http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20020023378-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2e52fec7faedfdd19f539b57151ba3f1 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-42 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-62 |
| filingDate | 2002-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_468175f5a73b22e5615b943c3979ac94 |
| publicationDate | 2002-03-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20020023378-A |
| titleOfInvention | Treatment method of wastewater containing copper using ion exchange resin |
| abstract | The present invention relates to a method for recovering copper from printed circuit board washing waste liquid using an ion exchange resin and an evaporation concentration method.n n n Recently, the demand for various electronic products increases, and accordingly, the supply of printed circuit boards (PCBs) is rapidly increasing. In the final process of manufacturing printed circuit boards, surface washing is essential by using a high concentration of hydrochloric acid (HC1) solution, and a large amount of copper chloride (CuCl 2 ) waste is generated. This copper chloride waste is a toxic chemical and can only be released to the outside causing serious environmental pollution. Despite the large number of PCB manufacturers and the amount of waste liquid generated in Korea, the development of in-house technologies has not been done so far. Moreover, it is difficult to introduce foreign technologies.n n n As described above, when neutralizing or entrusting the PCB cleaning waste solution, a large amount of heavy metal sludge is generated as well as an irrationality in which valuable metal resources are discarded as they are.n n n Therefore, an object of the present invention is to provide a method for recovering copper from the PCB cleaning waste liquid. According to the present invention, there is an effect to prevent the environmental pollution due to industrial wastewater, it is possible to recycle the waste materials by extracting and concentrating heavy metals has the effect of replacing the imported raw materials.n n n In addition, the present invention can act as a replacement of the imported raw material can reduce the cost, there is an effect of reducing the unnecessary waste of waste. |
| priorityDate | 2002-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.