Optimization of processes for water recycling

By applying these modified process conditions, the present water consumption of around 30 1/kg for the conventional process could be reduced to 161/kg washed 

The online-controlling of the washing process can be done on the basis of 

The total quantity of ranovable dyestuff per m has to be determined first in laboratory trials. Then, the dyestuff content in each compartment of the real industrial rinsing process can be measured with onhne-sensors, which will be used for calculating the balance (how much dyestuff is washed off how much dyestuff needs to be washed of0- On the basis of this data, fabric speed as well as supply 

The hot-washing technique provides much better washing effects in the first compartment and shortens the washing process to only one cycle, resnlting in the same fastness level (wet rubbing = 3). This means that only 1/3 water and 1/3 washing time are required under hot-rinsing conditions in this specific case.  

An optimised rinsing and washing process significantly reduces the quantity of waste water and promotes possibilities for an economically acceptable water recycling nsing membrane technologies.  

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