Start-up and performance of a downflow fluidised bed reactor for biological treatment of yellow wastewater and nutrient recovery
The treatment of yellow water (human urine) in a downflow fluidised bed reactor (DFFBR) was investigated to evaluate biological ureolysis and nutrient recovery. The reactor was operated at 30±4 °C in batch mode, and reaction time = 1 d. The average immobilised biomass (as volatile solids, IVS) in th...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2022-06-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/85/11/3208 |
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| author | Belem Espinosa-Chávez Florina Ramírez-Vives Grietje Zeeman Oscar Monroy-Hermosillo |
| author_facet | Belem Espinosa-Chávez Florina Ramírez-Vives Grietje Zeeman Oscar Monroy-Hermosillo |
| author_sort | Belem Espinosa-Chávez |
| collection | DOAJ |
| description | The treatment of yellow water (human urine) in a downflow fluidised bed reactor (DFFBR) was investigated to evaluate biological ureolysis and nutrient recovery. The reactor was operated at 30±4 °C in batch mode, and reaction time = 1 d. The average immobilised biomass (as volatile solids, IVS) in the reactor was 2.5±0.9 g L−1support, and specific ureolytic activity was 121 g Urea-N g−1 IVS d−1. The kinetic parameters were 0.152 mol L−1 (Km) and 8 mol g−1 IVS d−1 (Vmax). The ureolysis efficiency was 93.4% and chemical oxygen demand removal efficiency was 31.2%, while total ammonium nitrogen (NH4+-N) production rate was 7 g L−1 d−1 and phosphate removal reached 26%. Precipitates recovery during biological treatment was 1.72±0.8 g. These results suggest that the treatment of yellow water in a DFFBR is a viable option for partial recovery of N and P. HIGHLIGHTS
A new biological treatment of yellow water is proposed.;
Yellow waters were treated effectively in a downflow fluidised bed reactor.;
The biological ureolysis of human urine was reached within six hours.;
After addition of Mg2+/PO43− (1.6/1), 82.3 g of precipitates were recovered.;
Struvite was the major component of the recovered precipitates.; |
| first_indexed | 2024-04-11T22:15:36Z |
| format | Article |
| id | doaj.art-a7f24542371c49f69977a70bcdabb4cf |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-04-11T22:15:36Z |
| publishDate | 2022-06-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-a7f24542371c49f69977a70bcdabb4cf2022-12-22T04:00:26ZengIWA PublishingWater Science and Technology0273-12231996-97322022-06-0185113208322410.2166/wst.2022.167167Start-up and performance of a downflow fluidised bed reactor for biological treatment of yellow wastewater and nutrient recoveryBelem Espinosa-Chávez0Florina Ramírez-Vives1Grietje Zeeman2Oscar Monroy-Hermosillo3 Institute of Ecology, Universidad del Mar, Ciudad Universitaria, 70902 Puerto Ángel, Oaxaca, México Department of Biotechnology, Universidad Autónoma Metropolitana, Av. San Rafael Atlixco. 186. Col. Vicentina, 09340 Iztapalapa, México City, México Churchillweg 66, 6706 AD Wageningen, The Netherlands Department of Biotechnology, Universidad Autónoma Metropolitana, Av. San Rafael Atlixco. 186. Col. Vicentina, 09340 Iztapalapa, México City, México The treatment of yellow water (human urine) in a downflow fluidised bed reactor (DFFBR) was investigated to evaluate biological ureolysis and nutrient recovery. The reactor was operated at 30±4 °C in batch mode, and reaction time = 1 d. The average immobilised biomass (as volatile solids, IVS) in the reactor was 2.5±0.9 g L−1support, and specific ureolytic activity was 121 g Urea-N g−1 IVS d−1. The kinetic parameters were 0.152 mol L−1 (Km) and 8 mol g−1 IVS d−1 (Vmax). The ureolysis efficiency was 93.4% and chemical oxygen demand removal efficiency was 31.2%, while total ammonium nitrogen (NH4+-N) production rate was 7 g L−1 d−1 and phosphate removal reached 26%. Precipitates recovery during biological treatment was 1.72±0.8 g. These results suggest that the treatment of yellow water in a DFFBR is a viable option for partial recovery of N and P. HIGHLIGHTS A new biological treatment of yellow water is proposed.; Yellow waters were treated effectively in a downflow fluidised bed reactor.; The biological ureolysis of human urine was reached within six hours.; After addition of Mg2+/PO43− (1.6/1), 82.3 g of precipitates were recovered.; Struvite was the major component of the recovered precipitates.;http://wst.iwaponline.com/content/85/11/3208downflow fluidised bed reactorkinetic parametersstruviteureolysisyellow water |
| spellingShingle | Belem Espinosa-Chávez Florina Ramírez-Vives Grietje Zeeman Oscar Monroy-Hermosillo Start-up and performance of a downflow fluidised bed reactor for biological treatment of yellow wastewater and nutrient recovery Water Science and Technology downflow fluidised bed reactor kinetic parameters struvite ureolysis yellow water |
| title | Start-up and performance of a downflow fluidised bed reactor for biological treatment of yellow wastewater and nutrient recovery |
| title_full | Start-up and performance of a downflow fluidised bed reactor for biological treatment of yellow wastewater and nutrient recovery |
| title_fullStr | Start-up and performance of a downflow fluidised bed reactor for biological treatment of yellow wastewater and nutrient recovery |
| title_full_unstemmed | Start-up and performance of a downflow fluidised bed reactor for biological treatment of yellow wastewater and nutrient recovery |
| title_short | Start-up and performance of a downflow fluidised bed reactor for biological treatment of yellow wastewater and nutrient recovery |
| title_sort | start up and performance of a downflow fluidised bed reactor for biological treatment of yellow wastewater and nutrient recovery |
| topic | downflow fluidised bed reactor kinetic parameters struvite ureolysis yellow water |
| url | http://wst.iwaponline.com/content/85/11/3208 |
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