biofilm wastewater Articles
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Modeling phototrophic biofilms in a plug-flow reactor
The use of phototrophic biofilms in wastewater treatment has been recognized as a potential option for development of new reactor configurations. For better understanding of these systems, a numerical model was developed including relevant microbial processes. As a novelty, this model was implemented in COMSOL Multiphysics, a modern computational environment for complex dynamic models. A ...
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Novel application of bamboo-based fibers in a biological contact oxidation process
Generally, biofilm-supporting carriers in biological contact oxidation processes are made from thermoplastic polymers, which cause potential ecological damage because of the low biodegradation and high accumulation in organisms. Thus, four bamboo-based fibers, bamboo primitive fiber, bamboo fiber, bamboo charcoal fiber (BBF) and bamboo charcoal–cotton blending fiber (BCBF), were used as ...
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Development and application of some renovated technologies for municipal wastewater treatment in China
China has been experiencing fast economic development in recent decades at the cost of serious environmental deterioration. Wastewater discharge, especially municipal wastewater discharge, and non-point pollution sources are becoming the major water pollution source and research focus. Great efforts have been made on water pollution control and a number of renovated technologies and processes for ...
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Design of multistage activated sludge-biofilm reactors: a rational approach
This paper outlines a mathematical model developed for steady-state multistage completely mixed hybrid reactors, starting from basic mass balance expressions for the system and Fick's theory for diffusion of substrate into the biofilm. The model being complex, a design procedure has been proposed that uses predefined effluent quality profile across the system and results in an accurate and ...
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Calibration and verification of models of organic carbon removal kinetics in Aerated Submerged Fixed-Bed Biofilm Reactors (ASFBBR): a case study of wastewater from an oil-refinery
The article presents a case-study on the calibration and verification of mathematical models of organic carbon removal kinetics in biofilm. The chosen Harremöes and Wanner & Reichert models were calibrated with a set of model parameters obtained both during dedicated studies conducted at pilot- and lab-scales for petrochemical wastewater conditions and from the literature. Next, the models were ...
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Comparison between hybrid moving bed biofilm reactor and activated sludge system: a pilot plant experiment
The paper presents the comparison between the traditional activated sludge system (AS) and a hybrid moving bed biofilm reactor (HMBBR). In particular, an experimental campaign has been carried out at the WWTP in Palermo (Italy), on a pilot plant consisting of two pre-anoxic schemes. The aerated tank of the HMBBR line was filled with suspended carriers (AnoxKaldnes™ K1), with a 30% filling ratio. ...
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WWTP with MABR Technology in Rural Israel - Case Study
PROJECT DETAILS LOCATION HaYogev rural residential development in Israel CUSTOMER Moshav HaYogev SOLUTION Wastewater Treatment Plant TECHNOLOGIES Membrane aerated biofilm reactor (MABR) wastewater treatment Revolutionary MABR product solution implemented at wastewater treatment plant in rural Israel Background HaYogev is a residential development in the rural area of Jezreel Valley, ...
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Organic removal activity in biofilm and suspended biomass fractions of MBBR systems
The moving bed biofilm reactor (MBBR) wastewater treatment process is usually designed based on the assumption that all activity in the process occurs in the biofilm on the MBBR carriers, although there is always some active biomass in the bulk liquid due to biofilm sloughing and, sometimes, free-growing bacteria. In this study the removal of organic matter is evaluated in laboratory-scale MBBR ...
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A novel fast mass transfer anaerobic inner loop fluidized bed biofilm reactor for PTA wastewater treatment
In this paper, a fast mass transfer anaerobic inner loop fluidized bed biofilm reactor (ILFBBR) was developed to improve purified terephthalic acid (PTA) wastewater treatment. The emphasis of this study was on the start-up mode of the anaerobic ILFBBR, the hydraulic loadings and the operation stability. The biological morphology of the anaerobic biofilm in the reactors was also analyzed. The ...
