A segmented, graded and quality type pollution interception and water resource recycling system suitable for rain source type lake-entering rivers

Abstract

The utility model discloses a kind of pollution interception and water resource recycling system suitable for rain source type into lake river's segmentation, grading, quality type, including four big modules of segmented interception, grading regulation and storage, quality utilization and whole process regulation and control.Segmented interception module is constituted by at least three interception units being set along river channel, each unit contains interception facility, pump station and grate device;Grading regulation and storage module includes different elevation's regulation and storage facilities, and is equipped with water level sensor and external regulation emergency pipeline;Quality utilization module includes reuse pipeline, purification facility and water quality monitoring station;Whole process regulation and control module takes PLC controller as core, realizes centralized control by signal connection.System realizes pollution segmented interception, resource grading regulation and storage and quality reuse by module cooperation, with the advantages of high interception efficiency, high resource utilization, high intelligent degree and low operating cost.

Description

Technical Field

[0001] This utility model relates to the field of water environment management and water resource recycling technology, specifically to an integrated system for segmented pollution interception, graded storage, quality-based utilization and full-process regulation of rain-source rivers flowing into lakes. Background Technology

[0002] Rain-fed rivers flowing into lakes serve as key carriers of lake ecological replenishment and land-based pollution input, and their treatment effectiveness directly determines the progress of lake water quality improvement. These rivers are characterized by the absence of a continuous water source at their head, large seasonal fluctuations in water volume, and a high proportion of pollution load.

[0003] Currently, existing governance solutions mostly focus on achieving a single function. A combined search of Chinese patent databases using keywords such as "segmented interception," "graded storage," and "differentiated utilization" did not reveal any patent documents that disclose a systematic solution involving the synergy of the above three elements.

[0004] The existing technologies have the following limitations: (1) Limited functionality: For example, some technologies only focus on end-point interception or storage capacity allocation, lacking quality-based reuse and full-process regulation of water resources, resulting in poor treatment effect and easy secondary pollution; (2) Insufficient system coordination: Even if some technologies achieve water quality monitoring or local reuse, they fail to organically link segmented interception, graded storage and external emergency regulation functions, and cannot form a closed-loop management, making it difficult to cope with the impact load of the rainy season and the needs of flood control safety.

[0005] Therefore, there is an urgent need in this field for an integrated solution that can systematically integrate pollution interception, resource storage, differentiated utilization and intelligent regulation, so as to achieve the comprehensive goals of efficient pollution reduction, water resource recycling, reduced operating costs and improved management efficiency at the same time. Utility Model Content

[0006] The technical problem to be solved

[0007] In response to the technical problems of poor decentralized treatment, insufficient resource recycling, and low management efficiency caused by the lack of linkage between subsystems in the existing rain-source-type rivers flowing into lakes, this utility model provides a segmented, graded, and quality-based pollution interception and water resource recycling system.

[0008] Technical solution

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A segmented, graded, and differentiated pollution interception and water resource recycling system suitable for rainwater-sourced rivers flowing into lakes is characterized by comprising a segmented interception module, a graded storage module, a differentiated utilization module, and a full-process control module.

[0011] 1. Segmented interception module

[0012] Technical issue: This module is designed to address the problems of limited traditional end-point interception capabilities and the tendency for rivers to overflow into lakes during the rainy season.

[0013] Technical solution: The segmented interception module includes at least three interception units spaced apart along the river channel. Each interception unit includes an interception facility, a pumping station, and a bar screen device. The interception facility is a gate or a gate-like facility converted from a dam, equipped with an electric actuator. The bar screen device is equipped with an automatic slag removal mechanism. The pumping station is connected to the graded storage module through a pipeline.

[0014] 2. Tiered storage module

[0015] Technical issue: This module is used to solve the problems of uneven spatial and temporal distribution of water resources and high storage costs, so as to achieve precise scheduling and allocation of hydropower.

[0016] Technical solution: The graded storage module includes multiple storage facilities distributed at different elevations along the river; the storage facilities are in fluid communication with the pump station outlet of the segmented interception module through pipelines; the storage facilities located downstream of the river are connected to an external emergency pipeline, and the external emergency pipeline is equipped with an electric butterfly valve; each of the storage facilities is equipped with a water level sensor.

[0017] 3. Differentiated Utilization Module

[0018] Technical issue: This module is used to solve the problems of single-use of water resources and insufficient replenishment of qualified water bodies, so as to realize the classified utilization of water resources.

[0019] Technical solution: The differentiated utilization module includes a reuse pipeline connected to the storage facility and a purification facility located at the end of the river; the reuse pipeline is equipped with a reuse control valve; the purification facility includes a wetland or a water quality improvement station; the differentiated utilization module is equipped with an automatic water quality monitoring station at key locations.

