http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110790417-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-105 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-283 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-5245 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-76 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-725 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F9-00 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F103-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F9-04 |
| filingDate | 2018-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-12-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-12-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110790417-B |
| titleOfInvention | Treatment method of hardware and electronic electroplating wastewater |
| abstract | The invention discloses a treatment method of hardware and electronic electroplating wastewater, which comprises the steps of adjusting and keeping the pH of the wastewater to 10.5-11.5 by using lime emulsion, and adding sodium hypochlorite solution to oxidize pollutants such as sodium cyanide; adding a ferrous chloride solution, precipitating a carboxyl-containing organic acid coordination agent in the wastewater together with ferrous ions and calcium ions, reducing hexavalent chromium into trivalent chromium by the ferrous ions, generating chromium hydroxide precipitate, and adsorbing organic pollutants in the wastewater by using activated carbon; adding flocculant to aggregate the precipitate and filtering to separate precipitate; and adjusting the pH value of the wastewater to 6-9. The invention establishes a new method for effectively removing the organic acid coordination agent containing carboxyl and the heavy metal ions in the wastewater by using the synergistic effect of ferrous ions and calcium ions, and has the advantages of simple and feasible process, low treatment cost and better market application prospect. |
| priorityDate | 2018-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 89.