| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1f78b2b1e4c3813750fe8014f1e2f19f |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-442
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W10-37
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-5236 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D5-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-442
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D5-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-5236
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D5-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D3-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D3-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D5-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-52 |
| filingDate |
2017-11-22^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2023-01-03^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b441f3aebd37514d01c670335fedf935
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ae3d6eacab6b571f0412320450814d4e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0a2bbbccbab09ecf3b1406e263ac062e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_92a405342bbf5d7b0018fd2c2ddb934b |
| publicationDate |
2023-01-03^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-3103568-C |
| titleOfInvention |
Methods for producing potassium sulfate and sodium chloride from wastewater |
| abstract |
A method for producing potassium sulfate from a wastewater stream containing sodium and sulfate is disclosed. The wastewater stream is directed to a membrane separation unit to produce reject and permeate streams. The reject stream is concentrated to form a first brine solution or slurry, which is directed to a glaserite reactor and mixed with potassium liquor to produce glaserite crystals that are separated and directed to a potassium sulfate reactor and mixed with a potassium chloride source to form potassium sulfate crystals that are separated. The potassium chloride source mixed with the glaserite crystals in the potassium sulfate reactor forms the potassium liquor that is mixed with the first brine solution or slurry in the glaserite reactor. The permeate stream is concentrated to form a second brine stream or a second slurry, which is directed to a sodium chloride crystallizer where sodium chloride crystals are crystallized and separated. |
| priorityDate |
2016-12-12^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |