ADVANCED TREATMENT BY CHEMICAL OXIDATION OF PULP AND PAPER EFFLUENT FROM A PLANT MANUFACTURING HARDBOARD FROM WASTE PAPER


Tunay O. , ERDEML E., Kabdasli I. , OELMEZ T.

ENVIRONMENTAL TECHNOLOGY, vol.29, no.10, pp.1045-1051, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 29 Issue: 10
  • Publication Date: 2008
  • Doi Number: 10.1080/09593330802175823
  • Title of Journal : ENVIRONMENTAL TECHNOLOGY
  • Page Numbers: pp.1045-1051

Abstract

This study attempts to evaluate the applicability of chemical oxidation processes to polish biologically treated effluent of a plant manufacturing hardboard from waste paper to comply with the discharge limit of 120 mg l(-1) chemical oxygen demand (COD). In the first step, a chemically assisted settling was applied. The optimum results were obtained with alum plus lime with the alum dose of 200 mg l(-1). h; the second step, chemically assisted settling effluent was fed into all activated sludge system and over 80% COD removal was achieved. in the last step of the experimental study, a series of ozone oxidation and Fenton oxidation methods were tested to remove residual COD. Ozone oxidation provided 80% COD removal. An ozone dose of 40 mg min(-1) with a reaction time of two hours was found to be optimum. Catalytic ozonation by using ferric iron, as well as high pH ozonation, Fenton process and H(2)O(2)/O(3) oxidation did not prove to be more efficient than plain ozonation under these study conditions.