http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103551025-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e164bcc4bd54075650f89b687ea057ff |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F103-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F9-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-79 |
| filingDate | 2013-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d813027b4654ee351b58e7fdff3d1da8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_16dc0a119a5137ae106101f1333d173f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_76f98d1a523097c3527c32a43360ba55 |
| publicationDate | 2015-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103551025-B |
| titleOfInvention | Harmless treatment method of arsenic-containing flue dust |
| abstract | The invention relates to a harmless treatment method of arsenic-containing flue dust, and belongs to the environment engineering and science field. The method comprises the following steps: adding a dilute acid and hydrogen peroxide in a water extracting process of the arsenic-containing flue dust to realize acidic oxidation extraction, adding high valence iron having a weight 0.8-2.5 times the weight of arsenic to the obtained extraction liquid to form insoluble arsenic acid iron slag, carrying out high valence iron salt dearsenification, adding high valence iron having a weight 3-6 times the amount of arsenic to the obtained dearsenified high valence iron salt filtrate, adjusting the pH value to 6-9 by using ammonia water, and carrying out depth adsorption dearsenification to obtain a filtrate having an arsenic content lower than a discharge standard of 0.5mg/L to realize the harmless treatment method of arsenic-containing flue dust. The method fully utilizes the high solubility characteristic of pentavalent arsenic, allows the water consumption in the extraction process to be lower than that in the prior art and the temperature of the reaction process to be lower than a boiling temperature, realizes the high extraction rate of arsenic, and reduces the water consumption and the energy consumption. |
| priorityDate | 2013-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 64.