Flow-optimised ODW mesh from GKD

Published: 12-Apr-2017

Fine pore openings and complex mesh construction aim for clog-free high flow capacity in water microfiltration

GKD-USA has improved the flow capacity of its Optimised Dutch Weave (ODW) meshes. GKD-USA is the North American division of Germany-based Gebr Kufferath (GKD), producers of woven wire mesh for industry.

The new developments bring water and wastewater filtration facilities a better throughput rate, better retention rate and longer filter media life.

The flow-optimised ODW meshes combine long-term reliability of filtration rates in the microfiltration range with throughput rates that are purportedly almost three times higher than other innovations recently presented on the market.

The flow-optimised ODW mesh has a long service life and low tendency to clog, claims the company.

The separated particles build up on, rather than in, the filter media and can be detached through simple backwashing.

“The high performance of the flow-optimised ODW mesh is possible due to a special mesh construction with an 8.5-times lower pressure loss coefficient when compared to competing products,” said Peter Wirtz, General Manager at GKD Solid Weave Business Unit.

The special weave of the ODW mesh creates a slot-shaped pore geometry on the mesh surface, where the openings are smaller than the pores inside the mesh.

Particles above the specified separation limit are retained on the mesh surface and smaller particles pass through the mesh interior without clogging.

ODW mesh alleged benefits

  • Filtration rates in the microfiltration range
  • High permeability
  • Long-term process reliability
  • Considerably lower resistance than conventional meshes
  • Requires less filter surface
  • Lower pump power options for reduced energy consumption and carbon footprint impact
  • More stainless steel wire brings greater stability to individual pores
  • Unrivalled overall mechanical strength
  • Greater reliability in long-term operation
  • Available for immediate delivery (standard sizes and range of pore openings)

“The special weave helps provide the high dirt-holding capacity of the product,” Wirtz said. “At the same time, the mesh construction ensures trouble-free cleaning, as the separated particles build up on, rather than in, the filter media and can be detached through simple backwashing.”

Pore size determined with IMVT formula

The mesh geometry is determined using the established formula of the IMVT. Flow capacity is improved due to the more porous mesh structure of the ODW. The larger open surface also contributes to to filtration processes.

“Our goal is the development of flow-optimised ODW with even finer pore openings,” Wirtz said. “We are absolutely convinced that this goal is within reach.”

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