Since 2006, SUEZ has joined forces with SEAAL (Algiers water and sewerage services supplier) to offer Algiers, a city that until now had only enjoyed intermittent water distribution, access to drinking water 24 hours a day, 7 days a week. A true challenge in this particularly arid region, with critical water resources and fast-growing urbanisation. It was in this challenging scenario that in 2016 SEAAL decided to purchase AQUADVANCED® Water networks, a real-time software solution dedicated to water network performance management and the preservation of water resources. A successful proposal.

 

Objective 1: to reduce water losses

To achieve this, the teams of SEAAL manage non-billable water (NBW), including physical losses (visible and invisible leaks, overflows) and commercial losses (illegal connections, old meters, billing and recovery errors, etc.). With the support of the AQUADVANCED® Water networks solution, leak detection becomes reactive through real-time flow monitoring, bringing water leaks "under control". Operators can better identify, locate and react within 24-48 hours. The results? A visible contribution to improving network performance from 54.7% in 2017 to 57.8% today, saving nearly 13 million m3 of water!
 
 
 

Objective 2: to optimise pressure management

This is the second function of AQUADVANCED® Water networks , the use of data from the 200 pressure sensors installed on the pipelines of Algiers to follow the 138 stages of regulated pressure of the city. The principle: if the pressure is too high, resulting in increased water losses, the teams optimise the 192 control valves to "break" the excessive pressure. Until 2017, these valves were checked only once a year: an expensive systematic approach replaced by a calculation module called "reactive optimization": according to the Minimum Pressure Peak and after comparing a target value, the system can detect anomalies if the pressure is too high or too low and act upon it quickly. 
 
 
 

Goal 3: to preserve the resource 

Until 2006, Algiers was experiencing an intermittent water supply with nightly service interruption. Thanks to the determination of the Algerian State and its partners, the distribution has become uninterrupted. Access to water is still critical in this region, where demographic pressure is particularly strong. In some surrounding cities where intermittent supply persists, distribution schedules are used to manage operations. Pressure sensors were installed to improve the proper implementation, allowing monitoring of the schedules and avoiding any abuse. The new module of AQUADVANCED® that we will develop, explains Vincent Fournier ENF expert, will professionalise the management of these distribution schedules. For this purpose, a pilot scheme will soon take place in Tipaza, a coastal town 70 kilometres from Algiers.
 
 
 
Improving network performance, preserving such a rare, fragile resource, improving services for the benefit of consumers: these are the objectives of the SEAAL teams working on AQUADVANCED® Water networks every day in Algiers and soon in Tipaza: 
 
  • 6,600 km of water network
  • 854,000 customers served
  • 1,200,000 m3 of drinking water produced per day
  • 238 hydraulic sectors and 138 pressure stages