Method and apparatus for installing and removing biologically structured wall systems
US5531895A · kind A · utility
Inventors
Key dates
| Filing date | Jan 18, 1995 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Jan 18, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/901
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The environment in a porous area, such as in an aquifer in controlled to promote the growth of indigenous microorganisms as well as introduced microorganisms. Nutrients and other growth-promoting chemicals are added to cause the organisms to grow and produce a biofilm that retards fluid movement. Tubes are inserted into the target area, and fluids containing nutrients and other chemical are circulated through the porous area, the paths of circulation defining the areas of growth of microorganisms to produce a barrier, referred to as a biowall. After the biowall has served its purpose, it can be dispersed by injecting chemicals to stop growth and/or to kill the microorganisms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.