RT Journal Article T1 Superposición de acuíferos y contaminación por alpechín en la depresión del Guadalquivir T1 Superposition of aquifers and ground water pollution by wastewater from an olive-oil extraction p la nt in the Guadalquivir river basin A1 Pulido Bosch, Antonio A1 Ben Sbih, Y. AB The leakage from waste water from olive-oil extraction plant (alpechín) stored in several pools polluted the phreatic aquifer; after making impermeable the pools the pollution was reduced by aireation, biological activities and neutralization by miocene marl terrains, in this area there are two more confined aquifers of which waters present some physico-chemical anomalies, related with deep flow waters PB Sociedad Geológica de España YR 1994 FD 1994 LK http://hdl.handle.net/10272/13799 UL http://hdl.handle.net/10272/13799 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 1 jun 2026