| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_02fc8b0aa7fd88c3eb85c0889572d326 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-36
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/C02F1-66 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F9-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-44 |
| filingDate |
2015-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_28f04d2359496f71507ca08a3feba01b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e034ec44a5f17cc80de2af30ac6de91c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_440fca6389355ce2c4bfabdbf6934de0 |
| publicationDate |
2015-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2015157009-A1 |
| titleOfInvention |
Pure plant waste water purification and recycle |
| abstract |
Disclosed are methods for purifying aqueous waste streams from a pure terephthalic acid (PTA) manufacturing plant and recycling of the purified water back into the PTA plant. Specifically, provided is a process for treating an aqueous eluent stream generated by a pure plant mother liquor solvent extraction process by raising the pH of the aqueous stream with an alkali, filtering the adjusted stream; and contacting the filtered stream with a reverse osmosis unit to form a demineralized water stream. Raising the pH of the aqueous stream with an alkali converts the soluble metal salts to insoluble compounds, while also converting both soluble and insoluble organic acids to the corresponding acid salts. The filter can be a standard ultrafiltration membrane, which removes the insoluble metal compounds and other remaining insoluble components. The reverse osmosis unit removes organic acid salts, including sodium salts, while balancing the pH. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105417774-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105417774-A |
| priorityDate |
2014-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |