Redox Water Treatment Method
OwnerMarcus George Theodore, Terry G. Gonginventors
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Abstract
A redox water treatment method comprises first determining the composition of water and whether water treatment requires either oxidation or redaction, or both to optimize nitrogen removal by a bioreactor. Sulfur dioxide (SO2) is injected into the water to he treated to provide H+, SO2, SO3=, HS03−, dithionous acid (H2S2O4), and other sulfur intermediate reduction products forming a sulfur dioxide treated water, which behaves either as a reducing agent or an oxidizing agent depending on the strength of the acid concentration, which alters sulfurous acid from a reducing agent to a more powerful oxidizing agent.
Claims22
A redox water treatment method employing sulfurous acid comprising:
- a. determining the compounds of interest in water to be treated and whether the compounds require oxidation, reduction, or both,
- b. injecting sulfur dioxide (SO2) into the water to be treated to provide H+, SO2, SO3−2, HSO3−, dithionous acid (H2S2O4), and other sulfur intermediate reduction products forming a sulfur dioxide treated water either:
- i. in the presence of oxygen, air, an oxidizing agent, such as hydrogen peroxide, ferric or ferrous compounds, and additional sulfur dioxide and any other acid to ensure that the electrical conductivity level of the sulfur dioxide treated water is sufficient to accept electrons to create an oxidizing solution to oxidize compounds of interest, or
- ii. in the presence of no oxygen and without additional other acid added for reduction to occur, but more sulfur dioxide can be added to ensure the electrical conductivity level of the sulfur dioxide treated water is sufficient for release of electrons from the sulfur dioxide, sulfites, bisulfites, and dithionous acid to form a reducing solution to reduce oxidants, disinfect pathogens, acid leach heavy metals from suspended solids into solution, and self-agglomerate suspended solids, and
- c. adjusting and selectively employing the oxidation reduction potential electrical conductivity levels of the sulfur dioxide treated water_required for providing either an oxidizing or reducing solution, or both.
A redox water treatment method comprising:
- a. determining the ionic and molecular composition of water to be treated for oxidation and reduction,
- b. injecting sulfur dioxide (SO2) into water to be treated to provide H+, SO2, SO3=2, HS03−, dithionous acid (H2S2O4), and other sulfur intermediate reduction products forming a sulfur dioxide treated water in the presence of the amount of oxygen necessary for reduction to occur and no additional other acid is added, but more sulfur dioxide can be added to ensure the electrical conductivity level of the sulfur dioxide treated water is sufficient for release of electrons from the sulfur dioxide, sulfites, bisulfites, and dithionous acid to form a reducing solution to reduce oxidants, disinfect pathogens, acid leach heavy metals from suspended solids into solution, and self agglomerate suspended solids, and
- c. removing and disposing of suspended solids from the reducing solution along with adsorbed polar molecules to produce a filtrate containing heavy metals,
- d. injecting oxygen and other additional acid including more sulfur dioxide into the filtrate to insure that the electrical conductivity level of the sulfur dioxide treated water is sufficient to accept electrons to create an oxidizing solution, and
- e. raising the pH of the sulfur dioxide treated water with lime to precipitate heavy metals for removal as metal hydroxides to form a disinfected demetalized filtrate suitable for raising crops and biological treatment.
Dependencies are inferred from the claim text.