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Top 7 Methods of Industrial Water Treatment

January 15, 2020 by josh

What are the top methods of industrial water treatment?

  1. Coagulation
  2. Sedimentation
  3. Filtration
  4. Sludge Drying
  5. Disinfection
  6. Fluoridation
  7. pH Level Correction


It’s unnatural to consume dirty water. Not only is it unhealthy but there are many pathogens within the water that need to be treated. In order to treat water properly, industrial water treatment must be conducted to ensure that the quality of the water is at its best. Here are the top methods of industrial water treatment.



Coagulation is an industrial water treatment method that makes use of liquid aluminum sulfate and polymer. These two chemicals are added to untreated water. A reaction occurs which causes the dirt and various particles in the water to stick together similar to a magnet. This process is called coagulation. The dirt particles attach together forming flocs. To remove the flocs, filtration and settling can be done. What you’re left with is usable water by using two simple chemicals.



Aerial view of water filtration system in the water production p

This is directly related to the first treatment method. This process allows particles that are suspended in water to come together using gravity. The particles settle out of the suspension and when a thick layer of sediment is collected, it’s known as consolidation. If consolidation is mechanically assisted it’s called thickening. Sedimentation is very diverse as it can be used before or after coagulation. If this is done after coagulation the concentration of solids will be reduced. The result is a much more effective filtration process.

The process of sedimentation makes sure that the heavy floc particles settle in the bottom. During sedimentation, the water moves as slowly as possible to accumulate a sludge on the bottom. The sludge moves on to the drying lagoons. In terms of direct filtration, however, the sedimentation step is not included.



Aerial view water treatment tank with waste water.

During the process of filtration, water passes through a filter which functions to take away any profound particles from the water. The filters are usually composed of gravel, sand, and other minerals. You can find an example of filters like these at home. Consumer-grade filters are on a smaller scale but will still function to gather most impurities.

In the industrial water treatment systems, filtration allows impurities that float on the water to gather, making the disinfection process more effective. Industrial filters are usually cleaned regularly by backwashing.


Sludge Drying

If there are solids gathered during sedimentation, sludge drying is needed. Sludge drying involves a common form of drying called lagoon dredging. Lagoon dredging involves mechanically removing the formed sludge from the lagoon. This sludge is then moved to a landfill. Sludge drying also transforms the product into a useful eco fuel when needed.



Disinfection is probably the most important industrial water treatment process. Before you even think about distributing the water, you must remember that there are bacteria, parasites, and viruses present in the water. Water can look clean but cleanliness is a physical attribute. Sanitation and disinfection are required so that the water is potable. Disinfection of water can be attained through physical or chemical disinfectants. These disinfectants also remove any organic substances in the water. If organic substances remain, microorganisms will grow in the water. To ensure that the water is properly disinfected, a chlorine solution or a similar chemical will be applied.



Male chemist holds test tubeglass in hand

Besides being found in toothpaste, fluoride is commonly found in water as well. Fluoridation allows the water to be treated in order to achieve an optimal level of protection from dental cavities. However, only limited amounts of fluoride are added to the water to prevent any further dental problems caused by too much fluoride content. If the water has too much fluoride, the drinking water can easily cause tooth decay.


pH Level Correction

Resort Private pool has weekly check maintenance test, Salt Mete

pH level correction is very important for water treatment. If the water is too acidic or too alkaline, it can cause damage to the body. The pH level should fall to around 6-8 on the pH level scale. If it falls below 6 it can be too corrosive to be processed by the body. Water above level 8 is safe but it’ll taste different and will leave a lot of mineral deposits on your household fixtures. To adjust the pH level, lime will be added with the water. This will stabilize the water and can minimize corrosion to avoid damaging the distribution systems and plumbing.


Key Takeaway

To improve the way of life and to provide potable water for all consumers, it’s important to remember that industrial water treatment plays a big role in this. Without this treatment, drinkable, and safe water will not exist. Manufacturers who sell water rely heavily on this system despite what the labels look like. Each process is meticulously done by professionals using the best equipment available.

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