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An air diffuser or membrane diffuser is an aeration device typically in the shape of a disc, tube or plate, which is used to transfer air and with that oxygen into sewage or industrial wastewater. Oxygen is required by microorganisms/bacteria residents in the water to break down the pollutants. Diffusers use either rubber membranes or ceramic elements typically and produce either fine or coarse bubbles. ==Types== Diffusers are generally referred to as either: #Fine Bubble/Fine Pore #Coarse Bubble Other diffused aeration devices include: jet aerators, aspirators, and U tubes.〔U.S. Environmental Protection Agency, Washington, D.C.(2009). ("Fine Bubble Aeration." ) Wastewater Technology Fact Sheet. Document No. EPA-832-F-99-065.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Diffuser (sewage)」の詳細全文を読む スポンサード リンク
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