Water Consumption Minimizing in Hydrophilic Cotton Manufacturing and Sterile Gauze Industries
Among all industries hydrophilic cotton from raw cotton and all type of medical gauze from textile productions have high water consumption. Due to this reason water recycles and reuse in these industries and generally water usage minimization in these units have especial importance. For practical research in this context one of domestic industry has been selected as a case study. Water usage minimization in other industries have been investigated in different countries, but nearly all these researches are related to minimization of water consumption in raw cotton production. Results showed that minimization of water consumption whit recycle and reuse method in these industries are very successful, to the extent of water can be saved about 65 percent after and simple aeration and reservation for 10 hours and recycling in to production recycle. Usually in these industries three types of consumption exist: one for hydrophilic cotton production, next for medical gauze and last for general consumption. In selected industry for medical gauze production and hydrophilic cotton, the amounts of water consumption are 40 lit/kg and 43 lit/kg respectively. And the remaining is about 20 lit/kg for other consumption, such as boiler, chiller, restaurant, personal and … consumption. Regarding water quality needed for every stage of production. The wastewater of some units can be used as fresh water for other units, by this method the total consumption of this factory can be reduced to 13 of total of it, without damaging quality of factory production.
