Synergistic cooperation between wastewater-born algae and activated sludge for wastewater treatment: influence of algae and sludge inoculation ratios
Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
Standard
in: Bioresource Technology, Jahrgang 105, 02.2012, S. 67-73.
Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
Harvard
APA
Vancouver
Bibtex
}
RIS
TY - JOUR
T1 - Synergistic cooperation between wastewater-born algae and activated sludge for wastewater treatment
T2 - influence of algae and sludge inoculation ratios
AU - Su, Yanyan
AU - Mennerich, Artur
AU - Urban, Brigitte
PY - 2012/2
Y1 - 2012/2
N2 - An algal-bacterial culture, composed of wastewater-born algae and activated sludge, was cultivated to treat domestic wastewater and accumulate biomass simultaneously. The influence of algae and sludge inoculation ratios on the treatment efficiency and the settleability of the accumulated biomass were investigated. There was no significant effect of the inoculation ratios on the chemical oxygen demand removal. Comparatively, the nutrients removal and related mechanism were varied with different inoculation ratios. The highest nitrogen and phosphorus removal efficiencies were observed with 5:1 (algae/sludge) culture (91.0. ±. 7.0% and 93.5. ±. 2.5%, respectively) within 10. days, which was 5-40% higher and 2-4. days faster than those with other inoculation ratios. The biomass settleability was improved with the assistance of sludge, and the 1:5 (algae/sludge) culture showed the best settleability. Furthermore, 16S rDNA gene analysis showed that the bacterial communities were varying with different algae and sludge inoculation ratios and some specific bacteria were enriched during operation.
AB - An algal-bacterial culture, composed of wastewater-born algae and activated sludge, was cultivated to treat domestic wastewater and accumulate biomass simultaneously. The influence of algae and sludge inoculation ratios on the treatment efficiency and the settleability of the accumulated biomass were investigated. There was no significant effect of the inoculation ratios on the chemical oxygen demand removal. Comparatively, the nutrients removal and related mechanism were varied with different inoculation ratios. The highest nitrogen and phosphorus removal efficiencies were observed with 5:1 (algae/sludge) culture (91.0. ±. 7.0% and 93.5. ±. 2.5%, respectively) within 10. days, which was 5-40% higher and 2-4. days faster than those with other inoculation ratios. The biomass settleability was improved with the assistance of sludge, and the 1:5 (algae/sludge) culture showed the best settleability. Furthermore, 16S rDNA gene analysis showed that the bacterial communities were varying with different algae and sludge inoculation ratios and some specific bacteria were enriched during operation.
KW - Biology
KW - 16S rDNA gene sequencing
KW - Algae/activated sludge inoculum ratio
KW - Algal-bacterial culture; Settleability
KW - Settleability
KW - wastewater treatment
KW - 16S rDNA gene sequencing
KW - Algae/activated sludge inoculum ratio
KW - Algal-bacterial culture
KW - Settleability
KW - Wastewater treatment
KW - Ecosystems Research
UR - http://www.scopus.com/inward/record.url?scp=84855243391&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2011.11.113
DO - 10.1016/j.biortech.2011.11.113
M3 - Journal articles
C2 - 22189078
VL - 105
SP - 67
EP - 73
JO - Bioresource Technology
JF - Bioresource Technology
SN - 1873-2976
ER -