| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5128cfc84a0fb189fceb3cd240c44493 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-444
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-441
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-147
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2303-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2321-168
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-722
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2305-023
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02A20-131
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-68 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D65-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D7-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D7-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D21-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D65-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-444
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D65-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F9-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D65-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D21-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D7-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D7-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C11D7-10 |
| filingDate |
2019-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_31cca15245cf94d8025202dd157772a7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_389bd9cde5304b97c91cd8e54c02ef17 |
| publicationDate |
2019-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2019216326-A1 |
| titleOfInvention |
Method for washing filter and method for desalinating seawater |
| abstract |
This method is for washing a filter and is used in a seawater desalination process including a first filtration step for subjecting seawater 3 to microfiltration or ultrafiltration, and a second filtration step for subjecting seawater 4 after the first filtration step to a reverse osmosis treatment, wherein: the filter is a microfiltration membrane or ultrafiltration membrane 41 used in the first filtration step; an iron compound is added to seawater 3 in any stage in the washing method; the washing method includes a washing chemical liquid preparation step for preparing washing chemical liquid 1, and a sticking matter removal step for removing matter sticking to the filter by bringing the filter into contact with washing chemical liquid 1; and in the washing chemical liquid preparation step, seawater 4 after the first filtration step is mixed with at least hydrogen peroxide to prepare washing chemical liquid 1 having an iron compound concentration of 1.50 mmol/L or more in terms of iron atoms. |
| priorityDate |
2018-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |