high-quality semi-soft filler

1. diameter 120mm-150mm 2.made of high molecular polymer 3.easy to biofilm formation and biofilm seperation

1.Semi-soft filling material is made of high molecular polymer,has strength ability of water distribution and gas diatribution.

2.the shape will not change after long term of use,easy to biofilm formation and biofilm seperation.the seperated biofilm are fine pieces,the filling material will not to block.

3.it has the resistance of rusty and biodegradation.the diameter is between 120mm-150mm, axial cords are plastic cords or fiber cords.

4.the type can be decided by the national standard or the consumers.

Technical parameters

Installation pitch mm	the specific surface area m2/m3	Quality  Kg/m3	void ratio %	weight after biofilm formation  Kg/m3
30	110	23.0	97.0	160
40	80	17.5	97.5	120
50	60	14.2	98.0	90
60	50	12.0	98.5	70
100	25	7.6	99.0	40

high-quality semi-soft filler