eprintid: 6891
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/68/91
datestamp: 2023-11-09 16:18:41
lastmod: 2023-11-09 16:18:41
status_changed: 2023-11-09 16:07:56
type: article
metadata_visibility: show
creators_name: Ezechi, E.H.
creators_name: Kutty, S.R.M.
creators_name: Isa, M.H.
creators_name: Malakahmad, A.
creators_name: Udeh, C.M.
creators_name: Menyechi, E.J.
title: Treatment of synthetic domestic wastewater by integrated aerobic/anoxic bioreactor (IAAB)
ispublished: pub
keywords: Ammonia; Biochemical oxygen demand; Bioconversion; Bioreactors; Nitrates; Seed; Sewage treatment plants; Wastewater treatment, Aerobic bioreactors; Biochemical oxygen demands (BOD); Bioreactor performance; Domestic wastewater; Effluent concentrations; Hydraulic retention time; Organic loadings; Organic matter removal, Effluents, ammonia; anoxic conditions; biochemical oxygen demand; biomass; bioreactor; chemical oxygen demand; concentration (composition); domestic waste; integrated approach; nitrate; organic matter; performance assessment; retention; sewage treatment; sludge; wastewater
note: cited By 2
abstract: An integrated aerobic/anoxic bioreactor with total liquid volume of 180 L was utilized for the treatment of synthetic domestic wastewater. Bioreactor performance was monitored by the removal of biochemical oxygen demand (BOD). Organic loadings simulating low and medium strength domestic wastewater with a BOD concentration of 110 and 235 mg/L were used to evaluate the bioreactor in stages 1 and 2 respectively. Hydraulic retention time (HRT) was varied between 12 and 7.2 days. Biomass from a sewage treatment plant was used as seed sludge. BOD removal was monitored from the aerobic, anoxic and effluent compartments of the bioreactor every two days. Results at HRT of 12 days show that the bulk of organic matter removal was prominent in the aerobic compartment with an effluent concentration of 28.7 and 30.5 mg/L at the steady states of stages 1 and 2 respectively. The anoxic compartment showed slight BOD removal with effluent concentration of 24.2 and 27.7 mg/L at the steady states of stages 1 and 2 respectively. The BOD concentration in the effluent compartment was 4.5 and 14.5 mg/L at the steady states of stages 1 and 2. BOD removal took a downtrend when HRT was decreased from 12 to 7.2 days in the aerobic and anoxic compartments, but was constant for the effluent compartment at steady state. Ammonia, nitrate, COD and MLVSS were all monitored. Ammonia, nitrate and COD removal were about 93, 83 and 92 respectively. Growth of biomass (MLVSS) was more prominent in the aerobic compartment. This study demonstrates that an IAAB has the potential to treat wastewater.
date: 2016
publisher: Technoscience Publications
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84986244105&partnerID=40&md5=dbd7e70c517d6b9f0606dac64a7d410f
full_text_status: none
publication: Nature Environment and Pollution Technology
volume: 15
number: 3
pagerange: 943-946
refereed: TRUE
issn: 09726268
citation:   Ezechi, E.H. and Kutty, S.R.M. and Isa, M.H. and Malakahmad, A. and Udeh, C.M. and Menyechi, E.J.  (2016) Treatment of synthetic domestic wastewater by integrated aerobic/anoxic bioreactor (IAAB).  Nature Environment and Pollution Technology, 15 (3).  pp. 943-946.  ISSN 09726268