title: Malt house wastewater treatment with settleable algal-bacterial flocs.
abstract: This paper deals with biological treatment of malt house wastewater using algal-bacterial flocs. During three months of testing, optimisation of growth conditions and biomass separation leads to maximisation of biomass production, improved flocs settleability and increased pollutant removal efficiency while maintaining low energy demand. At a high food to microorganism ratio (0.16 to 0.29 kg BOD5 kg(-1) TSS d(-1)), the biological oxygen demand (BOD5), chemical oxygen demand (CODCr), total phosphorus (Ptot) and total suspended solids (TSS) removal efficiencies were all higher than 90%. At a food to microorganism ratio of 0.06 kg BOD5 kg(-1) TSS d(-1), BOD5, CODCr, total nitrogen (Ntot), Ptot and TSS removal efficiencies of 99.5%, 97.6%, 91.5%, 97.8% and 98.4%, respectively, were achieved. The study also proved a strong dependence of removal efficiencies on solar radiation. The results suggest the algae-bacteria system is suitable for treatment of similar wastewater in locations with available land and sufficient solar radiation and temperature during the whole year.
authors.affiliation: AQUA PROCON s.r.o., Palackého tř. 12, 612 00, Brno, Czech Republic E-mail: radka.pesoutova@aquaprocon.cz.
authors.forename: Luboš
authors.initials: L
authors.lastname: Stříteský
authors.affiliation: AQUA PROCON s.r.o., Palackého tř. 12, 612 00, Brno, Czech Republic E-mail: radka.pesoutova@aquaprocon.cz; CREA Hydro&Energy o.s., Traubova 6, 602 00, Brno, Czech Republic.
authors.forename: Radka
authors.initials: R
authors.lastname: Pešoutová
authors.affiliation: AQUA PROCON s.r.o., Palackého tř. 12, 612 00, Brno, Czech Republic E-mail: radka.pesoutova@aquaprocon.cz; Faculty of Civil Engineering, Brno University of Technology, Veveří 331/95, 602 00, Brno, Czech Republic.
authors.forename: Petr
authors.initials: P
authors.lastname: Hlavínek
mesh_terms: D001419:Bacteria / Q000254:growth & development*; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D007220:Industrial Waste; D058086:Microalgae / Q000254:growth & development*; D009584:Nitrogen / Q000032:analysis / Q000302:isolation & purification / Q000378:metabolism; D010758:Phosphorus / Q000032:analysis / Q000302:isolation & purification / Q000378:metabolism; D014865:Waste Disposal, Fluid / Q000295:instrumentation / Q000379:methods*; D062065:Wastewater
chemical_list: D007220:Industrial Waste; D009584:Nitrogen; D010758:Phosphorus; D062065:Wastewater