PVA Cube Sponge

Open-Cell PVA Biocarrier for Wastewater, Industrial Effluent, and Aquaculture Treatment

The PVA Foam Cube is a high-performance biocarrier engineered for wastewater treatment, deodorization, and biological processing. Made from premium polyvinyl alcohol (PVA) with an open-cell hydrophilic structure, it creates excellent conditions for microbial growth in both aerobic and anaerobic systems. With superior hydrophilicity, durability, and abrasion resistance, it delivers stable long-term performance while reducing replacement frequency, maintenance needs, and overall operating costs. With its strength, efficiency, and adaptability, the PVA Foam Cube is a practical and sustainable choice for environmental and industrial applications.

Key Characteristics

PROPERTY	DESCRIPTION
Open-cell hydrophilic structure	Optimized porosity and firmness enable efficient microbial attachment.
Highly hydrophilic	Facilitates rapid water absorption and promotes robust biofilm formation.
Wear-resistant & durable	High mechanical strength ensures reliable long-term performance.
Residue-free formulation	Free from starch additives, minimizing residue and ensuring consistent operation.
Superior absorbency	Improves carrier precipitation and enhances stability in treatment tanks.
High volume efficiency	Increases treatment capacity per unit volume compared to conventional carriers.

Key Benefits

The PVA Cube Sponge is engineered to deliver reliable, high-performance treatment across multiple applications. Its unique structure and material properties provide the following advantages:

Customizable design – Available in various pore sizes and cube dimensions to fit MBBR, fixed-bed, or hybrid reactor systems.

High treatment efficiency – Open-cell hydrophilic structure enhances mass transfer, accelerates microbial growth, and improves overall system performance.

Operational stability – Superior water absorbency supports faster biofilm development, ensuring consistent and dependable treatment results.

Durable & cost-effective – Built for long-term operation, minimizing media replacement, sludge management issues, and energy costs.

Versatile use – Effective in both municipal sewage treatment and industrial wastewater applications, as well as aquaculture biofilters.

Applications

Moving Bed Biofilm Reactor MBBR with PVA cube sponges in active operation for wastewater treatment

MBBR (Moving Bed Biofilm Reactor) systems

PVA cubes act as floating biochip media with high specific surface and hydrophilic pores that speed biofilm formation and stabilize nitrification/denitrification. Ideal as an upgradeable MBBR substrate when operators want higher biomass per unit volume.

Municipal sewage treatment plant using PVA cube sponge biofilter media in MBBR tanks

Municipal sewage treatment (STPs & decentralised plants)

Use as a tertiary/secondary biofilm carrier to improve BOD/COD removal, enhance nitrification and reduce footprint compared with conventional suspended growth systems. Well suited to retrofit projects.

Industrial wastewater treatment plant with PVA cube sponge biofilter systems for chemical and manufacturing effluent

Industrial Wastewater Treatment for food, textile, and pharmaceutical plants

Robust and abrasion-resistant PVA cubes tolerate variable loading and shock loads, improving operational stability in industrial wastewater lines. Supports hybrid/reactor

Recirculating aquaculture system RAS with PVA cube sponge biofilter media for sustainable fish farming

Aquaculture & Recirculating Aquaculture Systems (RAS)

Acts as high-surface-area biofilter media for nitrification in RAS and pond systems, improving ammonia and nitrite control and supporting higher stocking densities. Reference image: Aquaculture biofilter tanks/media.

More Applications

Aerobic & anaerobic bioreactors (fixed-bed / hybrid reactors).

Biological Nutrient Removal (BNR) systems.

Industrial effluent polishing (after chemical/physical pre-treatment).

Aquaponics and aquaculture pond filters.

Deodorization towers / biological odor control (biofilters).

Research & pilot biochip reactors (lab and scale-up trials).

Specifications

Specification	Typical Range / Value
Material	PVA Sponge (Polyvinyl Alcohol)
Standard Dimension	10 × 10 × 10 mm (Customizable)
Porosity	90% up
Pore Size	Approx. 1000 μm
Color	White
Properties	Open-cell hydrophilic, Wear-resistant, Biodegradable, Durable

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