Submerged membrane filtration system using reciprocating membrane
US-2018117531-A1 · May 3, 2018 · US
Anaerobic treatment method
US9102550B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9102550-B2 |
| Application number | US-201113885920-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 18, 2011 |
| Priority date | Nov 26, 2010 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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In an anaerobic treatment method in which contaminated water is introduced into an acidification tank to decompose polymer components in the contaminated water into organic acids, and the effluent from the acidification tank is introduced into a methane production tank containing non-biological fluidized carriers so as to convert the acids into methane, the treatment is carried out stably and continuously by preventing the occurrence of floating of carriers in the methane production tank. The COD Cr concentration of polymer components other than organic acids in the acidification tank effluent to be introduced into the methane production tank is controlled to be not more than 300 mg/L. This control prevents the occurrence of acid production reactions in the methane production tank and the consequent proliferation of microorganisms, and thereby suppresses sticking of carriers as well as the occurrence of floating and blockage by the carriers.
First claim
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The invention claimed is: 1. An anaerobic treatment method, comprising: introducing contaminated water into an acidification tank to decompose a polymer component in the contaminated water into an organic acid, and introducing effluent from the acidification tank into a methane production tank containing non-biological fluidized carriers to convert the organic acid into methane, wherein a retention time of the contaminated water in the acidification tank is controlled to be no…
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- C02F3/286Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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 US9102550B2 cover?
- In an anaerobic treatment method in which contaminated water is introduced into an acidification tank to decompose polymer components in the contaminated water into organic acids, and the effluent from the acidification tank is introduced into a methane production tank containing non-biological fluidized carriers so as to convert the acids into methane, the treatment is carried out stably and c…
- Who is the assignee on this patent?
- Shinto Hideaki, Tokutomi Takaaki, Kurita Water Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification C02F3/286. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 11 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).