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 Title: |
US5954969:
Recovery of iron oxides from polluted coal mine drainage
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Hedin, Robert S.; Pittsburgh, PA 15228
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| Assignee: |
None
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| Published / Filed: |
1999-09-21
/ 1997-04-15
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| Application Number: |
US1997000834236
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| IPC Code: |
Advanced:
C02F 1/64;
Core:
C02F 1/62;
IPC-7:
C02F 1/64;
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| ECLA Code: |
C02F1/64C;
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| U.S. Class: |
Current:
210/709;
210/170.07;
210/201;
210/205;
210/253;
210/322;
210/722;
210/724;
210/747;
423/140;
423/633;
Original:
210/709;
210/722;
210/724;
210/747;
210/170;
210/201;
210/205;
210/253;
210/322;
423/140;
423/633;
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| Field of Search: |
210/96.1,101,198.1,199,170,200,709,722,724,747,201,205,253,322
423/140,633
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| Priority Number: |
| 1997-04-15 |
US1997000834236 |
| 1996-04-15 |
US1996000015976P |
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| Abstract: |
A method and system is provided for producing a commercially usable iron oxide material by treating iron contaminated water. A clean effluent is also produced. Iron contaminated water is sampled to determine a bicarbonate to iron molar ratio. The flow of the water is directed to a collection basin assembly when the bicarbonate to iron molar ratio is at least 2 to 1. Iron oxide material precipitates in the collection basin assembly. The water from the collection basin assembly is directed to a constructed wetland. After a period of time, the iron oxide material in the collection basin assembly can be harvested and used for commercial purposes without excessive further treatment.
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| Attorney, Agent or Firm: |
Webb Ziesenheim Logsdon Orkin & Hanson, P.C. ;
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| Primary / Asst. Examiners: |
Woo, Jay H.; Prince, Fred
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| Maintenance Status: |
CC Certificate of Correction issued
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| INPADOC Legal Status: |
Show legal status actions
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| Parent Case: |
CROSS REFERENCE OF RELATED APPLICATION
This application claims the benefit of Provisional Application No. 60/015,976 filed on Apr. 15, 1996.
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| Family: |
None
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First Claim:
Show all 20 claims |
I claim:
1. A method for producing and recovering an iron oxide material from alkaline, iron containing water, comprising the steps of:
- sampling the iron containing water to determine a bicarbonate to iron molar ratio;
- transporting the sampled water to a collection basin assembly having at least one collection basin when the bicarbonate to iron molar ratio is at least about 2 to 1;
- preventing contamination of the sampled water in the collection basin assembly;
- precipitating an iron oxide material in the at least one collection basin; and
- recovering the precipitated iron oxide material by removing the precipitated iron oxide material from the at least one collection basin.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 6 U.S. patent(s) that reference this one
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