2 Water, 6 Recycling

Which principle is water recycling based on?
1. filtration
2. treatment with bio-degradable chemicals
3. treatment with micro-organisms
Why is water recycled by filtration systems?
1. in order to avoid extra pays for heavily soiled water
2. in order to use it once more in another washing process
3. in order to supply clean water to the sewer
What is the benefit of water recycling?
1. none
2. better control of water quality
3. savings in volume of freshwater and laundry effluent, savings in energy because the recycled water still is at increased temperature and therefore has to be heated less
What does “cascade filtration” or “filtration switched in a row” mean?"
1. filtrated water is used in a washer extractor
2. several washer extractors connected by filtration systems switched in a row
3. water is running through several filters with decreasing permeability. In that way more and more small particles are filtered by and by
Filtration system for the washer extractor: where is the water collected?
1. in a continuous batch washer
2. in the washer extractor itself
3. in storage tanks