Related Experiment Videos
Metabolic factors affecting enhanced phosphorus uptake by activated sludge
Applied Microbiology
|October 1, 1971
Summary
Activated sludge rapidly removes orthophosphate from wastewater. This biological phosphorus uptake is efficient in various water types and influenced by pH, temperature, and specific inhibitors.
Area of Science:
- Environmental Microbiology
- Water Treatment Technologies
Background:
- Orthophosphate is a common pollutant in wastewater.
- Effective removal of phosphorus is crucial for preventing eutrophication.
Purpose of the Study:
- To investigate the phosphorus removal capabilities of activated sludge from different treatment plants.
- To determine the biological nature and optimal conditions for phosphorus uptake by activated sludge.
Main Methods:
- Activated sludge from Rilling Road and Hyperion treatment plants were tested.
- Orthophosphate and (32)P radioactivity removal were assessed in various water types.
- Factors influencing uptake, including pH, temperature, and chemical inhibitors, were evaluated.
Main Results:
- Activated sludge removed all orthophosphate within 3 hours.
- Phosphorus removal occurred independently of external energy sources or ions.
- Uptake exhibited optimal biological conditions (pH 7.7-9.7, 24-37°C) and was inhibited by specific chemical agents.
- Chelating agents did not affect uptake, suggesting a non-metallic ion mechanism.
Conclusions:
- Activated sludge possesses a significant biological capacity for rapid orthophosphate removal.
- The process is primarily biological, influenced by environmental factors and specific metabolic pathways.
- Findings support the use of activated sludge for effective phosphorus management in wastewater treatment.