River inlet purification system
By setting up buffer tanks and diversion pipes at the discharge outlet, combined with sewage purification devices and movable interception barriers, the problems of poor river water quality purification and waterlogging risk were solved, achieving efficient sewage purification and anti-clogging effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 长江三峡(海南)绿色发展投资有限公司
- Filing Date
- 2025-06-12
- Publication Date
- 2026-07-31
AI Technical Summary
In existing technologies, untreated domestic sewage and industrial wastewater directly enter rivers, leading to eutrophication. Simple rainwater and sewage interception measures cannot effectively decompose pollutants, resulting in poor water purification. Furthermore, curtain-type biological fillers are prone to clogging, and the interception barriers cannot be adjusted with water level changes, increasing the risk of urban flooding.
A buffer tank and diversion pipe are installed at the outlet, combined with a sewage purification device and an interception barrier. Sewage is purified using biological ropes and biological fillers. The interception barrier is connected by floats and can move with the water level to avoid flooding.
It improves sewage purification efficiency, prevents packing blockage, ensures smooth drainage, reduces the risk of waterlogging, and achieves effective purification of river water quality.
Smart Images
Figure CN224578115U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a purification system for river discharge outlets. Background Technology
[0002] Point source pollution is the most common and important cause of black and odorous rivers. Due to inadequate sewage collection systems and combined sewer overflows, some untreated domestic sewage, industrial wastewater, and rainwater directly enter rivers, leading to increased eutrophication, severe water quality deterioration, and serious impacts on the normal lives and health of residents along the riverbanks. The most direct method for treating black and odorous river pollution sources is to seal off all rainwater and sewage outlets. However, due to limitations imposed by the planning and implementation of sewage pipe networks in the surrounding areas and the development and construction of surrounding land, complete interception of pollution is very difficult. For sewage outlets that cannot be intercepted temporarily, the main treatment measures include simple rainwater and sewage interception and the construction of enclosures in the river. However, simple rainwater and sewage interception cannot effectively decompose pollutants, often resulting in the river water quality failing to achieve the expected purification effect. River enclosure treatment mainly uses plants and curtain-type biological fillers to pre-treat sewage. The treated sewage is discharged through the outlets on the enclosure. Since the inflow load is usually high, the interception barrier usually cannot adjust its height with changes in water level. When the drainage volume is large, the enclosure hinders drainage, increasing the risk of regional flooding. In addition, the curtain-type biological filler is prone to clogging. Utility Model Content
[0003] In view of the above-mentioned prior art, the present invention provides a river discharge outlet purification system, which mainly solves the technical problems existing in the background art.
[0004] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:
[0005] A river outfall purification system comprises a wastewater purification device and an interception barrier arranged sequentially from the discharge end of the outfall into the water body. A diversion device is installed below the discharge end of the outfall, comprising a buffer trough and diversion pipes. The buffer trough is fixedly installed on the bank below the outfall via a rod. Several diversion pipes are located at the bottom of the buffer trough, with their openings aligned with the middle of adjacent wastewater purification devices. Each wastewater purification device includes a fixed rod, biological ropes, baffles, and a box with a mesh-like perforated structure. The box has a through hole in the center, and the fixed rod has a support plate. The box is rotatably assembled with the fixed rod through the through hole. The box is filled with biological filler. Two baffles are symmetrically arranged around the box, and biological ropes are distributed at equal angles along the circumference of the box between the baffles. The interception barrier is located around the wastewater purification device, with collars on both sides. These collars are slidably assembled with fixed wooden stakes, and the collars at the top of the fixed wooden stakes are connected to a float via a connecting rod.
[0006] Preferably, a debris screen is provided at the inlet of the buffer tank.
[0007] Preferably, the enclosure is made of stainless steel grating or gabion mesh.
[0008] Preferably, the lower ends of both the fixed wooden stake and the fixed rod are conical.
[0009] Preferably, the top of the fixed wooden stake is provided with a limiting plate.
[0010] Preferably, the interception barrier is a composite impermeable geotextile membrane.
[0011] Preferably, the interception barrier is arc-shaped, with both ends of the arc intersecting the revetment where the outlet is located.
[0012] Preferably, the interception barrier has a serrated overflow edge.
[0013] Preferably, the top of the fixing rod is provided with a first magnet block, and the top of the water baffle is provided with a second magnet block that attracts the first magnet block.
[0014] The beneficial effects of this utility model are as follows:
[0015] (1) By setting up a buffer tank and a diversion pipe below the discharge end of the river outlet, the discharge volume is reduced when the discharge volume is large, which plays a certain buffering role, controls the discharge volume of sewage, and improves the purification efficiency of the purification device. The diversion pipe diverts the sewage, and the diverted sewage is directed to impact the middle channel of the adjacent sewage purification device. The generated water flow impacts the baffle plate or biological rope of the sewage purification device, causing the sewage purification device to rotate. The sewage flows through the rotating biological rope and biological packing, and the sewage is purified by the biofilm attached to the surface of the packing. During the rotation, the relative motion between the sewage and the biological rope and biological packing is strengthened, the contact uniformity and mass transfer efficiency are improved, the aging biofilm is renewed in time, and the packing is prevented from being blocked.
