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Resourceful application and mechanism of oyster shell-microalgae synergistic system:Sustainable treatment of harsh low carbon nitrogen ratio actual wastewater.
- Source :
-
Environmental Research . Jul2024:Part 1, Vol. 252, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- Microalgal technology holds great promise for both low C/N wastewater treatment and resource recovery simultaneously. Nevertheless, the advancement of microalgal technology is hindered by its reduced nitrogen removal efficiency in low C/N ratio wastewater. In this work, microalgae and waste oyster shells were combined to achieve a total inorganic nitrogen removal efficiency of 93.85% at a rate of 2.05 mg L−1 h−1 in low C/N wastewater. Notably, over four cycles of oyster shell reuse, the reactor achieved an average 85% ammonia nitrogen removal extent, with a wastewater treatment cost of only $0.092/ton. Moreover, microbial community analysis during the reuse of oyster shells revealed the critical importance of timely replacement in inhibiting the growth of non-functional bacteria (Poterioochromonas_malhamensi). The work demonstrated that the oyster shell - microalgae system provides a time- and cost-saving, environmental approach for the resourceful treatment of harsh low C/N wastewater. [Display omitted] • The removal rate of TIN was 2.05 mg L−1·h−1 in oyster shell - microalgae system. • The average NH 4 +-N removal rate reached 85% when oyster shells were reused. • Replacing oyster shells every 3 cycles prevents non-functional bacteria growth. [ABSTRACT FROM AUTHOR]
- Subjects :
- *OYSTER shell
*SEWAGE
*WASTE recycling
*WASTEWATER treatment
*OYSTERS
Subjects
Details
- Language :
- English
- ISSN :
- 00139351
- Volume :
- 252
- Database :
- Academic Search Index
- Journal :
- Environmental Research
- Publication Type :
- Academic Journal
- Accession number :
- 177602554
- Full Text :
- https://doi.org/10.1016/j.envres.2024.118775