Surface treatment wastewater is highly complex, containing a wide range of pollutants, and is far more difficult to treat than ordinary industrial wastewater. ERAGON ENVIRO TECH has been deeply engaged in the surface treatment industry for many years, dedicated to providing enterprises with stable and reliable wastewater treatment solutions.

For electroplating wastewater containing heavy metal ions such as chromium, nickel, copper, and zinc, as well as mixed effluents with cyanide, acids/alkalis, and organic pollutants, we adopt a combined process of “pretreatment + advanced purification.” In the pretreatment stage, precise pH adjustment and high-efficiency coagulation–sedimentation rapidly remove most heavy metals and suspended solids. In the advanced purification stage, technologies such as selective adsorption by chelating resins and catalytic oxidation are employed to remove and degrade residual pollutants, ensuring consistently stable effluent quality.

From process design to equipment installation and O&M services, we provide end-to-end solutions that help enterprises meet stringent environmental regulations while achieving both efficiency and cost-effectiveness in wastewater treatment, safeguarding green manufacturing.

Leveraging ultrafiltration and reverse osmosis technologies, ERAGON ENVIRO TECH has developed a wastewater reuse system tailored for surface treatment industries, offering a practical solution for “discharge reduction and efficiency improvement.” Using the ULTRAFLOW continuous ultrafiltration system in combination with the MMS multi-stage membrane concentration unit, the system achieves a reuse rate of 50%–80%, substantially reducing both freshwater consumption and discharge volumes at the source.

The MMS multi-stage membrane concentration process, through a step-wise separation design, achieves high recovery rates while lowering operational costs, with overall recovery exceeding 80%. This not only allows enterprises to cut water bills significantly each year, but also reduces wastewater discharge to help them comply with environmental supervision, enhance competitiveness, and achieve sustainable development.

ERAGON ENVIRO TECH offers ZLD and near-ZLD solutions for the surface treatment sector, integrating pretreatment + MMS multi-stage membrane concentration + evaporation–crystallization. Wastewater is first pretreated to remove suspended solids and partial pollutants, then concentrated via the core MMS technology, and finally processed through evaporation and crystallization to achieve complete liquid elimination.

Compared with conventional processes, the MMS system can achieve up to 90% concentration, significantly reducing the scale of downstream evaporators, thereby cutting both CAPEX and OPEX.

The evaporation system combines evaporation with crystallization separation, effectively reducing fouling and ensuring long-term stable operation. This provides enterprises with a reliable, economical, and environmentally friendly ultimate wastewater solution, enabling compliance with stringent regulations while supporting sustainable growth.