Method and system for pre-treating high strength wastewater
US-2024182343-A1 · Jun 6, 2024 · US
Process for purification treatment of wastewater and apparatus for purification treatment of wastewater
US2015368130A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2015368130-A1 |
| Application number | US-201414765088-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 30, 2014 |
| Priority date | Jul 4, 2013 |
| Publication date | Dec 24, 2015 |
| Grant date | — |
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Abstract
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A process for purification treatment of wastewater according to the present invention is a process for conducting a purification treatment of wastewater containing polyvinyl alcohol by using a membrane bioreactor process, the process including adding a nutrient to a treatment system. The nutrient is preferably added to an aeration tank. The nutrient preferably contains nitrogen. An amount of the nutrient initially added is preferably 5% or more and 25% or less in terms of nitrogen. The process for purification treatment of wastewater preferably includes a step of measuring a nitrogen content after a treatment, and an amount of the nutrient added is preferably adjusted on the basis of the result of this measurement while checking the effect on the basis of a chemical oxygen demand. The nutrient may be added to the aeration tank by a mechanism that adds the nutrient to the treatment system or by feeding the nutrient manually to the treatment system.
First claim
Opening claim text (preview).
1 . A process for purification treatment of wastewater for conducting a purification treatment of wastewater containing polyvinyl alcohol by using a membrane bioreactor process (MBR process), the process comprising adding a nutrient to a treatment system. 2 . The process for purification treatment of wastewater according to claim 1 , comprising a microorganism treatment step of aerating the wastewater, wherein the nutrient is added in the microorganism treatment step. 3 . The process for purification treatment of wastewater according to claim 1 , wherein the nutrient contains nitrogen. 4 . The process for purification treatment of wastewater according to claim 1 , comprising a step of measuring a nitrogen content after a treatment, wherein an amount of the nutrient added is adjusted on the basis of the nitrogen content determined in the measurement step. 5 . The process for purification treatment of wastewater according to claim 1 , wherein an amount of the nutrient initially added is 5% or more and 25% or less in terms of nitrogen relative to a chemical oxygen demand of the wastewater. 6 . An apparatus for purification treatment of wastewater for conducting a purification treatment of wastewater containing polyvinyl alcohol by using a membrane bioreactor process, the apparatus comprising a mechanism that adds a nutrient to a treatment system. 7 . The apparatus for purification treatment of wastewater according to claim 6 , comprising an aeration tank that treats the wastewater with a microorganism, wherein the mechanism that adds the nutrient is attached to the aeration tank. 8 . The apparatus for purification treatment of wastewater according to claim 6 , wherein the nutrient contains nitrogen. 9 . The apparatus for purification treatment of wastewater according to claim 6 , further comprising a measurement unit that measures a chemical oxygen demand and a nitrogen content after a treatment, wherein an amount of the nutrient added is adjusted on the basis of the nitrogen content determined by the measurement unit. 10 . The apparatus for purification treatment of wastewater according to claim 6 , wherein an amount of the nutrient initially added is 5% or more and 25% or less in terms of nitrogen relative to the chemical oxygen demand.
Assignees
Inventors
Classifications
- C02F3/1268Primary
Membrane bioreactor systems · CPC title
Non-contaminated water, e.g. for industrial water supply · CPC title
Nutrients for stimulating the growth of microorganisms · CPC title
Dyes; Colorants; Fluorescent agents · CPC title
Biological treatment of water, waste water, or sewage · CPC title
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- What does patent US2015368130A1 cover?
- A process for purification treatment of wastewater according to the present invention is a process for conducting a purification treatment of wastewater containing polyvinyl alcohol by using a membrane bioreactor process, the process including adding a nutrient to a treatment system. The nutrient is preferably added to an aeration tank. The nutrient preferably contains nitrogen. An amount of th…
- Who is the assignee on this patent?
- Sumitomo Electric Industries
- What technology area does this patent fall under?
- Primary CPC classification C02F3/1268. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Dec 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).