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img width="428" src="">Our modern lifestyles offer us the luxury of using a variety of products to make our lives more comfortable and easier, but this comes at a cost. A common byproduct of our current lifestyle includes wastewater, which can be water from a shower stall or from a wet road. This wastewater is not suitable for human consumption or direct use.Fortunately, by employing wastewater treatment technologies that filter and treat wastewater by removing contaminants such as sewage and chemicals, we can make wastewater drinkable and usable.Four common wastewater treatment methods include physical water treatment, biological water treatment, chemical treatment, and sludge treatment. Let's learn more about these processes.Physical water treatmentIn this stage, physical methods are used to clean the wastewater. Solids are removed using processes such as screening, sedimentation and skimming. This process does not involve any chemicals.One of the main techniques of physical wastewater treatment includes sedimentation, which is a process of suspending insoluble/heavy particles from the wastewater. Once the insoluble material settles to the bottom, pure water can be separated.Another effective physical water treatment technique includes aeration. The process involves circulating air through the water to provide it with oxygen. Filtration, the third method, is used to filter out all contaminants. You can use special types of filters to pass the wastewater through and separate the contaminants and insoluble particles present in it. Sand filters are the most commonly used filters. Some oils and grease on the surface of the wastewater can also be easily removed by this method.Biological Water TreatmentThis? uses various biological processes to break down organic matter present in the wastewater, such as soap, human excrement, oil and food. Microorganisms metabolize the organic matter in wastewater in biological treatment. It can be divided into three categories.Aerobic processes: Bacteria break down organic matter and convert it into carbon dioxide available to plants. Oxygen is used in this process.Anaerobic process: Here, fermentation is used to ferment the waste at a specific temperature. Oxygen is not used in the anaerobic process.Composting: An aerobic process in which wastewater is treated by mixing it with sawdust or other carbon sources. https://www.vingle.net/posts/4283176 Secondary treatment removes most of the solids present in the wastewater; however, some dissolved nutrients, such as nitrogen and phosphorus, may remain.Chemical water treatmentAs the name implies, this treatment involves the use of chemicals in the water. Chlorine is an oxidizing chemical that is typically used to kill bacteria that break down water by adding contaminants to the water. Another oxidizing agent used to purify wastewater is ozone. Neutralization is a technique in which water is brought to its natural pH of 7 by adding an acid or base. The chemicals prevent bacteria from multiplying in the water, thus making the water pure.Sludge TreatmentThis? is a solid-liquid separation process in which as little residual water as possible is required in the solid phase and as little residual solid particles as possible are required in the separated liquid phase.An example of this includes sludge dewatering in industrial wastewater or sewage treatment plants, where the residual water in the dewatered solids determines the cost of treatment, and the quality of the centrifuged liquid determines the pollution load returned to the treatment facility. You need to minimize both.A solid-liquid separation device is used to remove solids from wastewater, such as a centrifuge.Wastewater has a significant impact on nature and it is important to treat wastewater effectively. By treating wastewater, you not only save the creatures that thrive in it, but you also protect the entire planet.