Sediment cascade treatment system suitable for uneven ground

Abstract

The application discloses a kind of mud sand cascade processing systems suitable for no flat site, belong to water treatment technical field.Processing system includes: control module and sequentially set on water pipe channel and all with control module connection water intake module, water body overflow screening module, multiple sand settling module, sand carrying water module and water supply module;Water intake module is used to the selective use of water body;Water body overflow screening module is used to screen water body into slurry turbid water and sand-containing suspended water body;Multiple sand settling module is used to precipitate slurry turbid water;Sand carrying water module is used to realize long-distance sand carrying water of water pipe channel;Water supply module is used to supply water to water scene.The application is suitable for terrain limited, fragmented water intake engineering, without large flat site, can realize mud sand accurate sorting and cascade processing, reduce maintenance cost, improve mud sand resource utilization rate and water supply stability.

Description

Technical Field

[0001] This invention relates to a sediment cascade treatment system adapted to uneven sites, belonging to the field of water treatment technology. Background Technology

[0002] With the acceleration of industrialization, water resources, as a factor of production, have driven the development of various water intake projects. Water intake projects are often built along rivers, characterized by varied terrain and the lack of large areas of flat land.

[0003] For water resources with high sediment content, which contain sediment components of varying particle sizes, tiered treatment and purification can be implemented by combining water quality control for different water use scenarios with the different characteristics of various sediment components, thereby improving the utilization value of water resources with high sediment content.

[0004] Currently, water intake projects in areas with limited space cannot accommodate traditional large-scale centralized sedimentation tanks. Conventional horizontal flow sedimentation tanks quickly become severely silted up after a short period of operation, rapidly losing their sedimentation function and requiring frequent dredging, repairs, and maintenance. This not only significantly increases operating costs but also fails to guarantee the continuity and stability of the water supply system. Therefore, current water intake projects can only perform simple and crude sediment removal operations, unable to perform graded and refined treatment of sediment of different particle sizes. This results in a large amount of high-sediment-content water bodies being unusable due to substandard water quality, leading to water resource idleness and waste, and limiting the large-scale development and efficient utilization of water resources. Summary of the Invention

[0005] This invention provides a sediment cascade treatment system adapted to areas without flat sites, which can solve the problem that water intake projects in areas with limited sites cannot deploy traditional large-scale centralized sedimentation tanks. This invention is suitable for water intake projects with limited terrain and fragmentation, and can achieve accurate sediment sorting and cascade treatment without the need for large flat sites.

[0006] This invention provides a sediment cascade treatment system adapted to uneven sites. The treatment system includes: a control module and a water intake module, a water overflow screening module, multiple sedimentation modules, a sediment-carrying water conveyance module, and a water supply module, which are sequentially arranged on the water conveyance pipeline and connected to the control module.

[0007] The water intake module includes a monitoring module and a gate, both of which are installed at the inlet of the water conveyance pipeline for selective water intake. The monitoring module is used to monitor the sediment content of the water before the inlet of the water conveyance pipeline. When the sediment content of the water exceeds a preset threshold, the control module is triggered. The gate is used to open or close the inlet of the water conveyance pipeline under the control of the control module.

[0008] The water overflow screening module is located downstream of the water inlet of the water conveyance pipeline and is used to screen the water into muddy water and sandy suspended water.

[0009] The multiple sedimentation modules are distributed downstream of the water overflow screening module to settle the muddy water.

[0010] The sediment-carrying water conveyance module includes an adjustment unit, which is located downstream of the plurality of sedimentation modules and is used to adjust the flow velocity parameters under the control of the control module so as to convey the sediment-laden suspended water body carrying sediment.

[0011] The water supply module is located downstream of the sediment-laden water conveyance module and is used to supply the sediment-laden suspended water to the water-demanding scenario under the control of the control module.

[0012] Furthermore, the sediment-carrying water conveyance module also includes multiple water conveyance pipeline monitoring units and multiple sediment discharge valves;

[0013] Multiple monitoring units for the water conveyance pipeline are respectively installed in the horizontal and upward sections of the water conveyance pipeline to monitor sediment information. When the sediment information reaches a preset threshold, the control module is triggered.

[0014] Multiple sand discharge valves are located downstream of the sedimentation module and are arranged along the water supply pipeline at preset intervals. Each sand discharge valve is connected to the corresponding water supply pipeline monitoring unit through the control module and is used to discharge sand under the control of the control module.

[0015] Furthermore, the water-required scenarios include one or more of the following: irrigation scenarios, drip irrigation scenarios, and domestic and industrial scenarios.

[0016] Furthermore, when the water-requiring scenario is a drip irrigation scenario, the treatment system also includes a filter;

[0017] The filter is located downstream of the water supply module and is used to filter the water containing suspended sand.

[0018] Furthermore, when the water demand scenario is a domestic or industrial scenario, the treatment system also includes a water plant pre-sedimentation module and a purification module;

[0019] The water plant pre-sedimentation module is connected to the sand-containing suspended water body transported by the water supply module, and is used to settle the silt in the sand-containing suspended water body;

[0020] The purification module is connected to the water plant pre-sedimentation module and is used to purify the sand-containing suspended water.

[0021] Furthermore, the water overflow screening module is an overflow weir.

[0022] Furthermore, the system also includes a drainage module;

[0023] The drainage module is connected to the water supply pipeline and is used to drain the water accumulated in the water supply pipeline.

[0024] Furthermore, the flow velocity parameters include the cross-sectional dimensions of the water conveyance pipeline, the laying slope, and the pipeline resistance.

[0025] Furthermore, the sediment information includes one or more of the following: sediment volume, pressure, sedimentation location, and sedimentation degree.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The sediment cascade treatment system adapted for uneven sites provided by this invention comprises a control module and sequentially connected water intake module, water overflow screening module, multiple sedimentation modules, sediment-carrying water conveyance module, and water supply module, forming a miniaturized, distributed cascade treatment system. The water intake module selectively extracts water; the water overflow screening module pre-screens the water into turbid mud and sediment-laden suspended water; multiple sedimentation modules centrally settle the turbid mud; the sediment-carrying water conveyance module adjusts the flow rate parameters under the control of the control module to transport the sediment-laden suspended water; and the water supply module purifies and supplies water according to different water demand scenarios. The system also includes a drainage module to drain accumulated water from the water supply pipelines during system shutdown and maintenance. This treatment system eliminates the need for large, centralized sedimentation tanks, enabling precise sorting and tiered treatment of sediment in fragmented water intake projects along the Yellow River where flat sites are scarce. It effectively overcomes the drawbacks of traditional processes, such as easy siltation, high maintenance costs, and resource waste caused by indiscriminate sediment treatment. This significantly reduces maintenance costs and improves sediment resource utilization and water supply stability. Therefore, this invention is particularly suitable for water intake projects with limited terrain and irregular sites, possessing outstanding practical value and broad application prospects. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a sediment cascade treatment system adapted to uneven terrain, provided by the present invention.

[0029] In the diagram: 10. Control module; 11. Water overflow screening module; 12. Multiple sedimentation modules; 13. Sediment-carrying water conveyance module; 14. Water supply module; 15. Drainage module; 16. Water intake module. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the embodiments, but the present invention is not limited to these embodiments.

[0031] This invention provides a sediment cascade treatment system adapted to uneven terrain, such as... Figure 1 As shown, the treatment system includes a control module 10 and a water intake module 16, a water overflow screening module 11, multiple sedimentation modules 12, a sediment-carrying water conveyance module 13, and a water supply module 14, which are sequentially arranged on the water conveyance pipeline and connected to the control module.

[0032] The control module 10 is connected to the water intake module 16, the water overflow screening module 11, multiple sedimentation modules 12, the sediment-carrying water conveyance module 13, and the water supply module 14, respectively, and is used to control the start and stop of the treatment system.

[0033] The water intake module 16 includes a monitoring module and a gate, both of which are installed at the inlet of the water conveyance pipeline for selective water intake. The monitoring module monitors the sediment content of the water before the inlet of the water conveyance pipeline. When the sediment content of the water exceeds a preset threshold, the control module 10 is triggered.

[0034] The gate is installed at the inlet of the water conveyance pipeline and is used to open or close the inlet of the water conveyance pipeline under the control of the control module 10.

[0035] The monitoring module and gate are set up because water with a low sediment content can be selectively taken from the intake section. Water with a high sediment content, a high proportion of coarse-grained sediment, and a disordered overall sediment gradation will significantly reduce the treatment effect of the treatment system provided in this embodiment of the invention, and such water has no practical value. Therefore, when the monitoring module detects that the sediment content of the water is greater than a preset threshold, the control module 10 is triggered to automatically close the gate to prevent the disordered water from entering the water inlet of the water conveyance pipeline. When the monitoring module detects that the sediment content of the water is less than the preset threshold, the sediment particle size distribution of this water is uniform and the gradation is stable. Therefore, the control module 10 opens the gate to allow this stable water to enter the treatment system. This ensures from the source that the water entering the treatment system can be smoothly and efficiently treated in stages based on particle size differences, adapting to the operating load of a small-scale distributed treatment system. In this embodiment of the invention, a preset threshold of 60 kg / m³ is used as an example. This preset threshold can be flexibly adjusted according to specific operating conditions.

[0036] In this embodiment of the invention, coarse sand refers to silt with a particle size > 0.5 mm; silt with a particle size ≤ 0.5 mm is referred to as fine sand and micro-suspended particles. The water entering the treatment system through the inlet of the water conveyance pipeline contains a mixture of silt, including coarse sand, fine sand, and micro-suspended particles.

[0037] The water overflow screening module 11 is located downstream of the water inlet of the water conveyance pipeline and is used to screen the water entering the water inlet of the water conveyance pipeline into muddy water and sandy suspended water.

[0038] Specifically, in this embodiment of the invention, the water overflow screening module 11 can be configured as an overflow weir, and the elevation of the overflow weir can be set according to actual needs.

[0039] The water entering the water overflow screening module 11 can form a stable vertical stratification structure in a short time due to the different settling velocities of different particle sizes of sediment, thus achieving rapid separation of coarse and fine sediment: large-particle coarse sand has a greater self-weight and a significant settling tendency, so it sinks quickly and accumulates at the bottom of the water body, forming a bottom flow of high-concentration coarse sand turbid water, which is called muddy turbid water; fine sand and micro-suspended particles with a smaller particle size have stronger suspension performance and are evenly distributed in the upper water body, forming a surface water body with uniform sediment gradation and excellent cleanliness, which is called sand-containing suspended water body.

[0040] Specifically, by accurately calculating and calibrating the elevation of the overflow weir, only the upper layer of homogeneous and clean suspended water containing sand is intercepted and transported downstream, thus preventing most of the large-diameter coarse sand from entering the downstream in advance. This eliminates equipment wear and mesh blockage caused by coarse sand at the source, completing the first fine diversion and screening operation of mixed sediment.

[0041] Multiple sedimentation modules 12 are distributed downstream of the overflow screening module 11 of the water body for sedimentation of muddy water.

[0042] In this embodiment of the invention, each sedimentation module 12 is a small sedimentation pond set up based on the natural terrain drop distribution on site. It does not require continuous flattening of the site or large-scale earthwork modification, and can be adapted to engineering scenarios with undulating terrain and scattered and limited land use.

[0043] The turbid mud obtained after screening by the water overflow screening module 11 enters multiple sedimentation modules, meaning all the turbid mud is directed into individual small sedimentation tanks. In each sedimentation tank, the large-diameter coarse sand in the turbid mud settles rapidly under gravity. This coarse sand is hard, has low mud content, and few impurities. After simple screening and impurity removal, it can be directly reused as construction sand, realizing the resource utilization of solid waste and turning waste into treasure. After the large-diameter coarse sand in the turbid mud settles, the residual water in the sedimentation tank only contains fine sand and micro-suspended particles with uniform particle size and stable physicochemical properties. At this point, the treatment system has completed the removal of large-diameter coarse sand, achieving refined classification and treatment of coarse and fine mud.

[0044] The residual water after sedimentation by multiple sedimentation modules 12 flows into the main water conveyance system and merges with the sediment-laden suspended water from the water overflow screening module to be conveyed to the sediment-laden water conveyance module 13.

[0045] The sediment-laden water conveyance module 13 includes an adjustment unit located downstream of multiple sediment settling modules 12. This adjustment unit, under the control of the control module 10, adjusts the flow velocity parameters of the sediment-laden suspended water to ensure that the water is transported downstream to the water supply module via a long-distance water conveyance pipeline. Specifically, the flow velocity parameters include the cross-sectional dimensions, laying slope, and pipeline resistance of the water conveyance pipeline. The pipeline resistance mainly involves the resistance at points where the cross-sectional dimensions change and at bends in the pipeline.

[0046] Because long-distance water conveyance pipelines accumulate silt and the siltation locations are distributed in multiple points, the silt-carrying water conveyance module 13 also includes multiple water conveyance pipeline monitoring units and multiple silt discharge valves.

