| 摘要 |
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. |
| 主权项 |
1. 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. |
