http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102557222-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e0a6eb64ce528b13450a0401b1d26db |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F9-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-62 |
| filingDate | 2012-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-06-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9241b2ab6cbf7be87a1f11d5d68106ab http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_743e44f2ac282314dc6c86263c65bab5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d7c8259a3751ab15fa4d926c5fce30d7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1e22dde3514b64c500f6bd9662520e24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4d42d814f9133cf779808863d0087e1c |
| publicationDate | 2013-06-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102557222-B |
| titleOfInvention | Method for removing trace arsenic from aqueous solution |
| abstract | The invention discloses a method for removing trace arsenic from an aqueous solution. The method comprises the steps of: adjusting the pH value of an arsenic-containing aqueous solution with an acid or a base by utilizing the adsorption and coprecipitation principle through culturing and analyzing the plants growing in arsenic environment, adding a copper-containing reagent, an iron-containing reagent or a zinc-containing reagent or simultaneously or respectively adding a mixture of two or more of the copper-containing reagent, the iron-containing reagent and the zinc-containing reagent in the presence of calcium salts, magnesium salts and carbonate, and precipitating, wherein the arsenic content in the water, from which arsenic containing slag is separated, is detected to be less than 0.01mg/L. The method has the characteristics that the trace arsenic element in the aqueous solution can be removed by controlling the addition amounts of the copper-containing reagent, the iron-containing reagent and the zinc-containing reagent as well as the pH value of the solution; the use raw materials are economical and easily available, and harmful elements are not introduced to the system, thus the method is an environment-friendly and economical treatment process; and the process can be widely applied to treatment of arsenic-containing wastewater discharged in the fields of metallurgy, chemical industry, pesticide, pigment, fuel, papermaking, leather manufacture and the like. |
| priorityDate | 2012-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 131.