In the present paper a preliminary study on a chemical-biological treatment of alkaline industrial waste coming from the caprolactame production has been reported. The waste is polluted by cyclohexanecarboxysulphonate sodiumsalt 80 to 120 g/L with ii COD up to 350,000 mg/L. The proposed flowsheet of the waste treatment is constituted by a chemical pre-treatment (CaCl2 inacid condition) followed by a biological process. The experimental results have shown that it is possible to reduce the COD of about 20-30% in the chemical pre-treatment and 40% in the biological process with a dilution factor of 1/10. Further study are in progress to improve the COD degradation introducing further chemical steps.

Development of a chemical and biological treatment of alkaline industrial waste waters: a preliminary study

CHIARINI, MARCO;
1998

Abstract

In the present paper a preliminary study on a chemical-biological treatment of alkaline industrial waste coming from the caprolactame production has been reported. The waste is polluted by cyclohexanecarboxysulphonate sodiumsalt 80 to 120 g/L with ii COD up to 350,000 mg/L. The proposed flowsheet of the waste treatment is constituted by a chemical pre-treatment (CaCl2 inacid condition) followed by a biological process. The experimental results have shown that it is possible to reduce the COD of about 20-30% in the chemical pre-treatment and 40% in the biological process with a dilution factor of 1/10. Further study are in progress to improve the COD degradation introducing further chemical steps.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11575/6603
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