Integrated constructed wetlands treating industrial wastewater from seed production

The performance of an integrated wastewater treatment system composed of a horizontal subsurface flow constructed wetland (HSSFCW), floating constructed wetland (FCW), and anaerobic baffled reactor (ABR) was studied for pollutant removal from seed production wastewater. Cyperus alternifolius (Umbrel...

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Autores principales: Elizabeth Kiflay, Juma Selemani, Karoli Njau
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Lenguaje:EN
Publicado: IWA Publishing 2021
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spelling oai:doaj.org-article:8beaa8bc0b8d45c487d38ce433a9dc412021-11-05T21:09:05ZIntegrated constructed wetlands treating industrial wastewater from seed production1751-231X10.2166/wpt.2021.008https://doaj.org/article/8beaa8bc0b8d45c487d38ce433a9dc412021-04-01T00:00:00Zhttp://wpt.iwaponline.com/content/16/2/504https://doaj.org/toc/1751-231XThe performance of an integrated wastewater treatment system composed of a horizontal subsurface flow constructed wetland (HSSFCW), floating constructed wetland (FCW), and anaerobic baffled reactor (ABR) was studied for pollutant removal from seed production wastewater. Cyperus alternifolius (Umbrella Papyrus) plants were used in the HSSFCW, and Vetiveria zizanioides (Vetiver grass) in the FCW. The ABR was fed with 25 /d wastewater from its equalization tank. The average raw wastewater organic loading rate was 0.208 kg-COD/d. Grab wastewater samples were collected twice weekly for three months from each unit's inlet and outlet. The system's performance in removing biochemical oxygen demand (), chemical oxygen demand (COD), total suspended solids (TSS), turbidity, nitrate, phosphate, and ammonium was studied. The average removal efficiencies obtained were 95.5% , 94.6% COD, 86.2% TSS, 76.6% turbidity, 82.4% nitrate, 76% phosphate, and 32.9% ammonium. The results show that integrating ABR, HSSFCW, and FCW improves pollutant removal from seed production wastewater, and the treated water can be used for agricultural purposes. Highlights The performance of wastewater treatment system in treating seed production wastewater was studied.; The system integrated anaerobic baffled reactor, horizontal subsurface flow and floating constructed wetlands.; The system removed COD, BOD5, TSS, turbidity below acceptable limit of Tanzanian national standard for industrial effluent.; The integrated system is promising for pollutant removal from seed production wastewater.;Elizabeth KiflayJuma SelemaniKaroli NjauIWA Publishingarticleanaerobic baffled reactorfloating constructed wetlandhorizontal subsurface flow constructed wetlandperformance evaluationseed production wastewaterwastewater treatmentEnvironmental technology. Sanitary engineeringTD1-1066ENWater Practice and Technology, Vol 16, Iss 2, Pp 504-515 (2021)
institution DOAJ
collection DOAJ
language EN
topic anaerobic baffled reactor
floating constructed wetland
horizontal subsurface flow constructed wetland
performance evaluation
seed production wastewater
wastewater treatment
Environmental technology. Sanitary engineering
TD1-1066
spellingShingle anaerobic baffled reactor
floating constructed wetland
horizontal subsurface flow constructed wetland
performance evaluation
seed production wastewater
wastewater treatment
Environmental technology. Sanitary engineering
TD1-1066
Elizabeth Kiflay
Juma Selemani
Karoli Njau
Integrated constructed wetlands treating industrial wastewater from seed production
description The performance of an integrated wastewater treatment system composed of a horizontal subsurface flow constructed wetland (HSSFCW), floating constructed wetland (FCW), and anaerobic baffled reactor (ABR) was studied for pollutant removal from seed production wastewater. Cyperus alternifolius (Umbrella Papyrus) plants were used in the HSSFCW, and Vetiveria zizanioides (Vetiver grass) in the FCW. The ABR was fed with 25 /d wastewater from its equalization tank. The average raw wastewater organic loading rate was 0.208 kg-COD/d. Grab wastewater samples were collected twice weekly for three months from each unit's inlet and outlet. The system's performance in removing biochemical oxygen demand (), chemical oxygen demand (COD), total suspended solids (TSS), turbidity, nitrate, phosphate, and ammonium was studied. The average removal efficiencies obtained were 95.5% , 94.6% COD, 86.2% TSS, 76.6% turbidity, 82.4% nitrate, 76% phosphate, and 32.9% ammonium. The results show that integrating ABR, HSSFCW, and FCW improves pollutant removal from seed production wastewater, and the treated water can be used for agricultural purposes. Highlights The performance of wastewater treatment system in treating seed production wastewater was studied.; The system integrated anaerobic baffled reactor, horizontal subsurface flow and floating constructed wetlands.; The system removed COD, BOD5, TSS, turbidity below acceptable limit of Tanzanian national standard for industrial effluent.; The integrated system is promising for pollutant removal from seed production wastewater.;
format article
author Elizabeth Kiflay
Juma Selemani
Karoli Njau
author_facet Elizabeth Kiflay
Juma Selemani
Karoli Njau
author_sort Elizabeth Kiflay
title Integrated constructed wetlands treating industrial wastewater from seed production
title_short Integrated constructed wetlands treating industrial wastewater from seed production
title_full Integrated constructed wetlands treating industrial wastewater from seed production
title_fullStr Integrated constructed wetlands treating industrial wastewater from seed production
title_full_unstemmed Integrated constructed wetlands treating industrial wastewater from seed production
title_sort integrated constructed wetlands treating industrial wastewater from seed production
publisher IWA Publishing
publishDate 2021
url https://doaj.org/article/8beaa8bc0b8d45c487d38ce433a9dc41
work_keys_str_mv AT elizabethkiflay integratedconstructedwetlandstreatingindustrialwastewaterfromseedproduction
AT jumaselemani integratedconstructedwetlandstreatingindustrialwastewaterfromseedproduction
AT karolinjau integratedconstructedwetlandstreatingindustrialwastewaterfromseedproduction
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