Al-Qadisiyah Journal for Engineering Sciences

Pellet Softening Process for the Removal of the Groundwater Hardness; Modelling and Experimentation Modelling and experimental of groundwater shortening by a pellet reactor

Authors

Fatin Abdul_ kareem Ashoor 1
Amer D. Zmat 1
Muthanna H. AlDahhan 2

1 Department of Chemical engineering, University of Al-Qadisiyah, Al-Qadisiyah, Iraq.

2 Multiphase Reactors and Applications Laboratory mReal, Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, Rolla, MO 65409-1230, USA

https://doi.org/10.30772/qjes.v12i3.603
Abstract
A lab scale pellet reactor (PR) was designed and fabricated to carry out extensive investigations on the removal efficiency of the hardness of groundwater.  The groundwater of 2200 – 2600 mg/L hardness was collected from Abdulla Ibnalhassan wells area located at the west desert of Al-Shinafiyah district (70 km to the southwest of Al-Dewaniyah city, Iraq). Both hydrodynamic parameters of the pellet reactor (porosity and fluidized bed height) and the parameters of calcium carbonate crystallization process (calcium carbonate equilibrium, pellet size, and density) were modeled and compared with the experimental results of the lab scale pellet reactor. The comparison showed that fair agreement between modeled and measured results was observed. The removal efficiency of both calcium and magnesium ions were 62.5-99% and 83-99% respectively. The removal efficiency was found to be strongly dependent on pH and the ratio of NaOH solution flow rate to the groundwater flow rate in the pellet reactor.

Keywords

Pellet reactor
Groundwater softening
water hardness removal
Crystillization
Al-Qadisiyah Journal for Engineering Sciences
Volume 12, Issue 3
Summer 2019
Pages 135-143

  • Receive Date 21 June 2023

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