Experimental validation of a simple dynamic model of a laboratory scale recirculating aquaculture system fitted with a submerged membrane bioreactor

Abstract

Submerged membrane bioreactors (sMBR's) are a promising technology for nitrogen removal in recirculating aquaculture systems (RAS's). However, there are still relatively few reports on the experimental application of this strategy. In this study, a laboratory-scale system, mimicking a RAS fitted with a sMBR, was designed and automated, and a simple dynamic sMBR model including biological and physical phenomena was validated. The system was analyzed based on measurements collected by a data logging structure involving a programmable logic controller (PLC), an industrial network protocol and a LabView application software. This study confirms the suitability of sMBR systems within aquaculture applications. The dynamic model has good predictive capabilities and could be used for the design of advanced control structures, such as model predictive control.

The Influence of Aquaculture Effluents on the Prevalence and Biocides Resistance of Opportunistic Pseudomonas fluorescens Bacteria in the Drwęca River Protected under the Natura 2000 Network

“…The membrane technology with ultrafiltration or microfiltration is dedicated to the removal of the fraction of fine and colloidal particle sizes to improve water quality over the period of fish rearing [15]. That way, the nutrient supply per bacterium is reduced and ultimately a competitive environment favoring K-selection of the bacteria in the water may be achieved.…”

“…piperacillin (PRL, 100 µg); 2 ceftazidime (CAZ, 30 µg); 3 ampicillin (AMP, 30 µg); 4 mezlocillin (MEZ, 75 µg); 5 cefotaxime (CTX, 30 µg); 6 ciprofloxacin (CIP, 5 µg); 7 norfloxacin (NOR, 10 µg); 8 cotrimoxazole (SXT, 25 µg); 9 gentamicin (CN, 10 µg); 10 tobramycin (TOB, 10 µg); 11 tigecycline (TGC, 15 µg); 12 tetracycline (TE, 30µg);13 multiple antibiotic resistance (MAR index);14 Steridial (Ster ≥ 25 mL•m −3 );15 chloramine T (Chlor ≥ 2 0 mg•L −1 ); "-" denotes missing data.…”