Reuse of alum sludge for reducing flocculant addition in water treatment plants

• Autorzy: Scalize Paulo S. , Souza Leonora M. D. , Albuquerque Antonio

Identyfikatory

DOI

10.5277/epe190105

• Języki publikacji: EN

Abstrakty

EN

The recycling of water treatment residues (WTR) inside drinking water treatment plants (DWTP) to be a good option for reusing this type of waste, as well as for reducing the costs with its disposal off and with the acquisition of treatment chemicals. Therefore, a WTR was reused for auxiliary of the coagulation-flocculation processes for reducing the use of aluminium sulfate (coagulant) in a DWTP. Three series of experiments have been conducted involving three water samples with different turbidity and colour, different WTR samples with different total suspended solids (TSS) concentrations and different aluminium sulfate concentrations. The results showed that WTR can efficiently be used for the removal of turbidity between 21 NTU and 218 NTU and colour between 194 HU and 1509 HU for TSS concentration between 1635 mg/dm³ and 5420 mg/dm³, with better results in the range between 1635 mg/dm³ and 2678 mg/dm³. For higher TSS concentrations, the removal of both parameters decrease because there are excess of organics released to water, which demands the use of more coagulant.

Słowa kluczowe

EN

aluminum sulfate; chemicals removal; water treatment; coagulation; flocculation; potable water; sulfur compounds

PL

siarczan glinu; usuwanie chemikaliów; uzdatnianie wody; koagulacja; flokulacja; woda pitna; związki siarki

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2019
• Tom: Vol. 45, nr 1
• Strony: 57--70
• Opis fizyczny: Bibliogr. 28 poz., tab., rys.

Twórcy

autor

Scalize Paulo S.

• School of Civil and Environmental, University Federal of Goiás

autor

Souza Leonora M. D.

• School of Civil and Environmental, University Federal of Goiás

autor

Albuquerque Antonio

• University of Beira Interior

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).