Light water is simply ordinary water that does not contain large amounts of deuterium, making it distinct from heavy water. Although this water does contain small numbers of heavy water molecules, it isn’t enough to make any significant changes in its properties.

Light water Hydrogen works well as a neutron moderator because its mass is almost identical to that of a neutron. This means that one collision will significantly reduce the speed of the neutron because of the laws of conservation of energy and momentum. In addition, light water is abundant and fairly inexpensive.

Unfortunately, there is no simple answer for removing radiation from the water. In many cases, a combination of treatment methods, including carbon filtration, ion-exchange water softening, and reverse osmosis, is most effective. High levels of radiation in water may not be treatable.

Purification of Radioactive Water Methods such as boiling, Chlorination (use of household chlorine bleach), and purification tablets remove microorganisms. More rigorous modes of purification are used to rid the water of other wastes including radioactive materials.

Disposal of low-level waste is straightforward and can be undertaken safely almost anywhere. Storage of used fuel is normally under water for at least five years and then often in dry storage. Deep geological disposal is widely agreed to be the best solution for final disposal of the most radioactive waste produced.

Nuclear waste is extremely dangerous because it contains radioactive materials. One idea often suggested is to collect all nuclear waste and put it in sealed containers. Then, goes the idea, we can use rockets to launch these dangerous containers into space and perhaps expel the material toward the sun.