Filtration sand and gravel are used in a purification of potable water and a sewage treatment. The material used for these purposes is specifically graded pure quartz gravel. The two deposits of filtration gravel hitherto documented in Poland are not exploited at present (Nowy Dwór and Panoszów deposits). Their anticipated economic resources are equal 273 thousand tonnes (Table 1).
The whole domestic demand for filtration sand and gravel is covered with material recovered in processing natural aggregates from deposits situated in the Opolskie Voivodeship, foundry sands from the Opoczno area and glass sands from the vicinities of Tomaszów Mazowiecki.
Total amount of filtration gravel and sands recovered in 2016 from natural aggregates deposits (Opolskie Voivodeship) amounted to 4,909.97 tonnes (including 2,256.84 tonnes of sands and 2,653.13 tonnes of gravel), from foundry sands deposits (Opoczno area) to 58,080 tonnes and from glass sands (the vicinities of Tomaszów Mazowiecki) to 22,220 tonnes of filtration gravel and 6,910 tonnes of special gravel.
Prepared by: Agnieszka Malon