What Is Air Admittance Valve?

What Is Air Admittance Valve? An air admittance valve (AAV) is a device that allows air to enter the drainage system in order to balance pressure and prevent water from being siphoned out of the trap when negative pressure develops in the system. It is used on individual vents, branch vents, and circuit vents instead […]

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What Is A Membrane Bioreactor (MBR)? What Are Membrane Bioreactors Used For?

What Is A Membrane Bioreactor (MBR)? A Membrane Bioreactor (MBR) combines membrane filtration techniques such as microfiltration or ultrafiltration with a biological treatment method known as the activated sludge process. This technology is commonly used for treating both municipal and industrial wastewater. There are two main types of MBR systems: the submerged membrane bioreactor (SMBR) […]

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What Is An Activated Sludge?

What Is An Activated Sludge? The activated sludge process is a method of treating sewage and industrial wastewaters using a combination of aeration and biological organisms. This process involves injecting air or oxygen into the waste water in an aeration tank, where microorganisms such as bacteria and protozoa consume and break down organic pollutants. The […]

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What Is A Sedimentation Tank? Types Of Sedimentation Tanks?

What Is A Sedimentation Tank? Sedimentation tanks are large, rectangular tanks with sloping sides. They are used to treat raw water before it enters the distribution system. Water flows through the sedimentation tank and separates suspended solids and other unwanted materials (fines). Sedimentation tanks can also remove heavy metals and other pollutants from water that […]

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