What is recuperative thickening?
Recuperative thickening (also called Torpey’s process) recycles active biomass and increases solids residence time (SRT) without increasing the size of the digester (Poling and Reynolds 1996).
What is sludge digestor?
Sludge digestion is a biological process in which organic solids are decomposed into stable substances. Digestion reduces the total mass of solids, destroys pathogens, and makes it easier to dewater or dry the sludge.
What is anaerobic sludge disaster?
Anaerobic digestion is a biological wastewater treatment process that is used for treatment and reduction of organic wastes such as organic sludge or concentrated organic industrial waste which contain solids. The first stage involves liquefying of solid material in the sludge. This process is called hydrolysis.
Which is put into anaerobic sludge?
Activated sludge is put into anaerobic sludge digester for further sewage treatment.
What are the types of sludge disposal?
Process 2: Sludge Incineration Biological sludge can be disposed of by incineration; the carbon, nitrogen, and sulfur are removed as gaseous by-products, and the inorganic portion is removed as ash.
Which of the following are advantages of sludge thickening?
Thickening of sludge increases its solids content and reduces the volume of free water thereby minimizing the unit load on downstream processes such as digestion and dewatering. The most commonly used thickening processes include gravity thickening, dissolved air flotation, and rotary drum thickening.
How do you remove sludge from water?
Sludge can be removed by siphoning without emptying the tank. To do this, use an inverted funnel in the end of a hose and move it carefully across the bottom of the tank. The sludge, plus the lower portion of water in the tank, can be released to waste.
What is added in anaerobic sludge digester?
Anaerobic digestion is the biological degradation of organic matter in the absence of free oxygen. During this process, much of the organic matter is converted to biogas (methane, carbon dioxide and water) (CPHEEO 2012).