) to carry filter media with different functions, achieving standardization and modularity. Physical, biological, and chemical filter media can be strategically laid in the pre-, mid-, and post-treatment water tanks according to the removal targets of different pollutants, forming a gradient purification process from coarse to fine. This design not only facilitates the filling and replacement of filter media but also allows for functional upgrades and targeted enhancements to adapt to different water purification needs.

[0018] 4. Highly efficient and thorough sludge removal, convenient maintenance: Through the continuous sludge removal trough 8 set at the bottom of each water tank, combined with independent flushing pipes 9 and sludge removal pipes 10, "cascaded and targeted" cleaning of deposited sludge is achieved. The sludge is quickly collected and discharged through hydraulic flushing, which completely solves the problems of blockage, functional decline and maintenance caused by sludge accumulation in traditional ecological purification facilities, and greatly reduces long-term operation and maintenance costs and workload.

[0019] 5. Strong structural adaptability and high landscape and ecological value: The overall structure is specially designed for sloping terrain, effectively utilizing the terrain elevation difference to achieve gravity flow without the need for additional power, making it energy-saving and environmentally friendly. The fish-scale-shaped arc-shaped pool 2 is not only structurally stable, but also forms a rich, multi-layered waterfall landscape. Combined with the aquatic plants planted in the pool, it achieves a perfect integration of sewage treatment facilities and natural landscape, possessing extremely high ecological and aesthetic value. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 .

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 .

[0022] Figure 3 This is a side cross-sectional view and a schematic diagram of the water flow path of this utility model. Detailed Implementation

[0023] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0024] like Figure 1-3 As shown, this utility model discloses a multi-stage cascading non-metallic bioremediation fish scale pond, which is constructed on a natural slope or an artificially modified slope with a certain gradient. The entire system mainly consists of an inlet channel 1, multi-stage pool units, a retaining wall 7, and a sludge removal system.

[0025] System Structure and Water Flow Path: The multi-level water tank units are distributed sequentially from top to bottom; in this example, five levels are used. Each level of the water tank unit is composed of multiple arc-shaped water tanks 2 arranged side by side along the horizontal direction. When viewed from above, the arc-shaped structures of the upper and lower levels of water tanks are distributed in an alternating fish-scale pattern. This layout increases the length of the water flow path and the turbulence effect.

[0026] The water flow path is the core of this design. The inlet channel 1 is horizontally positioned at the top of the slope, with elongated outlets 3 on its side walls, allowing water to flow evenly into the bottom of each arc-shaped pool 2 in the first stage (downward unit). Water permeates downwards in the first-stage pool, flowing into the second stage (upward unit) through the bottom water passages 4. The water in the second stage overflows from its top edge into the third stage (downward unit). This process repeats, forming a wave-like upward and downward flow. The final pool serves as a storage tank 6, collecting the final purified water.

[0027] Filtration system: Each arc-shaped water tank 2 is vertically equipped with multiple layers of perforated filter plates 5 to support the filter media. In practical implementation: The upper stages (such as the first and second stages) mainly perform physical interception functions. Pebbles, coarse gravel, and fine gravel are laid on the filter plate 5 in sequence to filter suspended solids in the water in a step-by-step manner from coarse to fine.

[0028] The intermediate stages (such as the third stage) primarily function as biodegradation filters. Porous suspended media (such as K3 media), zeolite, biochar, and other biosorbent materials are laid on filter plate 5, providing a large surface area for microbial biofilm growth. In the uppermost layer of biological filter media, aquatic remediation plants such as reeds and calamus can be planted; their roots can further absorb pollutants and enhance microbial activity. Additionally, a targeted wet cubic system (CN202221600583.8) for improving wetland or reservoir water quality can be placed in the purification layer for biological water purification.

[0029] The following stages (such as the fourth and fifth stages) mainly undertake the function of deep purification. The filter plate 5 is covered with chemical adsorption materials such as steel slag and phosphorus removal zeolite to deeply remove phosphorus and trace heavy metals from the water.

[0030] Sludge removal system: Each stage of the water tank unit has a sludge removal trough 8 running through all the arc-shaped water tanks 2 of that stage. One end of the sludge removal trough 8 is connected to a common water inlet pipe 11 via a pipe, and a high-pressure water source is provided by a water pump 12; the other end is connected to a sludge removal pipe 10, leading to the outside of the system. Outside the water retaining wall 7 on the side where the sludge removal pipe 10 is installed, an inclined sludge collection trough 13 is set up to collect the sludge discharged from each stage and guide it to a designated treatment point.

[0031] Each flushing pipe 9 and sludge discharge pipe 10 is equipped with a solenoid valve (automatic valve 14). The system can be configured with a timer controller to automatically initiate the sludge discharge procedure periodically (e.g., once a week): first, the sludge discharge valve of the previous stage is closed; then, the valve 14 of the flushing pipe 9 of this stage is opened for high-pressure flushing; finally, the valve 14 of the sludge discharge pipe 10 of this stage is opened to forcefully discharge the suspended sludge into the sludge collection tank 13. This process can be performed step by step, achieving efficient maintenance without emptying the tank or affecting the normal operation of the system.

[0032] Through the above implementation methods, this utility model successfully constructs an ecological water purification system with high purification efficiency, good hydraulic performance, convenient maintenance, and beautiful landscape, which is particularly suitable for decentralized rural sewage treatment, river ecological restoration, and park landscape water purification.

