Characteristics of Biological Activated Carbon Filtration and Biological Filtration in Drinking Water Treatment

Autor:	Ishimaru Kenji, Tadahiro Yoshida, Nobuki Hayase, Yoshihisa Kitaoka, Yakou Yasuko, Kenjiro Yasuno
Rok vydání:	1998
Předmět:	Chromatography food and beverages Biodegradation law.invention Filter (aquarium) Trihalomethane chemistry.chemical_compound Adsorption chemistry law Biological filter Water treatment Biological activated carbon Filtration
Zdroj:	Journal of Japan Society on Water Environment. 21:507-512
ISSN:	1881-3690 0916-8958
DOI:	10.2965/jswe.21.507
Popis:	In drinking water treatment process including ozonation and biological activated carbon (BAC) filtration, the treatment capability of BAC filter was compared with that of biological filter with a carrier having no adsorption capacity, to clarify the effect of adsorption and biodegradation activity on the mechanism in BAC filtration. Trihalomethane formation potential (THMFP) and E260 were highly removed by the combination of ozonation and BAC filtration. On the other hand, the biological filter had generally lower removal potentiality compared with BAC filter. However it appeared that higher removal potentiality close to that of BAC filter was achieved by the combination of ozonation and biological filter at high water temperature. Number of bacteria on BAC was little different from that on the medium for biological filter.The removal potentiality of THMFP and E260 in the combination of ozonation and BAC filtration was little different from that in BAC filtration without ozonation. However the adsorption load for BAC was decreased by oxidation and improvement of biodegradability at preozonation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::103550081a444a385af4c6ff6fe46302 https://doi.org/10.2965/jswe.21.507 Zobrazit plný text záznamu