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Chemical and Biological Processes for Nutrients Removal and Recovery
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Author(s): Dafne Crutchik Pedemonte (University of Verona, Italy), Nicola Frison (University of Verona, Italy), Carlota Tayà (University of Vic-Central University of Catalonia, Spain), Sergio Ponsa (University of Vic-Central University of Catalonia, Spain)and Francesco Fatone (University of Verona, Italy)
Copyright: 2017
Pages: 36
Source title:
Technologies for the Treatment and Recovery of Nutrients from Industrial Wastewater
Source Author(s)/Editor(s): Ángeles Val del Río (University of Santiago de Compostela, Spain), José Luis Campos Gómez (University Adolfo Ibáñez, Chile)and Anuska Mosquera Corral (University of Santiago de Compostela, Spain)
DOI: 10.4018/978-1-5225-1037-6.ch004
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Abstract
This chapter gives an overview on the main technologies for nutrient removal from industrial wastewater by focusing on principles and operational parameters of real applications. A plethora of technologies can achieve the nutrients removal from wastewater depending mainly on their concentration and forms; however, biological nitrification and denitrification and chemical precipitation are the most common processes used today to remove nitrogen and phosphorus, respectively. Stripping, adsorption and membrane based processes for nutrients recovery can be economically viable only when nitrogen concentration is higher than 1.5-2 gN/L. On the other hand, phosphorus recovery should always be pursued and struvite crystalization is the most common option that should be evaluated together with biological phosphorus accumulation in sludge or plants for the following post-processing and valorization.
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