1. Why can low-temperature evaporation achieve near-zero discharge?

Because its principle is physical separation:

Turn the water in the wastewater into distilled water (for reuse).

Lock all salts, COD, heavy metals, and pollutants in the concentrated solution.

Final result:

90% to 95% of distilled water is reused.

Only 5% to 10% of the concentrated solution is discharged or transferred to external disposal.

Basically, no more wastewater is discharged from the production line.

This is what the environmental protection department recognizes as:

Near Zero Discharge.

2. The actual effect of low-temperature evaporation in achieving near-zero discharge

Production wastewater: 100% collected into the equipment.

Distilled water: 90% to 95% reused in the production line.

(Electroplating rinsing, cleaning water, circulating water make-up, workshop water use)

External discharge volume: ≤5%

(Only a small amount of concentrated solution, disposed of as hazardous waste/solid waste)

Final external discharge of wastewater: 0 tons.

As long as the internal pipe network of the enterprise is well-constructed, it can completely achieve no external discharge outlets in the factory area.

3. Which industries have achieved zero discharge through low-temperature evaporation?

More than 90% of zero discharge projects in these industries use low-temperature evaporation:

Electroplating / anodizing

Rinsing water → evaporation → distilled water returned to the rinsing tank → true zero discharge.

Photovoltaic / electronics / chip cleaning

Cleaning wastewater → evaporation and reuse → ultrapure water level reuse, zero discharge.

Chemical high-salt wastewater

High salt content that cannot be biochemically treated → low-temperature evaporation and crystallization → full water reuse, salt resource utilization.

Cutting fluid / emulsion

Waste liquid reduction of more than 90% → distilled water reuse → no wastewater discharge from the workshop.

Pharmaceutical / fine chemical

Thermosensitive wastewater → low-temperature evaporation → full reuse → GMP-level zero discharge.

4. The standard definition of near-zero discharge (can be directly written into the plan)

Enterprise near-zero discharge = wastewater reuse rate ≥ 95%, and no production wastewater discharge outlets in the factory area.

Low-temperature evaporation can stably achieve:

Water recovery rate: 90% to 95%

Wastewater reduction rate: 90% to 98%

Pollutant interception rate: over 99%

Fully meet the requirements of environmental protection, environmental impact assessment, supervision, and green factories.

5. The most critical conclusion (can be directly promised to the outside)

Low-temperature evaporation is the most reliable, economical, and easiest-to-pass-acceptance technology for industrial wastewater to achieve near-zero discharge.

As long as the configuration is reasonable, enterprises can 100% achieve zero discharge of production wastewater.