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