Upflow Anaerobic Sludge Blanket Reactor (UASB) Up flow anaerobic sludge blanket technology also known as UASB reactor is a form of anaerobic digester which used in wastewater treatment. UASB reactor is a methane-producing digester, which uses an anaerobic process and forming a blanket of granular sludge and is processed by the anaerobic microorganisms.       Function and application

	Breweries and beverage industry
	Distilleries and fermentation industry
	Food Industry
	Pulp and paper.

Advantages

	During the treatment process a amount of valuable biogas energy will be produced which can be collected for other usage;
	Much less bio-solids waste generated compared with aerobic process because much of the energy in the wastewater is converted to a gaseous form and resulting in very little energy left for new cell growth;
	A low energy requirement for the treatment process;
	Less nutrients required;
	System can be shut down for extended periods without serious deterioration; and
	Can handle organic shock loads effectively.