[0016] (2) The interception barrier and the fixed wooden pile are connected by a collar. The uppermost collar is connected to the float by a connecting rod. The upper end of the interception barrier can move up and down with the water level. When the discharge flow increases sharply, the impermeable cloth that can move up and down will not affect the drainage of the discharge outlet, thus avoiding waterlogging in the area. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of a river discharge outlet purification system according to an embodiment of this application;
[0018] Figure 2 This is a schematic diagram of the diversion device in the embodiments of this application;
[0019] Figure 3 This is a schematic diagram of the structure of the fixed wooden stakes and the interception barrier in the embodiments of this application;
[0020] Figure 4 This is a schematic diagram of the wastewater purification device in the embodiments of this application;
[0021] Explanation of icon numbers:
[0022] 1. Outlet; 2. Wastewater purification device; 201. Fixing rod; 202. Biological rope; 203. Water baffle; 204. Box body; 3. Interception barrier; 4. Diversion device; 401. Buffer tank; 402. Diversion pipe; 5. Insert rod; 6. Support plate; 7. Biological packing material; 8. Ring; 9. Fixing stake; 10. Connecting rod; 11. Float; 12. Trash net; 13. Limiting plate; 14. First magnet block; 15. Second magnet block; 16. Bank protection. Detailed Implementation
[0023] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.
[0024] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0025] Example 1
[0026] Please refer to the attached document. Figure 1-4This application provides a river outfall purification system, in which a sewage purification device 2 and an interception barrier 3 are sequentially installed from the discharge end of the outfall 1 into the water body. A diversion device 4 is installed below the discharge end of the outfall 1. The diversion device 4 includes a buffer trough 401 and a diversion pipe 402. The buffer trough 401 is fixedly installed on the bank below the outfall 1 by a rod 5. A plurality of diversion pipes 402 are provided at the bottom of the buffer trough 401. The openings of the diversion pipes 402 are aligned with the middle of the adjacent sewage purification devices 2. The sewage purification device 2 includes a fixing rod 201, a biological rope 202, a water baffle 203, and a box with a mesh-like hollow structure. The body 204 has a through hole in the middle. The fixing rod 201 is provided with a support plate 6. The body 204 is rotatably assembled with the fixing rod 201 through the through hole. The body 204 is filled with biological filler 7. Two baffles 203 are symmetrically arranged on the periphery of the body 204. Biological ropes 202 are distributed at equal angles along the circumference of the body 204 between the baffles 203. The sewage purification device 2 is surrounded by an interception barrier 3. The interception barrier 3 is provided with collars 8 on both sides. The collars 8 are slidably assembled with the fixed wooden stakes 9. The collars 8 at the top of the fixed wooden stakes 9 are connected to the float 11 through a connecting rod 10.
[0027] In use, the buffer tank 401 in the diversion device 4 is first fixed below the drainage end of the inlet 1 of the river using the insertion rod 5, so that the sewage from the outlet 1 flows into the buffer tank 401. When the drainage volume is large, the buffer tank 401 can slow down the amount of sewage discharged into the river, playing a certain buffering role and controlling the amount of sewage discharged, thereby improving the purification efficiency of the purification device. The sewage enters the buffer tank 401 and is discharged into the river from the diversion pipe 402 at the bottom of the buffer tank 401. The water flow in the diversion pipe 402 is located at the bottom of the river. Fixed rods 201, arranged in an arc shape at equal intervals, are placed on the riverbed in front of the fixed rods 201. Support plates 6 are provided at the bottom of the fixed rods 201, and cylindrical boxes 204 with a mesh-like perforated structure are installed on the support plates 6. The boxes 204 are rotatably connected to the fixed rods 201, and are filled with biological filler 7. Two baffles 203 are symmetrically installed on the outer side of the boxes 204, and multiple biological ropes 202 are arranged at equal angles along the circumference of the boxes 204 between the baffles 203. The diversion pipe 402... Wastewater is diverted, and the diverted wastewater is directed to impact the middle channel of adjacent wastewater purification devices 2. The resulting water flow impacts the baffle plate 203 or biological rope 202 of the wastewater purification device 2, causing the wastewater purification device 2 to rotate. Wastewater flows through the rotating biological rope 202 and biological packing 7, and is purified by the biofilm attached to the surface of the biological rope 202 and biological packing 7. During the rotation, the relative motion between the wastewater and the biological rope 202 and biological packing 7 is enhanced, improving the uniformity of contact and mass transfer efficiency. The aging biofilm is renewed in time, preventing the packing from clogging. The interception barrier 3 is slidably connected to the fixed wooden pile 9 through a collar 8. The uppermost collar 8 is connected to the float 11 through a connecting rod 10. The float 11 is located outside the interception barrier 3. The upper end of the interception barrier 3 can move up and down with the water level. When the flow rate of the outlet 1 increases sharply, the up-and-down movable impermeable cloth will not affect the drainage of the outlet 1, avoiding regional flooding. Preferably, the biological packing material is a string of elastic biological filter balls, with its two ends fixed to the upper and lower surfaces of the tank respectively, so that it is not easy to tangle or clog under the impact of water flow.
