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.
Reject is part of the water balance
RO separates feed water into permeate and concentrate. The concentrate carries a higher concentration of many rejected salts, so it should be included in both hydraulic design and site drainage planning. Recovery should not be increased only to reduce reject volume without checking scaling limits.
Reuse depends on quality and application
Some facilities can consider concentrate for non-critical uses, but suitability depends on its chemistry, hygiene requirements and the receiving process. A reuse option should be evaluated as a separate water-quality decision rather than assumed to be safe for every purpose.
Track volume and chemistry
Measuring feed, product and reject flow makes it easier to verify recovery and identify changes. Where concentrate disposal is regulated or connected to an ETP, the expected salt load and any cleaning or dosing chemicals should be considered in the downstream plan.
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.
