System and method for combined microorganism degradation and air sparging-soil vapor extraction of oil-containing sludge
US10611653B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2018 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Jul 26, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A system and method for combined microorganism degradation and air sparging-soil vapor extraction (AS-AVE) of oil-containing sludge can include a microorganism-adding unit, an AS-SVE unit, a metering-feeding layer, a mixing layer, a material discharging layer and a crawler-type conveyor. In some embodiments the microorganism-adding unit and the AS-SVE unit can include a microorganism storage tank and an AS-SVE storage tank. In some embodiments, the metering-feeding layer can include a valve, a pressure gauge, a flowmeter, a feeding chamber. In some embodiments, the mixing layer can include pipeline connectors and a stirrer. In some embodiments, the material discharging layer is mainly for transporting the treated soil away. The system can remove petroleum, petroleum hydrocarbons, volatile organic compounds (VOCs), and degradable and extractable contaminants from oil-containing sludge by a method combining microorganism degradation, mechanical stirring, AS-AVE and the like, thereby achieving soil remediation and automatic treatment in a large scale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.