Topic
Hydraulic retention time
About: Hydraulic retention time is a research topic. Over the lifetime, 6406 publications have been published within this topic receiving 151005 citations.
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TL;DR: In this article, an innovative process SAM (sequencing anoxic/anaerobic membrane bioreactor) was developed to enhance biological phosphorus removal (EBPR), and its performance was investigated.
126 citations
TL;DR: In this paper, the results obtained from three wastewater treatment plants working in parallel are presented, and different tendencies regarding nutrients removal are shown by the three wastewater Treatment plants. And the performances in terms of nitrogen and phosphorus removal of the MBBR-MBR system which contained carriers only in the aerobic zone (67.34±11.22% and 50.65± 11.13%) were slightly better than those obtained from another experimental plants.
126 citations
TL;DR: Reactor operation at an intimate control of HRT and R/S ratio was preferable for hydrogen production, and a short equivalent HRT gave good hydrogen productivity and high hydrogen production rate (HPR) values.
Abstract: Studies on hydrogen production in an anaerobic sequencing batch reactor (AnSBR) indicated that the anaerobic acidogenic conversion of sucrose could produce hydrogen. The hydrogen production of acclimated sewage sludge depended on hydraulic retention time (HRT) and reaction period/settling period (R/S) ratio. A short equivalent HRT, even up to 4 h, gave good hydrogen productivity and high hydrogen production rate (HPR) values. For each equivalent HRT, R/S ratio control also increased the hydrogen productivity and HPR. Reactor operation at an intimate control of HRT and R/S ratio was preferable for hydrogen production. At HRT 8 h, R/S ratio 5.6 and an organic loading rate of 0.23 mol-sucrose dm−3 day−1, each mole of sucrose in the mesophilic hydrogenic reactor yielded 2.6 mole of hydrogen; each gram of biomass produced 0.069 mole of hydrogen per day. Copyright © 2003 Society of Chemical Industry
125 citations
TL;DR: A pilot-scale two-phase hydrogen/methane fermentation system generated 3.9l biogas per unit time and reactor volume from food waste, of which the fraction of H2 was approximately 60% at a hydraulic retention time (HRT) of 21h as discussed by the authors.
125 citations
TL;DR: In this article, a fixed-film bioreactor system was constructed with a highly porous polyurethane foam to incubate microorganisms at concentrations up to 8000 mg/l, and the support frame was built from cylindrical plastic pall rings to form a packed bed of mixed media.
125 citations