Water Treatment Process: Familiarizing With The Coagulation Process

Approximately 15% of Americans obtain their drinking water from private ground water wells that are susceptible to contamination which can lead to water-borne illnesses. The drinking water from these private ground water wells are not subject to EPA regulations, and it is crucial that homeowners have water treatment systems installed to maintain and treat the well. Familiarizing with the entire water treatment process is vital in ensuring that the water is clean. The coagulation process is particularly important in removing unwanted particulates. This process will be explored in detail in this article.

What Is The Coagulation Process About?

The sedimentation in the water is fine and difficult to remove. The coagulation process is responsible for ensuring that the small particles clump together into larger particles. To do this, different types of chemicals and particles are added into the water in order to produce positive charges to neutralize the negative charges that are already on the sediment particles. This causes the sediment to clump together. These larger particles that are a combination of the added chemicals and the sediments are then removed later on in the water treatment process. 

Coagulation is able to remove dirt, dust, and other debris that are found in the water. More often than not, bacterial agents are attached to these particles, and will be removed as well. The particles that have clumped together become quite heavy, and will sink in the water, where it can be easily removed later. To get the added chemicals and particles to attach to the sediment, there are paddles in the tank responsible for slow mixing in a process known as flocculation. The rate of the mixing is crucial. If the mixing is done too quickly, the clumps of particles will break apart into smaller particles. On the contrary, if the mixing is too slow, then the sediments and the added chemicals will not mix well together. 

What Type of Particles Can Be Used for Coagulation?

Different types of chemicals and particles are added into the water treatment tanks to assist in the removal of the particles that are suspended in the water. The particles can be organic, like bacteria, algae, natural organic matter and virus, or inorganic, like clay and silt.

When these particles are added into the water treatment process, they contribute to the overall turbidity, which will cause the water to appear as if it is murky initially; however, the water will eventually become clear as the particles sink.

What Are The Distinct Advantages Between Organic and Inorganic Particles?

Most homeowners will decide on whether they should use organic or inorganic particles solely based on the type of water treatment processing systems from sites like http://www.valleypumpnw.com that they have installed, and the type of particles that are most easily accessible and affordable. When choosing between organic and inorganic particles, consider weighing the pros and cons of both options.

Some common advantages associated with choosing inorganic particles will include:

  • versatility. Inorganic particles are able to function efficiently over a wider range of water pH levels and temperatures. They are less sensitive to low water temperatures.
  • convenience and effectiveness. In comparison to organic particles, a smaller dosage of inorganic particles can get the job done. In addition, less chemical residuals will be produced.

In contrast, some common advantages associated with choosing organic particles will include:

  • being virtually free of toxins.
  • being environmentally-friendly as organic particles are normally biodegradable. 
  • being easily accessible. Organic particles that are used in coagulation can be found anywhere.


Homeowners who rely on private ground water wells as their main source of drinking water should spend a considerable amount of time familiarizing with the water treatment process to ensure that the one that they have installed is sufficient and effective. The coagulation process is one of the most crucial steps as it helps to clump sedimentation together, so that it can be easily removed later on.