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A case study of a pilot high rate algal pond for the treatment of fish farm and domestic wastewaters
Journal of chemical technology and biotechnology (1986), 2015-06, Vol.90 (6), p.1094-1101
Posadas, Esther
Muñoz, Adriana
García-González, Mari-Cruz
Muñoz, Raul
García-Encina, Pedro Antonio
2015
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Posadas, Esther
Muñoz, Adriana
García-González, Mari-Cruz
Muñoz, Raul
García-Encina, Pedro Antonio
Titel
A case study of a pilot high rate algal pond for the treatment of fish farm and domestic wastewaters
Ist Teil von
Journal of chemical technology and biotechnology (1986), 2015-06, Vol.90 (6), p.1094-1101
Ort / Verlag
Chichester, UK: John Wiley & Sons, Ltd
Erscheinungsjahr
2015
Quelle
Wiley Online Library All Journals
Beschreibungen/Notizen
ABSTRACT BACKGROUND Microalgae‐based technologies have emerged as a promising approach for simultaneous wastewater treatment and fish food production able to overcome the main limitations in the aquaculture sector. The current study focused on the mechanisms of carbon and nutrient removal from fish farm and domestic wastewaters in a 180 L outdoors pilot high rate algal pond (HRAP) at different hydraulic retention times (HRTs) considering water evaporation losses. RESULTS Maximum chemical oxygen demand, total Kjeldahl nitrogen and total phosphorus removal efficiencies of 77 ± 9%, 83 ± 10% and 94 ± 6%, respectively, were recorded during the treatment of fish farm wastewater at 10 d of HRT. Carbon and nitrogen were removed by assimilation into biomass (52 ± 12% and 74 ± 22%, respectively) and stripping, while phosphorus was mainly assimilated into biomass (69 ± 23%). Carbon stripping, along with the low carbon and nutrient loading rates supplied, resulted in low biomass productivities (maximum of 5 g m−2 d−1). A successful solids removal was achieved in the settler (82 ± 18%), which entailed effluent solid concentrations below the maximum permissible discharge limit. CONCLUSION Despite the successful wastewater treatment supported by the HRAP, the high water evaporation losses (up of 15 L m−2 d−1) could compromise the technical and environmental viability of this green wastewater treatment technology. © 2014 Society of Chemical Industry
Sprache
Englisch
Identifikatoren
ISSN: 0268-2575
eISSN: 1097-4660
DOI: 10.1002/jctb.4417
Titel-ID: cdi_proquest_miscellaneous_1685831360
Format
–
Schlagworte
Algae
,
bacteria
,
Biomass
,
bioreactors
,
biotreatment
,
Carbon
,
environmental biotechnology
,
Farms
,
Fish
,
Nutrients
,
Ponds
,
Wastewater treatment
,
wastewater treatment and waste minimisation
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