ZLD SOLUTION – zero LIQUID DISCHARGE FOR HAZARDOUS WASTEWATER
With Evaporative crystallization technology designed and manufactured by TVTS, factories can completely stop discharging hazardous waste into the environment, recover clean water that meets reuse standards, and convert all dissolved solids into dry crystals.
WHY BUSINESSES NEED ZLD
As environmental regulations become increasingly stringent – “zero discharge” is no longer an option, but a requirement.
🔒 QCVN 40:2025/BTNMT requires thorough control of COD, TDS, and heavy metals.
⚙️ New industrial parks in Binh Duong, Bac Ninh, Dong Nai, Long An… are required to have a water reuse rate of ≥30%.
🌿 The ESG & Carbon Neutral 2030 policy requires businesses to demonstrate “zero discharge”.
💧 The ZLD solution helps businesses:
- Meet legal requirements,
- Reduce long-term operating costs,
- Elevate their green and sustainable brand image.
PROCESS FLOWCHART OF A HAZARDOUS WASTEWATER TREATMENT SYSTEM USING HPVE CRYSTALLIZATION TECHNOLOGY MEETING ZLD STANDARDS
The ZLD system using TVTS’s HPVE Evaporative crystallization technology is a closed-loop operation of the evaporator under vacuum conditions.
After concentration by HPVE, the wastewater is upgraded to the crystallization or sludge pressing/drying stage to obtain and separate the crystalline solid impurities.
🌡️ Operates at low temperatures – protects materials, saves energy
♻️ Recovers up to 95% of clean water for internal reuse
💎 Crystallizes pure solid salt, easy to collect and transport
⚙️ Anti-scaling and self-cleaning (CIP) design
🔋 Reduces electricity consumption by 60–80% compared to resistance evaporators
🧭 Fully automatic operation, integrated with SCADA for online monitoring
OUTSTANDING TECHNICAL ADVANTAGES
The outstanding advantages of the HPVE Evaporation System – Crystallization at TVTS
READ MORE HPVEHIGHLY EFFECTIVE APPLICATION AREAS
Electroplating – metals
Cast iron, steel
Jewelry making, …
Manufacture of electronic components,
electronic circuit boards, semiconductors
Wastewater contains chemicals and organic solvents (acids, bases, inorganic salts).
Leachate from landfills, waste treatment plants, waste-to-energy plants
(COD > 20,000 mg/L)
Industrial gas plant
(Condensate + cleaning solution)
