| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2315-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2321-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2321-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2311-04 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-147
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-444
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D65-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-34 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-08 |
| filingDate |
2009-03-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2011-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-WO2009113521-A1 |
| titleOfInvention |
Pretreatment method for porous filtration membrane and drainage treatment method using pretreated porous filtration membrane |
| abstract |
Pretreatment water containing aggregated particles resulting from mixing of an aggregating agent is passed through a porous filter membrane made of a synthetic resin, and at least one pretreatment with backwashing with treatment water or / and physical cleaning consisting of air washing is performed. A filtered water treatment method characterized in that after treatment, water to be treated is passed and filtered. This makes it possible to suppress an increase in filtrate pressure over time during drainage treatment involving physical cleaning using a porous filtration membrane made of synthetic resin. |
| priorityDate |
2008-03-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |