LIME REMOVAL

Removing lime from wastewater can be done through several methods. Here are some ways to remove lime from wastewater:

1. Chemical precipitation: Chemical precipitation involves the addition of a chemical such as alum, ferric chloride or lime (calcium hydroxide) to the wastewater. This causes the lime to form solid particles which can then be removed by settling or filtration.

2. pH adjustment: Lime is usually added to wastewater to increase its pH. To remove lime, the pH can be adjusted back to the acidic range by the addition of an acidic compound such as sulfuric acid. This causes the lime to form solid particles which can then be removed by settling or filtration.

3. Membrane filtration: Membrane filtration involves the use of a membrane to filter out the lime particles. This method can be effective but is often more expensive than chemical precipitation.

4. Reverse osmosis: Reverse osmosis involves passing the wastewater through a membrane at high pressure to remove the lime particles. This method can be very effective but is also very expensive.

5. Electrocoagulation: Electrocoagulation involves the use of an electric current to destabilize and coagulate the lime particles, which can then be removed by settling or filtration.

The choice of method for removing lime from wastewater will depend on various factors, including the amount of lime present, the desired level of removal, and the cost and availability of equipment and chemicals. It is recommended to consult with a wastewater treatment professional to determine the most appropriate method for a particular situation.