Water Purification Plants

Water treatment plants can use a process called ultrafiltration in addition to or instead of traditional filtration. During ultrafiltration, the water goes through a filter membrane with very small pores. This filter only lets through water and other small molecules (such as salts and tiny, charged molecules). The Role of Plants in air Purification. Plants are used as an efficient cleaning system for the environment in a process known as “Phytoremediation”, which can be done via various techniques in which plants clear the environment from pollutants (Figure 2) (Pilon-Smits 2005).