Chemicals Used in Wastewater Treatment

In wastewater treatment, Coagulation and Flocculation are employed to separate suspended solids from water.

Coagulants
Coagulation is the destabilization of colloids by neutralizing the forces that keep them apart. Rapid mixing is required to disperse the coagulant throughout the liquid.
The most widely used coagulants are:

  1. Aluminum sulfate {Alum}
  2. Poly aluminum chloride {PAC}
  3. Ferrous sulfate
  4. Sodium Aluminate
  5. Silicon Derivatives
  6. Lime
  7. Synthetic Organic Polymers

Antifoams and Defoamers
Unwanted foaming can be problematic in many commercial, manufacturing, and industrial process applications. To ensure that such systems are well maintained and operate at optimum efficiency it is essential that the correct water conditions are maintained at all times. This can be achieved using carefully selected antifoams and defoamers.

Biocides and Disinfectants
The control of microbiological activity is an important, often safety-critical activity in many commercial, manufacturing, and industrial process applications. Some disinfectants in use are:

  • Calcium hypochlorite/ Sodium hypochlorite
  • Sodium bromide

Boiler water treatment chemicals
It is used to manage the problems associated with the use of water including scale formation, metallic corrosion, boiler water carryover, and sludge deposition. They consist of Alkalinity builders, Condensate Line Protection, Multifunctional treatments, Oxygen scavengers, Scale & Corrosion inhibitors, Sludge conditioners.

Anti foulants
The accumulation of microbiological slimes, biofilm, and general bio-fouling in closed circuit water systems can be problematic. It is used in closed loops and circuit systems that use water as a primary medium. They remove and disperse unwanted microbiological fouling and slimes.

Scale and corrosion inhibitors
The unwanted formation of scale and detrimental impact of metallic corrosion can be significant issues that affect the operation and maintenance of closed-circuit water systems.

  • Phosphate esters
  • Phosphoric acid
  • Polyacrylic acid

Tradeasia International offers a wide range of chemicals to cater to your water treatment needs. Contact Us today if what you are looking for is more information to select which chemical to use or to buy from us.

          – Written by

             Manikandan Jayaraj

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