High Salinity Wastewater Zero Liquid Discharge System
Energy Saving and Environmental Protection Equipment and Engineering Services

Upholds the concept of "Benefit-Oriented Environmental Protection". Leveraging high-efficiency heat transfer and combustion technologies, the company specializes in "3 wastes" treatment, system energy-saving, and comprehensive energy utilization in the petrochemical, chemical, coal chemical, and new energy sectors. It offers end-to-end solutions, including feasibility studies, engineering consulting, design, integrated equipment manufacturing, EPC contracting, training, and startup services.

Chemical Materials and Clean Energy Equipment

Energy Saving and Environmental Protection Equipment and Engineering Services

Permafrost Treatment Engineering for Qinghai-Tibet Railway
Flare and Flare Gas Recycle System High Salinity Wastewater Zero Liquid Discharge System Heat-Supply System Based up on Industrial Waste Heat Integrated Energy System Solutions Unit Skids Petrochemical Plants
High Salinity Wastewater Zero Liquid Discharge System

High salinity wastewater is one of the most challenging industrial effluents to treat, characterized by high salt content, complex salt composition, and tendencies to cause scaling and corrosion. Conventional physical, chemical, and biochemical technologies have limited effectiveness in treating such wastewater.‌The high salinity wastewater treatment system is designed to process concentrated saline water discharged by industrial enterprises, aiming to reduce its volume, achieve water resource recycling, and further enable salt separation for resource recovery.‌The company provides comprehensive solutions tailored to clients' specific water quality variations and treatment requirements, encompassing process design, equipment manufacturing, system integration, and installation services.‌

Sunpower Tech is one of the early pioneers in promoting high salinity wastewater zero liquid discharge (ZLD) processes within the industry.‌By integrating "high-efficiency heat transfer technology" with low-temperature waste heat recovery systems, as well as proprietary processes like salt seeding and supercritical freezing, the company effectively prevents scaling and corrosion in treatment systems, reduces external steam consumption, enhances thermal efficiency, and achieves salt product resource utilization, thereby realizing zero liquid discharge of high salinity wastewater.‌

  • Wastewater Treatment Wastewater Treatment
    Wastewater Treatment
  • Water Reuse and High-Salinity Water Membrane Concentration Water Reuse and High-Salinity Water Membrane Concentration
    Water Reuse and High-Salinity Water Membrane Concentration
  • Evaporation Crystallization with Graded Utilization Evaporation Crystallization with Graded Utilization
    Evaporation Crystallization with Graded Utilization
  • Raw Water Purification Raw Water Purification
    Raw Water Purification
  • Circulating Cooling Water System Circulating Cooling Water System
    Circulating Cooling Water System
  • Demineralized Water System Demineralized Water System
    Demineralized Water System
Sunpower Technology (Jiangsu) Group Co., Ltd.
Technological Advantages
International joint team integrating advanced processes, offering process packages, engineering design, and EPC services; International joint team integrating advanced processes, offering process packages, engineering design, and EPC services;
International joint team integrating advanced processes, offering process packages, engineering design, and EPC services;
Experience in engineering design, equipment fabrication, and site services for China's first high-salinity wastewater ZLD unit; Experience in engineering design, equipment fabrication, and site services for China's first high-salinity wastewater ZLD unit;
Experience in engineering design, equipment fabrication, and site services for China's first high-salinity wastewater ZLD unit;
Mature processes recognized by large petrochemical enterprises, with successful transfers of multiple high-salinity wastewater ZLD process packages; Mature processes recognized by large petrochemical enterprises, with successful transfers of multiple high-salinity wastewater ZLD process packages;
Mature processes recognized by large petrochemical enterprises, with successful transfers of multiple high-salinity wastewater ZLD process packages;
Self-developed ZLD technology utilizing low-temperature energy recovery for ZLD systems; Self-developed ZLD technology utilizing low-temperature energy recovery for ZLD systems;
Self-developed ZLD technology utilizing low-temperature energy recovery for ZLD systems;
Independently developed salt separation and recovery system achieving true zero discharge; Independently developed salt separation and recovery system achieving true zero discharge;
Independently developed salt separation and recovery system achieving true zero discharge;
Typical Projects
High Salinity Wastewater Zero Liquid Discharge System
Shenhua Yulin Coal Comprehensive Utilization Project (Phase I) High-Salinity Brine Fractional Crystallization Unit Process Package & Key Equipment Supply, EPC Turnkey Contract
Shenhua Shaanxi Methanol Downstream Processing Project Saline Wastewater ZLD System
Shenhua Coal Direct Liquefaction Project Wastewater Treatment Plant (Desalination Section)
Sinopec Great Wall Energy & Chemical (Ningxia) High-Salinity Wastewater ZLD Project
Leshan GCL New Energy 100,000 t/a Granular Silicon Project 460 Wastewater Treatment Plant
Shenhua Yulin Coal Comprehensive Utilization Project (Phase I) High-Salinity Brine Fractional Crystallization Unit Process Package & Key Equipment Supply, EPC Turnkey Contract

Awarded 2023 Annual Science & Technology Second Prize by China Energy Investment Corporation. In 2021, President Xi Jinping inspected Yulin Chemical Co., Ltd. to review this project. Sunpower's first full-process fractional crystallization system applying low-temperature freezing coupled thermal evaporation-crystallization technology, with purified water recycled to cooling systems and high-purity sodium sulfate/chloride salts achieving resource utilization.

Shenhua Shaanxi Methanol Downstream Processing Project Saline Wastewater ZLD System

Awarded 2016-2017 National Quality Engineering Award. Sunpower's first ZLD project utilizing proprietary technologies through process package & EPCM delivery. Successful commissioning demonstrated full capability in design, fabrication and commissioning guidance, establishing MVR evaporation-crystallization as mainstream ZLD technology.

Shenhua Coal Direct Liquefaction Project Wastewater Treatment Plant (Desalination Section)

China's first ZLD system (membrane concentration + double-effect evaporation) constructed by Sunpower in 2007, with self-designed falling film evaporators. Full reuse of high-quality water and solid salt resourceization achieved genuine zero liquid discharge.

Sinopec Great Wall Energy & Chemical (Ningxia) High-Salinity Wastewater ZLD Project

Sinopec's first ZLD project under EPC model, listed in Sinopec "Ten Dragons" Key Technology Program and awarded 2016 Annual Quality Engineering Prize.

Leshan GCL New Energy 100,000 t/a Granular Silicon Project 460 Wastewater Treatment Plant

GCL's first western China granular silicon base with systematic-standardized-digitalized design. The evaporation system applied Sunpower's patented "Salt Seed Anti-scaling MVR Falling Film Process", enhancing scaling resistance and operation cycle.