Evaluating the performance of fine bubble diffused aeration systems in cylindrical aeration tanks by fuzzy c-means algorithm

In order to make a comprehensive evaluation of the performance of fine bubble diffused aeration systems in cylindrical aeration tanks, the following parameters are considered: distribution of DO concentration in the horizontal direction of the different water depth of an aeration tank, distribution...

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Autores principales:	Er Li, Xiangying Zeng
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	do concentration uniformity fuzzy c-means (fcm) algorithm overall efficiency of oxygen mass transfer performance evaluation Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/9134d01e9ce7463fa8625ffdc432eea5
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spelling	oai:doaj.org-article:9134d01e9ce7463fa8625ffdc432eea52021-11-06T11:13:53ZEvaluating the performance of fine bubble diffused aeration systems in cylindrical aeration tanks by fuzzy c-means algorithm0273-12231996-973210.2166/wst.2021.232https://doaj.org/article/9134d01e9ce7463fa8625ffdc432eea52021-07-01T00:00:00Zhttp://wst.iwaponline.com/content/84/2/404https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732In order to make a comprehensive evaluation of the performance of fine bubble diffused aeration systems in cylindrical aeration tanks, the following parameters are considered: distribution of DO concentration in the horizontal direction of the different water depth of an aeration tank, distribution of DO concentration in the vertical direction of the aeration tank, distribution of DO concentration in all the points of the aeration tank and ratio of total mass increment of DO in the aeration tank to total mass of oxygen in aeration air. The aeration characteristic criterion (ACC) is proposed to synthesize these parameters, and weighted sums of the similarity degrees derived from the extensions of fuzzy c-means (FCM) are used to construct ACC. The results show that compared with total volumetric oxygen transfer coefficient () and specific standard oxygen transfer efficiency (), ACC is demonstrated to be more marked and sensitive for the performance evaluation of the fine bubble diffused aeration systems equipped with fine-pore aeration tubes. Moreover the performance of aeration systems equipped with different layouts of fine-pore aeration tubes is comparatively studied, and their performance from best to worst is ring-type diffuser > square-type diffuser > parallel-lines-type diffuser > cross-type diffuser. Highlights The performances of fine bubble diffused aeration systems in cylindrical aeration tanks are evaluated based on the FCM algorithm.; Comparison of the performance evaluation of aeration systems equipped with different layouts of fine-pore aeration tubes is made based on ACC.; The performance of aeration systems equipped with different layouts of fine-pore aeration tubes is comparatively studied based on ACC.;Er LiXiangying ZengIWA Publishingarticledo concentration uniformityfuzzy c-means (fcm) algorithmoverall efficiency of oxygen mass transferperformance evaluationEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 2, Pp 404-419 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	do concentration uniformity fuzzy c-means (fcm) algorithm overall efficiency of oxygen mass transfer performance evaluation Environmental technology. Sanitary engineering TD1-1066
spellingShingle	do concentration uniformity fuzzy c-means (fcm) algorithm overall efficiency of oxygen mass transfer performance evaluation Environmental technology. Sanitary engineering TD1-1066 Er Li Xiangying Zeng Evaluating the performance of fine bubble diffused aeration systems in cylindrical aeration tanks by fuzzy c-means algorithm
description	In order to make a comprehensive evaluation of the performance of fine bubble diffused aeration systems in cylindrical aeration tanks, the following parameters are considered: distribution of DO concentration in the horizontal direction of the different water depth of an aeration tank, distribution of DO concentration in the vertical direction of the aeration tank, distribution of DO concentration in all the points of the aeration tank and ratio of total mass increment of DO in the aeration tank to total mass of oxygen in aeration air. The aeration characteristic criterion (ACC) is proposed to synthesize these parameters, and weighted sums of the similarity degrees derived from the extensions of fuzzy c-means (FCM) are used to construct ACC. The results show that compared with total volumetric oxygen transfer coefficient () and specific standard oxygen transfer efficiency (), ACC is demonstrated to be more marked and sensitive for the performance evaluation of the fine bubble diffused aeration systems equipped with fine-pore aeration tubes. Moreover the performance of aeration systems equipped with different layouts of fine-pore aeration tubes is comparatively studied, and their performance from best to worst is ring-type diffuser > square-type diffuser > parallel-lines-type diffuser > cross-type diffuser. Highlights The performances of fine bubble diffused aeration systems in cylindrical aeration tanks are evaluated based on the FCM algorithm.; Comparison of the performance evaluation of aeration systems equipped with different layouts of fine-pore aeration tubes is made based on ACC.; The performance of aeration systems equipped with different layouts of fine-pore aeration tubes is comparatively studied based on ACC.;
format	article
author	Er Li Xiangying Zeng
author_facet	Er Li Xiangying Zeng
author_sort	Er Li
title	Evaluating the performance of fine bubble diffused aeration systems in cylindrical aeration tanks by fuzzy c-means algorithm
title_short	Evaluating the performance of fine bubble diffused aeration systems in cylindrical aeration tanks by fuzzy c-means algorithm
title_full	Evaluating the performance of fine bubble diffused aeration systems in cylindrical aeration tanks by fuzzy c-means algorithm
title_fullStr	Evaluating the performance of fine bubble diffused aeration systems in cylindrical aeration tanks by fuzzy c-means algorithm
title_full_unstemmed	Evaluating the performance of fine bubble diffused aeration systems in cylindrical aeration tanks by fuzzy c-means algorithm
title_sort	evaluating the performance of fine bubble diffused aeration systems in cylindrical aeration tanks by fuzzy c-means algorithm
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/9134d01e9ce7463fa8625ffdc432eea5
work_keys_str_mv	AT erli evaluatingtheperformanceoffinebubblediffusedaerationsystemsincylindricalaerationtanksbyfuzzycmeansalgorithm AT xiangyingzeng evaluatingtheperformanceoffinebubblediffusedaerationsystemsincylindricalaerationtanksbyfuzzycmeansalgorithm
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Evaluating the performance of fine bubble diffused aeration systems in cylindrical aeration tanks by fuzzy c-means algorithm

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