Chemical Engineering @ChemengFiles.Com

Water is one of the most abundant natural resource that exists on the planet, but a large percentage that can not be used in either environment that is salt water, waste water or contaminated by any harmful elements. In the treatment that is done to purify water or reusable again, is that dedicated to wastewater on time and is characterized by separating the liquid from all those elements or organisms harmful to human life.

Since that separation is the treatment of water and mud, which are the processes by which work is impure elements that make water. The best treatment is to separate sludge solids which are larger than those carried out at an early stage, with those so-called bio solids that correspond to a secondary stage of wastewater treatment, toxic compounds (organic and inorganic). The presence of toxic elements such as heavy metals, hinders the performance of mud as useful the environment, so the goal is to minimize the existence of microorganisms and organic matter type in the same mud, so that to be used not cause disease.

The treatments are given to three basic sludge, anaerobic digestion and aerobic composting and finally. To begin, anaerobic digestion is a process of bacterial type and is carried out in the absence of oxygen, this can be worked at different temperatures thus obtained different results, you can work at a temperature of 55 º C either 36th C. In both cases as an incidental part of the water treatment works sludge is to obtain a bio gas with high concentrations of methane, the recycled and separated from their source may be a source of energy for micro turbines or other machinery systems.

As opposed to the process detailed above, is the aerobic process to be a bacterial, logically carried out in the presence of the element oxygen. The organic matter is consumed by bacteria and converted into carbon dioxide, where there is the matter of the bacteria die and can be reused to feed other bacteria. Finally, this sludge treatment called fertilization, which can be categorized into aerobic processes as it begins with the mixture of solids in waste water with various carbon sources, such as sawdust, and as the bacteria consume these elements are destroying the microorganisms and parasites that cause innumerable diseases. In this way the mud is in the best conditions for use, for example, as fertilizer on agricultural fields.