http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107531516-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-441 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-70 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D65-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D65-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-70 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-04 |
| filingDate | 2016-03-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107531516-B |
| titleOfInvention | Pretreatment method for reverse osmosis membrane device and water treatment device |
| abstract | The invention provides a pretreatment method of a reverse osmosis membrane device and a water treatment device, when an oxidizing chemical is added into water containing an oxidant to perform RO membrane treatment, a reducing agent is added to prevent membrane degradation of the RO membrane caused by the residual oxidant and prevent decomposition of the oxidizing chemical caused by the added reducing agent, thereby effectively obtaining the water treatment effect of the oxidizing chemical. Nitrous acid and/or a salt thereof is used as the reducing agent. Nitrous acid and/or its salt reduces a residual oxidizing agent such as chlorine and, even if a residual portion remains, does not undergo an oxidation-reduction reaction with an oxidizing chemical such as chloroaminosulfonic acid at an actual use concentration, and does not reduce and remove such an oxidizing chemical to reduce the concentration of an active ingredient. |
| priorityDate | 2015-06-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 70.