MBBR LagoonGuard® vs. Aerated Lagoon Expansion CARBON FOOTPRINT Technology Comparison Analysis Two options were studied in order to meet new BOD effluent limits at this small WWTP: build additional lagoons or add an MBBR in a LagoonGuard® configuration. An AnoxKaldnes™ LagoonGuard® MBBR technology was selected and constructed. Technology Design Data The existing lagoon treatment plant consists of four lagoons of respectively 41,400 m 3 , 29,80

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