Segmented Drainage System for Salt Load Management
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Solution Overview
Problem
Existing systems for removing surface water from traffic areas fail to effectively filter out harmful substances like road salt, leading to increased salt concentrations around plant roots, which can damage vegetation, especially in winter months.
Innovation Solution
A device with a process unit that includes both a summer and winter process, where pre-cleaned surface water is directed to vegetation in summer and diverted to a sewage system in winter, using a valve arrangement or barrier to control water distribution and prevent salt from reaching plant roots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional filter substrates are used to pre-clean surface water, then physical particles are filtered out, but salt loads are not removed and accumulate around plant roots
Solution Approach 1:
The drainage system is segmented into multiple functional outlets: a first outlet for directing pre-cleaned water to vegetation, and a second outlet for discharging water with high salt content. This segmentation allows the system to handle different water quality conditions separately, directing clean water to plants while routing salt-contaminated water to the sewer system.
Solution Approach 2:
The system dynamically adapts its drainage behavior based on seasonal conditions and water quality. During periods with lower salt content, water is directed to vegetation for irrigation. When salt loads increase (e.g., after road salting in winter), the system automatically redirects water to the sewer system, preventing salt accumulation around plant roots.
2Quantity of substance
If all pre-cleaned surface water is directed to vegetation for irrigation, then plants receive water supply, but salt damage occurs during winter months
Solution Approach 1:
The system incorporates sensors that continuously monitor water quality parameters, particularly salt content. Based on this feedback, the control unit automatically adjusts the valve positions to direct water to either the vegetation or the sewer system, ensuring plants receive water when safe and preventing salt damage when contamination levels are high.
Solution Approach 2:
The drainage system dynamically switches between two operational modes: irrigation mode during periods with acceptable water quality, and discharge mode when salt loads exceed safe thresholds. This dynamic adaptation allows the system to maximize water reuse for vegetation while protecting plants from salt damage.
3Device complexity
If a single drainage outlet is used for both irrigation and overflow, then system complexity is reduced, but plant health cannot be protected during high salt load periods
Solution Approach 1:
Instead of a single drainage outlet, the system uses multiple segmented outlets with independent control. The first outlet serves vegetation irrigation while the second outlet provides a dedicated discharge path for contaminated water. This segmentation enables selective water routing based on quality conditions without requiring complex treatment systems.
Solution Approach 2:
The control unit with automated valves acts as an intermediary between the filter substrate and the two drainage outlets. It monitors water quality and automatically directs flow to the appropriate outlet, simplifying the overall system while protecting plants from salt damage through intelligent automation rather than complex physical separation.
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
Ensures that vegetation is supplied with clean water in summer while preventing salt damage in winter by routing contaminated water into the sewage system, thus maintaining plant health with minimal maintenance.
Implementation Method 1
a filter substrate (4) arranged in the inlet channel section (1)
Implementation Method 2
Gas pistons and/or liquid pistons are particularly suitable as means for automatic operation. These pistons contain an actuating medium that expands or contracts in response to weather-dependent temperature changes.
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 2c~2d
AI summary
Water flowing into a drainage channel is to be purified using a filter substrate (4) and then supplied to an irrigation system to supply surrounding vegetation. However, it should be noted that known filter substrates are not able to filter salt loads from the incoming surface water. The invention therefore provides to direct the water to different drainage basins depending on the salt load. Since the volume of water and the salt load are greater in winter, less or no water should be directed to the vegetation. In summer, there is less salt load, and the plants require more water. The invention provides that, with the help of shut-off devices (11, 13, 15), the incoming water is directed as needed to a winter drain (9) or a summer drain (8).