Amir Parnian - Assistant Professor, National Salinity Research Center (NSRC), Agricultural Research Education and Extension Organization (AREEO), Yazd, Iran
Amin Parnian - Parnian Sazeh Chehelsotoon Co., Incubation Center for Technology Units, Shahid Chamran University of Ahvaz, Ahvaz, Iran
Hadi Pirasteh-Anosheh - Assistant Professors, National Salinity Research Center, Agricultural Research, Education and Extension Organization, Yazd, Iran
Hossein Parvizi - Assistant Professors, National Salinity Research Center, Agricultural Research, Education and Extension Organization, Yazd, Iran

In marshlands and coastal areas, wastewater usually feeds saline waterbodies, which leads to being non-usable for crop cultivation in haloculturesystems. Phytoremediation is a new scientific approach to clean contaminatedwaters, but it demands large areas. Further, vertical agriculture is a new methodto compact plant cultures. The aim of this study was the investigation of the ideaof wastewater phytoremediation by a vertical agriculture method called verticalwastewater phytoremediation (VWP). In this study, 20 Vetiver grass planted ina hydroponic vertical agriculture system. Afterward, to estimate the remediationability of the VWP, wastewater flows into the system by four different flow rates,60, 80, 100, and 160 l day-1. Results showed a reduction in BOD5 and NO3-concentrations and increase of EC and DO in the outlet. Maximum and minimumBOD5 reduction percentage (78.47% and 67.36%) occurred in flow rates 60 and160 l day-1 respectively. Also, the maximum and the minimum NO3- removalpercentage (90.53% and 36.41%) occurred in the same flow rates. With theincrease of wastewater flow rate, phytoremediation performance decreased, butthe performance of VWP with Vetiver grass was efficient enough to wastewaterremediation.

Haloculture, Vertical wastewater phytoremediation; Vertical agriculture