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Mechanical Dewatering and Sludge Treatment-The Basics to Know of

Mechanical dewatering is basically associated with the treatment of wastewater in the wastewater treatment plants and it basically sees the separation of sludge, basically the residual sludge from wastewater treatment plants or such residues as fecal sludge, into liquid and solid parts. This often sees the employment or application of such key methods as the use of the belt filter presses, centrifuges, and other chamber filter presses. By and large, most of these methods re often quite sophisticated techniques and are hardly as efficient when it comes to cost matters. As such, a number of them are not easy to implement in smaller systems and at some community levels. The process in most cases sees no treatment of the sludge but simply involves the separation of the parts, the solid from the liquid. However, both the solid and the liquid parts still remain laden with the pathogens and pollutants and this is one thing that should be noted going forward. There are a number of advantages of mechanical dewatering as having been highlighted in the following part of this post.

By and large, dewatering can be done with the use of various techniques and some of the most common ones are such as the use of the belt presses and centrifuges, filtration or the other physical methods such as drying in beds. The mechanical dewatering and filtration processes often see the use of chemicals that help speed and make the process more effective. Read on to learn some more about the treatment process and the basic design process.

We will start by having a look at the Belt Filter Press. By and large, the modern belt presses and how they are used for the separation of the sludge often involves a lot of processes in between, from the chemicals used for the conditioning of the wastewater, gravitational drainage and as well mechanical presses as well. The process basically sees the sludge squeezed in between tensioned belts and a series of rollers, and these serve to increase the pressure, which in the end ends up removing moisture and result in a dewatered sludge cake.

Then there are the Chamber Filter Presses. These basically make use of the filters to separate the liquid, as well known as filtrate, from the sludge and then collects the cake in the chambers. These chambers are arranged in a plate park.

Besides this, there are the centrifuges that are as well effective for the separation of solids waste from the liquid waste. A good number of these systems are a quite high tech and call for the input of the experts in design. This in most cases results in added or heightened costs. As we have already mentioned, these are in most cases rather sophisticated techniques and as a result of this, they tend to be rather cost ineffective when it comes to the need to have them implemented in smaller setups like community levels. But they still can be employed anyway. They additionally call for some degree of maintenance and repairs for operational efficiency. See here for more on these.

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