How can watercress can be used in contaminated water in large scale
There are a few ways that watercress can be used in contaminated water at a large scale:
1. Phytoremediation: Watercress can be used as a plant in a phytoremediation process, where it absorbs contaminants from the water and helps to clean it. This process involves growing watercress in contaminated water, allowing the plant to absorb pollutants such as heavy metals and chemicals, and then harvesting and disposing of the contaminated plant material.
2. Constructed wetlands: Watercress can be grown in constructed wetlands, where it helps to filter and clean contaminated water as it passes through the wetland. The watercress absorbs contaminants, while other plants and microorganisms in the wetland help to break down pollutants and improve water quality.
3. Biofiltration: Watercress can also be used in biofiltration systems, where contaminated water is passed through a bed of watercress to remove pollutants. The watercress absorbs contaminants such as nitrates and phosphates, improving water quality as it passes through the system.
Overall, watercress can be a valuable tool in cleaning contaminated water at a large scale, and can be used in a variety of ways to help improve water quality.