[0047] Multiple monitoring units for water conveyance pipelines are respectively installed in the horizontal and rising sections of the pipelines, and can also be installed in other areas prone to siltation. These monitoring units monitor silt information in the water. When the monitored silt information reaches a preset threshold, a control module is triggered, causing the control module to control the corresponding silt discharge valve to discharge silt. This silt information includes silt volume, pressure, siltation location, and siltation degree. The preset threshold can be that the siltation area is greater than a preset siltation area, or the siltation volume reaches a preset siltation volume, or the pressure in a section of the pipeline exceeds a preset pressure value, or the siltation location is a special location such as a bend in the pipeline. This embodiment of the invention does not limit the specific selection of the preset threshold.

[0048] Multiple sand-discharging valves are located downstream of the sedimentation module and are arranged along the water conveyance pipeline at preset intervals. Each sand-discharging valve is connected to the corresponding water conveyance pipeline monitoring unit via a control module, and is used to discharge sand under the control of the control module. When the sediment information monitored by the water conveyance pipeline monitoring unit reaches a preset threshold, the corresponding sand-discharging valve is opened through the control module to discharge sand. Thus, the sand-carrying water conveyance module 13 enables the system to complete dredging operations without interrupting normal water conveyance. In this embodiment, the preset interval is 3 to 5 kilometers, which can be set according to the actual engineering conditions.

[0049] Thus, the water flow can be precisely controlled through the sediment-carrying water transport module 13 to maintain the optimal sediment-carrying transport conditions, ensuring that fine particles of sediment are always in a uniform suspended transport state, effectively avoiding problems such as fine sand accumulation, agglomeration, and secondary stratification, and reducing the waste of beneficial sediment settling.

[0050] The water supply module 14 is located downstream of the sediment-laden water conveyance module 13 and is used to supply sediment-laden suspended water to the water demand scenario under the control of the control module 10.

[0051] Specifically, the suspended water containing sand is transported over long distances through water conveyance pipelines and enters the water supply module 14. This water supply module 14 can provide differentiated water supply based on the particle size and content of the remaining fine sediment in the water body, combined with the water quality requirements of different water demand scenarios, to achieve on-demand tiered, precise adaptation, and efficient water use across the entire area.

[0052] In this embodiment of the invention, the water-requiring scenario includes one or more of the following: irrigation scenario, drip irrigation scenario, and domestic and industrial scenario.

[0053] The irrigation scenario is the same as conventional farmland irrigation. The fine sand and micro-suspended particles in the sediment-laden water are rich in natural mineral nutrients, which can sustainably nourish the soil, improve farmland structure, and enhance soil fertility without causing equipment damage. Therefore, sediment-laden water does not require secondary purification treatment and can be directly delivered to the fields, leveraging its water and fertilizer retention, yield-increasing, and income-generating functions. This achieves the resource utilization of fine sediment to enrich the soil, improving the comprehensive utilization efficiency of water resources and the planting value of farmland.

[0054] Because ultrafine suspended particles remain in the water, filters are installed downstream of the water supply module in drip irrigation scenarios to filter out the sand-containing suspended water. For example, small precision filters can be installed at the end of the field to accurately intercept ultrafine suspended particles, improve water cleanliness, and prevent clogging of the micropores in the fine irrigation network.

[0055] In both residential and industrial settings, the treatment system also includes a pre-sedimentation module and a purification module connected in sequence. The pre-sedimentation module is connected to the sediment-laden water supplied by the water supply module 14 and is used to settle the sediment in the water. The purification module is connected to the pre-sedimentation module and is used to purify the sediment-laden water. In this embodiment, the sediment-laden water after cascade treatment is first fed into the pre-sedimentation module for sedimentation, and then the water is fed into the purification module for deep purification of trace colloidal particles, ensuring that the water quality meets standards before being used for urban residential and industrial water supply.

[0056] Thus, the treatment system fully realizes the full-size tiered treatment process of sediment, including "complete removal of coarse sand, irrigation and on-demand application of fine sand, and precise filtration of micro-sand".

[0057] In practical applications, after a period of use, the treatment system needs to be shut down for maintenance periodically or switched to different operating conditions. Therefore, the treatment system also includes a drainage module 15. The drainage module 15 is connected to the water supply pipeline. When the treatment system is shut down for maintenance or the operating conditions are switched, the stagnant water inside the water supply pipeline is drained. This effectively prevents fine particles of sediment from settling and agglomerating, disrupting the original sediment particle size structure of the water body, and preventing the reduction of the graded treatment accuracy after the treatment system is restarted. This ensures the long-term accurate, stable and efficient operation of the entire sediment cascade treatment system.

