| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c74a5d801088657f8934664c46bbc515
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_438a0f3cf04aceb8d8d2c55b085d7d56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f1347ec805fe65abf2c7e26aed42e483
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e2ba9a73c06c8aa5bdbf0d299479c270
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d63d76c9d774eea9ea839ef1d9be8c83 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-07
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-365
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2301-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2301-046
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-003
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-055
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-5236
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-006
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2209-19
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2001-007 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-5236
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F5-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F9-00 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F103-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F9-00 |
| filingDate |
2019-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_87db8d4c8639d3ea0cdca2fa0ebd8ce5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1febb36b42bb0f31b67e312d22430b0f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0a6f1282497021cc4c98ad6e625f762c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e5a60ac687618a63f578b579074aeafa |
| publicationDate |
2020-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2020014109-A1 |
| titleOfInvention |
Process for treating frac flowback and produced water including naturally occurring radioactive material |
| abstract |
A process for treating frac flowback that contains barium, naturally occurring radioactive materials (NORM) and hardness for minimizing the amount of sludge produced that contains hazardous levels of NORM by employing a dual stage precipitation process. In the first stage a sulfate source is mixed with the frac flowback and barium sulfate and NORM is precipitated, t he frac flowback is subjected to a solids-liquid separation process to produce a first effluent and a first sludge. In the second stage hardness is precipitated from the first effluent by addition of an alkali reagent, said first effluent is also subjected to solids-liquid separation producing a second effluent and a second sludge. The first sludge is recycled and mixed with the frac flowback and the sulfate source in a sufficient amount t o maintain the NORM concentration in the second sludge at or below a threshold level. |
| priorityDate |
2018-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |