| Title |
Disinfection of Total Coliforms in Sewage Treatment Effluent using Electron Beam |
| Authors |
김유리 ( Yu Ri Kim ) ; 한범수 ( Bum Soo Han ) ; 김진규 ( Jin Kyu Kim ) ; 강호 ( Ho Kang ) |
| Keywords |
Electron beam; Disinfection; Total coliforms; Total colonies; Secondary sewage treatment effluent; Dose |
| Abstract |
The use of electron beam irradiation was investigated to disinfect total coliforms in the secondary sewage treatment effluent. Unchlorinated secondary effluent was irradiated at different dose of 0.2~1.0 kGy by 1 MeV, ELV-4 Model electron beam accelerator. It is interesting to note that a 100% reduction in total coliforms and total colonies were achieved until a dose of approximately 0.8 kGy. Even at low dose of 0.2 kGy, the total coliforms and total colonies were successfully inactivated to the level of satisfying the new effluent discharge guideline. Besides disinfection of total coliforms, approximately a 50% removal in biochemical oxygen demand was pronounced at a dose of 0.2 kGy. More than 20% removal in suspended solids and turbidity was also observed at a dose of 1.0 kGy. The application of electron beam irradiation appeared to be one of options to reuse sewage treatment effluent as agricultural or industrial water. |