| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-5236
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-203
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-103
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-722
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-705
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F9-00 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-20 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-72
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-70
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F9-04 |
| filingDate |
2021-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2022-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2022-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CN-113072211-B |
| titleOfInvention |
Method for treating high-arsenic ferrate wastewater and recovering copper and iron |
| abstract |
The invention relates to a method for treating high-arsenic ferrate wastewater and recovering copper and iron, belonging to the field of hydrometallurgy. Next, adding a certain amount of hydrogen peroxide into the liquid to oxidize the 2-valent iron ions in the liquid into 3-valent iron ions, then adding a certain amount of sodium hydroxide solution to form ferric hydroxide precipitate, performing solid-liquid separation, and recovering the ferric hydroxide. The treated wastewater can meet the requirement of production backwater utilization, and simultaneously, the environmental pollution is reduced. |
| priorityDate |
2021-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |