UNIONE NAZIONALE INDUSTRIA CONCIARIA - Euroleather

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water supplies and dischargesWater is used in the tannery mainly as a mean to achievethe chemical transformation of hides/skins through the useof products carried in solution. In fact, processing raw hides/skinsis developed via a series of phases performed in anaqueous environment. Therefore, water consumption andwater treatment represent the most important environmentalaspects in tanning.The companies have adopted various water supply systemsin order to meet the water needs, for example, thesesystems include artesian wells and connections to industrialand civil plants. At the same time, consortium facilities havebeen created in the main districts to treat the water discharges.As is illustrated clearly in Figure 12, the specific consumptionper product unit, expressed in litres consumed per m 2of leather produced is aligned over the eight years surveyedon an average value that is slightly higher than 118 l/m 2 . Theminimum value was recorded in 2007 (108.57 l/m 2 ) and themaximum value was recorded in 2002 (136.0 l/m 2 ). The va-lue referred to 2009 (118.36 l/m 2 ) is very close to the average(118.38 l/m 2 ).The data was measured by the companies included in thesample by reading the meters of the internal wells and/or of theindustrial aqueducts and therefore represents a precise value.Various activities are performed in the tannery to reducethe water consumption.The most significant of these activities are represented bythe development of processes which entail the reduced useof water resources and selecting/purchasing high-efficiencymachinery. The costs associated with these two activities(Figure 13) represent approximately 90% of the expenditurefor the characteristic activity based on the structure representedin Figure 14.Approximately 95% of the water consumed in the tanneryis transferred to the water treatment facility. The residualportion remains as humidity in the leather, evaporates or iscontained in the waste materials transferred to the treatmentprocess.The majority of the water discharged by Italian tanneriesis treated in centralised and consortium water treatmentfacilities, developed specifically for the needs of the tannerywaste products. A quota of less than 10% of the nationaltanneries manage the water treatment activity directly, sincenot located in production districts, mainly discharging intothe public sewer system.The companies which are connected to centralised watertreatment facilities, however, pre-treat the water in theplant, in order to remove the large residues and perform aninitial separation of the pollutants.Therefore, the analysis of the sector’s water treatment activitybecomes more complete with the direct involvement ofthe centralised water treatment facilities. This edition of theReport illustrates the data referred to the main centralisedwater treatment facilities for the sixth time (2004–2009).The water treatment facilities involved in the 2009survey treated the water of 739 tanneries distributedamong the Veneto, Tuscany and Campania Regions.14012010080604020136.00figure 12 - Water consumption per product unit2002 - 2009 (l/m 2 )121.70109.94121.79113.33108.57117.33118.36118.3802002 2003 2004 2005 2006 2007 2008 2009Annual valuesAverage valueSource: UNIC 200926
figure 13 - Reduced water consumptions: characteristic activities 2007 - 2009200964.0%24.0%12.0%200840.0%35.0%25.0%200736.0%54.0%9.0%1.0%0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%Development of processes ensuring greater water saving or recycleSelection and purchase of high-efficiency water consumption or water recycle machineryWater consumption accountingOtherSource: UNIC 2009figure 14 - Reduced water consumptions: costs structure 2007 - 2009200960.5%9,2%9.2%9.8%11.3%200855.4%3.1%40.3%1.2%200719.7%25.1%1.3%38.1%15.8%0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%Personnel Consumables Consultancy services Services Depreciation OtherSource: UNIC 200927
Page 1: UNIONE NAZIONALE INDUSTRIA CONCIARI
Page 4: INTRODUCTIONThe Italian tanning ind
Page 7 and 8: partONE5
Page 11: figure 2 - Production by type of an
Page 14 and 15: Hides / SkinsBeamhouseThe tanneryTa
Page 16 and 17: Italian tanning production has now
Page 19: finishing: conferringthe final exte
Page 22 and 23: 20%18%16%14%12%10%8%6%4%2%0%15%14%1
Page 24 and 25: The characteristic activities highl
Page 26 and 27: The structure of the energy consump
Page 30 and 31: 200920082007200620052004figure 15 -
Page 32 and 33: Once again, the data referred to 20
Page 34 and 35: 3%figure 19 - Water management cost
Page 36 and 37: waste productionand managmentThe wa
Page 39 and 40: waste: management costThe waste man
Page 41 and 42: atmospheric emissionThe main parame
Page 43 and 44: figure 31 - Production/solvents con
Page 45 and 46: figure 32 - Improved atmospheric em
Page 47 and 48: final considerationsThe absolute va
Page 49 and 50: figure 38 - Incidence of environmen
Page 53 and 54: partTHREE51
Page 55 and 56: 2009200820062009200879.0%80.4%83.2%
Page 57 and 58: 100%88%75%63%figure 7 - Structure o
Page 59 and 60: figure 12 - Training activities 200
Page 61 and 62: 30figure 17 - Average duration 2006
Page 65 and 66: partFOUR63
Page 67: figure 1 - Innovation by typefigure
Page 70 and 71: U NCUNIC TANNINGIntroductiono caThe
Page 72 and 73: THE TANNERIES® Adelaide S.p.A.Bass
Page 74 and 75: 72Via Brisa, 3 -20123 Milano - Tel.
Page 76: Via Brisa, 3 -20123 Milano - Tel. 0

UNIONE NAZIONALE INDUSTRIA CONCIARIA - Euroleather

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