Water treatment plant chemicals and their functions



WTP CHEMICALS
SL NO.
CHEMICAL NAME
FUNCTION
APPLICATION
1
Sodium Hypochlorite
To kill microorganisms (bacteria. Algae and other germs)
Clarifier
Ultra Filter (UF)
Cooling tower
2
Ferric chloride
Coagulation
Clarifier
3
Polyelectrolyte
Flocculation
Clarifier
4
Hydrochloric acid
Regeneration by cation exchange
Regeneration of SAC, MB
Membrane cleaning
UF & RO Membranes
5
Caustic soda lye
Regeneration by anion exchange
Regeneration of SBA, MB.
Membrane Alkali Cleaning
UF
6
Caustic flakes
Regeneration by anion exchange
Regeneration of SBA, MB.
7
Trisodium phospate
Sludge Conditioner & Corrosion inhibitor
Boiler steam drum Drum (Through HP  dosing pump)
8
Hydrazine Hydrate
To remove Oxygen
1-Deaerator outlet feed water line (Through LP dosing)
2-Boiler Wet Preservation
9
Morpholine
pH boosting
Deaerator outlet feed water line (Through LP dosing)
2-MB outlet
3-Boiler Wet Preservation
MB outlet
Boiler Wet Preservation
10
Antiscalant
Prevention of scale
RO Membranes
11
Sodium Meta bisulphite
To reduce chlorine
RO Membranes
12
Biocide
Reduce Algae, bacteria & fungi growth
RO Membranes cleaning
13
Acidic cleaner
Salts removing
RO membranes
14
Alkaline Cleaner
Salts removing (Cleaning inorganic scales)
RO membranes
15
Scale inhibitor
Prevents scaling
Cooling Tower
16
Corrosion  inhibitor
Prevents Corrosion
Cooling Tower
17
Bio-Dispersant
Bio-Dispersion
Cooling Tower
18
Non oxidising Micro Biocide
To kill microorganisms
Cooling Tower
19
Non oxidising Micro Biocide
To kill microorganisms
Cooling Tower
20
Sulphuric acid
To maintain pH (To reduce Alakalinity of water)
Cooling Tower
21
Chlorine Granuals
Bacteria killing
Cooling Tower
22
Zinc base chemical
To prevent corrosion of Copper base alloy
Cooling Tower
23
Oxidising Biocide (Chlorine activator)
Controls biofouling in heat exchangers like Condensers, oil coolers)
Cooling Tower


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