Product 03
Filter Aid Powder
A filter aid is a fine, porous powder added to a filtration step. It forms a permeable layer on the filter medium, trapping fine solids without blinding the cloth, so the liquid keeps flowing and the filtrate stays clear.
- Form
- Fine powder
- Grades
- Multiple, matched to application
- Documentation
- Available on request
- Packaging
- Confirmed with each quote
Quick answer
What is filter aid powder used for?
Filter aid powder forms a porous layer on a filter cloth, so fine solids are trapped without blinding it. It is used as a precoat and as body feed to clarify liquids, keep filtration rates steady and remove fine carbon after a carbon treatment step.
Product overview
Filter aid is used in two ways. As a precoat, a thin layer is laid on the filter cloth or screen before filtration begins. As body feed, it is dosed into the liquid so the cake stays porous as solids build up.
Harshil Enterprises supplies filter aid powder imported from established manufacturers, chosen for clarity and permeability. It pairs naturally with powdered activated carbon: after a carbon treatment step, filter aid helps remove fine carbon particles cleanly.
How filter aid is used
- 01
Precoat
A slurry of filter aid is circulated to lay a thin, even layer on the filter medium.
- 02
Body feed
More filter aid is dosed into the liquid so the building cake stays porous.
- 03
Filter
Fine solids are trapped in the cake; clear filtrate passes through.
- 04
Discharge
At the end of the cycle the cake is removed and the filter is precoated again.
Key applications
Removing carbon after treatment
Keeps fine PAC out of the filtrate in pharmaceutical and chemical processes.
Clarification of liquids
Polishing process liquors, syrups and solutions to a clear filtrate.
Precoat filtration
A protective layer on filter press, leaf and candle filters.
Body feed
Dosed with the liquid to keep the filter cake permeable through the cycle.
Precoat or body feed?
| Precoat | Body feed | |
|---|---|---|
| When | Before filtration starts | During filtration |
| Where | Laid on the filter medium | Dosed into the liquid |
| Purpose | Protects the cloth, clear filtrate from the start | Keeps the cake permeable as solids build |
Industries served
Available grades and specifications
Grades are selected for your application. Parameters commonly specified for filter aid powder include:
- Grade (flow rate)
- Permeability
- Particle size
- Moisture
- pH
Choosing a grade: what to tell us
- Filter type: press, leaf, candle or nutsche
- Clarity required
- Flow rate and cycle length
- Nature of the solids, including fine carbon
Technical specifications available on request.
Tell us your application and the specification you work to, and we will share details for suitable grades.
Packaging
Packaging depends on the grade and quantity and is confirmed with each quote. Let us know your preferred pack size and handling requirements when you enquire.
Technical information
Technical data sheets and supporting documentation for each grade are shared on request.
Frequently asked questions
What is the difference between precoat and body feed?
Precoat is a layer of filter aid laid on the filter medium before filtration starts. Body feed is filter aid dosed into the liquid during filtration so the growing cake stays porous. Many processes use both.
Why use filter aid after a carbon treatment?
Powdered carbon particles are very fine and can pass through or blind a filter cloth. A filter aid layer traps them while keeping the flow rate steady.
Which grade do I need?
Finer grades give higher clarity at a lower flow rate; coarser grades filter faster. Tell us your filter type and the clarity you need, and we will suggest a grade.
Request product information
Share your application and requirement for filter aid powder. Our team will help you identify a suitable grade.
Prefer to talk? +91 98205 22171