[0033] Work process: Wastewater or slightly polluted water to be treated is introduced into the inlet channel 1 at the top of the slope by pump 12 or gravity. The water flows through the through-type outlet 3 on the side wall of the channel and is evenly distributed into each of the arc-shaped pools 2 in the first stage. The water first enters the first stage (downward unit), where, under gravity, it permeates downward through the physical filter layer laid with pebbles and gravel, effectively trapping large suspended particles. Subsequently, the water flows through the water passages 4 at the bottom of the pool into the second stage (upward unit), overflowing from the top edge of the pool. After sufficient aeration and oxygenation, it enters the third stage (downward unit). In this stage, the water penetrates the bio-adsorption material layer from top to bottom, where dissolved organic matter, ammonia nitrogen, and other pollutants are efficiently degraded by the microbial membrane attached to the filter media. Afterward, the water flows through subsequent stages in an "up-down-up..." waveform path. In the final stages, the water passes through the chemical adsorption material layer, where pollutants such as phosphorus and heavy metals are deeply adsorbed and removed. After undergoing multi-stage and multi-level purification, the qualified water finally flows into the final reservoir 6, which can be used for landscaping, irrigation, or ecological replenishment.

[0034] After the system has run for a certain period, the sludge removal procedure is initiated. Water pump 12 pumps clean water into the inlet pipe 11, and valves 14 on the flushing pipe 9 of a specific stage of the water tank are opened sequentially. High-pressure clean water rushes into the sludge removal trough 8 of that stage, powerfully agitating and flushing the sludge deposited in the trough and at the bottom of the tank, suspending it. Simultaneously, valves 14 on the sludge removal pipe 10 of that stage are opened. Driven by water pressure, the suspended, thick mud-water mixture is discharged through the sludge removal pipe 10 and flows into the sludge collection trough 13 with its inclined sidewall. By performing the above flushing and removal operations stage by stage in a top-to-bottom or bottom-to-top sequence, the sludge removal of the entire system can be completed without interrupting the normal operation of the purification system.

[0035] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A multi-stage cascading non-metallic bioremediation fish scale pond, characterized in that: The fish-scale pool is constructed on a sloping hillside and includes an inlet channel (1) and multiple pool units arranged sequentially from top to bottom. Each pool unit includes multiple horizontally arranged arc-shaped pools (2). When viewed from above, the multiple arc-shaped pools (2) are arranged in an alternating fish-scale pattern. The inlet channel (1) is horizontally positioned at the top of the uppermost pool unit. The side wall of the inlet channel (1) is provided with an outlet (3) that allows water to flow into the uppermost pool unit. The outlet (3) extends from the left end to the right end of the first-level pool unit, allowing water to flow evenly from the inlet channel (1) into each arc-shaped pool (2) of the uppermost level. The water in the inlet channel (1) flows into the first-level pool unit and flows into the second-level pool unit through a water passage (4) opened on the side wall connecting the bottom of the first-level arc-shaped pool (2) to the second-level arc-shaped pool (2). In the secondary arc-shaped pool (2), the water in the second arc-shaped pool (2) flows upward and overflows from the top edge of the arc-shaped pool (2) to the third arc-shaped pool (2). The water in the third arc-shaped pool (2) flows through the water passage hole (4) at the bottom to the fourth arc-shaped pool (2). The water in the fourth arc-shaped pool (2) flows upward from the top edge to the fifth arc-shaped pool (2). The subsequent pool units are equipped with water passage holes (4) in this way, so that the water flows in the fish scale pool in a wave pattern and flows up and down through each pool unit. The first pool unit with the water flowing upward is the upward unit, and the first pool unit with the water flowing downward is the downward unit. The arc-shaped pool (2) is equipped with multiple layers of filter plates (5) with filter holes. Each filter plate (5) is filled with filter material for filtering and purifying the water.

2. The multi-stage cascading non-metallic bioremediation fish scale pond according to claim 1, characterized in that: The lowest level water tank unit is a water storage tank (6).

3. A multi-stage cascading non-metallic bioremediation fish scale pond according to claim 1 or 2, characterized in that: The fish scale pond is equipped with water-retaining walls on both sides to prevent water from flowing away from the sides (7).

4. The multi-stage cascading non-metallic bioremediation fish scale pond according to claim 1, characterized in that: The filter plates (5) in the upper arc-shaped pools (2) of the entire fish scale pond are covered with pebbles, coarse gravel, and fine gravel for physical filtration of water; the filter plates (5) in the middle arc-shaped pools (2) are covered with biological adsorption materials; and the filter plates (5) in the lower arc-shaped pools (2) are covered with chemical adsorption materials.

5. A multi-stage cascading non-metallic bioremediation fish scale pond according to any one of claims 1 and 4, characterized in that: At the bottom of each level of the arc-shaped pool (2) is a sludge discharge trough (8) that runs through all the arc-shaped pools (2) of this level. At both ends of the sludge discharge trough (8) are flushing pipes (9) and sludge discharge pipes (10) that extend from the water retaining walls (7) on both sides. Each level of flushing pipe (9) is connected to the inlet pipe (11). The inlet pipe (11) is connected to the water pump (12), and the water pump (12) pumps water into the sludge discharge trough (8).

6. The multi-stage cascading non-metallic bioremediation fish scale pond according to claim 5, characterized in that: On the side of the retaining wall (7) where the sludge discharge pipe (10) is installed, there is an inclined sludge collection trough (13) that collects and removes the sludge discharged from each water tank unit.

7. A multi-stage cascading non-metallic bioremediation fish scale pond according to claim 6, characterized in that: Each of the flush pipes (9) and sludge discharge pipes (10) is equipped with a valve (14) with a separate control switch.

8. The multi-stage cascading non-metallic bioremediation fish scale pond according to claim 7, characterized in that: The valve (14) can be a manual valve or an automatic valve controlled by a controller.

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