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Cheese whey wastewater: Characterization and treatment

Carvalho, Fátima ; Prazeres, Ana R. ; Rivas, Javier

The Science of the total environment, 2013-02, Vol.445-446, p.385-396 [Periódico revisado por pares]

Netherlands: Elsevier B.V

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  • Título:
    Cheese whey wastewater: Characterization and treatment
  • Autor: Carvalho, Fátima ; Prazeres, Ana R. ; Rivas, Javier
  • Assuntos: Animals ; Biodegradation, Environmental ; Biological treatment ; Cheese ; Cheese whey wastewater ; Dairy effluent characterization ; Dairying - methods ; Milk - chemistry ; Oxidation-Reduction ; Physicochemical treatment ; Sewage - chemistry ; Waste Water - chemistry ; Water Purification - methods ; Wetlands
  • É parte de: The Science of the total environment, 2013-02, Vol.445-446, p.385-396
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: Cheese whey wastewater (CWW) is a strong organic and saline effluent whose characterization and treatment have not been sufficiently addressed. CWW composition is highly variable due to raw milk used, the fraction of non valorized cheese whey and the amount of cleaning water used. Cheese whey wastewater generation is roughly four times the volume of processed milk. This research tries to conduct an exhaustive compilation of CWW characterization and a comparative study between the different features of CWW, cheese whey (CW), second cheese whey (SCW) and dairy industry effluents. Different CWW existing treatments have also been critically analyzed. The advantages and drawbacks in aerobic/anaerobic processes have been evaluated. The benefits of physicochemical pre-stages (i.e. precipitation, coagulation–flocculation) in biological aerobic systems are assessed. Pre-treatments based on coagulation or basic precipitation might allow the application of aerobic biodegradation treatments with no dilution requirements. Chemical precipitation with lime or NaOH produces a clean wastewater and a sludge rich in organic matter, N and P. Their use in agriculture may lead to the implementation of Zero discharge systems. [Display omitted] ► This research presents an exhaustive characterization of cheese and other dairy effluents. ► We focus our attention on cheese whey wastewater as a strong biodegradable saline effluent. ► We report on the biological and physicochemical treatments of cheese whey wastewater. ► We show that a pre-treatment with chemical precipitation is a viable solution for these effluents. ► The implementation of zero discharge systems is possible for agricultural reuse.
  • Editor: Netherlands: Elsevier B.V
  • Idioma: Inglês
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