Zero Liquid Discharge Market – Snapshot
Zero liquid discharge (or ZLD) is a type of wastewater treatment technique, wherein almost all of the wastewater generated is recycled and purified. This eliminates discharge of any liquid at the end of the process, resulting in zero discharge of water. The zero liquid discharge wastewater treatment comprises several processes such as reverse osmosis, ultrafiltration, fractional electrode ionization, and evaporation & crystallization. A well-designed, efficient, and effective zero liquid discharge wastewater treatment system should be capable of handling any fluctuations in waste contamination and flow rate and capable to recover around 95% to 99% of water for reuse. It should also be able to treat and recover valuable byproducts from waste streams and should produce a solid and dry cake for disposal. The selection of components of a ZLD treatment plant depends on several factors. However, three factors largely determine the criteria for selection of these components: the flow rate to be handled by the system, the composition of wastewater stream, and the volume of contaminants present in the stream.
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Increasing demand for fresh water and scarcity of freshwater sources likely to drive the market
Fresh water accounts for only 3% of the total water present on the planet. Rising demand from different sectors is putting freshwater sources under great pressure. Rapid urbanization and industrialization is putting great stress on these sources, which are limited. Moreover, growing water pollution is another major reason for declining of freshwater sources across the globe. Thus, recycling and reuse of wastewater would be able to relive some of the stress on freshwater sources in the next few years. Since the water recovered from ZLD can be reused for industrial applications, the overall demand for fresh water from the industrial sector would reduce significantly, thereby making more fresh water available for drinking and other purposes. Thus, scarcity of freshwater sources is likely to drive the market for zero liquid discharge in the near future. Moreover, stringent rules and regulations related to the environment regarding wastewater and effluent discharge from the industrial sector are also likely to fuel the market for zero liquid discharge during the forecast period. With increasing pollution and depleting water sources, the government and regulatory authorities across the world are imposing stringent regulations on the disposal of industrial and municipal wastewater. In certain countries, authorities have mandated the use of ZLD in certain industrial sectors generating wastewater in large amounts.
Increasing power demand across the globe is leading to rise in the power generation capacity as well as generation of wastewater from thermal power plants. These power plants are required to treat wastewater before disposal. However, with ZLD, they can easily recycle the water and use it for boilers or other applications. Therefore, rising power generation capacity is also expected to drive the zero liquid discharge market in the near future.
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Several large players dominate the global zero liquid discharge market
Key players operating in the global zero liquid discharge market are Aquatech International LLC, Veolia, GEA Group Aktiengesellschaft, SUEZ, ENCON Evaporators, AQUARION AG, 3V Green Eagle S.p.A., Thermax Global, Oasys Water, Praj Industries, Kelvin Water Technologies Pvt. Ltd., Transparent Energy System Private Ltd., Austro Chemicals & Bio Technologies Pvt Ltd, Bionics Advanced Filtration Systems (P) Ltd., Dew Envirotech Pvt. Ltd, Arvind Envisol Limited, and ALFA LAVAL. The market also witnesses presence of local players in various regions.