Vacuum Evaporation Concentration Process Diagram
The solution directly enters the GRELLIX vacuum evaporator, where it undergoes boiling and evaporation at 35°C under negative pressure, producing 90% clear distilled water that can be reused or discharged after meeting standards. Only 10% of the concentrate remains, which can be treated as hazardous waste or used to recover raw materials or by-products. This process helps enterprises save costs and improve efficiency.
The types of wastewater suitable for low-temperature evaporators include:
Oily Wastewater: Such as cutting fluid wastewater, emulsion wastewater, die-casting waste liquid, grinding and polishing waste liquid, surface cleaning wastewater, metal wire drawing lubricant waste liquid, coating waste liquid, landfill leachate, high-COD wastewater, high-concentration organic wastewater, release agent wastewater, graphene wastewater, and laboratory organic wastewater.
Saline Wastewater: Including reverse osmosis (RO) concentrate, high-salinity and high-COD wastewater, pickling wastewater, chemical and pharmaceutical wastewater, spray waste liquid, and desulfurization and denitrification spray waste liquid.
Heavy Metal-Containing Wastewater: Such as electroplating wastewater, chemical nickel wastewater, galvanizing wastewater, and zinc-nickel alloy wastewater.
Production Process Solutions: For example, concentrating and recovering process solutions in the production of food additives like hydroquinone.
Low-temperature evaporators are widely used in various industries, including chemical manufacturing, metal smelting, electroplating, and food processing, to effectively concentrate and reduce wastewater volume.
Benefits of industrial vacuum evaporators offer to enterprises:
Reuse of 95% of Water: These systems can recover up to 95% of water from wastewater, allowing it to be reused in production processes. This not only conserves water resources but also reduces the demand for fresh water, leading to significant cost savings.
Reduction of Waste Volume: By concentrating contaminants, vacuum evaporators significantly decrease the volume of waste that requires final disposal. This reduction minimizes disposal costs and lessens the environmental impact associated with waste management.
Achieving Zero Liquid Discharge (ZLD): Vacuum evaporators facilitate the realization of zero liquid discharge by effectively separating water from pollutants, enabling the complete elimination of liquid waste discharge. This approach aligns with stringent environmental regulations and promotes sustainable industrial practices.
Resource Recovery: During the evaporation process, valuable materials such as salts and metals can be recovered from the wastewater, providing additional economic benefits.
Operational Flexibility: These systems are versatile and can handle various types of industrial wastewater, including those with high salinity, high COD, or containing heavy metals, making them suitable for diverse industrial applications.
High Efficiency and Energy Savings: By utilizing a vacuum environment to lower the boiling point of liquids, these evaporators achieve efficient evaporation at reduced temperatures, leading to significant energy savings.
Improved Corporate Image: Implementing advanced wastewater treatment solutions like vacuum evaporators demonstrates a company’s commitment to environmental responsibility, enhancing its reputation among stakeholders.
By integrating vacuum evaporators into their processes, enterprises can achieve efficient wastewater management, comply with environmental standards, recover valuable resources, and enhance their corporate image.
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With 20 years of proven expertise in industrial wastewater treatment engineering, we can customize vacuum evaporators/crystallizers, and provide comprehensive solutions for wastewater treatment, liquid waste minimization and zero liquid discharge systems for all industrial activities.
If you have any related needs, please contact us immediately. We can provide you with a free technical solution.
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