WASTE MANAGEMENT IN LEATHER INDUSTRY

80 93In addition to these information; the waste water of Company B is processedthrough treatment, is disposed to the sewer system after appropriate standards aremet. Wastewater of Menemen Free Leather Zone is collected by 3 differentchannels, on condition that pre- treatment process is completed in a plant whereall pre-treatment facilities of the undertakings of the zone has been carried outand the waste water is disposed to the sewer system.The trim waste of Company B is used in various industrial branches as a rawmaterial. The trim waste of Company A is also used in supplier industries as araw material. However, unfortunately shaving waste can not be used today forsuch reasons as transportation, the distance between the industries etc. whereas inthe past it is very useful raw material resource which can be used in variousindustrial branches.Salting is applied in both facilities in order to protect the tanned leathersuntil they arrive at the facility.Both sheep and goat leather and cattle leather is tanned in the secondfacility while, in the first facility, only sheep and goat leather is tanned. While waste products from snipping and trimming processes are not usedas raw materials for another industry in the first facility, they are sold as rawmaterials in the second facility. In both facilities, dissolving with lime method is used for hair-removingprocess, so it is not possible to recycle the hair and in addition, the water ispolluted more by the chemicals and leather leftovers. Especially COD and BODloads are increased more in the water.In both facilities, chrome tanning method is used. This method is theoptimum method in terms of the characteristics that the leather gains. In addition,