Abstract:
:The influence of the reactor wall attached biofilm on the nutrient removal performance was investigated in an open photobioreactor during long-term operation. Total nitrogen and phosphorus removal efficiencies were statistically similar between reactor with (reactor A) and without (reactor B) biofilm at the Hydraulic Retention Time (HRT) of 18, 13.5 and 9days. When the HRT reduced to 8days, total nitrogen and phosphorus removal efficiencies in the reactor A were 42.95±5.11% and 97.97±1.12%, respectively, while significant lower removal efficiencies (38.06±5.80% for total nitrogen and 83.14±8.16% for phosphorus) were obtained in the reactor B. The VSS concentrations throughout the test were statistically similar for the two reactors, with a mean value of 0.63±0.25g/l for reactor A and 0.69±0.20g/l for reactor B. This study indicated that the reactor wall attached biofilm supported high phosphorus and nitrogen removal, which may provide insight into the practical implementation of microalgae-based wastewater treatment.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Su Y,Mennerich A,Urban Bdoi
10.1016/j.biortech.2016.06.099subject
Has Abstractpub_date
2016-10-01 00:00:00pages
1249-52eissn
0960-8524issn
1873-2976pii
S0960-8524(16)30916-6journal_volume
218pub_type
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