Control of odor and septicity and purification of sewage and wastewater
OwnerAmal K. Bhadrainventor
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Abstract
This invention is a process for controlling odor and septicity of sewage or wastewater and for purifying sewage or wastewater by biological active substances, A source of sulfur dioxide is added to sewage or wastewater along with metal catalyst and sewage or wastewater is aerated. The effect of this treatment is to reduce the generation of hydrogen sulfide and the odor and corrosion associated with this compound and to reduce the need for aeration in the treatment of sewage or wastewater and to purify sewage or wastewater by increasing the metabolic activities of biological active substances added therein, This results in substantial savings in aeration costs.
Claims29
A process for treating sewage or wastewater for control of odor and septicity and for purification thereof, comprising the steps of:
- adding to said sewage or wastewater to be treated a source of sulfur dioxide selected from the group consisting of sulfur dioxide, sulfite, bisulfite, metabisulfite, sulfurous acid, pyrosulfite, and mixtures thereof;
- adding a metal salt catalyst to said sewage or wastewater to be treated, and
- aerating the sewage or wastewater.
A process of treating sewage or wastewater for control of odor and septicity and for purification thereof, comprising the steps of:
- adding to said sewage or wastewater a source of sulfur dioxide selected from the group consisting of sulfur dioxide, sulfite, bisulfite, metabisulfite, pyrosulfite, sulfurous acid, and mixtures thereof;
- adding a biologically active substance selected from the group consisting of activated sludge, algae, aquatic plants, and mixtures thereof to the sewage or wastewater after the addition of said source of sulfur dioxide, and
- aerating the sewage or water.
A process of treating sewage or wastewater for control of odor and septicity and purification thereof, comprising the steps of:
- adding to said sewage or wastewater to be treated a source of sulfur dioxide selected from the group consisting of sulfur dioxide, sulfite, bisulfite, metabisulfite, pyrosulfite, sulfurous acid, and mixtures thereof;
- adding a metal salt catalyst to the sewage or wastewater;
- and
- adding a biologically active substance selected from the group consisting of activated sludge, algae, aquatic plants, and mixtures thereof to said sewage or wastewater after the addition of said source of sulfur dioxide.
A process of treating sewage or wastewater for control of odor and septicity and purification thereof, consisting of the steps of:
- adding 1 to 300 ppm of a source of sulfur dioxide selected from the group consisting of sulfur dioxide, sulfite, bisulfite, metabisulfite, sulfurous acid, pyrosulfite, solution of sulfur dioxide in sodium hydroxide, a solution of sulfurous acid in sodium hydroxide, and mixtures thereof to a million parts of sewage or wastewater;
- and
- adding a biologically active substance selected from the group consisting activated sludge, algae, aquatic plants, and mixtures thereof to said sewage or wastewater after the addition of said source of sulfur dioxide.
Dependencies are inferred from the claim text.