Wastewater Vent Odor Neutralization via Airflow Acceleration
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Solution Overview
Problem
Conventional odor neutralization methods for wastewater lift stations, such as activated carbon vents and air scrubbers, are costly, require frequent maintenance, and have a large footprint, necessitating a more efficient and cost-effective solution for odor control.
Innovation Solution
A passive venting device with a standpipe and housing containing an admixture of essential oils and surfactants that accelerates air flow to maximize odor absorption and release a pleasant fragrance, eliminating the need for activated carbon and air scrubbers, featuring an overflow drain and easy maintenance access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If activated carbon vents are used to neutralize odors, then odor absorption is effective, but cost and maintenance complexity increase
Solution Approach 1:
The patent replaces expensive activated carbon with a cheaper, replaceable liquid composition that can be easily replenished. The liquid composition contains surfactants and fragrance compounds that are less costly than activated carbon and can be simply refilled through a drain access, eliminating the need for complex carbon replacement procedures.
Solution Approach 2:
The patent changes the physical state of the odor-neutralizing material from solid (activated carbon) to liquid (surfactant-based composition). This parameter change enables easier replacement and refilling, reducing maintenance complexity while maintaining odor absorption effectiveness through the liquid's surface properties and fragrance release.
2Object-affected harmful factors
If air scrubbers are used to remove odors, then odor removal is effective, but device footprint and cost increase
Solution Approach 1:
The patent extracts the essential odor-neutralizing function from complex air scrubber systems and implements it in a simplified passive device. By using a liquid composition that naturally absorbs odors through surfactant action and releases fragrance, the invention eliminates the need for large scrubber tanks, pumps, and power supplies, reducing footprint to a compact vent cap assembly.
Solution Approach 2:
The device operates passively without external power or complex mechanisms. The liquid composition automatically absorbs odors and releases fragrance through natural evaporation and air flow, eliminating the need for energy-consuming equipment and large infrastructure, thereby minimizing device footprint while maintaining effectiveness.
3Device complexity
If passive venting is used to reduce cost, then maintenance cost decreases, but odor neutralization effectiveness may be reduced
Solution Approach 1:
The patent introduces a surfactant-based liquid composition as an intermediary substance that enhances odor neutralization in a passive system. The surfactants increase the liquid's surface area and adsorption capacity, while embedded fragrance compounds provide active odor masking, ensuring effectiveness comparable to active systems without requiring power or complex maintenance.
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 device effectively controls wastewater odors with a small footprint, low maintenance, and no moving parts, providing a cost-effective alternative to traditional odor neutralization methods by accelerating air flow over the admixture to absorb and neutralize odors.
Implementation Method 1
The standpipe that extends into the housing for accelerating ventilated air across the surface of an admixture
Implementation Method 2
The admixture of essential oils and surfactant absorbs odors by working through an exchange process and releasing a fragrance
Data Source
AI summary
An odor neutralization device for a wastewater lift station wastewater vent. The device is formed from a housing having a vertical standpipe with a first end securable to the receiver vent of a wastewater lift station and a second end extending above an admixture of essential oils and a surfactant. A baffle arrangement increases the velocity of air exiting or entering the wastewater lift station. The accelerated air is directed across the surface of the admixture for altering the characteristics of any odor laden air.