EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/20/2019 | 12:00 PM - 12:15 PM | DISSOLVED INORGANIC CARBON LIMITATION IN FILAMENTOUS ALGAL WASTEWATER TREATMENT FLOWAYS IN NEW ZEALAND | 251 AB
DISSOLVED INORGANIC CARBON LIMITATION IN FILAMENTOUS ALGAL WASTEWATER TREATMENT FLOWAYS IN NEW ZEALAND
Nutrient discharges can stimulate harmful algal blooms, cause fish kills, impair of wildlife habitat, restrict human recreation, and release harmful toxins into drinking water sources. However in the US only 30% of wastewater effluent is treated to remove nutrients. Thus, it is critical to develop and implement technologies to eliminate nutrient pollution from wastewater effluent. One promising approach uses filamentous algae to remove nutrients. Because these algae photosynthesize rapidly in wastewater floways, algal growth may become limited by the availability of dissolved inorganic carbon (DIC). This hypothesis was tested in 3 experiments conducted in New Zealand using 15-m long, 1-cm deep floways. Experiments compared algal growth and nutrient removal with and without the addition of carbon dioxide. Primary treated wastewater infused with carbon dioxide stimulated 30% more algal biomass. However, DIC infused wastewater did not show enhanced nitrogen or phosphorus removal. These experiments are consistent with the hypothesis that DIC can become limiting in large-scale filamentous algal wastewater treatment systems. It is possible that DIC may limit algal production in other nutrient enriched streams exposed to full sun.
- Nutrients
- Water Quality
- Periphyton
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
Troy Keller
(), Columbus State Unviersity, keller_troy@columbusstate.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Rupert Craggs
(), National Institute of Water and Atmospheric Research Ltd, Rupert.Craggs@niwa.co.nz;
ASHA DISCLOSURE:
Financial -
Nonfinancial -