کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8208904 1532067 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Radiotracer investigation and modeling of an activated sludge system in a pulp and paper industry
ترجمه فارسی عنوان
بررسی و مدل سازی یک سیستم لجن فعال در صنعت کاغذ و کاغذ
کلمات کلیدی
فرآیند لجن فعال، مخزن هوادهی، تمیزکننده ثانویه، رادیوتراپی، یید 131، توزیع زمان اقامت، میانگین مدت زمان اقامت هیدرولیکی، دور زدن حجم مرده، مخازن در سری با مدل پشت مایع، مدل پراکندگی محوری
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم تشعشع
چکیده انگلیسی
A radiotracer investigation was carried out in an activated sludge process (ASP) system of an effluent treatment plant in a pulp and paper industry. The system consists of an aeration tank and a secondary clarifier connected in series. The primary objective of the investigation was to measure mean hydraulic retention times (MHRTs) of wastewater and investigate the hydraulic performance of the ASP. Residence time distributions (RTD) of the wastewater were measured in an aeration tank and a secondary clarifier of the system using Iodine-131 as a radiotracer. The measured RTD data was treated and MHRTs were estimated. No bypassing was found to exist in the aeration tank and the secondary clarifier. However, the dead volume in the aeration tank and the secondary clarifier was found and estimated to be 2.34% and 4.6%, respectively. The treated curves were further simulated using suitable hydraulically representative mathematical models and detailed flow patterns in the aeration tank and the secondary clarifier were deciphered.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Radiation and Isotopes - Volume 130, December 2017, Pages 270-275
نویسندگان
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