Performance of actual and laboratory horizontal roughing filter for turbidity and e.coli removal
Loading...
Date
2017-06
Authors
Wan Muhammad Adib Bin Wan Zuraidi
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Roughing filtration is one of water treatment methods which has been used
widely throughout the world. Roughing filtration has been used as major water
treatment in rural water supply systems because of its advantages that can be
maintained easily, does not need any chemicals, has long operational time and can be
operated and maintained by trained local caretakers. Its effectiveness to remove
turbidity, suspended solids, and coliform organism has been proved by various
researchers whether at laboratory-scale or pilot-scale study. However, performance of
actual roughing filter is still not well understood. Therefore, this present study was
conducted to evaluate the performance of actual-scale roughing filter. In this study, the
removal efficiency of actual-scale which is located at Kg. Sungai Air Simpul, Ijok,
Selama, Perak and laboratory-scale horizontal roughing filter to remove water turbidity
and E.coli concentration were tested and compared. The laboratory roughing filter also
tested using 3 different flow rates in order to determine the effect of applied flow rate
of roughing filter. In addition, adsorption study was conducted to investigate the
adsorption capacity of limestone filter media for turbidity removal. The experimental
results indicate that the performance of actual roughing filter for turbidity and E.coli
concentration were in range with the results obtained from laboratory. This
experimental result also shows that the removal efficiency of roughing filter increase as
the applied flow rates decrease. Meanwhile, results from adsorption study revealed that
Langmuir Isotherm fitted the experimental data better than Freundlich Isotherm for
turbidity adsorption. In Langmuir Isotherm, the maximum adsorption capacity of
Limestone for turbidity was 0.002 NTU/g