Hydrated Lime powder Manufacturer Dealers suppliers wholesalers in Chennai
Manufacturer of Hydrated lime (calcium hydroxide) is widely used in water treatment to raise pH, neutralize acidity, soften water by removing hardness minerals, and help precipitate impurities like heavy metals and phosphates, improving clarity, taste, and safety by making water less corrosive and killing some microorganisms. It's a cost-effective alkaline agent that aids in flocculation (clumping of particles for easier removal) and sludge conditioning, making it essential for both drinking water and wastewater purification.
Key Functions in Water Treatment:
- pH Adjustment:Neutralizes acidic water (low pH) by releasing hydroxide ions, making it less corrosive and suitable for distribution.
- Softening:Removes temporary hardness (calcium/magnesium bicarbonates) by precipitating them as calcium carbonate and magnesium hydroxide, a process called lime softening.
- Impurity Removal:Helps precipitate heavy metals, phosphates, and other contaminants, aiding in their removal.
- Disinfection:At higher pH levels, it can kill bacteria and germs, and its flocculating properties help trap pathogens.
- Coagulation Aid:Used before coagulation to optimize pH, making other coagulants more effective in removing turbidity (cloudiness).
- Sludge Conditioning:Stabilizes and conditions sludge in wastewater treatment.
How it Works:
When added to water, hydrated lime (
𝐶𝑎(𝑂𝐻)2Ca(OH)2cap C a open paren cap O cap H close paren sub 2
) dissolves and provides hydroxide ions (
𝑂𝐻−OH−cap O cap H raised to the negative power
) and calcium ions (
𝐶𝑎2+Ca2+cap C a raised to the 2 plus power
). These ions react with acids and hardness minerals, forming insoluble calcium carbonate (
𝐶𝑎𝐶𝑂3CaCO3cap C a cap C cap O sub 3
) and magnesium hydroxide (
𝑀𝑔(𝑂𝐻)2Mg(OH)2cap M g of open paren cap O cap H close paren sub 2
), which settle out, clarifying the water.
Benefits:
- Cost-effective and readily available.
- Safer to handle than some other alkaline chemicals like caustic soda.
- Improves water taste, smell, and color by removing suspended matter.