Everything You Need To Know About Raw Water Purification Systems

To warrant that processes run efficiently, and the quality of products remain unaltered, many industrial companies utilize water purification systems. While there are various types of water purification systems, one most commonly used is the raw water treatment system. The right raw water treatment can help facilities avoid costly downtime, expensive maintenance fees, and other problematic issues. Let’s take a look at what a raw water treatment system is and how it works.

What is a raw water treatment system?

A raw water treatment system is made up of various individual technologies that address specific needs. An efficient and well-designed system can easily handle variations in water chemistry, turbidity, flow and quality. A good system should ideally be able to accommodate these fluctuations; leading to lower replacement costs.
How do raw water treatment systems work?

Usually, a raw water treatment facility follows the below-mentioned steps:

Step 1: Raw Water Intake

Raw water or untreated water originates from sources like rivers, lakes, oceans, or underground. When a facility draws water from their surroundings, they use mesh screens to remove any large objects like twigs, leaves, and fish. Once the water is pumped to the main facility, that is where the treatment begins.

Step 2: Coagulation

Once all large objects are removed from the raw water, various chemicals are added to a tank that is designed to remove suspended solids and contaminants. The chemicals used in this stage combine all smaller particles and turn them into heavier ones that settle down. For instance, Klarimax by Thermax uses poly-electrolyte and coagulants at higher PH levels to help with the process. 

Step 3: Flocculation

With the completion of the coagulation process, the water enters the flocculation chamber. This chamber slowly stirs the coagulated particles with the help of charged molecules that pulls all the coagulated particles together.

Step 4: Sedimentation

With coagulation done, the flocculated material and water flow into another tank. In this tank, the water circulates from the centre out, which results in the solid particles to settle down in the tank to create sludge. Simultaneously, clear water flows out of the chamber into another storage tank. At this stage, the sludge is also pumped out of the sedimentation tank or tube settler.

Step 5: Filtration

The filtration stage uses various methods to filter the clear water. For instance, some filters are tightly packed with sand; when the clear water passes through the sand, any remaining particles are trapped in the sand. Alternatively, some water purification systems also use Dual Media Filters (DMF). A DMF filter may consist of a combination of sand, pebbles, and anthracite or Activated carbon. Klarimax by Thermax uses a DMF filter that is designed to remove suspended matter to a level of < 5ppm (parts per million).

Step 6: Distribution

Finally, the treated raw water is pumped into a holding tank that can be used based on the requirements.

Now that you know the steps involved in treating raw water ensure that you choose to work with a good engineering company that can solve your specific needs.  Furthermore, a good company can help you choose the right system from the various water purification systems.