http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109607849-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2303-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-001 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F9-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F9-04 |
| filingDate | 2018-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109607849-B |
| titleOfInvention | Method for treating low-ammonia nitrogen uranium-containing wastewater in nitrate radical system |
| abstract | The invention relates to a method for treating low-ammonia nitrogen uranium-containing wastewater in a nitrate system, which comprises the following steps: (1) pretreating wastewater; (2) obtaining nitrate radical-resistant chelate uranium absorption resin, fully wetting the resin with water, and then loading the resin into an adsorption tower, wherein the height of a resin bed is more than or equal to 1 m; (3) ejecting the residual wastewater in the tower by using 1-3BV of clear water for the uranium-loaded saturated resin obtained in the step (2), introducing a prepared eluent, and leaching for more than or equal to 10min to obtain an eluent; (4) and (4) washing the resin washed in the step (3) with water until the total concentration of carbonate and bicarbonate in the washing water is lower than 1.5g/L, and returning the resin washed with water again to adsorb uranium. The method not only realizes effective recovery of trace uranium under a nitrate radical system, but also realizes effective removal of low-concentration ammonia nitrogen in the wastewater, and finally achieves the purpose of standard-reaching discharge of the wastewater. |
| priorityDate | 2018-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.