E2.08 Wiprachtiger 2017 ReNUWIt Annual Meeting Poster

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Abstract/Contents

Abstract: Urine only contributes 1% to the total waste water stream but contains 80% of the nitrogen (N), 55% of the phosphorus (P) and 60% of the potassium (K) present in wastewater.1 By treating a very small amount of the wastewater stream the majority of the nutrients can potentially be removed. Removing N before it enters conventional wastewater treatment plants (WWTP) has benefits in regard to energy demand reduction, cost reduction and minimization in terms of pollution for receiving waters. The main motivation to recover P is that the life essential nutrient is a limited resource and today most of the consumed P simply ends up in receiving waters or soils.2 In addition to previous ReNUWIt research in terms of N recovery via cation exchange (CEX) or electrochemical stripping, the effect of prior P recovery in the form of struvite precipitation or via anion exchange as well as the simultaneous recovery of P and N in a mixed-bed reactor were investigated. We also investigated the kinetics of the urea hydrolysis process, which is a prerequisite for the N recovery via cation exchange.

Type of resource	other
Date created	May 2017

Subject	Re-inventing the Nation’s Urban Water Infrastructure
Subject	ReNUWIt
Subject	E2.08
Subject	Efficient Engineered Systems
Subject	Energy and resource recovery
Subject	California
Subject	ammonium
Subject	clinoptilolite
Subject	contaminants
Subject	fertilizer
Subject	nitrogen
Subject	pharmaceuticals
Subject	phosphate
Subject	removal
Subject	source separated urine
Subject	wastewater

Related Publication	Tarpeh, W. A., Wald, I., Wiprachtiger, M., and Nelson, K. L. (2018). Effects of operating and design parameters on ion exchange columns for nutrient recovery from urine. Environmental Science-Water Research & Technology, 4(6), 828-838. http://doi.org/10.1039/c7ew00478h
Location	https://purl.stanford.edu/pj520dp3696

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Preferred Citation: Wiprächtiger, M., Tarpeh, W. A., Wald, I., and Nelson, K. L. (2017). E2.08 Wiprachtiger 2017 ReNUWIt Annual Meeting Poster. Stanford Digital Repository. Available at: https://purl.stanford.edu/pj520dp3696

Re-inventing the Nation's Urban Water Infrastructure (ReNUWIt)

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