[0020] 4. Full-process control module

[0021] Technical issue: This module is used to solve the problem of lack of linkage between subsystems and low management efficiency.

[0022] Technical solution: The full-process control module includes a central controller; the central controller is connected to the electric actuator of the interception facility, the pumping station, the water level sensor installed in the storage facility, the water quality monitoring station installed in the water quality separation and utilization module, the electric butterfly valve and the reuse control valve via signal lines (the signal connection includes but is not limited to wired signal lines or wireless communication networks).

[0023] Preferably, the central controller is a programmable logic controller (PLC); the water level sensor installed in the storage facility and the electric butterfly valve on the external emergency pipeline are both connected to the central controller to form an automatic emergency response mechanism.

[0024] Beneficial effects

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] 1. High pollution interception efficiency: The segmented interception module achieves step-by-step reduction of pollution load, effectively reducing the total amount of pollution entering the lake.

[0027] 2. Strong resource allocation capability: Through the hierarchical storage module, based on the principle of "high water, high use; low water, low use", the efficient spatial allocation of water resources is achieved, reducing energy consumption.

[0028] 3. High water resource utilization rate: Through the water quality classification and utilization module, water is classified for reuse and purification, ensuring a balance between agricultural irrigation and lake ecological water replenishment.

[0029] 4. High level of system intelligence: The system achieves centralized control and linkage through the full-process control module, which significantly reduces operation and maintenance costs and management difficulty.

[0030] 5. Low construction cost: The system is based on the renovation of existing facilities, which minimizes new investment and land requirements. Attached Figure Description

[0031] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0032] Figure 1 This is a schematic diagram of the overall system layout of this utility model;

[0033] Figure 2 This is a partial structural diagram of an interception unit in the segmented interception module of this utility model;

[0034] Figure 3 This is an elevation diagram illustrating the principle of graded storage and differentiated utilization of this utility model.

[0035] Figure 4 This is a block diagram of the signal control logic of the full-process control module of this utility model.

[0036] In the picture:

[0037] Figure 11—First section of the river; 2—Second section of the river; 3—Third section of the river; 4—Fourth section of the river; 5—First interception gate; 6—Second interception gate; 7—Third interception gate; 8—Fourth interception gate; 9—First pumping station; 10—Second pumping station; 11—Third pumping station; 12—Fourth pumping station; 13—Upstream storage facility; 14—Midstream storage facility; 15—Downstream storage facility; 16—Agricultural irrigation area; 17—Emergency pipeline for external transfer; 18—End-of-pipe purification facility; 19—Central control center.

[0038] Figure 2 20—Riverbed, 21—Water flow, 22—Gate, 23—Gate slot, 24—Electric actuator, 25—Gate device, 26—Pump station inlet, 27—Transportation pipeline, 28—Pump station, 29—Central control center.

[0039] Figure 3 30—Upstream regulating reservoirs, 31—Midstream regulating reservoirs, 32—Downstream regulating reservoirs, 33—Irrigation area, 34—Interception gate, 35—Pumping station, 36—Wetland, 37—Lake, 38—Emergency outward transfer direction.

[0040] Figure 4 39—PLC controller, 40—Data acquisition unit (40—1 water level sensor, 40—2 water quality monitoring station, 40—3 meteorological data interface), 41—Actuation unit (41—1 pump station frequency converter, 41—2 gate actuator, 41—3 external valve), 42—Data ledger system. Detailed Implementation

[0041] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0042] In this embodiment, the system is applied to a rain-fed river flowing into the lake, which is about 15 kilometers long, has an annual runoff of about 38 million cubic meters, has a basin topography mainly consisting of hills, and whose main pollutants are agricultural non-point source pollution and pollutants washed away by initial rainwater.

[0043] 1. System Deployment:

[0044] (1) Segmented Interception Module: The river channel is divided into four segments: Segment 1, Segment 2, Segment 3, and Segment 4 (N=4 segments). At the head of each segment, existing gates are modified as interception facilities, namely, Interception Gate 5, Interception Gate 6, Interception Gate 7, and Interception Gate 8. Figure 2As shown, each interception unit includes a riverbed 20, a water flow 21, a gate 22, and a gate slot 23, and is equipped with an electric actuator 24 to drive the gate to rise and fall. A stainless steel grating device 25 with a 50mm aperture (such as the QZ-100 type, with an automatic slag removal mechanism) is installed in front of the gate. Each interception unit is equipped with a pumping station, namely the first pumping station 9, the second pumping station 10, the third pumping station 11, and the fourth pumping station 12 (KQW series can be used). The pumping station inlet 26 is located in front of the gate, and the water is lifted to the storage facility through the pumping station 28 and the conveying pipeline 27.

