The re-use of process and wastewater becomes more and more interesting:

• The cost of tap water is constantly increasing while concessions for the extraction of ground water are rarely granted anymore. It is expected that the price of drinking water will soon double in price.
• Many industrial processes require heated or cooled process water. By re-using process water, the energy requirement demands are lowered and therefore savings can be made on your energy expenses.
• When preparing process water, certain elements are removed to increase the performance of the system, while other substances are added to improve the water quality and promote the effectiveness of the process. When this water is re-used, it is free of unwanted elements and already contains those elements which are needed by the process, therefore lowering costs.
• Stricter demands are being made on the quality of the water flowing through processes. Disinfection by means of environmentally friendly products are highly recommended. Lenntech does not use chemicals for disinfecting purposes. Instead, Lenntech applies UV light and ozone which are very effective, yet harmless for the environment.
• The costs of draining off wastewater has risen by 20% in the past 5 years. These costs are expected to rise even more. Some companies have already placed pre-treatment units for treating wastewater. In many cases post-treatment of the water is also possible, therefore making it suitable for re-use in the process. The effluent can also undergo a less effective treatment and can be used as cooling or cleaning water. When none of the re-use options are chosen, Lenntech provides alternative methods of treating the effluent before draining. In this way the drainage tariffs are lowered.
  
  Source: Lenntech