METHODS AND APPARATUS FOR STRUVITE RECOVERY USING UPSTREAM CO2 INJECTION
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United States of America Patent
Stats
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N/A
Issued Date -
Oct 18, 2012
app pub date -
Feb 15, 2012
filing date -
Feb 15, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Formation of scale in a wastewater treatment system upstream of a struvite precipitation reactor is inhibited by injection of CO2. The injection may be performed at multiple locations. Injection may be controlled based on one or more of pH, fluid flow and fluid pressure. Injected CO2 may be stripped at the precipitation reactor to enhance struvite production. Scale may be inhibited while maintaining production of precipitated struvite.
First Claim
all claims..Other Claims data not available
Family
Country | kind | publication No. | Filing Date | Type | Sub-Type |
---|---|---|---|---|---|
EP | A1 | EP2489641 | Feb 14, 2012 | Patent | Application |
Type : Patent Sub-Type : Application | |||||
APPLICATION PUBLISHED WITH SEARCH REPORT | Methods and apparatus for struvite recovery using upstream CO2 injection | Aug 22, 2012 | |||
CA | A1 | CA2768190 | Feb 15, 2012 | Patent | Application |
Type : Patent Sub-Type : Application | |||||
APPLICATION LAID OPEN | METHODS AND APPARATUS FOR STRUVITE RECOVERY USING UPSTREAM CO2 INJECTION | Aug 15, 2012 |
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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CLEAN WATER INSTITUTE | 16580 SW 85TH AVENUE TIGARD OR 97224 |
International Classification(s)

- 2012 Application Filing Year
- C02F Class
- 1006 Applications Filed
- 859 Patents Issued To-Date
- 85.39 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Baur, Robert James | Lake Oswego, US | 5 | 57 |
# of filed Patents : 5 Total Citations : 57 |
Cited Art Landscape
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Patent Citation Ranking
- 7 Citation Count
- C02F Class
- 6.85 % this patent is cited more than
- 13 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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