Method for increased productivity of polyhydroxyalkanoates (phas) in fed-batch processes for biomass derived from the treatment of wastewater
US-2015353967-A1 · Dec 10, 2015 · US
Reduction of hydrogen sulfide and/or malodor gassing from water via the addition of peroxyacetic acid/hydrogen peroxide product
US8992780B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8992780-B2 |
| Application number | US-201313891908-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 10, 2013 |
| Priority date | May 10, 2013 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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The invention provides methods and compositions for reducing the malodorous sulfide gas released by a wastewater treatment system. The method preserves the vitality of waste consuming organisms within the system. The method comprises the steps of: determining the SRP PAA demand of the system, determining the aerobic PAA demand of the system, and adding a composition in an amount such that it is in excess of the SRP PAA demand but is below the aerobic PAA demand. Even though the composition increases the amount of sulfates within the wastewater it reduces the amount of SRP which prevents the malodorous sulfite gas release. The composition comprises at least one percarboxyacid.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of reducing the odor released by a wastewater treatment system while preserving the vitality of waste-consuming organisms within the system, the method comprising the steps of: adding a composition to the wastewater treatment system containing wastewater in an amount such that it is in excess of the SRP PAA demand but is below the aerobic PAA demand, wherein the composition comprises at least one peroxy acid. 2. The met…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C02F3/006Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Cross-Sectional Technologies · mapped topic
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Frequently asked questions
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- What does patent US8992780B2 cover?
- The invention provides methods and compositions for reducing the malodorous sulfide gas released by a wastewater treatment system. The method preserves the vitality of waste consuming organisms within the system. The method comprises the steps of: determining the SRP PAA demand of the system, determining the aerobic PAA demand of the system, and adding a composition in an amount such that it is…
- Who is the assignee on this patent?
- Ecolab Usa Inc, Ecolab Usa Inc
- What technology area does this patent fall under?
- Primary CPC classification C02F3/006. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).