Wastewater Basin Pumping Control via Gravity Equalization
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Solution Overview
Problem
Existing wastewater treatment systems, particularly reciprocating wetlands, are inefficient in terms of energy expenditure due to reliance on pumps or airlifts to move wastewater between basins, which can be costly and energy-intensive.
Innovation Solution
A system utilizing a combination of gravitational flow and controlled pumping between two basins, where the pumping regime is managed by a controller to optimize water levels and flow direction, reducing energy consumption by leveraging gravity when possible and using pumps only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If pumps or airlifts are used to move wastewater between basins, then wastewater can be moved between basins, but energy expenditure increases significantly
Solution Approach 1:
The system equalizes water levels between basins by allowing gravitational flow when levels differ, eliminating the need for continuous pumping. The basins operate at equipotential states where water naturally flows from higher to lower levels without energy input, and pumping is only activated when level equalization is complete.
Solution Approach 2:
The pumping system operates periodically rather than continuously, activating only when water levels in the basins are equal and switching between basins in alternating cycles. This periodic operation dramatically reduces energy consumption compared to continuous pumping while maintaining effective wastewater movement and treatment.
2Reliability
If continuous pumping is used to maintain water levels, then water level control is maintained, but energy costs increase
Solution Approach 1:
The system uses gravitational force to automatically maintain water levels between basins without active pumping intervention. When one basin's water level rises above the other, gravity naturally drives flow to equalize levels, making the system self-regulating and eliminating the need for energy-consuming continuous pump operation.
Solution Approach 2:
The system employs level sensors to monitor water levels in both basins and provides feedback to the controller, which activates pumping only when level differential falls within a predetermined range. This feedback mechanism ensures reliable water level control while minimizing energy consumption by pumping only when necessary.
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 approach significantly reduces energy expenditure compared to prior art systems by minimizing the need for continuous pumping, thereby enhancing the efficiency and cost-effectiveness of wastewater treatment.
Implementation Method 1
A pumping system pumps wastewater from a source basin to a recipient basin
Implementation Method 2
When the water level in the source basin is above the water level of the recipient basin, water can flow from the source basin to the recipient basin under the influence of gravity
Data Source
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AI summary
The invention provides a system for treatment of wastewater. A pumping system pumps wastewater from a source basin to a recipient basin, while a conduit allows gravitational flow of water from a source basin to a recipient basin when the pumping system is inactive. A controller activates the pumping system to pump wastewater from the source basin to a recipient basin when a wastewater level in the source basin is at a first predetermined height or when a rate of gravitational flow wastewater from the source basin to the recipient basin is below a first predetermined flow rate. The controller also turns off the pumping system when the water level in the source basin is at a source basin minimal level and the water level in the recipient basin is at a recipient basin maximal level. The invention also provides a method for operating a wastewater treatment of the invention, and a pumping system for use in the system of the invention.