Dissolved air flotation clarification of activated sludge and wastewaters from chemical industry.

@article{Jokelat2003DissolvedAF,
  title={Dissolved air flotation clarification of activated sludge and wastewaters from chemical industry.},
  author={P Jokelat and Jarkko. Immonen},
  journal={Water science and technology : a journal of the International Association on Water Pollution Research},
  year={2003},
  volume={47 1},
  pages={205-10}
}
Wastewaters from separate chemical factories are treated together in an extended aeration activated sludge plant. The factories produce chemicals for paper industry (e.g. starch), latexes and animal feed. The components of the wastewaters include styrene, tertiary butanol and vinyl acetate. Activated sludge is clarified by sedimentation. During winter time, when the water temperature was 3-12 degrees C, the clarification deteriorated causing carry over of suspended solids containing COD… CONTINUE READING