Controlled operation of a membrane SBR for inhibitory wastewater treatment.
This work presents the design and practical implementation of a control strategy for the operation of a sequencing batch reactor with a submerged membrane. The bioreactor is used for treating wastewater that is inhibitory for sufficiently high concentrations. The strategy combines the use of a robust feeding strategy to ensure biodegradation near an optimal unknown concentration value, using only the dissolved oxygen concentration as feedback signal, and a strategy to minimize membrane fouling based on flux and transmembrane pressure measurements during filtration. The strategy was tested on a 10 L laboratory bioreactor treating synthetic wastewater containing 4-chlorophenol as inhibitory model compound and sole source of carbon. Experimental results show the applicability of the proposed strategy.
Vargas
A
A
Laboratory for Research on Advanced Processes for Water Treatment, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Blvd Juriquilla 3001, Juriquilla 76230, Querétaro, Mexico. avargasc@ii.unam.mx
Sandoval
J L
JL
Buitrón
G
G
D000465:Algorithms; D019149:Bioreactors; D002733:Chlorophenols / Q000302:isolation & purification; D008567:Membranes, Artificial; D010100:Oxygen / Q000032:analysis; D014865:Waste Disposal, Fluid / Q000295:instrumentation*; D018508:Water Purification / Q000295:instrumentation*
D002733:Chlorophenols; D008567:Membranes, Artificial; C029107:4-chlorophenol; D010100:Oxygen