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The PVA Foam Cube in Wastewater Treatment Process

PVA Foam Cube

One of the latest application for PVA foam cube in wastewater treatment. The aeration tank in the wastewater treatment plant is using PVA foam as a microorganism immobilization carrier.  This is because the open pore structure in the PVA sponge has becomes a good bio-holder for growing up microorganism. 

The porous effect and high porosity structure has becomes an environment to growth microorganism.  The high inter-connected porous structure becomes a waterway for microorganism to freely move in the foam.  Furthermore, the high porosity also refer to high internal surface area has become a good nature to hold-up microorganism.

The use of PVA foam cube shows a significant improvement in aeration tank performance of the wastewater treatment process.

The advantages of PVA Foam Cube

The traditional industrial wastewater treatment system uses plastic chip makes by PE material as MBBR substance.  However, with the latest technology innovation, many has evaluated and converted to PVA foam cube for obtaining a better wastewater treatment result.

Even though the PE type of MBBR substance comes in corrugated pattern to increase the surface area, but theoretically it is far less than the foaming structure.  Perhaps, the porous structure has promoted the foam becomes favorable to microorganism grow.

Unfortunately, not all the porous structure serves the same performance.  The PVA foam is far better for living of microorganism. 

The Wastewater Treatment Needs

For wastewater treatment process which having MBBR system, the PVA foam shows some benefits than the PE plastic material.

  1. The structure favour for microbial to hold.  The inter-connected porous structure provides a wide surface area for microbial to leave in the PVA foam cube.
  2. Provide nutrient for microbial to grow.  The PVA foam will degrade over the time and the degraded substance becomes the nutrient for the microbial.  This will enhance the growth of microbial.

The Foam Application

The PVA foam cube is a hydrophilic substance which will merge into the wastewater by nature.  Meanwhile, the water buoy force and the water flow turbulence will lift the foam cube.  With these 2 effects, the foam always remains within the wastewater layer within sinking underneath or floating at the upper part.

Just throw the PVA foam in the wastewater, with the foam nature, the microbial will slowly attach on the surface and becomes an effective biofilm.

The PVA Foam Cube with microb

The Consumption and Replenishment

The PVA foam will degrade over the time due to expose at outdoor and under sunlight.  The degrade PVA foam will becomes the nutrient source for the microbial and mixed in the wastewater. 

Furthermore, the degradation is slow, it should be able to last for 180days.  User has to replenish the subsequent batch of PVA foam cube in order to maintain the biofilm attachment.  Be rest assure, there is no hard solid residue on the wastewater pond due to the degraded foam cube.

Monitor the Biofilm

User could take out the foam cube from time to time to observe how the biofilm attached.  The extraordinary rich in biofilm indicated the foam cube is favour for microbial grow.  The biofilm will attach on the foam cube while the wastewater flow through as part of the nature. 

With the advantageous of PVA foam and convenient application method, these may become another improvement in industrial wastewater treatment process.  If you are in the midst of improving biofilm grow, then this is the moment to try out our PVA foam cube. Feel free contact us and learn more about this application.

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