Combined coagulation and disinfection efficiencies of Mangifera indica, Carica papaya and solar disinfection on synthetic agro - waste water

Solar disinfection (SODIS) proves to be both economical and eco-friendly technique particularly in rural areas in waste water treatment. Natural coagulants applications have been posed in many evaluation assays through many years owing to the difficulties raised by usage of chemical coagulants. It is indispensable to optimize process variables such as turbidity and coliforms counts accuracy to raise the efficiency of coagulation and disinfection operations via employing Mangifera indica and Carica papaya. In this study, an investigation on the combined coagulation and disinfection efficiencies of M. indica and C. papaya as well as solar disinfection on synthetic waste water was conducted using turbidity and membrane filtration techniques. The results revealed that the removal efficiency for turbidity was culminated up to a higher percentage by incorporation of M. indica and C. papaya seeds at lower dosages of coagulant about 0.1 – 1 mg/L in combination with SODIS for about 6 hours in comparison to the control set up. Also, the highest efficiency of solar disinfection system possessed to fell the sunlight exposure period time by up to 6 h with 100 % removal of coliforms at different plastic capacities (0.75 – 1.5 L). Therefore, the M. indica and C. papaya seeds powder as natural coagulant supported by solar disinfection composed a combined or integrated practice which can be utilized in rural areas to turbid water treatment operations.