Gas-Infused Liquid Treatment for H2S Mitigation in Wastewater
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Solution Overview
Problem
Current methods for mitigating hydrogen sulfide (H2S) in wastewater treatment systems, such as biological or chemical scrubbing, involve hazardous materials and residual byproducts that cause corrosion and odorous issues, necessitating improved solutions for effective and safe treatment.
Innovation Solution
The method involves pre-mixing or pre-blending oxidizing and neutralizing gases with a liquid, which is then released into a treatment chamber, either under pressure, vacuum, or ambient conditions, to treat hydrogen sulfide and other problematic gases through atomization, misting, or diffusion, using natural products like peat or charcoal, and oxygen-enriched liquids to neutralize or oxidize the gases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If biological or chemical scrubbing is used to treat H2S, then H2S treatment effectiveness is improved, but hazardous materials and residual byproducts cause corrosion and odorous issues
Solution Approach 1:
The patent applies strong oxidants (ozone, hydrogen peroxide, or chlorine) to chemically oxidize H2S and other reduced sulfur compounds into non-odorous, non-corrosive forms. This oxidation process eliminates the harmful effects of traditional scrubbing methods by converting problematic compounds into safe byproducts without requiring hazardous chemicals or producing corrosive residuals.
Solution Approach 2:
The patent extracts and treats H2S and other problematic gases from the wastewater system by introducing oxidizing agents that selectively react with and remove these compounds. The treatment system extracts the harmful elements (H2S, mercaptans) and converts them into harmless substances, separating the treatment function from the main wastewater flow.
2Reliability
If oxidizing chemicals are injected into wastewater liquid column, then H2S treatment is achieved, but hazardous chemicals leave undesirable residual that creates scaling and loading receiving facility
Solution Approach 1:
The patent changes the chemical parameters of the treatment process by using oxidizing agents that produce non-scaling, non-corrosive byproducts. By selecting specific oxidants (ozone, hydrogen peroxide, chlorine) and controlling their application, the system transforms the chemical outcome from harmful residuals to benign substances like oxygen, water, or sulfate, thereby changing the end-state parameters of the treatment process.
Solution Approach 2:
The patent converts the harmful H2S and reduced sulfur compounds into beneficial or neutral substances through oxidation. The harmful elements (sulfur compounds causing odor and corrosion) are transformed into beneficial outcomes (elimination of odor, prevention of corrosion, production of non-scaling byproducts), turning a harmful chemical process into a beneficial one.
3Reliability
If traditional chemical treatment methods are used, then H2S mitigation is achieved, but maintenance requirements and hazardous material handling increase
Solution Approach 1:
The patent employs oxidizing agents that self-regulate and decompose into harmless substances, reducing the need for complex maintenance equipment and hazardous material handling. The oxidants (particularly ozone and hydrogen peroxide) naturally decompose into oxygen and water, eliminating the need for extensive chemical handling infrastructure and reducing maintenance requirements compared to traditional scrubbing systems.
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 effectively reduces hydrogen sulfide, mercaptans, and odors, while minimizing corrosion and environmental impact, by using a combination of gas and liquid phases to treat wastewater, offering a safer and more efficient alternative to traditional methods.
Implementation Method 1
pre-mixing or pre-blending an oxidizing gas, a neutralizing gas, or both, with a liquid prior to releasing that mix or blend into a treatment chamber
Implementation Method 2
the method and apparatus provides treatment by atomizing or misting co-mingled, pre-mixed, or pre-blended oxidizing or neutralizing gas or gases and liquid within the treatment chamber
Implementation Method 3
using natural products like peat or charcoal, and oxygen-enriched liquids to neutralize or oxidize the gases
Data Source
AI summary
Hydrogen sulfide, mercaptans, corrosion and odor are treated through either a single phase gas treatment, a single phase liquid treatment or a multiphase (liquid and gas) treatment via an application of a gas infused liquid, oxidizing agents, and/or liquid bacterial formulations within a structure or within an external treatment chamber or pipe. An apparatus for treatment of an exhaust gas specifically to mitigate or eliminate H2S, mercaptans, corrosion, and odor includes means for introducing an oxidizing liquid, an oxidizing gas, or an oxidizing gas and liquid into an external treatment chamber or pipe whereby the introduced agent interacts with the exhaust gas to mitigate or eliminate its effect.