Which of the following is a common treatment method for removing contaminants from water?

The choice that includes activated carbon filtration, reverse osmosis, and chemical precipitation represents a suite of effective treatment methods for removing contaminants from water.

Activated carbon filtration is highly effective for removing chlorine, sediment, volatile organic compounds (VOCs), and other impurities based on adsorption principles. It works by providing a large surface area that interacts with contaminants, trapping them in the carbon and purifying the water.

Reverse osmosis is another powerful method that utilizes a semipermeable membrane to separate contaminants from water. This process can remove a wide array of dissolved solids, including salts, heavy metals, and other harmful substances, resulting in high-quality purified water.

Chemical precipitation involves adding specific chemicals to the water, prompting contaminants to form solid particles that can be easily removed from the water. This method is particularly useful for treating heavy metals and other soluble contaminants, contributing significantly to water treatment processes.

Combining these methods optimally addresses various types of water contaminants and is widely utilized in both small and large water treatment systems, making it a common and effective approach.