Multi-effect evaporation technology

The core principle of multi effect evaporation technology is to use the secondary steam generated by the previous evaporator as the heating steam for the next evaporator, thereby achieving cascade utilization of energy and significantly reducing the demand for external steam.

Multi-effect evaporation technology
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MVR Evaporation Technology

MVR evaporation technology is an efficient and energy-saving evaporation technology, whose core lies in compressing the secondary steam generated by the evaporator, increasing its pressure and temperature, and then using it as heating steam to achieve the recycling of steam energy.

MVR Evaporation Technology
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Distillation technology

Distillation technology is an advanced form of distillation specifically used to process liquid mixtures with similar boiling points. By performing multiple partial vaporization and partial condensation inside the tower, the purity of the product is gradually improved.

Distillation technology
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Resin adsorption technology

Resin adsorption technology is a technique that uses resin materials to adsorb and separate target substances in a solution. Resin adsorption technology mainly includes three methods: physical adsorption, chemical adsorption, and ion exchange.

Resin adsorption technology
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Application

Application areas

Water treatment

Chlor-alkali

Electricity

Metal processing and manufacturing

Chemical Pharmaceutical

Mechanical manufacturing

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Engineering Performance

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High-salinity wastewater three-effect evaporation crystallization treatment project

High-salinity wastewater three-effect evaporation crystallization treatment project

****** Chemical Co., Ltd. mainly produces efficient and low-toxicity agricultural fungicides, especially Kexingdan agricultural fungicide, and plans to become the largest production base for Kexingdan agricultural fungicide in the country and a high-end rubber carbon black production enterprise. In addition, the company also produces pesticides and pesticide intermediates, including an annual output of 600 tons of 2,2-dimethyl-5-(4-chlorobenzyl) cyclopentanone, 500 tons of trimethyl bromosulfone, and 500 tons of leaf fungicide, among others. This project deals with wastewater containing mixed salts, high COD, and high concentration, with a designed evaporation capacity of 4.0t/h, a designed boiling point elevation of about 14°C, and the recovery of mixed salts through evaporation crystallization. The process design involves a three-effect forced circulation evaporation crystallization. The high-salinity wastewater is treated by evaporation desalination, and the condensed water is sent to the sewage station, while the mother liquor is dried, and the crystallized salt is outsourced. The project has been accepted, and customer satisfaction is relatively high.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

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Falling Film MVR Evaporation System

Falling Film MVR Evaporation System

**** Chemical Co., Ltd., falling film MVR capacity enhancement project. The MVR evaporation crystallization device adopts a falling film + forced circulation evaporation crystallization process flow; the material after concentration crystallization is pumped by the discharge pump into the thickener for further cooling crystallization, where a large amount of crystalline material is precipitated and enters the centrifuge for solid-liquid separation. The separated high-salinity liquid falls onto the belt conveyor, while the centrifuge mother liquor returns to the forced circulation evaporator to continue evaporation crystallization. Non-crystallized substances return to the front pretreatment system for flocculation and sedimentation. The entire wastewater treatment system does not discharge concentrated liquid outside the system, operates stably, and has a high customer satisfaction rate.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

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Mother liquor drying zero discharge evaporation system

Mother liquor drying zero discharge evaporation system

***** Environmental Governance Co., Ltd. Zero Emission Device Mother Liquid Drying Project. During the evaporation crystallization treatment process of zero emission wastewater, approximately 1.5m3/h of mother liquid is continuously generated. This portion of mother liquid has a very high concentration of pollutants such as COD and nitrate ions, which, when returned to the previous system, causes a decrease in evaporation capacity and an increase in mixed salt quantity. The mixed salt produced is required by the environmental protection department to be disposed of as hazardous waste, with treatment costs of about 3000 yuan per ton. To reduce production costs, the mother liquid generated by the system is temporarily stored and partially sent to the ash storage for dust suppression based on the needs of the thermal power ash storage, while the remaining portion of the mother liquid is returned to the previous system, putting significant pressure on production. Treatment capacity: 1.5m3/h, operational flexibility: 60-120%, effluent TDS less than 500 ppm, meeting customer requirements and receiving unanimous praise.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

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Skid-mounted MVR Evaporation System

Skid-mounted MVR Evaporation System

**** Air Conditioning Refrigeration Co., Ltd. 200L/H High Salinity Wastewater MVR Evaporation Concentration Skid-mounted. **** Air Conditioning Refrigeration Co., Ltd. is engaged in the design and manufacturing of various specialized refrigeration and cold storage equipment; involved in the design, research and development, and service of refrigeration and cold storage equipment controllers. The company generates high-concentration, high-salinity organic wastewater during the production process that needs to be treated, with a treatment capacity of 200L/H, and the evaporated water meets customer requirements.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

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Triple Effect Evaporation System

Triple Effect Evaporation System

****** Co., Ltd. has a three-effect evaporation system. The industry that ****** Co., Ltd. is engaged in includes the research and development, production, and sales of refrigerants, fluorine fine chemicals, hydrochloric acid, hydrofluoric acid, fluororesins, and fluorine membranes. The company generates high-concentration, high-salinity organic wastewater during the production process that needs to be treated. The wastewater mainly contains sodium chloride, ammonium chloride, sodium sulfate, and ammonium sulfate. The wastewater treatment capacity of the system engineering project is 2000 kg/h, and the treated effluent has a TDS of less than 500 ppm, meeting customer requirements and receiving unanimous praise.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

See more →
Forced circulation MVR evaporation system

Forced circulation MVR evaporation system

****** Technology Co., Ltd. is engaged in the MVR evaporation concentration crystallization project for high-salinity wastewater. The company operates in the production, processing, and sales of chemical products (excluding hazardous chemicals and controlled substances); research, development, and sales of network engineering, bioengineering, and biological products; and the development of energy-saving new materials, as well as import and export trade. The company generates high-concentration, high-salinity organic wastewater during the production process that needs to be treated. The wastewater treatment capacity of the system engineering project is 5T/h, with a salt content of 20~60%. After treatment, the TDS of the effluent is less than 500ppm, meeting customer requirements and receiving unanimous praise.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

See more →
Easy and Simple Environmental Protection Electroplating Wastewater Zero Discharge MVR Evaporation System

Easy and Simple Environmental Protection Electroplating Wastewater Zero Discharge MVR Evaporation System

The business scope of ****** Co., Ltd. includes the research and development, and services of environmental energy technology; the research, design, manufacturing, sales, installation, maintenance, and technical services of environmental protection equipment, water treatment equipment, and resource reuse equipment; and the sales of chemical raw materials (excluding hazardous materials). The company generates high-concentration, high-salinity organic wastewater during the production process that needs to be disposed of. The electroplating wastewater treatment system has a capacity of 0.5T/H MVR evaporation crystallization with zero discharge. This system is designed for an evaporation capacity of 0.5t/h, using the concentrated RO water from the previous system and part of the high-concentration mother liquor as the treatment water source. The treated effluent has a TDS of less than 500ppm, receiving unanimous praise from customers.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

See more →
Three-effect falling film + forced circulation evaporation system

Three-effect falling film + forced circulation evaporation system

**** Group (Benxi) The wastewater treatment station project for the **** R&D pilot and industrialization base project (Phase I) includes a high-concentration wastewater three-effect evaporation desalination system. The high-concentration, high-salinity organic wastewater generated from the process production of the wastewater treatment station at the **** Group (Benxi) Northern Pharmaceutical R&D pilot and industrialization base project (Phase I) is treated through the three-effect evaporation system. The evaporated water is sent to the next stage for discharge, while the solids are packaged and transported out. Ultimately, the high-salinity wastewater meets discharge standards, receiving unanimous praise from clients.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

See more →
Easy and Simple Environmental Low-Temperature MVR Evaporation System

Easy and Simple Environmental Low-Temperature MVR Evaporation System

**Pharmaceutical Factory Co., Ltd. (Shanghai Pharmaceutical Group), Low-Temperature MVR Treatment Project for Production Wastewater.** The pharmaceutical factory is a comprehensive pharmaceutical enterprise that focuses equally on chemical raw materials and pharmaceutical preparations, with a full development in science, industry, and trade. This system is designed to support the hydrochlorothiazide raw material workshop, aiming to remove aniline compounds from the raw water. The designed treatment capacity is 10 t/d, with a pH of 4-8 and a solid content of 7.6%, which includes approximately 3.2% sodium chloride, 3.8% ammonium chloride, and about 0.6% other organic substances, with a COD of approximately 3000 mg/L, where organic substances do not volatilize during evaporation. The design employs low-temperature MVR evaporation (60-65°C) to concentrate the solution by 5 times, resulting in the cold crystallization of organic substances. The high-salinity and high-ammonia mother liquor undergoes alkaline deammonification to produce ammonia water, with a designed deammonification rate of 90%. The low-ammonia brine after deammonification is added to the biochemical system for compliant discharge. The evaporated condensate is reused in production. This meets production needs, and customer satisfaction is very high.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

See more →
Distillation + Triple Effect Evaporation System

Distillation + Triple Effect Evaporation System

**** Technology Co., Ltd. 8T/H High Salinity Wastewater Distillation + Triple Effect Treatment Project. Design treatment scale: High salinity wastewater treatment capacity of 200t/d (8t/h). **** Technology Co., Ltd. operates in the field of UV curing in radiation curing, which is a globally encouraged green and environmentally friendly industry. The products can be widely applied in the fields of electronics, printing, food packaging, and medical materials, including photopolymer coatings, photosensitive imaging materials, photopolymer inks, and holographic laser imaging, in high-tech areas such as integrated circuits, flat panel displays, and 3D printing. They also have extensive applications in the medical beauty industry, such as dental materials and nail art. The company generates two types of high-concentration high-salinity organic wastewater during production that need to be treated. The first type is a mixed wastewater containing sodium chloride (about 5%), ammonium sulfate (in small amounts), tert-butanol (3%), toluene, sodium carbonate, and other oils, currently producing 20t of wastewater per day, which may expand to about 80t per day in the future. The second type is a mixed wastewater containing sodium carbonate (about 3.5%), sodium chloride (trace amounts), and other organic substances, currently producing 30t of wastewater per day, which may expand to about 120t per day in the future. The tert-butanol wastewater is designed to use distillation to recover high-concentration tert-butanol, which then enters the evaporation system for desalination. The condensed water from evaporation is included in the sewage treatment plant for biochemical treatment before being discharged in compliance with standards. The sodium carbonate high-salinity wastewater is directly evaporated for desalination, and the condensed water is reused in production. Customer satisfaction is very high, and the second phase of the project has been entrusted to our company.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

See more →
MVR+ Single Effect Evaporation Project

MVR+ Single Effect Evaporation Project

**** Chemical Co., Ltd. 5t/h, MVR evaporation + 1.5t/h single-effect evaporation project. **** Chemical Co., Ltd. is mainly engaged in the processing and production of pesticide active ingredients and formulations. The main material for evaporation in this project is sodium thiosulfate solution, which contains small amounts of sodium chloride, sodium sulfate, sodium formate, and sodium thiocyanate. The system design is divided into two parts: the first part is the MVR evaporation system, designed to handle 120t/h, with an incoming feed pH of around 11, an incoming feed temperature of about 60°C, and an outgoing material specific gravity of 1.4 to 1.45g/cm³, which is then sent to the single-effect evaporation system for further concentration. The second part is the single-effect evaporation system, designed to handle 1.5t/h, with an incoming feed pH of around 11, an incoming feed temperature of about 60°C, and an outgoing material specific gravity of 1.5 to 1.55g/cm³, which is then sent to the next process in the plant. The evaporated condensate is treated in the wastewater treatment station and meets discharge standards. The customer is very satisfied with the operational performance of the evaporation treatment system designed by our company.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

See more →
Zero Discharge MVR Evaporation System for Electroplating Wastewater

Zero Discharge MVR Evaporation System for Electroplating Wastewater

Environmental Technology Co., Ltd. operates in the areas of research and development, and services related to environmental energy technology; research, design, manufacturing, sales, installation, maintenance, and technical services of environmental protection equipment, water treatment equipment, and resource reuse equipment; sales of chemical raw materials (excluding hazardous materials). The company generates high-concentration, high-salinity organic wastewater during production that needs to be disposed of. The electroplating wastewater treatment system has a capacity of 0.5T/H MVR evaporation crystallization with zero discharge. This system is designed for an evaporation rate of 0.5t/h, using the concentrated RO wastewater from previous systems and some high-concentration mother liquor as the source of treated water. The treated water has a TDS of less than 500ppm, receiving unanimous praise from customers.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

