| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cd647dcb0afbbc35e27402d6df649ab9 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F11-008
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2303-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-001
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S210-906
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2220-4887
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-105
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S210-912
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-103 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-281
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-28042 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D21-30 |
| filingDate |
2007-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2009-02-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_78362356f9627a9dd1f3acdbcdd4acfc |
| publicationDate |
2009-02-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7491322-B1 |
| titleOfInvention |
Apparatus for removing phosphorus from wastewater |
| abstract |
A method of and system for removing phosphorus from wastewater using a waste sludge that has a high affinity for phosphorus. In order for the waste sludge to be used in a flow-through contact reactor to remove the phosphorus from a wastewater stream, the waste sludge is pelletized. The waste sludge pellets are packed into one or more flow-through contact reactors. In the configuration described herein, phosphorus removal is maximized by flowing the wastewater through the reactor(s) in a “pulsed” manner, rather than continuously. Thus, wastewater is flowed through the reactor(s) for a period of time and stopped for a period of time. By giving the sludge absorbant a rest period, the absorption capacity of the sludge is increased significantly, thus decreasing the frequency of regeneration or replacement of the sludge. Sludge regeneration can be accomplished with a stripping step using an alkaline solution of pH 13, followed by rinsing with water. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8834725-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8815184-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9809870-B2 |
| priorityDate |
2005-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |