abdalkazem neisi department of environmental health engineering and center for environmental research technologies, ahvaz jundishapur university of medical sciences, ahvaz, ir iran kaream kotienne cheraghi environmental engineering (water and sewer), ahvaz water and wastewater department, ahvaz, ir iran amirhussam hasssni department of environmental engineering, islamic azad university, tehran research & sciences branch, ahvaz, ir iran amirhussam hasssni department of environmental engineering, islamic azad university, tehran research & sciences branch, ahvaz, ir iran