See more →
Low Temperature MVR Evaporation System

Low Temperature MVR Evaporation System

***** Co., Ltd. (Shanghai Pharmaceutical Group) is implementing a low-temperature MVR treatment project for wastewater. ***** is a comprehensive pharmaceutical enterprise that focuses equally on chemical raw materials, chemical formulations, and the development of science, technology, and trade. This system is designed to support the hydrochlorothiazide raw material workshop, with the aim of removing aniline compounds from the raw water. The designed treatment capacity is 10 t/d, with a pH of 4-8 and a solid content of 7.6%, which includes approximately 3.2% sodium chloride, 3.8% ammonium chloride, and about 0.6% other organic substances, with a COD of approximately 3000 mg/L. The organic substances do not volatilize during evaporation. The design employs low-temperature MVR evaporation (60-65°C) to concentrate the solution by a factor of 5, resulting in the cold crystallization of organic substances. The high-salinity, high-ammonia mother liquor undergoes alkaline treatment to remove ammonia and produce ammonia water, with a designed ammonia removal rate of 90%. The low-ammonia brine after deammoniation is then added to the biochemical system for compliant discharge. The evaporated condensate is reused in production. This setup meets production needs and has received high customer satisfaction.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

See more →
Sodium Chloride Solution MVR Evaporation Crystallization Project

Sodium Chloride Solution MVR Evaporation Crystallization Project

**** Chemical Co., Ltd. is a technology-based manufacturing enterprise that produces intermediates for pharmaceuticals and pesticides.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

See more →
High-salinity wastewater double-effect evaporation concentration project

High-salinity wastewater double-effect evaporation concentration project

This project includes two sets of 8 tons/hour double-effect evaporation concentration devices. The system operates stably and has a high degree of automation. This device meets production needs, and customer satisfaction is very high.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

See more →
High-salinity wastewater three-effect evaporation concentration project

High-salinity wastewater three-effect evaporation concentration project

This project mainly deals with mixed wastewater from various workshops, with an evaporation capacity of 48 tons per day (2 tons per hour). After the wastewater is evaporated and concentrated, it enters the centrifugation separation stage, and the system has a high degree of automation.

Systematic Design of Industrial Wastewater Treatment

Pretreatment Technology of High Salt and High Concentration Organic Wastewater

Energy Saving Design of Evaporation System

salt separation technology by evaporation crystallization

Reduction and Stabilization Technology of Evaporation Mother Liquor

See more →
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About Us

Provide customers with a full range of technical support and services

200

Has undertaken nearly 200 engineering cases

20

More than 20 patent applications

Has a number of industry qualifications

With the construction enterprise qualification certificate environmental engineering professional contracting qualification, special equipment production license pressure vessel manufacturing qualification, ISO9001/I-SO14001 quality management system/environmental management system certification and many other industry qualifications

Strong engineering execution ability

The company has a strong project execution ability, and has completed more than 100 environmental protection projects all over the country. After years of development and hard work, Yijian Environmental Protection has now ranked among the advanced ranks of the domestic environmental service industry

Continuous research and innovation

The company cooperates with the Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences to establish an energy-saving evaporation research and development center, and establishes the Beijing Key Laboratory of Thermal Process Energy-saving Technology of the Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences Changzhou Branch Laboratory as the production and research base.

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Pharmaceutical Co., Ltd.

2024-12-16

Pharmaceutical Co., Ltd.

From the implementation results in my company, the 1.0T/H double-effect evaporation crystallization treatment device provided by Jiangsu Yijian Environmental Protection Technology Co., Ltd. has a high overall cost-performance ratio in terms of equipment quality and wastewater treatment effectiveness compared to similar devices.

***** Pharmaceutical Co., Ltd.

2024-12-16

***** Pharmaceutical Co., Ltd.

From the implementation results of my company, the quality of the 2.0T/H three-effect evaporation concentration treatment device provided by Jiangsu Yijian Environmental Protection Technology Co., Ltd., the quality of installation and construction, and the wastewater treatment effect are all comparatively high in terms of overall cost performance among similar equipment.

**** Chemical Co., Ltd.

2024-12-16

**** Chemical Co., Ltd.

From the implementation results in my company, the 5.0T/H MVR and two sets of 1.5T/H single-effect evaporation crystallization treatment equipment provided by Jiangsu Yijian Environmental Technology Co., Ltd. have a high overall cost-performance ratio in terms of equipment quality, installation quality, and wastewater treatment effectiveness compared to similar equipment.

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