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Abstract
This paper presents a state-of-the-art review of natural wastewater treatment technologies selected from the point of view of sustainability and relates them to feasible reuse and disposal practices available for food processing wastewater. Selected technologies include land application, constructed wetlands, and various pond systems that all make use of natural processes. The aim of the review is to help understand issues controlling wastewater reuse and how the different natural treatment systems and their combinations could help us to protect the environment, meet regulations, and conserve water, material, and energy resources.