Anaerobic Microbiolysis Essay

1336 Words 6 Pages
Methane is the final product of Anaerobic Digestion. A mixture of methane and carbon dioxide is called a biogas and it can be used for heating and can be used as a natural gas. Anaerobic treatment systems are divided into “high rate” systems involving biomass retention and “low rate” systems without biomass retention. High rate systems are characterized by a relatively short hydraulic retention time but long sludge retention time and can be used to treat many types of wastewater. Low rate systems are generally used to digest solid wastes and are characterized by a long hydraulic retention time, equal to the sludge retention time. Methane is produced through the process of anaerobic digestion. Anaerobic microbiological decomposition is …show more content…
The anaerobic digestion process can be split up into the following four phases, each requiring its own characteristic group of micro-organisms: 1) Hydrolysis: the conversion of non-soluble biopolymers to soluble organic compounds. 2) Acidogenesis: conversion of soluble organic compounds of volatile fatty acids. 3) Acetogensis: conversion of volatile fatty acids to acetate and hydrogen. 4) Methaneogenesis: conversion of acetate and carbon dioxide plus hydrogen to methane …show more content…
Anaerobic treatment also creates less sludge than aerobic treatment does, but it produces a higher amount of methane. The methane that is produced through anaerobic treatment combines with carbon dioxide to make a biogas. The biogas can then be used as a renewable energy source, that can replace things such as fossil fuels such as oils and natural gases. In order to get the biogas useable, it must be treated to get rid of the hydrogen sulfide. The treatment of the biogas can become expensive but is it necessary to get it certified by the EPA so that the amount of hydrogen sulfide that is released into the atmosphere is at a minimum. Another positive to anaerobic digestion is that it is a non-polluting process. It takes less energy and less chemicals to go through the anaerobic treatment process. The sludge from anaerobic treatment can be preserved for long periods of time without any feeding. The construction costs of an anaerobic treatment digester is a lot lower than an aerobic treatment, and the space required for anaerobic treatment is a lot smaller than conventional systems. The most suitable temperature for anaerobic treatment is between 95 to 135 degree Fahrenheit. The final stage of the sludge produced in anaerobic is pretty much odorless. If the sludge is treated the right way, at the end of the process the sludge is dewatered and then the sludge

Related Documents