Application of hybrid electrocoagulation–filtration methods in the pretreatment of marine aquaculture wastewater

The aim of this study was to provide technical means and data support for enhancing the filtration pretreatment capacity of a recirculating aquaculture system. A continuous flow electrocoagulation (EC)–filtration system was designed and its application in the pretreatment of marine aquaculture waste...

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Autores principales:	Jianping Xu, Yishuai Du, Tianlong Qiu, Li Zhou, Ye Li, Fudi Chen, Jianming Sun
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	anode combination mode ec–filtration system energy consumption recirculating aquaculture system water treatment Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/ed242d7e9f6346b3a1132fdbf7c2c0b4
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spelling	oai:doaj.org-article:ed242d7e9f6346b3a1132fdbf7c2c0b42021-11-06T10:52:22ZApplication of hybrid electrocoagulation–filtration methods in the pretreatment of marine aquaculture wastewater0273-12231996-973210.2166/wst.2021.044https://doaj.org/article/ed242d7e9f6346b3a1132fdbf7c2c0b42021-03-01T00:00:00Zhttp://wst.iwaponline.com/content/83/6/1315https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732The aim of this study was to provide technical means and data support for enhancing the filtration pretreatment capacity of a recirculating aquaculture system. A continuous flow electrocoagulation (EC)–filtration system was designed and its application in the pretreatment of marine aquaculture wastewater was studied. The influences of anode combination modes, hydraulic retention times (HRTs) of the EC reactor and filter pore sizes on the water treatment capacity were investigated. Results showed that EC could significantly enhance the treatment efficiency of the filtration equipment used in subsequent steps. Al-Fe electrodes used as anode led to better processing capacity of this system, and the optimum anode was 3Al + Fe. With the increase of HRT and decrease of filter pore size, the enhanced effect of the EC process on the filter was more obvious. When the current density was 19.22 A/m2, the anode was 3Al + Fe, the HRT was 4.5 min and the filter pore size was 45 μm, the removal efficiency of the system for Vibrio, chemical oxygen demand, total ammonia nitrogen, nitrite nitrogen (NO2−-N), nitrate nitrogen (NO3−-N) and total nitrogen was 69.55 ± 0.93%, 48.99 ± 1.42%, 57.06 ± 1.28%, 34.09 ± 2.27%, 18.47 ± 1.88% and 55.26 ± 1.42%, respectively, and the energy consumption was (26.25 ± 4.95) × 10−3kWh/m3. HIGHLIGHTS The combination technology of EC and filtration was used for the pretreatment of aquaculture wastewater.; The filtration capacity of physical filtration equipment was improved through the EC–flocculation.; Al-Fe combined anode was used to improve the treatment capacity of the EC–filtration system.;Jianping XuYishuai DuTianlong QiuLi ZhouYe LiFudi ChenJianming SunIWA Publishingarticleanode combination modeec–filtration systemenergy consumptionrecirculating aquaculture systemwater treatmentEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 6, Pp 1315-1326 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	anode combination mode ec–filtration system energy consumption recirculating aquaculture system water treatment Environmental technology. Sanitary engineering TD1-1066
spellingShingle	anode combination mode ec–filtration system energy consumption recirculating aquaculture system water treatment Environmental technology. Sanitary engineering TD1-1066 Jianping Xu Yishuai Du Tianlong Qiu Li Zhou Ye Li Fudi Chen Jianming Sun Application of hybrid electrocoagulation–filtration methods in the pretreatment of marine aquaculture wastewater
description	The aim of this study was to provide technical means and data support for enhancing the filtration pretreatment capacity of a recirculating aquaculture system. A continuous flow electrocoagulation (EC)–filtration system was designed and its application in the pretreatment of marine aquaculture wastewater was studied. The influences of anode combination modes, hydraulic retention times (HRTs) of the EC reactor and filter pore sizes on the water treatment capacity were investigated. Results showed that EC could significantly enhance the treatment efficiency of the filtration equipment used in subsequent steps. Al-Fe electrodes used as anode led to better processing capacity of this system, and the optimum anode was 3Al + Fe. With the increase of HRT and decrease of filter pore size, the enhanced effect of the EC process on the filter was more obvious. When the current density was 19.22 A/m2, the anode was 3Al + Fe, the HRT was 4.5 min and the filter pore size was 45 μm, the removal efficiency of the system for Vibrio, chemical oxygen demand, total ammonia nitrogen, nitrite nitrogen (NO2−-N), nitrate nitrogen (NO3−-N) and total nitrogen was 69.55 ± 0.93%, 48.99 ± 1.42%, 57.06 ± 1.28%, 34.09 ± 2.27%, 18.47 ± 1.88% and 55.26 ± 1.42%, respectively, and the energy consumption was (26.25 ± 4.95) × 10−3kWh/m3. HIGHLIGHTS The combination technology of EC and filtration was used for the pretreatment of aquaculture wastewater.; The filtration capacity of physical filtration equipment was improved through the EC–flocculation.; Al-Fe combined anode was used to improve the treatment capacity of the EC–filtration system.;
format	article
author	Jianping Xu Yishuai Du Tianlong Qiu Li Zhou Ye Li Fudi Chen Jianming Sun
author_facet	Jianping Xu Yishuai Du Tianlong Qiu Li Zhou Ye Li Fudi Chen Jianming Sun
author_sort	Jianping Xu
title	Application of hybrid electrocoagulation–filtration methods in the pretreatment of marine aquaculture wastewater
title_short	Application of hybrid electrocoagulation–filtration methods in the pretreatment of marine aquaculture wastewater
title_full	Application of hybrid electrocoagulation–filtration methods in the pretreatment of marine aquaculture wastewater
title_fullStr	Application of hybrid electrocoagulation–filtration methods in the pretreatment of marine aquaculture wastewater
title_full_unstemmed	Application of hybrid electrocoagulation–filtration methods in the pretreatment of marine aquaculture wastewater
title_sort	application of hybrid electrocoagulation–filtration methods in the pretreatment of marine aquaculture wastewater
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/ed242d7e9f6346b3a1132fdbf7c2c0b4
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Application of hybrid electrocoagulation–filtration methods in the pretreatment of marine aquaculture wastewater

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