Domestic Sewage Treatment with a Successive System of Activated Sludge Process and Phytoplankton Cultivation

  • Hong, W.H. (KAIS) ;
  • Pack, M.Y. (KAIS)
  • Published : 1978.10.01

Abstract

Treatment of domestic sewage discharged from big cafeteria kitchen, especially rice-washing water, was examined by the use of activated sludge process and phytoplankton cultivation. Only with a activated sludge process COD value decreased from around 1000 mg/ι to 100 mg/ι, but nutrients, such as nitrogen and phosphate could not be removed sufficiently phytoplankton cultivation in combination with a activate sludge process could decrease COD value down to 50 mg/ι and nutrients values were also reduced substantially. However, the initial concentration of 20 mg/ι in the rice-washing water could not be removed completely without addition of activated sludge as a nitrogen source.

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