Figure 1: High-voidage Environmental Balls (Eco Balls) for low-pressure drop applications.
When weight is a constraint and pressure drop must be minimized, Environmental Balls (also known as Eco Balls or Bio Balls) outperform traditional structured packing. Their spherical design and high void space allow for excellent air circulation and biomass growth, perfect for VOC scrubbers, deodorization towers, and MBBR wastewater treatment.
This guide explains how to deploy Environmental Balls to reduce fan energy costs and prevent media clogging.

Environmental Balls trade some mass transfer efficiency for drastically reduced weight and pressure drop. Here is the comparison:
| Packing Type | Void Fraction | Weight (kg/m³) | Best Application |
|---|---|---|---|
| Environmental Ball | >95% | ~85 kg/m³ | Bio-filters, Odor Control |
| Pall Ring | ~90% | ~100 kg/m³ | General Absorption |
| Ceramic Saddle | ~70% | ~700 kg/m³ | High Temp Acid |
In wastewater treatment (MBBR), the balls can become so heavy with biofilm that they sink or clump together. Design for regular backwashing or include mechanical agitators to slough off excess biomass.
Because they are lightweight, high gas velocities can lift the top layer of balls like a fluidized bed, causing them to collide and break. Install a mist eliminator or hold-down grid at the top of the bed.
Standard PP Environmental Balls degrade quickly under direct sunlight. If used in open-top bio-trickling filters, specify UV-stabilized resin or carbon black masterbatch to prevent embrittlement.

FXSINO supplies millions of Environmental Balls for global bio-filter projects. Send us your required volume and application details for a fast quote.
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