Industrial waste water treatment cleaning apparatus
US6458268B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2000 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | Jun 20, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2209/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method and apparatus for controlling waste water treatment is disclosed. A feed-forward controller adjusts chemical injection pumps in response to signals from the contaminant zone, while delays to accommodate the time required for the contaminated water to reach the reaction or DAF tank are provided. Flow rate information from downstream of an equalization tank, but upstream of the chemical injection pumps, is monitored. By using both the data from the contamination points and the flow meter, the chemical injection pumps more accurately provide the necessary amount of chemicals to accommodate both volume of contaminated water and contaminant concentrations in the waste water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.