Reutilización de aguas residuales urbanas, regeneradas mediante lagunaje profundo, en riego de praderas forrajeras

• Autores: M. Arauzo Sánchez, M. Fco. Colmenarejo Morcillo, Ángel Bustos Aragón, P. Hernaiz-Algarra, E. Martínez Alvarez
• Localización: Residuos: Revista técnica, ISSN 1131-9526, Año nº 8, Nº 42, 1998, págs. 50-54
• Idioma: español
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• Resumen

  • The reuse of regenerated urban wastewater in agriculture irrigation is a practice that is having an increasing leading role in Mediterranean Countries. It is, therefore, fundamental to safeguard the chemical and sanitary qualities of the regenerated wastewater by regeneration technologies improvement, as well as storing regulation flow systems. The Research Group has started up a deep wastewater stabilization pond and a nearby experimental agricultural system, to study the reuse of regenerated wastewater in agriculture irrigation. The deep stabilization pond, 4.75m deep and 216lm3 volume, is supplied -continuously- with urban wastewater from the secondary effluent of a conventional purifying plant. Hydraulic retention time is about 9 days. The experimental agricultural system consists of 6 plots (12 .5x8m each) sown with Festuca arundianacea Schreber, next to the deep stabilization pond. Plots were surface flooding irrigated from spring to autumn, and crop was cut 2 times, in July and October. Two treatments have been established: the first, irrigation with the deep stabilization pond effluent, and the second, irrigation with water from the Jarama river (which is normally used by farmers nearby the experimental area). Our intention is to compare both treatments in order to verify the suitability of wastewater reuse, stabilised and stored in a deep pond, in surface flooding irrigation of pastures.