| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d97cb748898aa080b013f7f35bc8b434 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02A20-131 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-56
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/B01D61-02 |
| filingDate |
2014-11-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bb19087c9655e27df81bf65f4cfe4bd7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0e68e3b125948b743ea3122b3e85cd6b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_27a11f6946da15ae8587f88bbe75e971 |
| publicationDate |
2015-08-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2015142903-A |
| titleOfInvention |
Operation method of reverse osmosis membrane device and reverse osmosis membrane device |
| abstract |
In a reverse osmosis membrane treatment of raw water containing a large amount of biological metabolite-based organic substances that adsorb to a membrane and cause membrane contamination, the membrane fouling and flux decrease are suppressed, and the chemical cleaning frequency is reduced. A stable reverse osmosis membrane treatment is performed for a long time. SOLUTION: The number of membrane elements and the bank configuration so that the average value of the membrane surface concentration (Cm) of the biological metabolite-based organic substance for each reverse osmosis membrane element calculated by the following formula (1) is not more than a predetermined value X. The amount of permeated water, the amount of concentrated water, or the feed water concentration by pretreatment of raw water is adjusted, or a dispersant is added. Cm = Cb exp {Fp / (S ยท k)} Formula (1) k [m / s]: Mass transfer coefficient Fp [m3 / s] of membrane element: Permeated water amount S [m2] per membrane element: Membrane area per membrane element Cb [kg / m3]: Biometabolite organic matter concentration of water to be treated [Selection] Fig. 1 |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2018069198-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2020045004-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2020032395-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-7200552-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-102193618-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2018168522-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-I721256-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-WO2018056090-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-102278438-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-WO2018168522-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20190123297-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2018084246-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110290859-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110290859-A |
| priorityDate |
2013-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |