کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7482725 | 1485262 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chemical treatment response to variations in non-point pollution water quality: Results of a factorial design experiment
ترجمه فارسی عنوان
پاسخ شیمیایی واکنش به تغییرات در کیفیت آب آلودگی بدون نقطه: نتایج یک آزمایش طراحی فاکتوریل
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کلمات کلیدی
طراحی فاکتور، بار تخلیه انعقاد، لخته، مواد هومیک،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Chemical treatment of non-point derived pollution often suffers from undesirable oscillations in purification efficiency due to variations in runoff water quality. This study examined the response of the chemical purification process to variations in water quality using a 2k factorial design for runoff water rich in humic substances. The four k factors evaluated and the levels applied were: organic matter as dissolved organic carbon (DOC) (20-70Â mg/L), suspended solids (SS) (10-60Â mg/L), initial water pH (4.5-7), and applied coagulant dosage (ferric sulphate) (35-100Â mg/L). Indicators of purification efficiency were residual concentration of DOC, SS and total phosphorus (tot-P). Analysis of variance and factor effect calculations showed that the initial DOC concentration in raw water samples and its interactions with the coagulant dosage applied exerted the most significant influence on the chemical purification process, substantially affecting the residual concentration of DOC, SS and tot-P. The variations applied to the factors SS and pH only slightly affected purification efficiency. The results can be used in the design of purification systems with high organic matter load variation, e.g. peat extraction runoff.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Management - Volume 150, 1 March 2015, Pages 164-172
Journal: Journal of Environmental Management - Volume 150, 1 March 2015, Pages 164-172
نویسندگان
Elisangela Heiderscheidt, Tiina Leiviskä, Bjørn Kløve,