Rotating Spray Device for Biofilter Irrigation
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Solution Overview
Problem
Current wastewater treatment systems face challenges in efficiently removing hydrogen sulfide (H2S) from contaminated air streams, as existing methods often result in uneven distribution of water and nutrients in biofilters, leading to incomplete odor removal and increased operational costs.
Innovation Solution
A rotating spray device is introduced, featuring a central hub with arms extending to the vessel walls, equipped with adjustable nozzles that provide a more even distribution of water and nutrients over the biofilter media, controlled by a sensor and controller system to maintain optimal pH and nutrient levels, enhancing the removal efficiency of hydrogen sulfide.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional spray system is used for irrigation, then the structure is simple, but the water and nutrient distribution over the media bed is uneven
Solution Approach 1:
The spray system employs a rotating arm mechanism that dynamically moves spray nozzles across the media bed surface. The rotation enables continuous coverage and uniform distribution of water and nutrients, transforming a static simple structure into a dynamic system that achieves homogeneous irrigation patterns throughout the biofilter media.
2Productivity
If the spray coverage is increased to improve distribution, then the removal efficiency of hydrogen sulfide improves, but the device complexity increases
Solution Approach 1:
The spray system divides the irrigation function into multiple segments through several nozzles positioned at different locations on the rotating arm. Each nozzle covers a specific sector of the media bed, and their coordinated rotation ensures complete coverage. This segmentation allows comprehensive spray coverage for enhanced hydrogen sulfide removal while maintaining a relatively simple modular structure.
3Manufacturing precision
If more nozzles are added to cover the entire media bed, then the distribution uniformity improves, but the device complexity and cost increase
Solution Approach 1:
The system uses periodic rotation of the spray arm to achieve uniform distribution across the entire media bed. Instead of installing numerous nozzles simultaneously, a smaller number of nozzles mounted on a rotating arm passively cover different areas during rotation cycles. This periodic action transforms a spatial complexity problem into a temporal solution, reducing the total number of nozzles required while maintaining distribution uniformity.
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
The rotating spray device achieves a hydrogen sulfide removal rate of at least 90%, reducing operational costs and improving the efficiency and reliability of biofilter operations by ensuring consistent nutrient and water distribution across the media bed.
Implementation Method 1
a spray head system positioned above the media bed, comprising a central hub positioned at the central axis of the vessel, at least one arm extending distally from the central hub toward a wall of the vessel and configured to rotate about the central axis, and a plurality of nozzles connected to the at least one arm
Implementation Method 2
the control system comprises at least one sensor positioned in the fluid outlet. In some aspects, the at least one sensor provides an input signal to a controller
Implementation Method 3
the controller is further connected to a timer. In some aspects, the sensor is configured to identify at least one of pH, nutrient concentration, and hydrogen sulfide concentration
Data Source
AI summary
A biofilter irrigation system comprises a cylindrical vessel having a central axis, a media bed positioned within the vessel, a spray head system positioned above the media bed, the spray head system comprising a central hub positioned at the central axis of the vessel, at least one arm extending distally from the central hub toward a wall of the vessel and configured to rotate about the central axis, and a plurality of nozzles connected to the at least one arm. The biofilter irrigation system further comprises a fluid outlet positioned below the media bed.