<h2 class = 'uawtitle'>The Stages Of Sewage Water Treatment System</h2><br />
<div style='font-style:italic;' class='uawbyline'>by Jerry Clark</div><br /><br />
<div class='uawarticle'>Waste water is an issue that affects virtually any settlement whether rural or urban. For obvious reasons, the problem is bigger in the urban setting where there are numerous sources that include both private residences as well as commercial premises. <a href="http://proteinmatrixllc.com">Sewage water treatment system</a> is done for a number of reasons. Most importantly, it rids of the water of harmful organisms and makes it safe for disposal. There are four main stages that are involved in this process, screening (pre-treatment), primary, secondary and secondary stages.<br />
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The main activity that takes place in the pre-treatment stage is the removal of solid objects from the effluent. This is achieved by using a series of meshes of varying sizes. The largest has a size of about 5cm, the medium sized is between 0.3cm and 0.5cm and the smallest 1.5 and 3.0 millimeters. For larger plants, mechanical rakes may be used. These rakes move continuously to help separate the solids according to their sizes.<br />
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Apart from the foreign objects, grit is another important component that is removed at this stage. Most of the grit comes from street runoff that gets mixed up with sewage from residential and commercial buildings. Grit separation is a gravity dependent process. The effluent is allowed to flow gently through a V-shaped channel which causes the grit to settle at the bottom. The main benefit of the entire pre-treatment stage is to protect the hardware that is used in the subsequent stages.<br />
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For the primary stage, large tanks are required. These tanks hold the effluent for some time and allow for sedimentation to take place. A continuous slow flow in and out of these tanks takes place but the average residence time allows for most suspended solids to settle at the bottom. The solids that settle at the bottom are known as sludge. They may be digested to produce methane or disposed in landfills.<br />
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The secondary treatment stage involves the breakdown of biological waste. This is achieved by use of microorganisms such as protozoa, anaerobic bacteria and aerobic bacteria. When the material is broken down, the concentration of harmful microorganisms is markedly reduced. There are two main types of systems that are involved: the fixed film system and the suspended growth system. In the former system, biological contactors and trickling filters are used while in the latter the sewage is directly mixed with biomass.<br />
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Another alternative approach is to use enzymes instead microorganisms in the secondary stage. The enzymes are similar to those that are produced by the microorganisms. This method appears to be less preferred due to the inability to produce all the enzymes needed. This makes the process very inefficient. At the same time, it is more expensive.<br />
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The tertiary stage is the final stage in the process. It involves a number of process that are mainly used to optimize on the benefits that have been achieved with the other stages. Biological filters are often used here to break the organic materials further. Other important processes include disinfection, reduction in the levels of urea and the associated odor. Many plants tend to skip this stage if the water is not for reuse.<br />
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Treatment of waste water may also be done on onsite septic tanks in residential or commercial compounds. You need to be aware of the guidelines that govern the process of installing and operating such plants before you embark on the process. Most of the onsite plants have a two stage process rather than the four stages found in the advanced plants.<br />
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<div class='uawlinks'>You can get a detailed overview of the benefits of installing a <a href="http://proteinmatrixllc.com">sewage water treatment system</a> and more info about an experienced installer at http://proteinmatrixllc.com right now.</div><br />
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