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Achieving minimal unit energy consumption, MVR evaporators represent the pinnacle of energy-efficient wastewater concentration for heavy metal recovery.
Utilizing high-pressure steam to entrain low-pressure steam, TVR systems offer a balanced approach to capital cost and operational efficiency in metal finishing.
Robust and highly scalable, our MEE plants are ideal for handling massive volumes of complex, high-salinity electroplating rinse water.
Capitalizing on existing industrial waste heat, these evaporators drastically reduce carbon footprints while achieving stringent environmental compliance.
The electroplating and metal finishing industries are foundational to modern manufacturing, contributing critically to automotive, aerospace, electronics, and consumer goods sectors. However, these processes are inherently water-intensive and generate highly toxic effluent known as rinse water. This wastewater contains heavy metals such as chromium, nickel, copper, zinc, and various complexing agents, cyanides, and acids. In recent years, the global commercial landscape for industrial wastewater management has undergone a seismic shift. Driven by increasingly stringent environmental regulations globally—such as the EPA guidelines in the United States, REACH in Europe, and stringent ecological red lines in Asia—industries are no longer permitted to simply dilute and discharge.
The paradigm has moved decisively towards Zero Liquid Discharge (ZLD). Effluent evaporators have emerged as the most reliable and commercially viable technology to achieve ZLD in electroplating facilities. By utilizing phase-change separation, evaporators distill the rinse water, separating pure water (which can be recycled back into the plating process) from a highly concentrated sludge or dry solid containing the heavy metals. Commercially, this is no longer just a compliance cost; it is an economic strategy. The recovery of precious and semi-precious metals from concentrated effluent presents a lucrative secondary revenue stream, while the dramatic reduction in fresh water consumption and hazardous waste disposal fees offers a rapid Return on Investment (ROI).
Understanding the specific application scenarios of effluent evaporators is crucial for optimizing plant design. In Chrome Plating, the rinse water is highly acidic and toxic. Evaporators constructed with specialized anti-corrosive materials (such as titanium or high-grade fluoropolymers) are deployed to concentrate chromic acid, which can often be returned directly to the plating bath, closing the loop entirely. In Nickel and Copper Plating, evaporation not only prevents the discharge of these regulated metals but allows for the crystallization and recovery of metal salts. These recovered salts can be sold to refineries or reused, effectively turning waste management into asset recovery.
Furthermore, in the Precious Metal Finishing sector (gold, silver, palladium), the economic stakes are exponentially higher. Even trace amounts of these metals lost in rinse water represent significant financial leakage. High-efficiency Mechanical Vapor Recompression (MVR) evaporators provide the precision required to concentrate these dilute streams without thermal degradation, ensuring maximum yield during the subsequent metallurgical recovery phases. The application extends beyond pure plating to anodizing, passivating, and phosphating processes, where evaporators manage the complex mixtures of salts and organics, ensuring that the facility remains entirely independent of local municipal sewage constraints.
Formerly Yixing Yangxi Light Industry Machinery Factory, founded in 1992, is located in Zhoutie Town, Yixing City, on the shores of the beautiful Taihu Lake. Jiangsu Zongheng is a modern high-tech enterprise specializing in the manufacturing of concentration, drying, starch industry, alcohol DDGS, and Category III medium & low-pressure vessel equipment. It is currently a member enterprise of the China Starch and Alcohol Association. Its products are widely used in industries such as food fermentation, alcohol, chemical, pharmaceutical, environmental protection, and petrochemical.
Jiangsu Zongheng is always committed to exploration and innovation. Through years of sincere effort and user support, it has achieved sustained development. Main products include evaporation plants, comprising Multi-Effect Evaporators, Thermal Vapor Recompressors (TVR), Waste Heat Evaporators, and Mechanical Vapor Recompressors (MVR). These are widely used for liquid concentration, including distillates, alcohol stillage, organic wastewater, high-salinity wastewater, etc., making the company one of the domestic manufacturers with the most extensive product variety.