[0045] (2) Tiered regulation and storage module: Based on the topographic elevation along the river, a three-tiered regulation and storage facility is set up (e.g., Figure 1 , Figure 3 Upstream regulation and storage facilities 13 (which may be reservoirs, corresponding to) are set up in the upstream area. Figure 3 30 in the middle reaches), and 14 midstream regulation and storage facilities (which can be a series of dams and ponds, corresponding to) are set up in the midstream area. Figure 3 31), downstream area shall be equipped with downstream regulation and storage facilities 15 (which may be dams or reservoirs, corresponding to...) Figure 3 (32) Each level of storage and regulation facility is connected to the outlet fluid of the corresponding pumping station via pipelines. A DN600 external emergency pipeline 17 is connected at the downstream storage and regulation facility 15. An electric butterfly valve (such as type D941X-10) is installed on this pipeline for emergency drainage or diversion, with the water flow direction as follows: Figure 3 As shown in Figure 38. Each water storage facility is equipped with a JL-800 type water level sensor (corresponding to...). Figure 4 (40-1)

[0046] (3) Differentiated utilization module: such as Figure 1 and Figure 3 As shown, reuse pipelines are drawn from upstream storage facility 13, midstream storage facility 14, and downstream storage facility 15 to transport low-pollution water to agricultural irrigation area 16 (corresponding to...). Figure 3 (33 in the middle). At the end of the river, flowing into the lake (corresponding to...) Figure 3 Upstream of section 37) is a terminal purification facility 18 (which may include an artificial wetland and a water quality improvement station, with a treatment capacity of 8,000 cubic meters per day). The treated, compliant water is used as a replenishment source for the lake. Reuse control valves are installed on the reuse pipeline, and automatic water quality monitoring stations are installed at the end of each segment of the river, the wetland inlet and outlet, and multiple key points along the reuse pipeline (corresponding to...). Figure 4 (40-2)

[0047] (4) Full-process control module: The core of the system's control, such as Figure 1 and Figure 4As shown. The central control center (19) (with an internal PLC controller (39, such as Siemens S7-1200)) connects to all monitoring and execution devices via RS485 bus and 4G / 5G wireless network (such as EC20 data transmission unit). The data acquisition unit 40 is responsible for collecting signals from the water level sensor 40-1, water quality monitoring station 40-2, and meteorological data interface 40-3, etc.; the execution unit 41 drives the pump station frequency converter 41-1, gate actuator 41-2, and external regulating valve 41-3, etc., according to the control commands. All operating data are recorded in the data ledger system 42 to realize the automated monitoring and linkage operation of the entire system.

[0048] 2. Operational Results: After the implementation of the system, through the synergistic effect of segmented interception, graded storage, quality-based utilization, and full-process regulation, the system has effectively reduced the initial rainwater pollution load and promoted the recycling of water resources, thereby reducing agricultural irrigation costs and achieving significant ecological and economic benefits.

[0049] Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model shall be included within the protection scope of this utility model.

Claims

1. A segmented, graded, and differentiated pollution interception and water resource recycling system suitable for rainwater-sourced rivers flowing into lakes, characterized in that, The system comprises a segmented interception module, a graded storage and regulation module, a differentiated utilization module, and a full-process control module, all sequentially deployed along the river's flow direction and connected via pipelines and signal lines. The segmented interception module includes at least three interception units spaced at intervals along the river channel; each interception unit includes interception facilities, a pumping station, and a bar screen. The graded storage and regulation module includes multiple storage and regulation facilities distributed at different elevations along the river, which are connected to the pumping station outlets of the segmented interception modules via pipelines. The storage and regulation facilities located downstream are connected to an external emergency pipeline, which is equipped with… The system includes an electric butterfly valve; the separation and utilization module includes a reuse pipeline connected to the storage facility and a purification facility located at the end of the river, with a reuse control valve on the reuse pipeline; the full-process control module includes a central controller, which is connected via signal lines to the electric actuator of the interception facility, the pumping station, the water level sensor located in the storage facility, the water quality monitoring station located in the separation and utilization module, the electric butterfly valve, and the reuse control valve, thereby forming a closed-loop system that achieves coordinated operation of pollution interception, resource storage, separation and utilization, and intelligent control.

2. The system according to claim 1, characterized in that, The interception facility is a gate or a gate-like facility modified from a dam, which has the function of raising and lowering the gate plate and can realize the river interception, and is equipped with an electric actuator; the bar screen device is equipped with an automatic slag removal mechanism.

3. The system according to claim 1, characterized in that, The central controller is a programmable logic controller (PLC); the purification facilities include wetlands or water quality improvement stations.

4. The system according to claim 1, characterized in that, The water level sensor installed in the storage facility and the electric butterfly valve on the external emergency pipeline are both connected to the central controller to form an automatic emergency response mechanism when the water level in the storage facility reaches a preset threshold.

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