Low Impact Beamhouse and Tanning

Eco challenges in Beamhouse and Tanning

The main challenges in processing raw hides and skins are high contents of sulfide, nitrogen, salts and chromium and too high COD / BOD values of the waste water. In addition there are obnoxious smells, solid waste and fresh water consumption 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 clean the hair and hair follicles from grease to avoid hair root retention
  • ERHAVIT® LSU to support the unhairing process and allowing to reduce the lime and sulfide offer

Deliming / bating –Ammonium-free deliming / bating:

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

  • DERMASCAL® CD, the ammonium free deliming agent
  • OROPON® ON2, OROPON®W, OROPON® MS, OROPON® MT, the ammonium free bating agents

Benefits:

  • Sulfide reduction
  • COD / BOD reduction
  • Odour reduction
  • Sludge reduction in case hair is filtered
  • Ammonium and total nitrogen reduction
  • Reduction of risk 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 of chromium and common salt can be produced with:

  • SELLATAN® PA liq. as a pickle acid which allows a more even chromium penetration and improved chromium exhaustion

Benefits:

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

TFL ECO TEC – we help you to significant 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-used as 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 as waste water