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Membrane bioreactors are combinations of membrane processes like microfiltration or ultrafiltration with a biological wastewater treatment process, the activated sludge process. These technologies are now widely used for municipal and industrial wastewater treatment. [1] The two basic membrane bioreactor configurations are the submerged ...
Moving bed biofilm reactor. Moving bed biofilm reactor (MBBR) is a type of wastewater treatment process that was first invented by Professor Hallvard Ødegaard at Norwegian University of Science and Technology in the late 1980s. [1] The process takes place in an aeration tank with plastic carriers that a biofilm can grow on.
Secondary treatment (mostly biological wastewater treatment) is the removal of biodegradable organic matter (in solution or suspension) from sewage or similar kinds of wastewater. [1]: 11 The aim is to achieve a certain degree of effluent quality in a sewage treatment plant suitable for the intended disposal or reuse option.
Membrane technology covers all engineering approaches for the transport of substances between two fractions with the help of semi-permeable membranes. In general, mechanical separation processes for separating gaseous or liquid streams use membrane technology. In recent years, different methods have been used to remove environmental pollutants ...
A membrane reactor is a physical device that combines a chemical conversion process with a membrane separation process to add reactants or remove products of the reaction. [1] Chemical reactors making use of membranes are usually referred to as membrane reactors. The membrane can be used for different tasks: [2] Separation.
A rotating biological contactor is a type of secondary (biological) treatment process. It consists of a series of closely spaced, parallel discs mounted on a rotating shaft which is supported just above the surface of the wastewater. Microorganisms grow on the surface of the discs where biological degradation of the wastewater pollutants takes ...
These microbes have also been used in bioremediation to remove contaminants from freshwater and wastewater. More novel uses of biofilms include generating electricity using microbial fuel cells. Challenges to scaling up this technology include cost, controlling the growth of biofilms, and membrane fouling .
A reinforced immersed hollow fiber membrane cassette used in membrane bioreactor process for water treatment [10] Hollow fiber membranes are ubiquitously used in industrial separations, especially the filtration of drinking water. [11] Industrial water filters are mainly equipped with ultrafiltration hollow fiber membranes.
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