Water treatment method and water treatment apparatus
US-2024383788-A1 · Nov 21, 2024 · US
Urea-based system for energy and waste recovery in water recycling
US10377645B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10377645-B2 |
| Application number | US-201213602092-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 31, 2012 |
| Priority date | Aug 31, 2012 |
| Publication date | Aug 13, 2019 |
| Grant date | Aug 13, 2019 |
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Abstract
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The invention presents a urea bio-electrochemical (UBE) system to achieve resource recovery from water recycling systems. A GAC-urease bioreactor was used to recover urea from wastewater stream, and converted to ammonia. Then, the ammonia produced was used to feed an electrochemical cell to gather electrical energy. The invention shows the feasibility of using the UBE system in combination with a forward osmosis subsystem for water reclamation.
First claim
Opening claim text (preview).
We claim: 1. A Urea-based system for energy and waste recovery in water recycling comprising: a forward osmosis unit having a feed side receiving wastewater and a permeate side providing a urea-containing solution; a reverse osmosis unit connected to said forward osmosis unit, said reverse osmosis unit providing potable water; a bioreactor connected between said reverse osmosis unit and the permeate side of said forward osmosis unit, said bioreactor generating ammonia from said urea-containing solution; and an electrochemical cell receiving said generated ammonia and generating electrical energy from said ammonia. 2. The system of claim 1 , wherein the urea-containing solution is reacted with granulated activated carbon previously immobilized with urease to generate said ammonia. 3. The method of claim 1 , wherein the ammonia received at said electrochemical cell is electrochemically oxidized at a direct ammonia alkaline fuel cell to generate energy.
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Classifications
by forward osmosis · CPC title
Wastewater or sewage treatment systems using renewable energies · CPC title
Carbonaceous materials · CPC title
- C02F9/00Primary
Multistage treatment of water, waste water or sewage · CPC title
Build in apparatus for autonomous on board water supply and wastewater treatment (e.g. for aircrafts, cruiseships, oil drilling platforms, railway trains, space stations) · CPC title
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- What does patent US10377645B2 cover?
- The invention presents a urea bio-electrochemical (UBE) system to achieve resource recovery from water recycling systems. A GAC-urease bioreactor was used to recover urea from wastewater stream, and converted to ammonia. Then, the ammonia produced was used to feed an electrochemical cell to gather electrical energy. The invention shows the feasibility of using the UBE system in combination with…
- Who is the assignee on this patent?
- Cabrera Carlos R, Nicolau Eduardo, Flynn Michael, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C02F9/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 13 2019 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).