TREATMENT OF GREY WATER USING HORIZONTAL FLOW CONSTRUCTED WETLAND – A REVIEW

Abstract: Constructed wetlands are increasingly being employed for wastewater treatment. Which is the last of defense against water pollution, and the need of quality the degree to which the pollution has actually impacted the environment has become paramount. Therefore, there is a need to develop tools for determining the environmental impact of pollutants and monitoring the ecological recovery of the site after remediation. To evaluate the constructed wetland technology, a project was implemented, using different types of constructed wetland system, for the wastewater treatment to evaluate relative advantages and disadvantages of water quality these types of systems, analyze their behaviour and efficiency in water environment renovation, develop, evaluate and improve basic design and operation criteria, and transfer technology. Constructed wetlands represent an alternative for sewage treatment plants based on various technologies because they are equally or more effective at removing pollutants than those used during the treatment of other types of wastewater, becoming important to manage or process wastewater where constructed wetlands provide predictable water quality benefits when properly designed and maintained. Constructed wetland carries filtration process to remove the contaminants from the wastewater. This report will summarize the state of technology, and profile a site where constructed wetlands have been implanted for treatment application other than municipal wastewater. In this project, we will treat the grey water i.e. from washbasin, washing machine, bathroom, etc except the water discharged from the water closet.

Keywords: Constructed Wetlands (CW), Total Suspended Solids (TSS), Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand.