Practical achievements of various technologies for

PracticalachievementsofvarioustechnologiesforsustainableleathermanufactureinKanpurLeatherClusters

Viswanathan Munusamy1, Samir Kumar1, Arjun Yadav1, Ivan Kral2Aamir Awsaf3, Imran Siddiqui4, Farhan Ajmal5, Gulrez Usmani6, Asad K. Iraqi7

1KanpurLeatherDevelopmentProject,UNIDO, 2UNIDO, Vienna,3KingsInternationalLimited,4SuperTanneryLtd,5CalicoImpex,6LeayanGlobal,7AKITannery

PosterNo.

171IULTCSXXXIV2017INDIA

Withtheoverallobjectivetoenablelocalleather-basedindustrytosustainconversionoflocallyavailablerawhidesandskins intoexportableproductswithoutjeopardizingthelivelihoodofthehumansettlementsandsupplementingvariousongoingactivities toachievetotalenvironmentalsecurity,theUNIDOKanpurLeatherDevelopmentProjecthasbeendemonstratingvariouscleanertanningtechnologiesinvolunteertanneries.

PDU1:Hairsaveunhairing/liming

0% 100%

Reduction of pollution load in liming wastewater while adopting hair save unhairing

32% 37% 66% 61%

0%

20%

40%

60%

80%

COD BOD Sulphide Totalsuspended

solids

• Intheliming/unhairingbath,hairisloosenedandnotallowedtodissolveandloosenedhairisfilteredoutinhairfilteringmachine

• About1.8%ofhairontheweightofrawhidesisfilteredfromIndianoriginbuffalohides

• Theremovalofhairhelpreducequantityofsulphide

PDU2:Watermixingandmeasurement

• Visualjudgementofwaterconsumptionasadoptedinseveralsmallsizedtanneriesleadstohigherconsumptionlevelsby50to200percentagepoints

• Threetypesofmeasurementoptionsdemonstrated- waterflowmeters,electromagneticflowmetersandautomaticwatermixingcumadditionsystems

• Measuringwaterreducedthewaterconsumptionby20to30%• ReductionofquantumofpollutantslikeCODandTDSby15%and10%

inposttanningwastestreams

PDU3:Solarwaterheatingsystem

• Capacity:7000litresperday@600Conannualaverage• Area:192m2

• Typeofcollectors:Evacuatedtubes• Energysavings:725GJ/annum• CO2 reduction:97tonnesperannum

PDU4:Solarairheatingsystem

• Capacity:75000kcals/houronannualaverage• Area:270m2

• Typeofcollectors:Aluminium capsulatedchamber• Energysavings:847GJ/annum• CO2 reduction:114tonnesperannum

PDU5:Processingchilledhides• ReductioninTDSinsoak

liquor:upto40,000mg/l• ReductioninTDS:minimum

of300kg/t• PotentialforTDSinKanpur

cluster:90t/dWetblueproducedfromchilledhideprocessing

PDU6:Desalting

• Dustedsaltrecovery:60to90kg/tofrawmaterial

• ReductioninTDSby25000:mg/l

• OverallTDSreduction:15-20%

PDU7:Limeliquorrecyclingsystem

• Recoveryofrelimeliquor:80%outof125%float

• Reductioninwaterconsumptionlessby800l/t

• Savingsinchemicals-lime0.3-0.5%

• Annualsavingsinwaterconsumptionupto600m3

Rainwaterharvesting

Rainwatercatchmentareaisapproximately3500m2 andperseasonabout7564thousandgallonsofrainwaterfilteredfrom47differentpointsisestimatedtobedepositedtotheunder-groundwater