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Performance of a fixed-bed biofilm reactor with microbubble aeration in aerobic wastewater treatment
Microbubble aeration is supposed to be highly efficient for oxygen supply in aerobic wastewater treatment. In the present study, the performance of a fixed-bed biofilm reactor microbubble-aerated using a Shirasu porous glass (SPG) membrane system was investigated when treating synthetic municipal wastewater. The biofilm formation on the carriers was enhanced with microbubble aeration due to ...
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Trickling Filter Technology Is Still Relevant
Trickling filters have been the workhorse of the biological wastewater treatment industry for over 100 years. Trickling filters have proven to efficiently remove pollutants from wastewater since their inception, earning recognition as a technology that will continue to serve the industry well into the future. History Prior to the use of structured sheet media, rock was used in trickling filters ...
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Development of a compact, cost effective, and energy efficient biofilm reactor for wastewater treatment and effluent reuse
Abstract The CFIC (Continuous Flow Intermittent Cleaning) biofilm reactor has been developed. It contains highly packed biofilm carriers to a degree that little movement of the carriers occurs in the reactor during normal operation. The process has continuous inflow to the bioreactor and intermittent cleaning, which removes excess biomass from the biofilm carriers. A large void volume ...
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4 Misconceptions of MBBR Biofilm Reactor for Wastewater Treatment
Common Misconceptions of MBBR Biofilm Reactor Technology for Wastewater Treatment When looking for information about a product or service you’re interested in, it can occasionally be difficult to find the answers to your specific questions. Sometimes you can’t really find anything and you end up making inferences based on what you did find. Sometimes, those inferences can be ...
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Hybrid activated sludge/biofilm process for the treatment of municipal wastewater in a cold climate region: a case study
A hybrid activated sludge/biofilm process was investigated for wastewater treatment in a cold climate region. This process, which contains both suspended biomass and biofilm, usually referred as IFAS process, is created by introducing plastic elements as biofilm carrier media into a conventional activated sludge reactor. In the present study, a hybrid process, composed of an activated sludge and ...
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The Resilience of Biofilms
These elegant formations of microbes enable robust wastewater treatment Some of Fluence’s signature wastewater treatment solutions are based on membrane aerated biofilm reactor (MABR) technology, which was first introduced in the 1990s. MABR harnesses biofilm, an extremely resilient mode of life that has been found in sediment dating back 3.4 billion years. These formations of microbial ...
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Biofilm Enables Streamlining of Wastewater Treatment
The biofilm that forms on the membrane used in Fluence’s MABR technology allows nitrification and denitrification to take place simultaneously in the same tank. Simultaneous nitrification and denitrification means wastewater treatment can take place in a single tank A membrane aerated biofilm reactor (MABR) is a revolutionary wastewater treatment and reuse solution that cuts the energy ...
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Biofilm Enables Streamlining of Wastewater Treatment
Simultaneous nitrification and denitrification means wastewater treatment can take place in a single tank A membrane aerated biofilm reactor (MABR) is a revolutionary wastewater treatment and reuse solution that cuts the energy requirements of the aeration cycle by as much as 90% compared to legacy activated sludge systems, for which aeration is by far the largest energy expense. Its low energy ...
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5 Top advantages of MBBR wastewater treatment
Wastewater treatment solutions have become one of the significant moves to filter waste water. Whether it is for fighting with the growing shortage of drinking water or finding better water sources for wastewater, several technologies have been practice for centuries, and MBBR wastewater treatment is being used for filtering waste water in both industrial and domestic sectors. MBBR or Moving Bed ...
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Moving Bed Biofilm Reactor (MBBR) in Wastewater Treatment
The Moving Bed Biofilm Reactor (MBBR) is another wastewater treatment technology. The major benefit of the MBBR process is a reduced footprint – an important major advantage when faced with space constraints. The Sequencing Batch Reactor process was discussed in a previous post – this article is a continuation of our series on the various wastewater treatment technology options ...
By Coftec
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Mathematical modelling of biofilms and biofilm reactors for engineering design
Mathematical models are critical to modern environmental biotechnology—both in research and in the engineering practice. Wastewater treatment plant (WWTP) simulators are used by consulting engineers and WWTP operators when planning, designing, optimizing, and evaluating the unit processes that comprise municipal and industrial WWTPs. Many WWTP simulators have been expanded to include a submerged ...
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