[0028] Specifically, a debris-blocking net 12 is installed at the inlet of the buffer tank 401. The debris-blocking net 12 is a woven net made of nylon rope or polyethylene material. The net diameter should be adjusted according to the garbage that may enter from the surrounding area. It covers the inlet of the buffer tank 401 and is used to intercept larger garbage and other pollutants carried into the river through the outlet 1.
[0029] Specifically, the enclosure 204 is made of stainless steel grating or gabion mesh. Using stainless steel grating or gabion mesh to make the enclosure 204 prevents it from rusting after prolonged immersion in water, thus avoiding further pollution to the river.
[0030] Specifically, the lower ends of both the fixing stake 9 and the fixing rod 201 are conical. The conical shape facilitates the insertion of the fixing stake 9 and the fixing rod 201 into the riverbed, improving the stability of the device.
[0031] Specifically, a limiting plate 13 is provided at the top of the fixed wooden stake 9. When the flow rate of the outlet 1 increases suddenly, causing the river water level to rise, the limiting plate 13 at the top of the fixed wooden stake 9 prevents the uppermost collar 8 from sliding upward and detaching from the fixed wooden stake 9 due to the rising river water level, thereby improving the practicality of the device.
[0032] Specifically, the interception barrier 3 is a composite impermeable geotextile membrane. By separating the purification system of outlet 1 from the river water through the composite impermeable geotextile membrane, the hydraulic residence time is increased, thereby improving the purification efficiency.
[0033] Specifically, the interception barrier 3 is arc-shaped, with both ends of the arc intersecting with the revetment 16 where the outlet 1 is located. The fixed wooden piles 9 are arranged in an arc along the direction of water flow, and the interception barrier 3 is connected to the fixed wooden piles 9 in an arc-shaped distribution, with both ends of the arc intersecting with the revetment 16 where the outlet 1 is located, in order to reduce the impact force of the river flow.
[0034] Specifically, the interception barrier 3 is provided with a serrated overflow edge. When the flow rate at the outlet 1 is large, the incoming water can overflow into the river through the serrated overflow edge at the upper end of the interception barrier 3, thus preventing waterlogging in the area.
[0035] Example 2
[0036] Please refer to the appendix. Figure 1-4 The difference between this embodiment and Embodiment 1 is that a first magnet block 14 is provided at the top of the fixing rod 201, and a second magnet block 15, which attracts the first magnet block 14, is provided at the top of the baffle plate 203. By fixing a first magnet block 14 parallel to the water surface on the fixing rod 201, the second magnet block 15 on the baffle plate 203 underwater is attracted. Under the combined action of water flow impact and magnetic attraction, the rotation speed of the sewage purification device 2 is increased, thereby improving the purification efficiency of the sewage purification device 2.
[0037] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the protection scope of the stated claims.
Claims
1. A purification system for an outfall into a river, characterized in that Wastewater purification devices and interception barriers are sequentially installed from the discharge end of the outlet into the water body. A diversion device is installed below the discharge end of the outlet, and the diversion device includes a buffer tank and diversion pipes. The buffer tank is fixedly installed on the bank protection side below the outlet by inserting rods. Several diversion pipes are provided at the bottom of the buffer tank, and the openings of the diversion pipes are aligned with the middle of the adjacent wastewater purification devices. The wastewater purification device includes a fixed rod, biological ropes, water baffles, and a box with a mesh-like hollow structure. The box has a through hole in the middle, and the fixed rod has a support plate. The box is rotatably assembled with the fixed rod through the through hole. The box is filled with biological filler. Two water baffles are symmetrically arranged around the box. Biological ropes are distributed at equal angles along the circumference of the box between the water baffles. The interception barrier is set around the wastewater purification device. There are collars on both sides of the interception barrier. The collars are slidably assembled with fixed wooden piles. The collars at the top of the fixed wooden piles are connected to a float by a connecting rod.
2. The river intake purification system of claim 1, wherein, A debris screen is installed at the inlet of the buffer tank.
3. The river intake purification system of claim 1, wherein, The enclosure is made of stainless steel grating or gabion mesh.
4. The river intake purification system of claim 1, wherein, The lower ends of both the fixed wooden stake and the fixed rod are conical.
5. The river intake purification system of claim 1, wherein, The top of the fixed wooden stake is equipped with a limiting plate.
6. The river intake purification system of claim 1, wherein, The interception barrier is a composite impermeable geotextile membrane.
7. The river intake purification system of claim 1, wherein, The interception barrier is arc-shaped, with its two ends intersecting the revetment where the discharge outlet is located.
8. The river intake purification system of claim 1, wherein, The interception barrier has a serrated overflow edge.
9. The river intake purification system of claim 1, wherein, The top of the fixing rod is provided with a first magnet block, and the top of the water baffle is provided with a second magnet block that attracts the first magnet block.