Membrane Processes System
Water Recycling in the Paper Industry Without a system for recycling water, freshwater consumption in the paper industry would be more than 100 litres per kg of paper. The introduction of internal recycling systems and, where possible, the use of biologically treated wastewater can reduce the use of freshwater down to ca. 12 litres per kg of product.
The wastewater loading from used paper handling plants is particularly high. New production plants show that, with help from membrane technology, it is clearly possible to reduce the specific water consumption
- Clearly reduce water consumption
- Produce high quality process water
- Increase the running times of paper machinery.
Economic produciton of paper can be improved through the installation of membrane technology.
Example: Palm-Eltmann Paper Factory
Nanofiltration for Softening Drinking Water
For the average household (240 m³/a)), it has been estimated that a reduction in hardness (ca. 1.25 mmol/l) can lead to a minimum cost saving of 78 € per annum.
The consequential increase in the cost of treating drinking water is negilible. The application of nanofiltration in the softening of freshwater has already begun in Germany. The capacity of the plants already installed is almost 1.5 M m³/year. Over the next few years plants with capacities of up to 50 M m³/year will be built.
- Selective separation of hardness constituents
- Separation of bacteria and viruses
- Reduced energy consumption
- Reduced expenses in consequent treatment
- Reduced investment and operating costs
- Unloaded retentate (Direct disposal possible)
- Environmentally friendly solution
- Reduced problems in corrosion
- Many years of experience with membrane techology and nanofiltration