Chemicals for water treatment in power plant

 

Chemicals for water treatment  in power plant

Water treatment in power plants involves various chemicals to ensure the quality and safety of water used in different processes. The specific chemicals used can vary based on the type of power plant, water source, and the desired water quality. Here are some common chemicals used in water treatment for power plants:

v Coagulants and Flocculants:

·         Aluminum sulfate (alum): Used as a coagulant to destabilize particles in water.

·         Ferric chloride: Another coagulant for particle removal.

·         Polyelectrolytes: Used as flocculants to aid in the formation of larger particles that can be easily removed.

v Disinfectants:

 

·         Chlorine: Commonly used for disinfection to kill bacteria and other microorganisms.

·         Chlorine dioxide: An alternative to chlorine, especially for controlling biofilm and microbial growth.

v pH Adjusting Chemicals:

 

·         Sulfuric acid and caustic soda: Used to adjust the pH of water to the desired range.

v Scale Inhibitors:

 

·         Phosphates: Used to prevent the formation of scale in pipes and equipment.

v Corrosion Inhibitors:

 

·         Orthophosphate: Besides inhibiting scale, it also serves as a corrosion inhibitor.

v Antifoaming Agents:

 

·         Defoamers: Used to control foam formation in various stages of water treatment.

v Ion Exchange Resins:

 

·         Cation and anion exchange resins: Used for demineralization processes to remove ions that can cause scaling or corrosion.

v Activated Carbon:

 

·         For removing organic impurities: Used in some cases to absorb organic contaminants and improve water quality.

v Biocides:

 

·         Bromine, chlorine, or other biocides: Used to control microbial growth in cooling water systems.

v Oxygen Scavengers:

 

·         Hydrazine, sodium sulfite: Used to remove or reduce dissolved oxygen in boiler feedwater to prevent corrosion.

v Polymer Additives:

 

·         Polymers: Used in some processes to enhance solid-liquid separation.

It's important to note that the specific chemicals used can vary based on factors like the type of power plant (coal, gas, nuclear, etc.), the water source (river, lake, groundwater), and the specific requirements of the plant. The use of these chemicals is carefully regulated to ensure compliance with environmental standards and to protect the integrity of the power plant's equipment. Additionally, the dosage and application of these chemicals are critical and are determined through thorough water testing and analysis.

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These are some chemicals  are very important in water treatment .All these are commercial grade

 chemicals .Before utilizing  insure their chemical purity and quality by checking both physical

 and chemical testing.

1)     Hydrochloric Acid (30 -33 % ) Commercial Grade

2)     Sodium Hydroxide (   40% ) Caustic Soda

3)     Sodium chloride (56% ) Common Salt

4)     Sulphuric acid (95- 98% )

5)     Trisodium phosphate  (43% )TSP

6)     Technical grade  TSP   (94% )TSP

7)     Hydrazine Hydrate (70%)

8)     Ammonia (15% )Liquor Ammonia

9)     Morpholene (85%) Commercial Grade

10) Sodium Hypochlorite (6 -10 %)

      11) Alum (17%)

     12) Ferric chloride (43%)