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Is it possible to achieve zero discharge of wastewater?

Date:2026-03-10 Hits:3

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