http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111423045-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5db9b6f69c1e528ec37cad55f62e6efa |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-048 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-001 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2001-422 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F9-00 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F103-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F9-10 |
| filingDate | 2020-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b148216e321fb0ce293cc4560cc9388c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4750aa0d16bc5fe6de79c276b8f2733c |
| publicationDate | 2020-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111423045-A |
| titleOfInvention | Electroplating coarsening wastewater recovery chromic anhydride circulation treatment process |
| abstract | The invention discloses a recycling treatment process for recovering chromic anhydride from electroplating coarsening wastewater, which comprises the steps of recovering chromic anhydride and utilizing electroplating wastewater, wherein a combined process of evaporating after resin impurity removal and recovering chromic anhydride through ion exchange and a closed-loop circulation process for wastewater are adopted, under the condition of not changing the pH value, multi-stage cleaning water is subjected to impurity removal through special impurity-removal resin, the wastewater subjected to impurity removal enters a decompression evaporator, the evaporator evaporates the cleaning water until the concentration of chromic anhydride in the finished solution reaches 300 g/L, the finished solution is returned to a coarsening tank for use, condensate enters a No. 6 cleaning tank and is used as the cleaning water for reuse, the No. 7 cleaning tank adopts special resin for removing hexavalent chromium, special resin for removing trivalent chromium and ionic resin, and water is discharged and enters a No. 8 cleaning tank after the series connection, so that the conductivity of the cleaning water of the No. 7-8 cleaning tank is kept at 1-2 us/cm forever, the closed-loop circulation process for recovering chromic anhydride/wastewater from electroplating coarsening wastewater by plastic is realized, and. |
| priorityDate | 2020-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.