TFL ECO TEC - Low Impact Beamhouse and Tanning

Established processes and chemicals taking care of the environment

Eco challengesin Beamhouse and Tanning

The main challenges in processing raw hidesand skins are high contents of sulfide, nitrogen,salts and chromium and too high COD / BODvalues of the waste water. In addition there areobnoxious smells, solid waste and fresh waterconsumption to deal with.

TFL ECO TEC in Beamhouse

Soaking / Liming –Low sulfide unhairing:

The TFL low sulfide unhairing provides a clean,relaxed, well opened-up pelt by using:

  • PELLVIT® LSG or PELLVIT® LSS in soaking to cleanthe hair and hair follicles from grease to avoidhair root retention
  • ERHAVIT® LSU to support the unhairing processand allowing to reduce the lime and sulfide offer
  • BORRON® DLS to avoid fat smearing drum walland pelt

Deliming / bating –Ammonium-free deliming / bating:

A safe, buffered system which cleans the peltremarkably well without having a negative effecton the integrity of bellies and grain by using:

  • DERMASCAL CD, ammonium freedeliming agent
  • OROPON® ON2, OROPON® W, OROPON® MS,OROPON® MT, ammonium free bating agents
  • BORRON® SCA bleaches and boostsscudd removal

Benefits:

  • Sulfide reduction
  • COD / BOD reduction
  • Odour reduction
    Sludge reduction in case hair is filtered
  • Ammonium and total nitrogen reduction
  • Risk reduction of H2S gas formation
  • Energy reduction in waste watertreatment plant
  • Optimised hair and scutt removal
  • Lay-out improvement
  • Optimal cutting yield

TFL ECO TEC in Tanning

Pickling / Chrome tanning –Low salt pickling:

A fine grain wet blue with reduced offer ofchromium and common salt can be produced with:

  • SELLATAN® PA Liq as a pickle acid whichallows a more even chromium penetration andimproved chromium exhaustion

Benefits:

  • Sulfate and chloride reduction
  • Chromium reduction
  • Better chrome distribution
  • Finer grain
  • Improved leather quality

TFL ECO TEC – we help you to significantly reduce your water usage

Direct float recycling:

  • Pre-soaking, main-soaking, the washing before deliming and after bating are all done with fresh water
  • The washing float from before deliming is re-used as washing float after liming and this float is re-usedas liming float
  • Pickle and tanning floats are recycled in a closed loop
  • Pre-soaking, main-soaking, liming, deliming and the washing floats after bating are discarded aswaste water

Direct float recycling

Possible reduction (%) of the ecological impact of a typical wet-blue plant –standard vs. low impact process:

Based on typical waste water values found before treatment. Full substance wet-blue processed from salted bovine hides of around 30 kg.