Malt house wastewater treatment with settleable algal-bacterial flocs
Language English Country England, Great Britain Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
26540541
DOI
10.2166/wst.2015.405
Knihovny.cz E-resources
- MeSH
- Bacteria growth & development MeSH
- Biomass MeSH
- Nitrogen analysis isolation & purification metabolism MeSH
- Phosphorus analysis isolation & purification metabolism MeSH
- Biological Oxygen Demand Analysis MeSH
- Microalgae growth & development MeSH
- Waste Disposal, Fluid instrumentation methods MeSH
- Wastewater MeSH
- Industrial Waste MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Nitrogen MeSH
- Phosphorus MeSH
- Waste Water MeSH
- Industrial Waste MeSH
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.
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