| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_72f1be3ba5b60a66e0d684adb19fd40a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bae3e2ba35bdef28bf050d0cc49b166e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W10-15
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2303-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-001
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W10-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2203-006
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2303-06 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F3-121
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F3-1284
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F3-303
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F3-301
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F3-1278
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F3-1221
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F3-006 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F103-32 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F3-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F3-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F3-12 |
| filingDate |
2012-03-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2016-09-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eaa790b704378b134e0ae756a874e798 |
| publicationDate |
2016-09-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-9446972-B2 |
| titleOfInvention |
Activated sludge treatment method, and method for upgrading existing waste water treatment equipment using said method |
| abstract |
The object is to provide an activated sludge treatment method whereby production of excess sludge is brought substantially to zero; and a method for upgrading existing waste water treatment equipment, employing this method. The method includes a step ( 1 ) in which sludge ( 2 ) produced in a sedimentation tank is supplied to a waste water aeration-conditioning tank for activated sludge treatment; a step ( 2 ) in which waste water into which the sludge ( 2 ) has been mixed is subjected to aeration-conditioning to bring the oxidation-reduction potential to a positive value, and supplied to a pressurized flotation concentration-separation tank; a step ( 3 ) in which the sludge ( 1 ) produced through treatment in the pressurized flotation concentration-separation tank is supplied to the bioreactor; a step ( 4 ) in which the treated waste water ( 1 ) separated from the pressurized flotation concentration-separation tank is supplied to a dilute activated sludge aeration tank; a step ( 5 ) in which released water and the sludge ( 3 ) produced by treatment in the bioreactor are supplied to the dilute activated sludge aeration tank; and a step ( 6 ) in which the treated waste water ( 2 ) separated from the dilute activated sludge aeration tank is supplied to the sedimentation tank. |
| priorityDate |
2012-03-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |