Modelling of corrosion rate in the drinking water distribution network using Design Expert 13 software

Abstract

This study focused on the modelling of corrosion rate of the water distribution network of Patna, (Bihar), India using Design Expert 13 software. A total of nine variables, including pH, temperature, total dissolved solid (TDS), alkalinity, calcium hardness, chloride, sulphate, dissolved oxygen (DO), and time, were considered for modelling. The physicochemical parameters were determined through regular monitoring of water samples. The corrosion rate was determined by direct monitoring of water distribution pipes using adjustments of seven GI coupons for 45, 90, 135, 180, 225, 270, and 315 days. Modelling was performed using the low level and high-level experimental range for pH, temperature, TDS, alkalinity,

Seamless integration of sewer system topology and tree location data: An algorithm to diagnose the potential impact of tree roots on pipes and propose rearrangement solutions

“…In particular, they recommend checking pipes in the proximity of trees and evaluating the possibility of tree rearrangement, although a more in-depth analysis is needed. According to their work, the risk of pipe failure incidents concerning tree roots increases over time and can be exacerbated on old or corroded pipes [10] . Sydney Water [11] agrees with this statement, justifying that the roots of trees planted in the wrong place can find their way into wastewater pipes, causing about 80% of all dry weather sewage overflows and seriously affecting public health and the environment.…”