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Explore our core Multiple Effect Evaporator product lines specifically engineered for landfill leachate treatment, combining superior thermal efficiency with robust anti-scaling design for demanding wastewater environments.
A cornerstone technology in industrial wastewater management, the MEE system leverages cascading steam reuse to achieve exceptional energy efficiency and high-volume leachate reduction.
In a Multiple Effect Evaporator, the secondary steam generated in each effect is used as the heat source for the subsequent effect. This cascading energy reuse dramatically reduces live steam consumption — typically by 60–80% compared to single-effect systems — making MEE ideal for large-volume landfill leachate processing.
Landfill leachate is notorious for high concentrations of ammonia nitrogen, heavy metals, COD, and dissolved salts. Zongheng's MEE systems incorporate forced-circulation evaporation chambers, corrosion-resistant materials (titanium, duplex stainless steel), and CIP (clean-in-place) interfaces to maintain long-term operational stability.
When integrated with crystallization units and MVR (Mechanical Vapor Recompression) technology, the MEE system can achieve near-complete ZLD, converting leachate into reusable distillate water and recoverable salt solids — meeting the strictest environmental discharge standards globally.
Over three decades of engineering excellence in evaporation and concentration technology.
The global landfill leachate treatment sector is undergoing rapid transformation, driven by tightening environmental legislation, growing waste volumes, and the urgent need for energy-efficient processing technologies.
The global landfill leachate treatment market is projected to surpass USD 12 billion by 2030, growing at a CAGR of over 7.5%. Asia-Pacific, led by China and India, accounts for the largest share, driven by rapid urbanization, expanding municipal solid waste generation, and increasingly stringent environmental regulations enforced by government agencies.
Landfill leachate contains a complex cocktail of pollutants including high-concentration ammonia nitrogen (NH₃-N up to 3,000 mg/L), refractory organic compounds, heavy metals (Cr, Cd, Pb), chloride ions, and dissolved solids. Traditional biological treatment methods alone are insufficient, making advanced evaporation-based concentration technologies indispensable.
In China, the updated GB 16889-2008 standard and the "14th Five-Year Plan for Solid Waste Pollution Prevention" mandate zero-discharge or near-zero-discharge treatment for landfill leachate. Similar regulations are in force across the EU (Landfill Directive 1999/31/EC) and the US (EPA Subtitle D). MEE systems are increasingly specified as the core technology in compliance-driven treatment projects.
Energy costs represent 40–60% of total leachate treatment operating expenses. The adoption of MEE technology — especially when combined with TVR (Thermal Vapor Recompression) and MVR (Mechanical Vapor Recompression) — can reduce steam consumption by up to 80%, providing a decisive competitive advantage for landfill operators seeking long-term cost reduction.
The Multiple Effect Evaporator is not a one-size-fits-all solution — its modular architecture enables precise engineering for a wide spectrum of leachate treatment scenarios across different facility types and regulatory environments.
Municipal landfills generate leachate volumes ranging from hundreds to thousands of cubic meters per day. MEE systems configured in 3–5 effects, combined with pre-treatment (coagulation, biological denitrification) and post-treatment (RO or crystallization), achieve effluent quality meeting Class I discharge standards. Zongheng's systems are engineered to handle seasonal fluctuations in leachate volume and composition.
Hazardous waste landfills produce leachate with extremely high toxicity and heavy metal content. MEE systems in this application are constructed from high-grade titanium alloys or Hastelloy, with fully enclosed vapor handling to prevent secondary pollution. The concentrated residue is collected for further stabilization/solidification treatment, ensuring no harmful substances enter the environment.
For facilities targeting zero liquid discharge, MEE is deployed as the pre-concentration stage, reducing leachate volume by 60–80% before the MVR unit takes over for final concentration. This hybrid approach minimizes total energy consumption while maximizing water recovery. The recovered distillate can be reused on-site for dust suppression or equipment cooling, achieving a circular water economy.
Coastal landfills often face seawater intrusion, producing high-salinity leachate (TDS > 50,000 mg/L) that overwhelms conventional biological systems. MEE technology excels in this environment, concentrating the brine to near-saturation levels while recovering high-purity distillate. The system's multi-effect design ensures that even at high salinity, boiling point elevation is systematically managed across effects.
When leachate contains recoverable salts (sodium chloride, ammonium sulfate), the MEE system can be integrated with a downstream forced-circulation crystallizer. This configuration not only achieves ZLD but also generates marketable by-products, transforming waste treatment from a cost center into a partial revenue generator — an increasingly attractive proposition for landfill operators.
In landfill bioreactor designs, leachate is recirculated back into the waste mass to accelerate biodegradation. MEE systems serve as the volume-reduction engine, concentrating recirculated leachate to minimize the liquid inventory within the landfill body, reducing geomembrane stress and leakage risk while maintaining optimal moisture levels for microbial activity.
A systematic, multi-stage approach ensures maximum pollutant removal efficiency and energy optimization throughout the entire leachate treatment chain.
Screening, pH adjustment, coagulation-flocculation, biological denitrification to reduce ammonia load
Multi-effect evaporation reduces leachate volume by 60–80%, concentrating dissolved solids
Mechanical vapor recompression achieves near-saturation concentration with minimal energy input
Forced-circulation crystallizer separates recoverable salts from the concentrated brine
Clean distillate reused on-site; solid salt cake safely disposed or sold; zero liquid discharge achieved
The next generation of MEE systems for landfill leachate treatment is being shaped by digitalization, materials innovation, and the global push toward circular economy principles.
Next-generation MEE systems are being equipped with AI-powered process control platforms that continuously optimize steam distribution, evaporation rate, and energy consumption in real time. Machine learning algorithms predict scaling events and trigger automated CIP cycles, reducing unplanned downtime by up to 40% and extending equipment service life significantly.
The development of graphene-enhanced heat transfer surfaces, PTFE-coated evaporation tubes, and ceramic membrane integration is pushing the boundaries of MEE performance in highly corrosive leachate environments. These innovations increase heat transfer coefficients by 15–25% while dramatically reducing scaling and corrosion rates, lowering total lifecycle costs.
Forward-thinking landfill operators are coupling MEE systems with on-site landfill gas (LFG) energy recovery, solar thermal collectors, and waste heat from leachate biological treatment reactors. This multi-source energy integration approach can reduce the carbon footprint of leachate treatment by 50–70%, aligning with carbon neutrality targets set by governments worldwide.
The trend toward modular, skid-mounted MEE systems enables rapid deployment at remote or temporary landfill sites without the need for complex civil construction. Containerized MEE units with capacities from 5 to 200 m³/day are gaining traction in developing markets where infrastructure constraints limit the feasibility of conventional large-scale treatment plants.
Jiangsu Zongheng's Multiple Effect Evaporator systems represent the convergence of 30+ years of evaporation engineering expertise with the latest advances in materials science, process control, and environmental technology. Our MEE systems for landfill leachate treatment are not just equipment — they are complete, engineered solutions designed to meet today's regulatory demands while anticipating tomorrow's environmental challenges. With ASME "U" stamp authorization and ISO 9001:2015 certification, every Zongheng MEE system is built to the highest international quality standards.
Jiangsu Zongheng Concentration & Drying Equipment Co., Ltd.
Jiangsu Zongheng Concentration & Drying Equipment Co., Ltd. (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. The company covers an area of over 54,000 square meters, with a production workshop area of over 22,000 square meters.
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.
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 starch manufacturers and the industry. High-quality products and a sincere service attitude have won consistent praise and trust from numerous users at home and abroad, fully demonstrating the company's first-class technical advantages and manufacturing capabilities for large-scale equipment.
Jiangsu Zongheng is always committed to exploration and innovation. Main evaporation products include Multi-Effect Evaporators (MEE), Thermal Vapor Recompressors (TVR), Waste Heat Evaporators, and Mechanical Vapor Recompressors (MVR). These are widely used for liquid concentration including landfill leachate, high-salinity wastewater, organic wastewater, distillates, alcohol stillage, ammonium sulfate, corn steep liquor, starch sugar, sorbitol, glucose, fructose, and more — making Zongheng one of the domestic manufacturers with the most extensive product variety.
In March 2002, the company took the lead in obtaining ISO9001:2015 international quality system certification (Certificate No.: 45021). 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.
While meeting domestic market demand, the company's DDGS alcohol equipment and tube bundle dryer series products have been exported to Russia and Southeast Asian markets.
We are capable of providing professional technical support and after-sales service nationwide for our vast user base. High-quality products and their unique solutions not only enhance our corporate economic benefits but also bring us satisfaction by solving processing challenges for our clients.
We warmly welcome friends from various industries, both domestic and international, to visit us for cooperation and mutual development!
Explore our complete range of Multiple Effect Evaporator systems and related evaporation solutions for landfill leachate treatment, high-salinity wastewater management, and industrial wastewater disposal applications.
