Submersible biological filter for the purification of waste water
US5380439A · kind A · utility
2Cited by
8References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 19, 1992 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Mar 19, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/72
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An immmersible biological filter apparatus and method for the purification of waste water is disclosed. The apparatus has bacterial supports comprising at least two holding members and an assembly of skeins, wherein each skein comprises bands of plastic material disposed in a spiral arrangement around and between said holding members, thereby providing a substantial filter surface area on said bands between said members, wherein said bands are essentially continuous.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.