Resumo

CARDENAS CALVACHI, Gloria Lucía  e  RAMOS RAMOS, Robert Mauricio. EVALUATION OF THE EFFECTIVENESS OF FIXED BED REACTORS USING WASTE WATER OF SUGAR CRAFT MILLS. Cienc. Ing. Neogranad. [online]. 2009, vol.19, n.1, pp.25-38. ISSN 0124-8170.

The problem of treatment and final disposal of waste water coming from artisan sugar mills in the Department of Nariño, particularly those established in the Municipality of Sandoná. It lies in its economical and technological impossibility, according to its nature. The system of Up Flow Anaerobic Filter (UFAF) as the principal unit of biological treatment on the degradation of sugars, it offers a good alternative because they are considered to be efficient treatments associated with low costs of construction, operation and maintenance, with the challenge of maintaining a suitable habitat conditions for the growth of the biomass inside the reactor. The study evaluated four contact means marine shell, synthetic material, vitrified material and river gravel, through laboratory-scale testing, to find the FAFA's most suitable material under controlled conditions of temperature, flow regime and previous conditioning of the bacterial environment. The marine shell and synthetic material provide characteristics of toughness, durability and easiness of obtaining and allowing an efficient removal of organic material above 80%. However, the marine shell reaches the highest removal (89.7% for COD and 87.8% for BOD) thanks its physical structure that provides an adequate microenvironment and its chemical composition, natural source of alkalinity and micronutrients to the system, which is considered the most suitable contact mean to design and to implement the UFAF in the artisan sugar mills.

Palavras-chave : artisan sugar mills; Up Flow Anaerobic Filter (UFAF); marine shell media; starting and stabilization of the reactor.

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