I. What can low-temperature evaporation achieve?
Wastewater recovery rate: 90%–95%
1 ton of wastewater → 0.90–0.95 tons of distilled water (for reuse)
Concentration and volume reduction: 5%–10%
Only a small amount of concentrated liquid remains (hazardous waste / solid waste)
No wastewater discharge on the production line
No wastewater outlet on the factory premises
This is fully recognized by environmental protection authorities, environmental impact assessments, and inspections:
Near Zero Discharge
II. Can 100% complete zero discharge (no waste liquid at all) be achieved?
Yes, but a combined process of "low-temperature evaporation + final crystallization / solidification" is required.
Low-temperature evaporation: Evaporates water to about 5% concentrated liquid
Crystallization / drying / solidification: Converts the remaining small amount of concentrated liquid into solid residue
Final results:
No wastewater discharge
No waste liquid discharge
Only solid hazardous waste for outsourced disposal
This is true wastewater zero discharge.
III. Which industries have achieved zero discharge using low-temperature evaporation?
Low-temperature evaporation is used in 90% of zero-discharge projects in electroplating, anodizing, photovoltaic, electronics, chemical, and machining industries.
Electroplating rinse water → evaporation → recycled rinse water
Zero discharge
Cutting fluid wastewater → evaporation → 95% volume reduction
Zero discharge in the workshop
High-salinity chemical wastewater → evaporation + crystallization
Zero discharge for the entire plant