Simulation Studies on the Interactions of Electron Beam with Wastewater

High energy electron beam irradiation is capable of removing harmful organic compounds from industrial manufacturing, which are hard to be degraded by the conventional wastewater treatment methods. This paper utilizes FLUKA code to evaluate the electron beam-wastewater interaction effects with different energy, space and divergence distributions of the electron beam. With 8 MeV average energy, the electron beam exits from a 0.0127 cm thick titanium window, travels through a 4.3 cm distance in air and through a second 0.0127 cm thick stainless sample container window with 2.43 cm radius, and finally is injected into the wastewater sample container, which has a volume of around 75 cubic cm. The distributions of the electron beam are obtained from the GPT (General Particle Tracer) simulations for the UITF (Upgraded Injector Test Facility) in Jefferson lab. By varying the parameters of the electron beam, the dose distributions through the water, the contributions from the electrons and bremsstrahlung photons are scored and compared. It is found that a spatially uniform electron beam results for the case of the most uniform dose distribution and the electrons are the main source for the dose. In addition, the electron differential fluence through the multiple planes of the has been modelled, which provides the base for the further electron beam requirements study.