http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S62155987-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7c7d4d7cff9e6e5a5157f48a59ee2e46 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-42 |
| filingDate | 1985-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a39c041ab343853311740c39f91f9249 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4c397b6286de60b46659fe2347582034 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7f6b783d5dd5879d9465d5807a344cae http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_15a934bdfbbfb6f87575a82f17efa927 |
| publicationDate | 1987-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S62155987-A |
| titleOfInvention | Treatment of dithionic acid-containing waste water wherein nitrite ion coexists |
| abstract | PURPOSE: To remove a dithionic acid from dithionic acid-contg. waste water in which nitrite ions co-exist by adding a sulfamic acid to said waste water to decompose away the nitrite ions and brining such waste water into contact with a weakly basic anion exchange resin which is made into a sulfic acid type. n CONSTITUTION: After the dithionic acid-contg. waste water in which the nitrite ions co-exist is adjusted to ≤3pH, the sulfamic acid is added to the waste water at such a ratio at which said acid is incorporated therein at 1W1.5 equiv. of the nitrite ions to decompose away the nitrite ions. The waste water is then brought into contact with the weakly basic anion exchange resin which is made into the sulfuric acid type to remove the dithionic acid. As a result, the nitrite ions are efficiently decomposed to harmless gaseous N 2 and the COD value of the treated water is decreased. The treated water does not exert an ill effect to a subsequent ion exchange device. The treatment is thus executed without increasing the COD value of the final treated water. n COPYRIGHT: (C)1987,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2006305462-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100501094-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100501662-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2019205983-A |
| priorityDate | 1985-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.