Polyurethane bio filter media

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Polyurethane bio filter media

description1

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Description

Polyurethane bio filler media is a sponge porous filler made of modified polyurethane sponge. Through the compounding of polyurethane material and nanoparticles, the mechanical properties, chemical stability and anti-aging properties of polyurethane sponge are improved. Has a reactive functional group, the active group can interact with the amino acid residues of the microbial peptide chain to form an ionic bond or a covalent bond to immobilize the microorganism and enzyme on the carrier.

It has the advantages of high porosity, good wear resistance, good hydrophilicity, and high microbial attachment rate. As the carrier of microorganisms, it affects the growth, reproduction, shedding and shape of microorganisms; secondly, the carrier plays the role of absorbing and intercepting suspended solids in sewage; thirdly, the carrier plays the role of cutting and blocking air bubbles, which can increase the stay of air bubbles in the water body Time and gas, liquid contact surface area, improve mass transfer efficiency. It can be seen that the carrier has a very important influence and significance on the operation effect and energy consumption of the biological contact oxidation process.

The concept of "suspension space" is introduced on the polyurethane filler carrier, which aims to reduce space barriers and provide a broad metabolic proliferation space for microbial cultivation, which can fully contact and exchange sewage, air, and microorganisms, and the biofilm can maintain good activity and void variability , without sticking together. The density of the carrier is close to that of water, and the carrier is suspended in water. It is applied in the fluidization tank and has the characteristics of huge specific surface area, high biomass per unit volume, uniform contact, fast mass transfer speed and low pressure loss.

Application range

Polyurethane filler can maintain a high concentration of biomass, so it has the advantages of large volume load, small footprint, low construction cost, high impact load resistance, no sludge expansion, high oxygen utilization rate, and low operating cost. It is suitable for oil refining , chemical industry, printing and dyeing, brewing, leather and papermaking and other high-concentration organic wastewater treatment projects.

The three-dimensional porous structure of polyurethane can make microbial populations with different degrees of aerobic demand grow and multiply. Externally attached microorganisms can quickly consume dissolved oxygen in water and transfer metabolites. When the consumption reaches the internal packing structure, an anaerobic microbial population is formed, so that the carrier can achieve anaerobic, anoxic and aerobic microbial structures from the inside and outside, and realize the simultaneous nitrification and denitrification. Nitrogen, total phosphorus, etc. have a high removal effect. Especially suitable for the treatment of high ammonia nitrogen industrial wastewater.

Characteristics

The specific surface area of the filler is large, and the microbial flora can rapidly multiply and grow on the surface, forming a highly active biofilm, which can effectively avoid the loss of microbial flora with slow propagation speed and low yield, such as nitrifying bacteria.