Wastewater treatment filter foam is a high-performance open-cell polyurethane sponge designed for industrial and municipal water filtration. Available in 10–60 PPI grades, it traps suspended solids, debris, and contaminants while supporting beneficial bacteria growth. It maintains smooth water flow and long-term durability, making it ideal for sewage systems, biofilters, and water purification projects.
High Filtration & Biological Support
Uniform 10–60 PPI structure captures particles and supports bacteria growth, improving COD and ammonia reduction.
Durable & Anti-Clogging
High-quality polyether material resists compression and clogging, maintaining stable permeability in high-turbidity sewage.
Customizable for Any Project
Custom size, thickness, and PPI to fit MBBR, trickling filters, and various treatment processes.
Corrosion-Resistant & Safe
Chemically inert, non-toxic foam withstands harsh wastewater environments without secondary pollution.
Cost-Effective & Low Maintenance
Reusable and easy to clean, reducing replacement costs for water treatment plants.
Description | Polyurethane filter sponge |
Size | 40*40*40 or Custom-made |
Aperture | 10PPI-60PPI |
Density | 25KG/M3±1 |
Tolerance on length and width | ±2MM is eligible |
Tolerance on thickness | ±1MM is eligible |
Primary materials | Polyether polyol,Stronge Polyether polyol,MDI,TDI,Silicon,cpd.,coloring matter and so on. |
Tolerance on aperture | ±3PPI |
Tensile strength(kpa)≤ | 55 |
Elongation(％)≤ | 75 |
75% Compressed permanent deformation%≤ | 6 |
Resilience rage %≥ | 35 |
Strength at break N/CM≤ | 5 |
Rigidity when compressed by 25% %≤ | 70 |
Rigidity when compressed by 65% %≤ | 120 |
65%/25% compression rate≤ | 1.5 |
Temperature used | －50℃ to 50℃ |
Good resistance in acid and alkali | The range of PH :5.0-8.0 |
Municipal Sewage Plants
Used in biological filters and aeration tanks to trap solids and boost treatment efficiency.
Industrial Wastewater
Filters process water in factories, removing impurities before discharge or reuse.
Biofilm & MBBR Systems
Acts as a bacteria carrier in moving bed biofilm reactors to break down organic matter.
Stormwater & Rainwater Management
Removes debris in rainwater systems to prevent clogging and improve water quality.
Q: Can the filter foam be customized in size and PPI rating for our wastewater project?
A: Yes. We offer custom sizes, thicknesses, and 10–60 PPI grades to match different sewage treatment processes and equipment.
Q: Is the foam resistant to chemicals in industrial wastewater?
A: Yes. Made of corrosion-resistant polyether material, it withstands weak acids, alkalis, and common industrial pollutants without degradation.
Q: Do you provide bulk supply for municipal sewage treatment plants?
A: Yes. We support large-scale orders with stable production capacity, competitive pricing, and consistent quality for municipal and industrial projects.
Q: What certifications or standards do your filter foam products meet?
A: Our foam complies with international safety standards and is suitable for various water treatment applications, with non-toxic, secondary-pollution-free materials.
