http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104909506-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_724ebd5f4e3770c1265f1e3135ca28ca |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F9-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D3-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D233-94 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-06 |
| filingDate | 2015-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0c120a028ebd7c5834dfba8d16d0101d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_006b7732c273b302516e90aec16ffed6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_956ef03b6079eb6bebeca3409d3fc871 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_32f5dbfa1fd346e8315c365c6a377c35 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5a0abc080327071c8bd3bb1b43bc9faa http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_58fd43688a12969f6f6891be43f521ab |
| publicationDate | 2015-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104909506-A |
| titleOfInvention | Benzoylmetronidazole production wastewater treatment method |
| abstract | The invention discloses a benzoylmetronidazole production wastewater treatment method, and belongs to the technical field of wastewater treatment. The method comprises the following steps: 1, carrying out reduced pressure concentration on wastewater to reduce the volume of the wastewater to 1/3-2/3 of an original volume, and carrying out solid-liquid separation on the concentrated wastewater at 35-65DEG C to obtain benzoylmetronidazole; 3, crystallizing a filtrate obtained in step 1 at 5-10DEG C, and carrying out solid-liquid separation to obtain sodium chloride; 3, acidifying a filtrate obtained in step 2 at 5-10DEG C by using an acid to adjust the pH value to 6-7, and crystallizing at 5-10DEG C to obtain benzoic acid; and 4, heating a filtrate obtained in step 3 to 60-90DEG C, continuously adding oxidants ferrous sulfate and hydrogen peroxide, and reacting for 10-50min. The method allows benzoylmetronidazole, benzoic acid and sodium chloride to be respectively recovered, and reduces the indexes of the COD and harmful substances in the obtained treated waste liquid to allowed discharge ranges. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105776707-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105776707-A |
| priorityDate | 2015-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.