Mitigating Water Pollution: The Synergy of Phytoremediation and Constructed Wetland Technology

The confluence of water pollution and the diminishing water supply significantly strain the environment. This water quality issue is exacerbated by rapid urbanization, intensified agricultural practices, and the unregulated discharge of geothermal water, which contribute to the escalating release of wastewater into the environment. The increasing levels of wastewater significantly threaten the environment and human health. Considering the increasing demand for water in urban regions and the growing environmental and health concerns associated with wastewater generation, developing effective wastewater treatment strategies has become imperative. Numerous techniques are available for wastewater treatment, including adsorption, bioremediation, filtration, coagulation, and phytoremediation. Among these approaches, phytoremediation is a nature-based, feasible, easy-to-use, and efficient approach. It leverages the capabilities of macrophytes to remove pollutants from the water by absorbing, sequestering, and degrading pollutants, thus substantially mitigating the environmental impact of wastewater. Moreover, no sludge production in phytoremediation enhances its sustainability with respect to other approaches. The macrophytes can be employed in water remediation through different systems, such as constructed wetlands, wild macrophyte planting systems, and floating treatment wetlands. Constructed wetlands have extensive application in the remediation of diverse contaminants found in wastewater, including heavy metals, explosives, petroleum hydrocarbons, dye effluents, domestic and industrial wastewater, radionuclides, and pesticides present in the wastewater. Acquiring comprehensive insight into the mechanisms behind phytoremediation and constructed wetland technology offers a viable and easily implementable solution for addressing the escalating wastewater problem.