People are beginning to understand sustainable natural solutions in the last several decades to reduce floods and temperature in metropolitan areas, which have been rising owing to many factors like urbanisation and climate change.The population of cities has been growing as a result of fast urbanisation, which has also caused an increase in buildings and other man-made structures, which has contributed to an increase in urban heat. Recently, multifunctional walls and roofs have gained popularity as a means of combating urban heat and flood mitigation. Grey water is regarded as one type of wastewater and is the waste water produced by showers, kitchen sinks, and washing machines in residential, commercial, and industrial settings. Untreated wastewater discharge into the ecosystem has many negative repercussions, and grey water treatment is on the rise. The creation, analysis, and optimization of a model are the main topics of this study in order to enhance the functioning of a multifunctional vegetated wall.Incomin
