Biochemically enhanced hybrid anaerobic reactor
US5228995A · kind A · utility
Inventor
Key dates
| Filing date | Apr 23, 1992 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Apr 23, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/917
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A biochemically enhanced hybrid anaerobic reactor (BEHAR) system has been developed for treatment of high strength industrial wastewaters. The process is designed and operated based on specific criteria developed around critical biochemical and microbiological principles of the facultative and anaerobic microorganisms involved in anaerobic treatment. Biological kinetic relationships developed by the inventor for substrate removal, methane gas production, and biogas quality control as a function of the mass substrate loading rate are used for designing and operating the BEHAR process. A specific formulation of biological growth micronutrients has been developed for enhancing the anaerobic treatment process. Ferric chloride, one of the chemicals used as a micronutrient, is also utilized for sulfide toxicity control, biogas cleaning without scrubbing, and odor control. Magnesium hydroxide is also used as a micronutrient while offering the added benefits of sulfide toxicity control, biogas cleaning without scrubbing, odor control, and addition of alkalinity and buffering capacity to the BEHAR system, along with sodium toxicity control. Various combinations of ferric or ferrous salts an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.