Grey water system
US-2024051852-A1 · Feb 15, 2024 · US
Water treatment
US9617170B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9617170-B2 |
| Application number | US-201414516174-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 16, 2014 |
| Priority date | Apr 20, 2012 |
| Publication date | Apr 11, 2017 |
| Grant date | Apr 11, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present invention relates to a process for reduction of the presence of microorganisms and/or decomposition of organic micropollutants in water using an energy source and an additive characterized in that the energy source is UV radiation and the additive comprises performic acid.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for treating water comprising organic micropollutants and/or microorganisms comprising: treating the water using an energy source and adding to the water an additive, wherein the energy source is UV radiation and the additive comprises performic acid, wherein the water to be treated is subjected to UV radiation during continuous addition of the additive containing performic acid to the water and the performic acid is added to the waters to be disinfected and/or subjected to degradation in an amount of 0.1 to 5 mg/l and intermittent instantaneous shock dosing using performic acid in an amount of 10 to 50 mg/l is performed and a weekly sum of the shock dosage periods performed is 0.3-30 h. 2. The process according to claim 1 , wherein the organic micropollutants are selected from the group consisting of pesticides, pharmaceutical residues, hormones, flame-retardants, plasticizers and perfluorinated compounds, and any combination thereof. 3. The process according to claim 1 , wherein the organic micropollutants are selected from the group consisting of atrazine, lindane, carbamazepine, diclofenac, sulfamethoxazole, gemfibrozil, ethenylestradiol, oxybenzone, and musk ketone, and any combination thereof. 4. The process according to claim 1 , wherein the microorganisms are bacteria and/or viruses. 5. The process according to claim 4 , wherein bacteria and/or viruses are enteric bacteria and/or viruses. 6. The process according to claim 5 , wherein the bacteria are selected from Escherichia coli, Enterococcus faecalis and Enterococcus faecium. 7. The process according to claim 4 , wherein the viruses are bacteriophages. 8. The process according to claim 7 , wherein the bacteriophage is MS2.
Assignees
Inventors
Classifications
Specific form of oxidant · CPC title
- C02F1/32Primary
with ultraviolet light · CPC title
containing halogen · CPC title
containing nitrogen · CPC title
Pesticides · CPC title
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Frequently asked questions
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- What does patent US9617170B2 cover?
- The present invention relates to a process for reduction of the presence of microorganisms and/or decomposition of organic micropollutants in water using an energy source and an additive characterized in that the energy source is UV radiation and the additive comprises performic acid.
- Who is the assignee on this patent?
- Kemira Oyj
- What technology area does this patent fall under?
- Primary CPC classification C02F1/32. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 11 2017 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).