Ice Pigging for drinking water pipe cleaning
Ice Pigging is based on harnessing the complex properties and unparalleled benefits of thick ice. Semi-solid ice can be applied uniquely because it is both pumpable like a liquid, but also takes on properties of a solid when a ‘pig’ of ice is formed within a pipe. The ice is pumped into the pipe and forced by pressure to remove sediment and built-up deposits to leave the pipe clear and obstruction free. As a relatively quick process, it leaves pipe walls undamaged.
Why clean pipes?
Over time, drinking water pipes can suffer from problems that can have an impact on water quality and cause consumer complaints. Ice Pigging is proven to effectively remove both sediment and biofilm without causing damage to the pipe wall.
Iron and manganese
Iron and manganese can accumulate as a result of poor filtering at the water treatment stage, or as a result of deterioration of the drinking water network. Sediments can significantly affect the appearance of drinking water and can easily appear at customer taps when only the slightest changes to the operation of the system occur.
Biofilms are biological growths on the inside surface of the pipe. Typically, water with high manganese or aluminium content, or in any network where chlorination is not allowed can be susceptible to biofilm growth. In networks carrying water treated with chlorine or chloramines, reactions with biofilms can lead to the creation of TriHaloMethanes (THMs) which in turn have been associated with public health risks.