The company's other main products include Tube Bundle Dryers, with design and manufacturing capabilities reaching 1600m² (making it a primary manufacturer of large tube bundle dryers). Other main products such as Single Screw Fiber & Germ Dehydrators and Wash Cyclones are recognized as high-quality products by the industry.
As the industrial sector moves towards Industry 4.0, the technology behind effluent evaporators is evolving rapidly. The most significant trend is the integration of Artificial Intelligence (AI) and the Internet of Things (IoT) into the control systems of MVR and Multi-Effect Evaporators. Historically, managing the boiling point elevation, scaling, and foaming in high-salinity electroplating wastewater required constant manual supervision and frequent downtime for maintenance. Today, smart evaporators utilize machine learning algorithms to continuously analyze sensor data regarding temperature, pressure differentials, feed flow rates, and concentration densities.
These AI-driven systems enable Predictive Maintenance, alerting operators to potential scaling or compressor wear before it causes a system failure. Furthermore, AI optimizes the thermodynamic efficiency of the MVR compressor in real-time, adjusting the RPM based on the exact composition of the incoming rinse water. This dynamic adjustment ensures that the system operates at the absolute minimum energy consumption required for phase change, drastically lowering the OPEX (Operational Expenditure). The future of metal finishing wastewater treatment lies in fully autonomous, self-cleaning, and self-optimizing evaporation plants that guarantee 24/7 compliance with zero human intervention.
Another major development is the advancement in material science. The highly corrosive nature of electroplating baths—often containing fluorides, chlorides, and strong acids—has traditionally limited the lifespan of heat exchangers. The latest generation of evaporators utilizes advanced alloys, silicon carbide (SiC) heat exchangers, and proprietary polymeric coatings that offer unprecedented resistance to corrosion, thereby expanding the applicability of evaporators to even the most aggressive chemical environments.
In March 2002, the company took the lead in obtaining ISO9001:2015 international quality system certification (Certificate No.: 45021), establishing a complete quality assurance system aligned with international standards. In July 2007, it became a Jiangsu Provincial High-Tech Enterprise. In April 2009, the company obtained the Special Equipment Manufacturing License of the People's Republic of China (License No.: TS2232C42). In August 2012, it acquired the ASME "U" Stamp authorization, marking the company's entry into a new phase of development. The company possesses strong R&D capabilities and advanced manufacturing processes, currently employing over 3 senior engineers and more than 20 engineers and assistant engineers. Multiple innovative technologies have been patented, and many products hold leading positions domestically.
The company currently holds an absolutely leading position in evaporation technology and has extensive cooperation with many renowned large domestic group companies, including Zhuofeng Biology, Meihua Group, Yufeng Group, Yihai Kerry, North China Pharmaceutical Group, Harbin Pharmaceutical Group, Shouguang Juneng, Qilu Pharmaceutical, Qiyuan Pharmaceutical, Xiwang Group, Shengtai Biology, Zhejiang Huakang, Kelun Pharmaceutical (Yili), and Shandong Tianli.
Beyond our specialized effluent evaporators for electroplating, we offer a robust portfolio of industrial concentration, drying, and separation equipment tailored for diverse high-demand sectors.
Manufacturing capabilities reaching 1600m², serving as a primary manufacturer globally.
High-efficiency germ and fiber dehydration for the advanced starch industry.
Precision separation technology recognized as high-quality by top manufacturers.
Complete systems successfully exported to Russia and Southeast Asian markets.
Optimized for glucose, fructose, trehalose, and erythritol processing.
Medium & low-pressure vessels manufactured under strict ASME "U" Stamp standards.
Customized zero liquid discharge solutions for complex chemical wastewater.
Eco-friendly evaporation plants for pharmaceutical and food fermentation effluent.
While meeting domestic market demand, the company's DDGS alcohol equipment and tube bundle dryer series products have been successfully exported to Russia and Southeast Asian markets.
We are capable of providing professional technical support and after-sales service nationwide and globally for our vast user base. High-quality products and their unique solutions not only enhance our corporate economic benefits but also bring us immense satisfaction by solving complex processing and environmental challenges for our clients.
We warmly welcome friends from various industries, both domestic and international, to visit us for cooperation and mutual development!
