Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8208904 | Applied Radiation and Isotopes | 2017 | 6 Pages |
Abstract
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.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Metali Sarkar, Vikas Kumar Sangal, Vijay Kumar Sharma, Jitendra Samantray, Haripada Bhunia, Pramod Kumar Bajpai, Anil Kumar, Anil K. Naithani, Harish Jagat Pant,