Sediment Pollutant Release Simulation Device
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Solution Overview
Problem
Current methods for simulating sediment pollutant release in river channels fail to accurately reflect real-world conditions, particularly in estuarine areas with complex hydraulic conditions, leading to inadequate representation of sediment disturbance and pollutant diffusion.
Innovation Solution
A test method involving a specialized device with a leveling base, test water tank, sediment storage mechanism, and flow-making mechanism that simulates river channel erosion, allowing for precise control of water depth, flow velocity, and sediment thickness to measure pollutant release and distribution under various conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional physical model test methods (swirl, piston, oscillation) are used to simulate water disturbance, then sediment pollutant release can be studied, but the simulation does not accurately reflect real river flow conditions and creates excessive sediment disturbance
Solution Approach 1:
The patent introduces a flow-making section as an intermediary component between the water source and the test section. This section contains a flow-making groove that guides water flow to generate a controlled current in the test section without directly disturbing the sediment. The flow-making groove acts as a mediator that transforms raw water flow into a controlled current suitable for the test environment.
Solution Approach 2:
The test device is divided into distinct functional sections: a flow-making section for generating current, a test section for sediment observation, and connecting arc sections. This segmentation allows each section to perform its specific function independently - the flow-making section creates current while the test section maintains sediment stability for accurate measurement.
2Adaptability or versatility
If sediment thickness is increased to study pollutant release, then more realistic conditions are simulated, but the setup becomes more complex and harder to control
Solution Approach 1:
The sediment storage box is designed with a movable bottom plate that can be adjusted to different positions using support rods. This dynamic adjustment mechanism allows the sediment thickness to be changed easily between experiments, providing versatility without permanent structural modifications. The system transitions from a static to a dynamic configuration.
Solution Approach 2:
The sediment storage box with its movable bottom plate allows researchers to independently adjust sediment thickness according to test requirements without requiring complex external equipment. The device serves itself by providing an built-in adjustment mechanism that simplifies the setup process.
3Measurement precision
If multiple sampling ports are added to measure pollutant distribution, then measurement accuracy improves, but device complexity and operation difficulty increase
Solution Approach 1:
The sampling ports are designed with a standardized structure that serves multiple functions: they allow water sample extraction, enable pollutant concentration measurement at different depths, and can be controlled by water stop clips. This universal design reduces the need for separate components for each measurement function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method provides a more accurate simulation of sediment pollutant release, reducing disturbance and allowing for detailed analysis of pollutant concentration and vertical distribution, thereby improving the understanding of secondary pollution mechanisms and aiding in environmental management.
Implementation Method 1
the variable speed motor is installed on the leveling base, and an output shaft of the variable speed motor is connected with a bottom of the flow-making propeller to drive the flow-making propeller to rotate to simulate water flow in the flow-making section
Implementation Method 2
The movable end of the water baffle extends into the test port of the test water tank in an extended state to close the bottom of the test water tank under the driving of the roller shutter
Implementation Method 3
the flowmeter is installed above the test section
Implementation Method 4
The sedimentation and accumulation of pollutants in the sediment of rivers and lakes may move forward and diffuse to the upper water body under the action of self-diffusion and external force
Implementation Method 5
For shallow lakes and rivers that are subject to large hydrodynamic disturbances, the sediment pollutants in the water body are prone to resuspension
Data Source
AI summary
The disclosure discloses a test method for simulating sediment pollutant release under the effect of river channel erosion, which comprises preparing a test device, presetting a water depth and a flow velocity in a test water tank, and calculating a flow rate in the test water tank; paving the sediment in a sediment storage box, and covering an upper surface of the sediment with a water baffle; adding water into the test water tank until a preset water depth, starting a variable speed motor to drive a flow-making propeller to run to make the flow rate reach the required flow rate and keep the flow velocity constant; after the water flow becomes constant, the water baffle retracting to expose the surface of the sediment; opening sampling ports for layered sampling; measuring water; and respectively measuring concentration variation and vertical distribution features of sediment pollutant under different simulated power conditions.