Simulated Modelling, Design, and Performance Evaluation of a Pilot-Scale Trickling Filter System for Removal of Carbonaceous Pollutants from Domestic Wastewater

Water

Shama Sehar¹  Devendra P. Saroj²  Safia Ahmed³  Abdul Rehman⁴  Muhammad Anees⁴  Saleh S. Alhewairini⁵ 

[1] Department of Biology, College of Science, University of Bahrain, Sakhir P.O. Box 32038, Bahrain;Department of Civil and Environmental Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Surrey GU2 7XH, UK;Department of Microbiology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan;Department of Microbiology, Kohat University of Science & Technology (KUST), Kohat 26000, Khyber Pakhtunkhwa, Pakistan;Department of Plant Production and Protection, College of Agriculture and Veterinary Medicine, Qassim University, Buraidah 51452, Qassim, Saudi Arabia;

关键词: pilot-scale trickling filter system;    carbonaceous pollutants;    zero-order kinetic model;    fecal coliforms;    biological wastewater treatment;   

DOI  :  10.3390/w13223210

来源: DOAJ

【 摘 要 】

The aim of the present study is to assess the wastewater treatment efficiency of a low-cost pilot-scale trickling filter (TF) system under a prevailing temperature range of 12 °C–38 °C. Operational data (both influent and effluent) for 330 days were collected from the pilot-scale TF for various physicochemical and biological parameters. Average percentage reductions were observed in the ranges of 52–72, 51–73, 61–81, and 74–89% for BOD₅, COD, TDS, and TSS, respectively, for the whole year except the winter season, where a 74–88% reduction was observed only for TSS, whilst BOD₅, COD, and TDS demonstrated reductions in the ranges of 13–50, 13–49, and 23–61%, respectively. Furthermore, reductions of about 43–55% and 57–86% in fecal coliform count were observed after the 1st and 6th day of treatment, respectively, throughout study period. Moreover, the pilot-scale TF model was based on zero-order kinetics calibrated at 20 °C using experimental BOD₅ data obtained in the month of October to calculate the k₂₀ value, which was further validated to determine the k_t value for each BOD₅ experimental setup. The model resulted in more accurate measurements of the pilot-scale TF and could help to improve its ability to handle different types of wastewater in the future.

【 授权许可】

Unknown