In this guide
This article explains the treatment objective, the design information that matters and the operating checks that help keep the system practical after installation.
Surface water can change quickly
Rainfall, runoff and seasonal conditions can cause large changes in turbidity, colour and organic matter. A design based on one clear-day sample may not represent the conditions the plant will face throughout the year.
Clarification can protect downstream filters
Where particle load is high, coagulation, flocculation and clarification may be used before media filters. The chemical dose should be established through appropriate testing and adjusted as raw-water quality changes.
Disinfection is part of a multi-barrier approach
Particle removal and disinfection work together because turbidity can protect microorganisms from disinfectants. Storage and distribution after treatment should also be considered so finished water quality is maintained.
Need a treatment recommendation for your water?
Send the water source, intended use, approximate demand and any available test report. Waterwise Bangladesh can review the requirement and discuss an appropriate treatment approach.