Published 2026-07-04T12:33:40+08:00
Multi media filters use layered media such as quartz sand and anthracite to remove suspended solids before advanced treatment.
Sizing the filter correctly requires the design flow, raw water quality, target standard, and operating conditions.
Clear Answer First
Multi media filter sizing should be based on the project real water quality and flow rate. There is no universal size that fits every application.
Key Inputs for Sizing
- Flow Rate: The design flow determines the required filtration capacity.
- Raw Water Quality: Suspended solids, turbidity, and fluctuation range affect the filter loading.
- Target Water Quality: The final standard determines how much polishing the filter needs to provide.
- Operating Pressure: Available pressure and allowable pressure drop influence the design.
- Site Conditions: Installation space, piping arrangement, and maintenance access all matter.
Sizing Logic
Sizing should answer these questions:
- How much water must be treated?
- What solids load is present?
- How much pressure is available?
- How much maintenance can the project tolerate?
Typical Applications
Multi media filters are often used for:
- industrial process water
- surface water pretreatment
- cooling water treatment
- RO pretreatment
- polishing filtration
Common Mistakes
- Using the average flow instead of the design flow
- Ignoring seasonal variation
- Selecting the filter before the water report is confirmed
- Forgetting about backwash or maintenance space
FAQ
- Can I size a multi media filter without a water report? It is not recommended. Sizing should be based on actual project data.
- Is a multi media filter only for pretreatment? No. It can also be used in polishing or other filtration stages depending on the project.
- What information is needed before quotation? Flow rate, raw water report, target standard, available pressure, and project location are recommended.
CTA
Send your water quality data and flow rate. YAOTONG engineers will recommend a suitable multi media filter configuration.
CTA: Request Technical Proposal