کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7075760 | 1459969 | 2014 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improving dewaterability of waste activated sludge by combined conditioning with zero-valent iron and hydrogen peroxide
ترجمه فارسی عنوان
بهبود آلودگی لجن فعال شده توسط مخلوط با تهویه مطبوع با آهن صفر واست و پراکسید هیدروژن
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کلمات کلیدی
لجن فعال زباله، آبگیری آب اکسیژنه، آهن خالص، واکنش مشابه فنتون،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
Improvement of sludge dewaterability is crucial for reducing the costs of sludge disposal in wastewater treatment plants. This study presents a novel method based on combined conditioning with zero-valent iron (ZVI) and hydrogen peroxide (HP) at pH 2.0 to improve dewaterability of a full-scale waste activated sludge (WAS). The combination of ZVI (0-750Â mg/L) and HP (0-750Â mg/L) at pH 2.0 substantially improved the WAS dewaterability due to Fenton-like reactions. The highest improvement in WAS dewaterability was attained at 500Â mg ZVI/L and 250Â mg HP/L, when the capillary suction time of the WAS was reduced by approximately 50%. Particle size distribution indicated that the sludge flocs were decomposed after conditioning. Economic analysis showed that combined conditioning with ZVI and HP was a more economically favorable method for improving WAS dewaterability than the classical Fenton reaction based method initiated by ferrous salts and HP.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 174, December 2014, Pages 103-107
Journal: Bioresource Technology - Volume 174, December 2014, Pages 103-107
نویسندگان
Xu Zhou, Qilin Wang, Guangming Jiang, Xiwang Zhang, Zhiguo Yuan,