The long-term effects of wall attached microalgal biofilm on algae-based wastewater treatment.

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 Technol

journal_title

Bioresource technology

authors

Su Y,Mennerich A,Urban B

doi

10.1016/j.biortech.2016.06.099

subject

Has Abstract

pub_date

2016-10-01 00:00:00

pages

1249-52

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(16)30916-6

journal_volume

218

pub_type

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