کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
629102 1455500 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Application of an ozonation–adsorption–ultrafiltration system for surface water treatment
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Application of an ozonation–adsorption–ultrafiltration system for surface water treatment
چکیده انگلیسی

Investigations are presented on the effect of the preliminary ozonation on ultrafiltration (UF) and powdered activated carbon (PAC) /UF process performance, especially on permeate flux decline and the effectiveness of model organics removal. Flat membranes from regenerated cellulose were used. A model solution was prepared as a mixture of humic acids and phenol. PAC dosage was equal to 100 mg/l−1. The ozone dosages were in the range of 1–3 mg O3 l−1 (0.2–0.6 mg O3/mg TOC). It was found that the most advantageous configuration was preliminary ozonation with an ozone dosage of 0.4 mgO3/mg TOC–UF. The permeate flux reached a value equal to the pure water flux value. Moreover, a very high effectiveness of model organics removal was obtained: TOC was reduced by about 96% and UV254 absorbance was removed completely. When PAC was added to the feed containing humic acids without ozonation, a drop in a permeate flux was observed compared to UF. Similarly, the addition of PAC to feed treated with ozone resulted in a significant drop in the permeate flux in comparison with pure water flux, regardless of ozone dosage applied.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 190, Issues 1–3, 15 April 2006, Pages 308-314