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: The addition of additional NaHCO3 to the process overcame the CO2 limitation resulting from the intense competition for inorganic carbon between cyanobacteria and nitrifying bacteria in the photobioreactor, which supported the successful implementation of a nitrification-denitrification process.
66 citations
TL;DR: In this article, a mathematical model was constructed to simulate the behavior of an open algal pond particularly with respect to CO2 supply and utilization, and a number of simulation studies were carried out to evaluate the performance of the system in terms of the production of algae, treatment of wastewater, and CO2 fixation and removal.
Abstract: A mathematical model was constructed to simulate the behavior of an open algal pond particularly with respect to CO2 supply and utilization. The algal pond considered takes wastewater as feed, which provides substrate for aerobic bacteria and also nutrients for the algal-bacterial consortium. CO2-containing gas such as flue gas or biogas is considered as additional source of CO2 to support the growth of algae which at the same time also serves the purpose of CO2 abatement. A number of simulation studies were carried out to evaluate the performance of the system in terms of the production of algae, treatment of wastewater, and CO2 fixation and removal. Important design and operating parameters were considered, including pond depth, hydraulic retention time, composition of the feed wastewater, flow rate and CO2 fraction of the supplied gas flow, and the area utilized for gas flow induction. Several useful observations were made based on the simulation results, with the potential to provide guidance to the f...
66 citations
TL;DR: In this article, a pre-ozonation process was applied to overcome the problem of sulfite inhibition resulted from raw wastewater by decreasing the sulfite concentration through oxidation to sulphate.
66 citations
TL;DR: In this study, the effects of the hydraulic retention time (HRT), pH and substrate concentration on the thermophilic hydrogen production of starch with an upflow anaerobic sludge bed (UASB) reactor were investigated.
66 citations
TL;DR: The results showed that the complete mixing condition was fulfilled in the electrochemical reactor employed in this study and COD removal followed a modified pseudo-first order kinetic model and there existed an optimal inter-electrode gap or H( 2)O(2) dosage so that the highest C OD removal was achieved.
66 citations