Cost Savings in the Ozone Treatment of Paper Mill Effluents Achieved By a Closed-Loop Ozone Control System

Autor:	Hans-Jüergen Öeller, Svenja Bierbaum
Rok vydání:	2009
Předmět:	Engineering Environmental Engineering Ozone Waste management business.industry Chemical oxygen demand Paper mill chemistry.chemical_compound Volume (thermodynamics) chemistry Control system Environmental Chemistry Sewage treatment business Effluent Operating cost
Zdroj:	Ozone: Science & Engineering. 31:454-460
ISSN:	1547-6545 0191-9512
DOI:	10.1080/01919510903323141
Popis:	Control strategies were created to reduce the operating costs of ozone stages of effluent treatment plants in paper mills as well as to improve the quality of the effluent. Biologically treated effluents from five mills were subjected to laboratory and pilot tests. All COD target values could be reached and maintained with SAC-based control strategies. Disturbing events were compensated with a deviation of only 2% within maximum 3.1 volume exchanges, depending on the kind of event. The SAC (spectral absorption coefficient) was found to be highly suitable for controlling the ozone dosage. In a SME paper mill, 20% of the operating costs of an ozone plant can be saved. The return on investment for such a system is thus about 8 months.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e64a13e4bc5c35b4933f22be17d4d8c5 https://doi.org/10.1080/01919510903323141 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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