[0058] The sediment cascade treatment system adapted to uneven sites provided by this invention comprises a control module 10 and sequentially connected water intake module 16, water overflow screening module 11, multiple sedimentation modules 12, sediment-laden water conveyance module 13, and water supply module 14, forming a miniaturized, distributed cascade treatment system. The water intake module 16 selectively extracts water; the water overflow screening module 11 pre-screens the water into turbid mud and suspended sediment; the multiple sedimentation modules 12 centrally settle the turbid mud; the sediment-laden water conveyance module 13 adjusts the flow rate parameters under the control of the control module to achieve long-distance sediment-laden water conveyance in the water pipeline; and the water supply module 14 purifies and supplies water according to different water demand scenarios. The system also includes a drainage module 15 to drain accumulated water from the water pipeline during system shutdown and maintenance. This treatment system eliminates the need for large, centralized sedimentation tanks, enabling precise sorting and tiered treatment of sediment in water intake projects with fragmented land use and lack of level ground. It effectively overcomes the drawbacks of traditional processes, such as easy siltation, high operation and maintenance costs, and resource waste caused by indiscriminate sediment treatment. This significantly reduces operation and maintenance costs and improves sediment resource utilization and water supply stability. Therefore, this invention is particularly suitable for water intake projects with limited terrain and irregular sites, possessing outstanding practical value and broad application prospects.

[0059] The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A sediment cascade treatment system adapted to uneven terrain, characterized in that, It includes a control module and a water intake module, a water overflow screening module, multiple sedimentation modules, a sediment-carrying water conveyance module, and a water supply module, which are sequentially arranged on the water conveyance pipeline and connected to the control module. The water intake module includes a monitoring module and a gate, both of which are installed at the inlet of the water conveyance pipeline for selective water intake. The monitoring module is used to monitor the sediment content of the water before the inlet of the water conveyance pipeline. When the sediment content of the water exceeds a preset threshold, the control module is triggered. The gate is used to open or close the inlet of the water conveyance pipeline under the control of the control module. The water overflow screening module is located downstream of the water inlet of the water conveyance pipeline and is used to screen the water into muddy water and sandy suspended water. The multiple sedimentation modules are distributed downstream of the water overflow screening module and are used to settle the muddy water; the sedimentation module is a sedimentation tank. The sediment-carrying water conveyance module includes an adjustment unit; the adjustment unit is located downstream of the plurality of sedimentation modules and is used to adjust the flow velocity parameters under the control of the control module so as to convey the sediment-laden suspended water body. The water supply module is located downstream of the sediment-laden water conveyance module and is used to supply the sediment-laden suspended water to the water-demanding scenario under the control of the control module. The water-demand scenarios include one or more of the following: irrigation scenarios, drip irrigation scenarios, and domestic and industrial scenarios. When the water demand scenario is a drip irrigation scenario, the treatment system further includes a filter; the filter is located downstream of the water supply module and is used to filter the sand-containing suspended water. When the water demand scenario is a domestic or industrial scenario, the treatment system further includes a water plant pre-sedimentation module and a purification module; The water plant pre-sedimentation module is connected to the sand-containing suspended water body transported by the water supply module, and is used to settle the silt in the sand-containing suspended water body; the purification module is connected to the water plant pre-sedimentation module, and is used to purify the sand-containing suspended water body.

2. The processing system according to claim 1, characterized in that, The sediment-carrying water conveyance module also includes multiple water conveyance pipeline monitoring units and multiple sediment discharge valves; Multiple monitoring units for the water conveyance pipeline are respectively installed in the horizontal and upward sections of the water conveyance pipeline to monitor sediment information. When the sediment information reaches a preset threshold, the control module is triggered. Multiple sand discharge valves are located downstream of the sedimentation module and are arranged along the water supply pipeline at preset intervals. Each sand discharge valve is connected to the corresponding water supply pipeline monitoring unit through the control module and is used to discharge sand under the control of the control module.

3. The processing system according to claim 1, characterized in that, The water overflow screening module is an overflow weir.

4. The processing system according to claim 1, characterized in that, The system also includes a drainage module; The drainage module is connected to the water supply pipeline and is used to drain the water accumulated in the water supply pipeline.

5. The processing system according to claim 1, characterized in that, The flow velocity parameters include the cross-sectional dimensions of the water conveyance pipeline, the laying slope, and the pipeline resistance.

6. The processing system according to claim 2, characterized in that, The sediment information includes one or more of the following: sediment volume, pressure, siltation location, and siltation degree.

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