What is VPMF?

Variable pore-structure microfilters (VPMFs) operate by compressing a cylindrical filter element during filtration, trapping solids in its folds. Backwashing involves expanding the filter, dividing its pore structure, and using air and water to dislodge trapped material. Maintenance focuses on ensuring proper backwashing and preventing excessive fouling.

How VPMF Works

1. Filtration Phase

Raw water flows through a tightly compressed cylindrical microfilter. As pressure builds, suspended solids are trapped in the folds of the filter material, and clean water is discharged.

2. Backwashing Phase

A mixture of air and water is forced in the opposite direction, expanding the filter. This splits the pore structure into strands, dislodging trapped solids efficiently—with no need for chemical cleaning.

3. Vibration Enhancement

Some systems include a vibration mechanism during backwashing to maximize cleaning and reduce downtime

Maintenance Benefits

• No chemical backwashing — just air and water

• Less fouling due to adaptive pore structure

• Smaller footprint than conventional filters

• Easy inspection and filter replacement

• Optimized for long-term durability

VPMF Services Include

We provide end-to-end solutions for VPMF-based systems:

• Custom design & installation of VPMF systems

• Filtration system integration into existing STPs or ETPs

• Backwashing system design and optimization

• Periodic maintenance, inspection & filter element replacement

• Raw water analysis for fouling prevention

• Training for onsite operations teams

• System diagnostics for performance drop

Who Is It For?

Our VPMF solutions are ideal for:

• Sewage Treatment Plants (STPs) – municipal, industrial, residential

• Effluent Treatment Plants (ETPs) – for textile, pharma, food & beverage industries

• Commercial Water Treatment – schools, hospitals, housing societies

• Any facility requiring compact, efficient, eco-friendly filtration