Greywater Disinfection by SolarReactor in Baghdad

Abstract

Solar disinfection is an efficient method for greywater treatment where it is exposed to solar radiation to inactivate pathogenic organisms.Solar disinfection is affected by numerous variables which  include the wavelengths of solar radiation, water temperature, turbidity, and reactor selection. A Laborotary model of solar reacter has been designed and constructed at Environmental Hydraulic in Mustansiriya University/College of Engineering. The model consists of four independent Acrylic reactors of 100mm diameter and 1300mm length, filled with different materials for filtration and disinfection including (sand, Black granite, Granular activated carbón, and Mixture of granular activated carbonated black granite).

Thesolardisinfectiontreatmentwas experimented bya8 L multistage contiuous flow with recycling ratio 4 .The treatmentprocesses  still incomplete wherethe tertiarytreatmentisnotapplied in many treatment plants in Iraq.Thissituationcouldcompromisetheplannedwastewater reuseregardingespecially themicrobialquality.

KeyWord: Solar Energy, Disinfection, Greywater, Multi Stage reactor