Changes of sand density impact on water filter backwashing

• Autorzy: Dąbrowski Wojciech , Plata Monika

Identyfikatory

DOI

10.36119/15.2020.1.7

Warianty tytułu

PL

Wpływ zmian gęstości piasku na płukanie filtrów pospiesznych wody

• Języki publikacji: EN

Abstrakty

EN

Media of rapid filters is the subject of abrasion and coverage by biofilm which partially is not removed during backwashing. The empirical tests done for predicting the optimal backwash intensity as a function of water temperature proved that in computing the sand expansion it is necessary to take into consideration not only changes of the grains’ shape but also the density of sand grains as the result of growing biofilm.

PL

Złoża pospiesznych filtrów piaskowych ścierają się i pokrywają z czasem biofilmem, który nie jest w całości usuwany w czasie płukania. Empiryczne testy wykonane w celu doboru optymalnej wielkości intensywności płukania w funkcji temperatury wody płucznej wykazały, że w obliczeniach wielkości ekspansji złoża należy uwzględnić nie tylko zmianę w czasie eksploatacji kształtu ziaren ale również ich gęstości, która wynika z obrastania ich biofilmem.

Słowa kluczowe

EN

filter backwashing; sand; biofilm; backwash intensity

PL

płukanie filtrów; piasek; biofilm; intensywność płukania

• Wydawca: Ośrodek Informacji "Technika instalacyjna w budownictwie''
• Czasopismo: Instal
• Rocznik: 2020
• Tom: nr 1
• Strony: 45--48
• Opis fizyczny: Bibliogr. 51 poz., rys., tab., wzory

Twórcy

autor

Dąbrowski Wojciech

• Politechnika Krakowska

autor

Plata Monika

• San Projekt

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).