A case study on the automatic ozone dose control system based on the ozone decay rate in a full-scale advanced water treatment plant

Autor:	Jei-cheol Jeon, Yonkyu Chung, Kyung-Hyuk Lee, Tae-Mun Hwang, Soonbuhm Kwon, Chang-Hyun Jo
Rok vydání:	2011
Předmět:	Granular activated carbon Ozone Environmental engineering Full scale Ocean Engineering High ozone Pollution chemistry.chemical_compound chemistry Water treatment Effluent Control methods Water Science and Technology Contactor
Zdroj:	Desalination and Water Treatment. 33:337-350
ISSN:	1944-3986 1944-3994
DOI:	10.5004/dwt.2011.2662
Popis:	Recently, a growing concern about algae-origin taste and odor in drinking water made it possible to introduce ozone and granular activated carbon (GAC) processes to large-capacity (more than 300,000 m3/d) water treatment plants in the Han River area in South Korea. Especially, concerning the ozone process, the ozone residual of ozone contactor effluent may affect on the biological destabilization, poor physical properties of the following GAC process and operators’ health due to high ozone gas concentration in GAC contactor. Therefore, maintaining an optimal ozone dose based on the ozone demand is essential to the operation of the ozone process. The Koyang Advanced Water Treatment Plant (KAWTP) has been utilizing a new type of ozone control method since July 2009, which automatically calculates required ozone dosed based on the instantaneous ozone demand (ID) and the ozone decay rate constant (Kc ). The ID and the first-order Kc values are calculated based on the measured dissolved-ozone concentrations fr...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::de556ef868b43329dbd24b9371e93c3f https://doi.org/10.5004/dwt.2011.2662 Zobrazit plný text záznamu