Wastewater treating biological film tank
US5190646A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 11, 1991 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Mar 11, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A small-sized, low cost to manufacture and use wastewater treating biological film tank by which wastewater produced in a single home can be treated in each home. A treating tank has arranged therein multi continuous-pore soft ceramic biological film elements. Waste or raw water is supplied into the tank through a waste/raw water supply pipe arranged in the top of the tank, pushed up through a cylindrical guide by the action of air bubbles forced into the tank through an air bubble generator arranged in the bottom of the tank, and then forced to flow over the cylindrical guide into and through the multi continuous-pore soft ceramic biological film elements wherein the water is purified by microorganisms which digest the nutrients in the waste or raw water. The surface area of each multi continuous-pore ceramic biological film element is about 25 times larger than the surface area of a conventional plastic biological film element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.