Study on the treatment of fluorine-containing wastewater by precipitation-adsorption process

• Autorzy: Li Xiaochang , Lyu Xianjun

Identyfikatory

DOI

10.37190/epe230205

• Języki publikacji: EN

Abstrakty

EN

Fluorine-containing wastewater from the Yuncheng Sewage Treatment Plant in Heze City, Shan-dong Province was treated by coagulation and precipitation with poly aluminum sulfate, and CaO chemical precipitation-activated carbon adsorption, with a view to reducing fluoride ions concentration in the wastewater to below the discharge standard. The results showed that the optimum conditions for the coagulation-sedimentation test of poly aluminum sulfate were as follows: the dosage of poly aluminum sulfate 0.3 g/dm³, initial pH value 4.0, the removal rate of fluoride ion in the fluorine-containing wastewater reached 98.46%, and the concentration of fluoride ion was 0.462 mg/ dm³, which reached the discharge standard (1.5 mg/ dm³); The optimum conditions for the CaO chemical precipitation, and lanthanum loaded activated carbon adsorption method were as follows: the amount of CaO 20 g/ dm³, initial pH of the chemical precipitation test 8.0, the dosage of lanthanum loaded activated carbon 10 g/ dm³, and the initial pH of the adsorption test 6.0. At this time, the removal rate of fluoride ions in the fluorine-containing wastewater reached 95.81%, and the concentration of fluoride ions was 1.26 mg/ dm³, which also met the discharge standard.

Słowa kluczowe

EN

sewage; fluorine; activated carbon; adsorption

PL

ścieki; fluor; węgiel aktywny; adsorpcja

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2023
• Tom: Vol. 49, nr 2
• Strony: 55--73
• Opis fizyczny: Bibliogr. 19 poz., rys., tab.

Twórcy

autor

Li Xiaochang

• College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, China

• https://orcid.org/0009-0005-3891-4566

autor

Lyu Xianjun

• College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, China

• https://orcid.org/0000-0001-6818-6110

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).