WATER REUSE IN THE INDUSTRIAL SECTOR
The concept of water reuse implies reusing it in the same activity in which it was used or in a different activity. The current scarcity of water, combined with thehigh cost of water supply and discharge, is forcing industries to maximize the use of water in their processesthe reuse of water in the industrial sector is becoming an increasingly widespread practice
wHY REUSE PROCESS WATER?
Among the benefits of process water reuse for industries, the reduction of the water footprint, economic savings and the reduction of wastewater generation stand out. In addition,it is important to emphasize that reuse guarantees water availability in the face of water supply constraints and problemsthis provides an alternative source of process water that promotes a circular economy
- Reduction of water and chemical reagent consumption
Reusing process water entails a significant cost savingsreduction in the consumption of feed water and chemical reagents used in the process, such as coolants, oxidizers or disinfectants.
Since the feed water does not have a residual chemical content, unlike reused water,as the water input to the process is reduced, the amount of chemical required to maintain its concentration constant decreases.
- Decrease in the quantity of wastewater generated
Reused process water is water that is not sent to the WWTP (Industrial Wastewater Treatment Plant) and therefore is not considered or treated as wastewater. By reusing process water, the WWTP is not saturated and, at the same time, it is not treated as wastewater
- Increases scrubbing performance, helping the scrubber not to exceed the design load.
- Increases industrial production capacity with the same WWTPI.
- Reduces the amount of the discharge control fee.
IMPORTANCE OF THE TECHNOLOGY APPLIED IN PROCESS WATERS
For an industry it is key to know what reuse needs its water requires.These needs will be determined by the application in which the water is to be used.
For example, if we want to reuse process water in auxiliary systems such as cooling circuits and boilers, it will be essential to remove suspended solids and turbidity from the water, and to study whether it is necessary to lower the conductivity
For processes in which the aim is to reuse water for the protection of Nozzles, sprayers or cleaning, it will be essential to focus the Filtration on removing particles larger than the size of the Nozzle, preventing it from clogging. Other processes that allow the reuse of water are the washing of industrial machinery, cleaning systems or washing bathtubs in the food industry. In both processes, we can obtain a clarified water by means of a double filtration, with a stage of coarser solids and a second stage of fine solids
Another example is the chemical industry, which can reduce water consumption by up to 30% by using reused water in cooling, dilution and cleaning processes, thus achieving cost reductions and significant water savings
WEIR SOLUTIONS FOR PROCESS WATER REUSE
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At AZUD we are aware of the high water consumption in many industrial processes and we want to offer solutions that guarantee its correct reuse. AZUD HELIX AUTOMATIC AA disc filtration equipment, with its Double effect of surface and depth filtration, allows to eliminate the organic and inorganic suspended particles contained in the process water below the Filtration degree, thus guaranteeing their absence in the reused water
The AA system helps to reduce the water footprint by requiring only 10 liters of water for backwashing per filtering element, and reduces the frequency of maintenance operations thanks to the effectiveness of the cleaning process. It also reduces the frequency of maintenance operations thanks to the effectiveness with which cleaning is carried out
