72
M. D. Alba-Rodríguez et al.
quality standards that are determined by the legislation in force that applies a degree of
protection in relation to subsequent uses and the ecological function of the receiving
channel where the discharge is located (Fig. 4, Eq. 4).
In the Spanish legislation, the Royal Decree 849/1986, regulates the management
and control of the public water domain and the hydrological planning, which determine the seriousness of the infringements in the matter of the public water domain,
and establishes the environmental quality standards in the field of the water policy.
Their limits are used for the present WFgrey calculations summarized in Table 1. The
data on natural pollution have been obtained from the reports of the SAICA Network
(Automatic System of Information of Water Quality) for the analysis of the degree
of compliance with the parameters analyzed on a continuous basis by the Automatic Analysis Station, with regard to the quality objectives that the Guadalquivir
Fig. 4 WF calculation equations of a production process
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