Using Dewatered Sludge From a Drinking Water Treatment Plant for Phosphorus Removal in Constructed Wetlands

Abstract

This study evaluates the applicability of drinking water sludge as an active substrate in vertical subsurface flow constructed wetlands (VFCW) for advanced wastewater treatment. This treatment enables the achievement of greater phosphorus removals, as well as other pollutants, reaching concentrations below the required limits and obtaining suitable water for different uses, particularly environmental ones. To this end, two prototypes, one of them operating intermittently and another one with continuous flow, have been installed at Quart-Benàger urban wastewater treatment plant (WWTP), facility property of Entidad Pública de Saneamiento de Aguas Residuales (EPSAR) of the Valencian region. Preliminary results indicate that the reuse of the drinking water sludge as an active substrate in VFCW improves the quality of WWTP effluents, minimizing their impact on the receiving aquatic environments.

Utilisation of Waste Sludge from Drinking Water Treatment as a Filler Material in Hot Mix Asphalt

“…Its efficiency as an affordable adsorbent is engaged in immobilizing diverse pollutants and contributing to pollution control efforts. Nuria et al [32] indicate that in the domain of wastewater treatment, DWTS serves as an active substrate within vertical subsurface flow-constructed wetlands (VFCW), constituting a powerful tool for advanced wastewater treatment. El Eneina et al [33] expressed, based on the results in their article, that its ability to adsorb heavy metals, and thus, to act as an efficient agent for environmental remediation, is especially noteworthy.…”