Simultaneous Recovery of Struvite and Irrigation Water for Agricultural Purposes Obtained from Dewatering Liquor through Electrodialysis

Wastewater contains resources, which can be recovered for secondary use if treated properly. Besides research in zero liquid discharge solutions, the aim of the study was a simultaneous recovery of products from a wastewater treatment plant’s dewatering liquor. To be specific, we investigated a simu...

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Autores principales:	Petra Malíková, Katrin Calábková, Silvie Heviánková, Jan Halfar, Iva Kotalová, Barbora Valová
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	dewatering liquor wastewater treatment plant (WWTP) struvite irrigation water electrodialysis zero liquid discharge (ZLD) Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/b19927d9e619466783825b7031dae642
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spelling	oai:doaj.org-article:b19927d9e619466783825b7031dae6422021-11-25T19:16:21ZSimultaneous Recovery of Struvite and Irrigation Water for Agricultural Purposes Obtained from Dewatering Liquor through Electrodialysis10.3390/w132232802073-4441https://doaj.org/article/b19927d9e619466783825b7031dae6422021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/22/3280https://doaj.org/toc/2073-4441Wastewater contains resources, which can be recovered for secondary use if treated properly. Besides research in zero liquid discharge solutions, the aim of the study was a simultaneous recovery of products from a wastewater treatment plant’s dewatering liquor. To be specific, we investigated a simultaneous recovery of struvite and irrigation water using electrodialysis (ED) in laboratory experiments. Two products were obtained from ED—concentrate and diluate. The concentrate was precipitated to obtain struvite. On average, 11 g of wet precipitate (including 17.58% of dry solids) were obtained from 1 L of concentrate. Crystal phases were confirmed by powder X-ray diffraction (XRD), with showing 94–97% recovery of struvite, while the remaining 3–6% were identified as hazenite. The average yield of crystal struvite was 1.76 g. Both struvite and hazenite may further be used as a fertilizer. Next, we suggest using the second ED product, the diluate, as irrigation water if it meets the irrigation water requirements. Attention was paid to the concentrations of dissolved solids (DS) in diluate, which decreased by an average of 93% compared to the input values in the dewatering liquor. In line with the observed Czech or EU standards indicators, we can say that the diluate can be used in agriculture, namely as irrigation water (Category I—water suitable for irrigation).Petra MalíkováKatrin CalábkováSilvie HeviánkováJan HalfarIva KotalováBarbora ValováMDPI AGarticledewatering liquorwastewater treatment plant (WWTP)struviteirrigation waterelectrodialysiszero liquid discharge (ZLD)Hydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 3280, p 3280 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dewatering liquor wastewater treatment plant (WWTP) struvite irrigation water electrodialysis zero liquid discharge (ZLD) Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	dewatering liquor wastewater treatment plant (WWTP) struvite irrigation water electrodialysis zero liquid discharge (ZLD) Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Petra Malíková Katrin Calábková Silvie Heviánková Jan Halfar Iva Kotalová Barbora Valová Simultaneous Recovery of Struvite and Irrigation Water for Agricultural Purposes Obtained from Dewatering Liquor through Electrodialysis
description	Wastewater contains resources, which can be recovered for secondary use if treated properly. Besides research in zero liquid discharge solutions, the aim of the study was a simultaneous recovery of products from a wastewater treatment plant’s dewatering liquor. To be specific, we investigated a simultaneous recovery of struvite and irrigation water using electrodialysis (ED) in laboratory experiments. Two products were obtained from ED—concentrate and diluate. The concentrate was precipitated to obtain struvite. On average, 11 g of wet precipitate (including 17.58% of dry solids) were obtained from 1 L of concentrate. Crystal phases were confirmed by powder X-ray diffraction (XRD), with showing 94–97% recovery of struvite, while the remaining 3–6% were identified as hazenite. The average yield of crystal struvite was 1.76 g. Both struvite and hazenite may further be used as a fertilizer. Next, we suggest using the second ED product, the diluate, as irrigation water if it meets the irrigation water requirements. Attention was paid to the concentrations of dissolved solids (DS) in diluate, which decreased by an average of 93% compared to the input values in the dewatering liquor. In line with the observed Czech or EU standards indicators, we can say that the diluate can be used in agriculture, namely as irrigation water (Category I—water suitable for irrigation).
format	article
author	Petra Malíková Katrin Calábková Silvie Heviánková Jan Halfar Iva Kotalová Barbora Valová
author_facet	Petra Malíková Katrin Calábková Silvie Heviánková Jan Halfar Iva Kotalová Barbora Valová
author_sort	Petra Malíková
title	Simultaneous Recovery of Struvite and Irrigation Water for Agricultural Purposes Obtained from Dewatering Liquor through Electrodialysis
title_short	Simultaneous Recovery of Struvite and Irrigation Water for Agricultural Purposes Obtained from Dewatering Liquor through Electrodialysis
title_full	Simultaneous Recovery of Struvite and Irrigation Water for Agricultural Purposes Obtained from Dewatering Liquor through Electrodialysis
title_fullStr	Simultaneous Recovery of Struvite and Irrigation Water for Agricultural Purposes Obtained from Dewatering Liquor through Electrodialysis
title_full_unstemmed	Simultaneous Recovery of Struvite and Irrigation Water for Agricultural Purposes Obtained from Dewatering Liquor through Electrodialysis
title_sort	simultaneous recovery of struvite and irrigation water for agricultural purposes obtained from dewatering liquor through electrodialysis
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b19927d9e619466783825b7031dae642
work_keys_str_mv	AT petramalikova simultaneousrecoveryofstruviteandirrigationwaterforagriculturalpurposesobtainedfromdewateringliquorthroughelectrodialysis AT katrincalabkova simultaneousrecoveryofstruviteandirrigationwaterforagriculturalpurposesobtainedfromdewateringliquorthroughelectrodialysis AT silvieheviankova simultaneousrecoveryofstruviteandirrigationwaterforagriculturalpurposesobtainedfromdewateringliquorthroughelectrodialysis AT janhalfar simultaneousrecoveryofstruviteandirrigationwaterforagriculturalpurposesobtainedfromdewateringliquorthroughelectrodialysis AT ivakotalova simultaneousrecoveryofstruviteandirrigationwaterforagriculturalpurposesobtainedfromdewateringliquorthroughelectrodialysis AT barboravalova simultaneousrecoveryofstruviteandirrigationwaterforagriculturalpurposesobtainedfromdewateringliquorthroughelectrodialysis
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Simultaneous Recovery of Struvite and Irrigation Water for Agricultural Purposes Obtained from Dewatering Liquor through Electrodialysis

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