Which type of slurry commonly includes lime?

Lime is often used in the treatment of wastewater, particularly as a stabilizing agent for solids. A water slurry is typically a mixture that combines lime with water, allowing the lime to effectively react with various contaminants in the wastewater. This combination is utilized for several purposes, such as adjusting the pH of the wastewater, aiding in the precipitation of certain contaminants, and providing a way to stabilize sludge for easier handling and disposal.

In contrast, while calcium is a key component of lime, identifying a slurry specifically as "calcium slurry" can be misleading as it does not encapsulate the critical role of water in the mixture. Similarly, oil slurry refers to mixtures primarily involving oil, which would not involve lime as a common ingredient. Lastly, an acidic slurry would contain acidic substances and would not generally serve the purpose of including lime, which is alkaline and used to neutralize acidities in wastewater treatment processes. Thus, the correct choice reflects the typical composition and function of these slurries in wastewater treatment.