http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108503000-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-52 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-52 |
| filingDate | 2018-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-11-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-11-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108503000-B |
| titleOfInvention | Method for treating mercury-containing wastewater |
| abstract | The invention relates to a method for treating mercury-containing wastewater, which comprises the following stepsThe following steps: A. will contain [ HgI 4 ] 2‑ Waste water is added into a container, and Hg-containing water is gradually added 2+ Waste water, precipitation, added Hg-containing 2+ Until the waste water does not generate precipitate any more; B. standing, filtering to obtain HgI solid and filtrate, and washing with deionized water; C. air drying, drying to obtain HgI finished product; D. judging the existence form of residual mercury in the filtrate; E. when the residual mercury in the filtrate exists in the form of [ HgI 4 ] 2‑ In the meantime, Hg-containing solution is gradually added 2+ Solution of added Hg-containing 2+ Repeating the step B to the step D when the solution does not produce any precipitate; F. when the residual mercury in the filtrate is in the form of Hg 2+ While gradually adding the solution containing I ‑ Solution of added I-containing ‑ And D, repeating the steps B to D when the solution does not generate precipitates any more. The invention has the advantages that: the waste water with two different mercury existing forms is reacted to obtain HgI precipitate, and the mercury is separated from the waste water, so that the operation is simple, the mercury recovery rate is high, and secondary pollution can not be caused. |
| priorityDate | 2018-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.