Upgrading of An Existing Compact Water Treatment Plant

Abd Elmonem, Kh.S.*, El-Nadi, M.E.H., Abd Elmoemen, M.M, Hussien, H.M.

Page No.1-14

Compact Water treatment plants was established to solve the problem of water supply in villages as a quick solution, but with the increase in population and poor maintenance of compact units, the actual production capacity became not equal to the capacity of its design, so the tendency was to remove these units and build new water treatment plants with a high cost and thus do not achieve any benefit from the current units.

This study aims to increase the capacity of El-Warrak compact water treatment plant by developing its hydraulic capacity and maximize its productivity without affect the produced water quality or need more land with minimum possible modifications, by comparison between three types of sedimentation units (tube settler, super Accelerator, super precipitator) followed by three types of filtration units (sand filter, Dual media filter, Triple media filter), After application The removal efficiency of them were within the permissible limits which allows there application.

The technical comparison between the six proposals resulted that the best solution was the proposal which is converting only four plate settlers to tube settlers and & eight rapid sand filters to triple media filters that achieves increasing the capacity of sedimentation unit from 2400 m3/day to 10324.8 m3/day it means increasing the capacity by 4.3 times the old one,

The total cost of vertically upgrading the existing water treatment plant is 28,800,000 L.E while the total cost of removing existing plant and building new one will be 103,850,000 this means that vertical upgrading for the existing plant saves about 72.26 % of the total cost of horizontal upgrading the existing water treatment plant.

Keywords: Water Treatment, Sedimentation, Filtration, Compact units