http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103304055-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7458ec7a5e228caf43c7131a64b6fbf9 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W10-37 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F103-36 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F9-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C235-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C65-11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-24 |
| filingDate | 2013-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-05-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9b5e3b1ca499e8a89f65b5c2144b5146 |
| publicationDate | 2015-05-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103304055-B |
| titleOfInvention | Method for treating production wastewater of naphthol AS and derivatives thereof and recovering useful materials therein |
| abstract | The invention discloses a method for treating production wastewater of naphthol AS and derivatives thereof and recovering useful materials therein. The method comprises the following steps of: diluting the production wastewater of naphthol AS and derivatives by using tap water or water obtained after treatment of the method, adjusting the pH value, feeding ferrous sulfate, stirring for flocculation and separating out the precipitate, recovering naphthol AS and derivatives thereof as well as 2,3-acid in the flocculating constituent A2, feeding hydrogen peroxide to the supernatant A1 at a certain pH, stirring for precipitation separation, recovering ferric phosphate in the flocculating constituent B2, supplementing ferrous sulfate and hydrogen peroxide to the supernatant B1, and then performing ultraviolet radiation for certain time, and then carrying out up-to-standard release of the water or using the water as supplementary water for diluting. The method provided by the invention is capable of recovering useful materials in the wastewater while purifying the wastewater, thereby realizing recycling of pollutants. The method has the characteristics of short process flow, good water quality of the final yielding water, simplicity in operation and management, low equipment investment and operating cost and convenience for popularization and application. |
| priorityDate | 2013-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 59.