| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4436a2e49024c140e289aa3d227934aa |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-346
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-003
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-103
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-20 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-78
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-722
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-5236 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F103-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F103-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-10 |
| classificationIPCInventive |
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/C02F1-78 |
| filingDate |
2019-09-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a12f7dd5e8cc9a17c3ad62511e837135
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f372e769bc97e2a0efb021bbafbe5679 |
| publicationDate |
2021-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CN-113165922-A |
| titleOfInvention |
Method for precipitation of arsenic and heavy metals from acidic process water |
| abstract |
The invention relates to a method for the precipitation of arsenic and heavy metals from acidic process water, in particular sulfuric acid process water (12), containing arsenic and heavy metals, said method comprising a precipitation process stage (II) with a precipitation stage (D) , in a precipitation stage, arsenic is precipitated together with at least one major heavy metal, wherein arsenic is precipitated as arsenic sulfide and at least one major heavy metal as metal by adding a sulfide-precipitation reagent (20) to the process water (12) Sulfide precipitation. Said precipitation process stage (II) comprises a conditioning stage (C) which is carried out before the precipitation stage (D) and during which a conditioning agent (16) is added to the acidic process water (12), said conditioning agent affecting at least Properties of precipitated arsenic sulfide, especially filtration properties. |
| priorityDate |
2018-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |