Self Cleaning Filter

Product specification

Self cleaning filter can remove suspended particles from wastewater. In municipal wastewater plants effluent of secondary sedimentation tank can pass through the filter and discharge as a grey water or process water.

Filtration is continuous and there is no need to side filter during washing operation. Due to Bernoulli principle during washing, there is a minimum water waste ( 99% efficiency)

Washing mechanism are as follows:

فیلترخودشوینده

1: During normal filtration, dirt particles accumulate from top to bottom on the inside of the filter insert according to fluid mechanical laws, when the set time or differential pressure reached the particle drainage valve will open

فیلترخودشوینده

2: In second phase a after the valve opens the flushing disc moves into the filter sieve without touching it. The outer diameter of the disc is smaller than the inner diameter of the sieve.The flow velocity increases within the gap between flushing disc and strainer. This causes a decrease of pressure between them.  Dirt particles are sucked out of the filter element

Sand filter Vs., self cleaning filter

Parameters Self cleaning filter (SCF) Sand filter
Automatic washing Yes No
Filter washing while filtration Yes No
Backwash time 0.5-1 min 20-30 min
Washing problems No Yes – sand scape
Water loss 1% flow per day 20 -30% flow per day
Low footprint yes No
Low operational cost Yes ( changing some spare parts) Media change- blower cost- more backwash consumption

Model F450 :

• Capacity 2-5000 mch
• Mesh size:150 micron t0 50 mm
• Operation pressure 1-25 bar
• For more information, please refer to catalog and data sheet

Model F480:

• Capacity: 220-45000 mch
• Mesh size: 40 micron- 50mm
• For more information, please refer to catalog and data sheet

Projects:

فیلترخودشوینده

Model F450 after secondary sedimentation

Mesh size: 500 micron

Operation pressure: 2.2 bar