10 Types of Wastewater Treatment Chemicals

To meet the government regulations and standards set by the industry, numerous wastewater solutions have been introduced. Depending on the application of the treatment, one or more chemicals may be necessary for the treatment within the regulations.

The different types of chemicals:

Coagulants

Coagulants are alumunium or iron-based chemicals that change the magnetic charge of particles in water. These magnetic charges attract instead of repelling each other. The waste debris then forms into larger debris which can be filtered out later. The debris removed from the wastewater usually includes arsenic, pathogens, organic matters, fluoride, and chemical phosphorus. 

Flocculants

Flocculants are divided into three types: natural, chemical and grafted. Usually used in water agitation processes, flocculants help waste particles to form clumps or large debris through charge bridging, electrostatic patching and magnetic neutralization.

Defoamers

As the name implies, defoamers are used to control and reduce the levels of trapped air and foam created during wastewater treatment programs. This decreases the potential for an overflow.

Organic Polymers

Organic Polymers are natural flocculants that use an ionized polymer to attract particles into clumps for easier filtration. They are often used with inorganic iron and alumunium-based coagulants.

Reducing Agents    

Reducing agents are mostly known as oxidizing agents that include sodium bisulfite, sodium hydrosulfite, and ferrous sulfate. They are commonly used to remove harmful substances, mostly ozone, hydrogen peroxide, chlorine, and biological contaminants. These chemicals bond with the substances in the wastewater and reduce them to smaller parts that settle out of the water and then filtered out later. 

Sludge Conditioners

Organic matter in the wastewater is harder to filter, which requires additional conditioning through heat and chemicals to thicken the material. The conditioners help in reducing the odour and decreasing the sludge volume. The conditioners aid in the easy removal and disposal of sludge.

Cleaners and Degreasers

Cleaners and Degreasers such as clog busters and alkaline drain openers are used to dissolve grease and oil. They use solvent chemicals to break down the grease, which makes it super easy to remove.

Membrane Cleaners and Antiscalants

Membrane cleaners and Antiscalants are injected into the wastewater before the treatment process. This is used to prevent dissolved mineral salts from combining with the filtration membranes which assures appropriate fluid flow. These are a few of the common membrane cleaners and antiscalants :

 

●      Chlorine Dioxide

●      Muriatic  Acid

●      Soda Ash

●      Algicide

●      Chlorine

●      Sodium Bicarbonate

 

Biocides and Bio-Dispersants

Biocides and Bio-Dispersants aid in reducing the microorganism in wastewater which enhances the efficiency of wastewater treatment. Biocides include cleaners, scale removers, dispersants, penetrants, and disinfectants. 

Heavy Metal Precipitants

Heavy Metals in wastewater are often ionically bonded. Many times other bonding chemicals prevent them from becoming soluble. Heavy metal precipitants dissolve the bonds, allowing the filtration of dangerous materials out of wastewater.

Where can one find the wastewater treatment chemicals?

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