The industry defines primary treatment as a wastewater treatment method that occurs in a circular or rectangular tank. It lets wastewater substances float willingly or settle, thereby separating them from the water being treated.
Solids that are available to settle will reach sedimentation in a settling tank called a clarifier. Alternatively, solids that are available to drift will do it in a floatation tank called a Dissolved Air Floatation Tank.
Requirement of Specific Chemicals
Facility treatment settings typically need solids separation to happen in a swift and efficient way. As such, it will require several precise chemicals. Flocculent, pH adjustment, and coagulant chemicals are particular to performing primary treatment methods. Samples of coagulants chemicals are Ferric Chloride and Aluminum Sulfate. Meanwhile, polymers are an example of a flocculent chemical.
During this treatment, you will come upon the expression known as the Potential of Hydrogen. It is the concentration of the acidic or basic condition of a liquid.
Coagulant and Flocculent
A coagulant chemical makes extremely fine particles bundle together to create a floc. This involves bunches of particles that combined during a chemical precipitation procedure; therefore, generating a cluster. This coagulating method makes it easier to detach the liquids from the solids by filtering, draining, settling, or skimming.
Meanwhile, flocculent chemicals are used to collect fine particles together after coagulation to create bigger particles through gentle mixing.
Settle-able Solids and Floatable Solids
Achieving sedimentation is also referred to as Separation of Settle-able Solids. This procedure consists of settling and concentrating big particles with the use of gravity separation to the bottom of a clarifier, which is a wastewater treatment process unit. If you need a specific clarifier part to ensure a smooth treatment process, you should buy only from a reputable manufacturer or supplier.
On the other hand, achieving floatation is also referred to as Separation of Floatable Solids. This method involves solids in wastewater that weigh less than the water. They will naturally drift to the Dissolved Air Floatation Tank surface, which is another wastewater treatment process unit.
To sum it up, primary treatment is a type of wastewater treatment that requires the use of specific chemicals. It also involves coagulant and flocculent process, as well as two types of solids separation methods.