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, the authors studied landfill leachate treatment efficiency during fermentation process in UASB reactor and post-treatment in RO process and determined the optimal concentration of raw leachates in synthetic wastewater.
81 citations
TL;DR: In this article, the relative efficacies of two-phase and single-stage, high-rate anaerobic sludge digestion at mesophilic and thermophilic temperatures at several levels of hydraulic residence time (HRT), organic loading rate, and feed consistency are studied.
Abstract: The objectives of this research are to study the relative efficacies of two‐phase and single‐stage, high‐rate anaerobic sludge digestion at mesophilic and thermophilic temperatures at several levels of hydraulic residence time (HRT), organic loading rate, and feed consistency. In addition, the effects of pH, temperature, and HRT on acid‐phase digestion are studied. Data from continuous‐flow digestion studies showed that the two‐phase process is better than single‐stage digestion under all test conditions when compared on the bases of gas yield and production rate, reductions of volatile solids, carbohydratelipid‐protein conversions, buffer‐capacity, and unconverted volatile acids in the effluent. A mesophilic two‐phase system exhibits about the same methane yield and solids reduction at a 3‐day HRT as those of single‐stage high‐rate digestion at 15‐ and 17‐day HRT's. The enhanced stability of two‐phase digestion relative to single‐stage digestion increases as the system loading and hydraulic dilution rate...
81 citations
TL;DR: The mathematical models were developed and well calibrated for simulating the AnMBR performance in the biodegradation of COD and antibiotics and the obtained total COD removal efficiency was as high as 94.0% and accompanied with VFA accumulation.
81 citations
TL;DR: In this article, a flat submerged membrane with a biological reactor was investigated for synthetic wastewater treatment of high concentration, and the increase of suction pressure as a result of fouling of the submerged membrane, nitrification and chemical oxygen demand (COD) removal efficiencies were monitored during 4-9 months operation.
81 citations
TL;DR: A submerged membrane bioreactor (SMBR) and a conventional activated sludge system (CAS) were compared in parallel over a period of 210 days on treating synthetic ammonia-bearing inorganic wastewater under similar conditions, indicating that some differences existed between the two systems in terms of microbial community structure.
81 citations