Improved phosphorus removal in wastewater through combined bacterial and algal treatment

MOspace/Manakin Repository

Breadcrumbs Navigation

Improved phosphorus removal in wastewater through combined bacterial and algal treatment

Please use this identifier to cite or link to this item: http://hdl.handle.net/10355/15989

[+] show full item record


Title: Improved phosphorus removal in wastewater through combined bacterial and algal treatment
Author: Stark, Kevin D.
Keywords: phosphorus luxury uptake
algae
nutrient removal
wastewater treatment
Date: 2012
Publisher: University of Missouri--Columbia
Abstract: Increasingly strict nutrient regulations propel the need to develop more sustainable methods to remove nitrogen (N) and phosphorus (P) from wastewater. Algae show promise in their ability to uptake P. The purpose of this research was to propose an ANOA system (ANoxic, Oxic, Algae), testing a bench scale modified Ludzack-Ettinger (MLE) system coupled with an algaebased continuous stir tank reactor (algae CSTR). The system was tested for its P treatment efficacy, focusing on the performance of the algae CSTR. The algae system could uptake up to 55% of P at the influent concentration of 6 mg/L. However, the presence of large flocs of bacteria in the algae CSTR resulted in a decrease and eventually a ceasing of P uptake. Phosphorus adsorption and uptake resulted in the algal biomass containing P at about 6% of the total biomass dry weight. Based on cellular P distribution with about 90% extracellular (physic-chemical sorbed) and 10% intracellular P (biological uptake) by using an oxalic acid rinse reagent, P removal in algae CSTR was mainly attributed to physical/chemical processes including P adsorption and coprecipitation with cations at relatively high pH environment due to algal growth.
URI: http://hdl.handle.net/10355/15989
Other Identifiers: StarkK-072612-T589
Rights: Access is limited to the University of Missouri - Columbia.

This item appears in the following Collection(s)

[+] show full item record