• Moldability
  Produced from thermoplastic resin, shapes can be modified to meet various applications requirements.
• High physical strength
  Bio contact-N shows good performance, high elasticity and low strain

compatison of compression tolerance

compression degree	4.0mm 0%	2.0mm 50%	0.5mm 87.5%	0.1mm 97.5%	re-swelled
Bio Contact-N
PVA gel
PEG gel				break

hardness of swollen gel

• High wearability

• Easy handling

• Bio Contact-N provides a hydrophilic field for bacteria.

Swelled Bio Cnotact-N surface has multi-pore structure of 5∼10×10^-6m pore size.

• Denitrification by Bio Contact-N

By installing Bio Contact-N to your denitrification tank, performance can be improved.

laboratory scale

wastewater	influent [L/day]	tank volume [L]	amount of carrier loaded (filling ratio)	HRT [h]	NO3-N
					before [mg/L]	after [mg/L]
artificial sewage (15°C)	7.5	0.625	0.063L (10%)	2	30	0.8

pilot-plant scale

wastewater	influent [m3/day]	tank volume [m3]	amount of carrier loaded (filling ratio)	HRT [h]	NO3-N
					before [mg/L]	after [mg/L]
artificial sewage	21.2	0.9	0.45m3 (50%)	1	80	4

• Nitrification
  High performance achieved within reduced tank volume.

Sewage works plant

wastewater	influent [m3/day]	tank volume [m3]	amount of carrier loaded (filling ratio)	HRT [h]	before		after
					BOD [mg/L]	T-N [mg/L]	BOD [mg/L]	T-N [mg/L]
sewage	21600	2700	270m3 (10%)	3	200	35	20	10

• Membrane cleaning

Adequate of Bio Contact-N helps cleaning off sludge from membrane surface without damage.

item	P-44T
material	polyurethane (thermoplastic gel)
appearance	pillar
size	diameter : 4mm (swelled) length : 4mm (swelled)

Please contact us for specification adjustments.
Information and data presented here are based in carefully conducted laboratory tests and are believed to be accurate. However, results cannot be guaranteed and it is suggested that customers confirm results in their own laboratory.