CASE STUDY
Potable Borehole Water Treatment for Northgate in Harare
A 3.2 MLD potable water treatment plant using advanced AFM filtration and sodium hypochlorite disinfection to treat borehole water for the residential development.
LOCATION
Harare, Zimbabwe
INDUSTRY
Residential Development
PLANT CAPACITY
3.2 MLD Potable Water Treatment Plant
FINAL WATER USE
Potable Water
PROJECT OVERVIEW
High-capacity borehole water treatment for a residential development
Northgate mixed use development required a reliable borehole water treatment solution capable of producing a high-quality water supply for the residential development in Harare, Zimbabwe.
The available borehole water required effective removal of suspended solids and unwanted particles, together with reliable disinfection to address microbiological contaminants such as coliforms and bacteria.
Potable Water Treatment Overview
Treatment Capacity
3.2 MLD
Water Source
Borehole Water
Key Technologies
AFM Filtration + Sodium Hypochlorite Disinfection
Final Water Use
Potable Water
THE CHALLENGE
Removing fine particulates and controlling microbiological contaminants
The borehole water at Northgate mixed use development required treatment before it could provide the high-quality water supply needed for the residential development.
The treatment system needed to remove suspended solids and unwanted particles while also providing reliable disinfection to address coliforms and bacteria.
Raw Water Treatment Requirements
Designed Around Filtration and Disinfection
3.2 MLD
Potable water treatment capacity
Suspended Solids
Particulates requiring effective removal
1 Micron
Filtration level identified for the AFM system
Coliforms + Bacteria
Microbiological contaminants addressed by disinfection
Northgate mixed use development | Harare, Zimbabwe
Northgate Treatment Train
Borehole Water to Potable Water
01
Raw Borehole Water
Source water requiring filtration and disinfection
↓
02
AFM Filtration
Fine suspended solids and particulates are filtered
↓
03
Sodium Hypochlorite Disinfection
Disinfection addresses coliforms and bacteria
↓
04
Potable Water
High-quality treated water for the residential development
3.2 MLD Potable Water Treatment Plant
SEWTREAT’S SOLUTION
A 3.2 MLD borehole water treatment system using AFM filtration
SewTreat proposed a 3.2 MLD borehole water treatment system using advanced Activated Filter Media (AFM) filtration.
AFM filtration is designed to filter down to 1 micron, allowing the system to capture fine particulates that conventional sand and multimedia filters may not remove.
Following filtration, the water passes through a sodium hypochlorite disinfection stage to eliminate coliforms and bacteria and provide a safe, high-quality water supply for its intended use.
Treatment Process
How the Northgate borehole water treatment system works
The documented treatment process combines advanced filtration with a final disinfection stage before the treated water is used as potable water.
01
Borehole Water Feed
The plant receives borehole water that requires treatment before potable use within the residential development.
02
AFM Filtration
AFM filtration removes suspended solids and unwanted particles, with the project brief identifying filtration down to 1 micron.
03
Sodium Hypochlorite Disinfection
Following filtration, sodium hypochlorite disinfection is used to address microbiological contaminants including coliforms and bacteria.
04
Potable Water Supply
The integrated filtration and disinfection process provides high-quality treated water for the intended potable application.
PLANT BENEFITS
High-capacity potable water treatment with fine filtration and microbiological control
The Northgate mixed use development plant strengthens water security by treating an available borehole source at a capacity of 3.2 MLD.
01
3.2 MLD Capacity
Provides high-capacity potable water treatment for the residential development.
02
Advanced AFM Filtration
Provides effective filtration of fine suspended solids and particulates.
03
Filtration Down to 1 Micron
The AFM system is designed to filter particles down to 1 micron.
04
Microbiological Control
Sodium hypochlorite disinfection addresses coliforms and bacteria.
05
Improved Water Clarity and Purity
The combined treatment process improves water clarity and purity for the intended use.
Talk To Sewtreat
Need a high-capacity borehole water treatment solution?
Speak to SewTreat’s water engineers about a treatment system designed around your source-water quality, required capacity and intended final use.