The effect of varying LED light sources and influent carbon/nitrogen ratios on treatment of synthetic sanitary sewage using Chlorella vulgaris

This study showed that red light is the optimum light wavelength for growing microalgae Chlorella vulgaris in microalgae biological wastewater treatment systems, given a harvest time of 144 h

Bing Xu; Pu Cheng; Cheng Yan; Haiyan Pei; Wenrong Hu

2013

Scholarcy highlights

  • Sanitary sewage can create serious environmental problems if discharged directly into natural waters without appropriate treatment
  • This study showed that red light is the optimum light wavelength for growing microalgae Chlorella vulgaris in microalgae biological wastewater treatment systems, given a harvest time of 144 h
  • Nutrient removal efficiency was significantly affected by light wavelength, light intensity, the interaction of these two factors, and the interaction among light wavelength, light intensity, and influent carbon/nitrogen ratios
  • The optimal influent C/N ratio was determined to be 6:1

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