Assessment of the utilization rate of organic and nitrogenated substrates by the microorganisms in a sequencing batch reactor treating tannery wastewater

IF 0.3 4区 环境科学与生态学 Q4 ENGINEERING, CIVIL
Estefania Freytez-Boggio, A. Márquez‐Romance, Sandra Gabriela Barrazueta-Rojas, Edilberto Guevara-Pérez
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引用次数: 0

Abstract

In this article, the utilization rate of organic and nitrogenous substrates contained in tannery wastewater by a sequential batch reactor is evaluated. Two factorial experimental designs (FEDs) were implemented. FED1 (22) used granular biomass, the aeration sequence (oxic, anaerobic-oxic) and cycle duration (6 and 24 h). FED2 (4 x 3) included suspended biomass, reaction phases (anoxic I, oxic, anoxic II (CND: conventional nitrification-denitrification) and (SND: simultaneous nitrification-denitrification), filling time (fast, slow and in stages). The substrates examined were chemical oxygen demand (COD), ammonium (NH4+-N) and total nitrogen Kjeldahl (TKN). The utilization rates were COD (-100 and -200 mg l-1 h-1) (FED1) and (-48 and -75 mg l-1 h-1) (FED2), being 1.5 to 2 times higher in FED1 than FED2. In TKN (-5 mg l-1 h-1), and NH4+-N (-30 mg l-1 h-1), they were significant in the anoxic I and oxic phases.
顺序间歇式反应器处理制革废水中微生物对有机和含氮底物利用率的评价
本文采用顺序间歇反应器对制革废水中有机物和含氮基质的利用率进行了评价。实施了两个析因实验设计(FEDs)。FED1(22)使用颗粒生物量、曝气顺序(好氧、厌氧-好氧)和循环持续时间(6和24小时)。FED2(4 x 3)包括悬浮生物量、反应阶段(缺氧I、好氧、缺氧II(CND:常规硝化反硝化)和(SND:同步硝化反硝化作用)、填充时间(快、慢和分阶段)。检测的底物是化学需氧量(COD)、铵(NH4+-N)和总氮凯氏定氮(TKN)。COD利用率为(-100和-200 mg l-1 h-1)(FED1)和(-48和-75 mg l-1 h-1)(FED2),FED1比FED2高1.5至2倍。在TKN(-5 mg l-1 h-1)和NH4+-N(-30 mg l-1 h-1)中,它们在缺氧I期和好氧期显著。
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来源期刊
Tecnologia Y Ciencias Del Agua
Tecnologia Y Ciencias Del Agua ENGINEERING, CIVIL-WATER RESOURCES
CiteScore
0.60
自引率
0.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: Published by the Mexican Institute of Water Technology, Water Technology and Sciences (Tecnología y ciencias del agua) is a highly specialized journal which reflects two important characteristics: The interdisciplinary nature of its articles and notes. The international scope of its authors, editors, reviewers, and readers. It constitutes the continuity of the journal Irrigación en México (Irrigation in Mexico) (1930-1946); Ingeniería hidráulica en México (Hydraulic Engineering in Mexico) (1947-1971); Recursos hidráulicos (Hydraulic Resources) (1972-1978), and Ingeniería hidráulica en México, second period (1985-2009). The journal is aimed at researchers, academics, and professionals who are interested in finding solutions to problems related to the water. The journal’s contents are interdisciplinary and contain previously unpublished articles and notes that offer original scientific and technological contribution that are developed in the fields of knowledge related to the following disciplines: Water and energy. Water quality. Hydro-agricultural sciences. Political and social science. Water management. Hydrology. Hydraulics.
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