Water treatment method and water treatment apparatus
US-2024383788-A1 · Nov 21, 2024 · US
Water treatment device and method
US9434630B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9434630-B2 |
| Application number | US-201214360415-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 9, 2012 |
| Priority date | Nov 23, 2011 |
| Publication date | Sep 6, 2016 |
| Grant date | Sep 6, 2016 |
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Abstract
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A water treatment device including an electro-coagulation (EC) unit for treating a stream of feed water to produce a stream of EC treated water of lower salinity than the stream of feed water, an electrical separation unit for treating the stream of EC treated water to obtain a stream of product water of lower salinity than the EC treated water, and a precipitation unit for providing a stream of wash water to wash the electrical separation unit and become a stream of reject water flowing back to the precipitation unit, wherein precipitation in the precipitation unit produces the stream of wash water of lower salinity than the stream of reject water.
First claim
Opening claim text (preview).
What is claimed is: 1. A water treatment device, comprising: an electro-coagulation (EC) unit for treating a stream of feed water to produce a stream of EC treated water of lower salinity than the stream of feed water; an electrical separation unit for treating the stream of EC treated water to obtain a stream of product water of lower salinity than the EC treated water, the electrical separation unit comprising at least one of an electrodialysis reversal desalination (EDR) device and a supercapacitor desalination (SCD) device; and a precipitation unit for providing a stream of wash water to wash the electrical separation unit and become a stream of reject water flowing back to the precipitation unit, wherein precipitation in the precipitation unit produces the stream of wash water of lower salinity than the stream of reject water, wherein the stream of EC treated water flows to the electrical separation unit without flowing through the precipitation unit. 2. The water treatment device according to claim 1 , wherein the stream of EC treated water is lower in at least one of hardness, alkalinity, and silica concentration than the stream of feed water. 3. The water treatment device according to claim 1 , wherein the stream of product water is lower in at least one of hardness, alkalinity, and silica concentration than the stream of EC treated water. 4. The water treatment device according to claim 1 , further comprising a membrane desalination unit before the EC unit. 5. The water treatment device according to claim 4 , wherein the membrane desalination unit is a reverse osmosis membrane device. 6. The water treatment device according to claim 1 , wherein the electrical separation unit comprises the EDR device and the SCD device. 7. A water treatment method comprising: treating a stream of feed water in an electro-coagulation (EC) unit to produce a stream of EC treated water of lower salinity than the stream of feed water; treating the stream of EC treated water in an electrical separation unit to obtain a stream of product water of lower salinity than the EC treated water, the electrical separation unit comprising at least one of an electrodialysis reversal desalination (EDR) device and a supercapacitor desalination (SCD) device; and providing a stream of wash water from a precipitation unit to wash the electrical separation unit and become a stream of reject water, wherein precipitation in the precipitation unit produces the stream of wash water of lower salinity than the stream of reject water, wherein the stream of EC treated water flows to the electrical separation unit without flowing through the precipitation unit. 8. The water treatment method according to claim 7 , wherein the stream of feed water is from a membrane desalination unit. 9. The water treatment method according to claim 8 , wherein the membrane desalination unit is a reverse osmosis membrane device. 10. The water treatment device according to claim 7 , wherein the electrical separation unit comprises the EDR device and the SCD device. 11. The water treatment method according to claim 7 , wherein the stream of EC treated water is lower in at least one of hardness, alkalinity, and silica concentration than the stream of feed water. 12. The water treatment method according to claim 7 , wherein the stream of product water is lower in at least one of hardness, alkalinity, and silica concentration than the stream of EC treated water.
Assignees
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Classifications
by reverse osmosis · CPC title
by membrane distillation (distillation and evaporation without the use of membranes C02F1/04) · CPC title
Capacitive deionisation · CPC title
Devices therefor; Their operating or servicing · CPC title
electrodialysis · CPC title
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- What does patent US9434630B2 cover?
- A water treatment device including an electro-coagulation (EC) unit for treating a stream of feed water to produce a stream of EC treated water of lower salinity than the stream of feed water, an electrical separation unit for treating the stream of EC treated water to obtain a stream of product water of lower salinity than the EC treated water, and a precipitation unit for providing a stream o…
- Who is the assignee on this patent?
- Xia Zijun, Cai Wei, Xiong Rihua, and 4 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 Sep 06 2016 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).