Every human activity, both domestic, industrial and agricultural, produces waste liquids containing organic and inorganic substances that are potentially harmful to the environment. For this reason, the anti-pollution regulations require purification treatment before the waste water is dispersed in waterways or land, in order to avoid contamination of surfaces, aquifers, rivers and seas.
Where there are no sewage drains, drain cleaning equipments are used to perform two main operations:
- priming of mud and waste water;
- emptying pipelines.
PTC produces a wide range of machinery dedicated to the so-called urban cleaning, also applicable for priming wastewater and mud in the event of flooding or for cleaning septic tanks.
Among these there are also machines dedicated to cleaning chemical toilets and emptying the toilets of trains.
In trains, where it is not possible to connect a system of drainage pipes, the toilets are equipped with tanks that accumulate waste water which, periodically, must be emptied.
Public passenger transport, however, must ensure punctuality and comfort: for this reason, the disposal of waste water from the tanks of the toilets on board must be done quickly and without leaving any trace.
The drain cleaning operations are carried out by qualified personnel using a specific equipment called priming unit: these are systems that can prime or transfer any type of material – liquid, wet, granular, dust – and can be fixed, mobile or trolley-mounted, designed to facilitate purge operations and reduce deleterious downtime for the transport sector.