Flue Gas Desulfurization Waste Water Treatment for Yongji Power Plant (2×300MW)
Mature wastewater treatment facility for a power plant

The industrial wastewater of the Yongji power plant is divided into three types of water qualities, including general wastewater and desulfurization wastewater. Each type of wastewater is designed to be treated with a different advanced wastewater treatment processes which allows the treated water to achieve the power plant desulfurization water quality requirements.


  • Capability: General wastewater, 110m3/h; Desulfurization wastewater, 20 m3/h

  • Technology: Dry lime humidification desulfurization

  • Project type: Engineering-Procurement-Construction (EPC)

  • Location: Yongji, Shanxi province, China

  • Footprint: 215,300 m2

Main Process

  • General wastewater treatment process:


  • Desulfurization wastewater treatment process:

The Water Quality of WWTP Influent and Effluent


  • Highly tailored wastewater treatment process

    According to actual conditions, the two types of wastewater were designed with corresponding treatment processes to meet suitable treatment requirements.

  • High water quality and capacity flexibility

    The Yongji power plant wastewater treatment processes are able to handle large capacities and have high processing capabilities to produce high quality output water.

Water Treatment Plant for the Datong Supercritical Power Plant (2×660MW)
SafBon leads the way in integrated membrane technology, including ultrafiltration (UF), reverse osmosis (RO) and electrode ionization (EDI).

China Datong power generation co., ltd (2 x 660 MW) is located in the western part of China, where water is limited. In order to reduce the water costs and the environmental pollution, the Datong supercritical power plant utilizes a SafBon designed integrated membrane deionization system to treat the effluent from Datong Northeast Suburb Municipal sewage treatment plant.


  • Capability: 16,800 m3/d

  • Technology: UF, RO and EDI

  • Project type: Engineering Procurement Construction (EPC)

  • Location: Datong, Shanxi province, China

  • Footprint: 3,800 m2

Main Process

The water quality of WWT Effluent

The produced water quality of WTP


  • Safe and reliable

    The using of ultrafiltration as the pre-treatment process results in less turbidity and SDI (silt density index) in the filtered water. It slows down the scaling and fouling process on RO membrane. 

  • Automatic operation

    The system is running automatically and requires less manpower operation compared with conventional processes.

  • Bold and innovative

SafBon originally designed the use of Municipal sewage as a water source, and the treated water completely meets supercritical boiler feed water quality requirements. Due to the poor water quality, high difficulty of the technology and the large scale of the project, it is also the first large-scale UF+RO+EDI integrated system successfully applied in a power plant in China.

Shijiazhuang Municipal Sewage Plant Project (100,000 t/d)
Shijiazhuang 100,000 t/d sewage plant is a typical municipal sewage treatment project, which adopts the modified Bardenpho process to achieve stable and high effluent quality.

Shijiazhuang 100,000 t/d Sewage Treatment Plant is one of the key environmental protection projects in Shijiazhuang and it is also strongly advocated by the local government. The main purpose of this project is to expand existing sewage treatment facilities. Since the development of Shijiazhuang, the amount of sewage has been increased and the scale of existing municipal sewage plant is unable to meet the demands any more. This project solved the urgent needs of wastewater treatment.


  • Capability: 100,000 t/d

  • Technology: Modified Bardenpho Process

  • Project type: Build- Transfer (BT)

  • Location: Shijiazhuang, Hebei Province, China

Main Process


The Water Quality of WWTP Effluent



  • High technical requirements

    A modified Bardenpho process is utilized in the project, which is able to eliminate COD, Nitrate and Phosphorus contaminants in the influent efficiently. The innovation aspect of this technology is that the denitrification and phosphorus removal can be completed simultaneously. In addition, both the denitrification rate (90%-95%) and phosphorus removal rate (97%) are higher than the commonly used process.

  • Water quality inferiority

    The influent of this project mainly comes from North China Pharmaceutical Factory and other industries around. The highest influent COD concentration can be 2000mg/L while the treated effluent quality always reaches the first grade A standard of China’s “Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant”. The effluent COD concentration was below 60 mg/L, which completely matches the design requirements.


Municipal Sewage Plant Project

The client, as well as the citizens in this area, are satisfied with the facilities, as its effluent quality achieved the requirements consistently since operation and has resulted in very low environmental impacts.

As the wastewater treatment plant undertakes the mission of treating sewage from the main urban area of Shijiazhuang, the reliable and efficient operation of the plant is crucial for the completion of the Integrated Treatment Project of Jiao River. The project also has a very important demonstration effect for the severe pollution cases in Hebei and Beijing-Tianjin-Hebei.

Tough Alcohol Wastewater Treatment Pilot Testing in Guangxi
Developing a pilot for investigating alcohol wastewater treatment.

In the pilot experiment, it is mainly investigated how hydraulic retention time (HRT) influences the wastewater treatment performances with the control variable method when the influent comes from cassava alcohol plant. This is the hash and tough wastewater. With a determined HRT and a variable SRT, the optimized removal efficiency (sludge retention time (SRT) = 30 d) is observed. With these optimum HRT and SRT condition, two different activated sludge concentrations was investigated to compare the effect factors of wastewater treatment. In the end of this experiment, the optimum condition of cassava alcohol wastewater treatment with anoxic/oxic/anoxic/oxic (AO/AO) - membrane bio-reactor (MBR) combination process was observed.


  • Capability: 0.16 m3/d

  • Technology: AO/AO-MBR combination process

  • Project type: Pilot-scale experiment

  • Location: Guangxi province, China

Main Process


The Water Quality of Pilot Influent and Effluent


Cassava Alcohol Wastewater Treatment Pilot


  • High performances

    SafBon adopted AO/AO-MBR combination process to treat very high COD and BOD5 wastewater. This advanced technology effectively improved wastewater quality.

  • Crucial milestone

    The success in using the control variable method to investigate alcohol wastewater treatment optimum condition provides the theory and realistic reference significance for the further research. And the result of this project is a crucial milestone to the final full-scale industrial application.

Xingyi Municipal Supply Water Project (30,000 t/d)
A successful full scale application of precoat filtration technology.

Xingyi water treatment plant employs SafBon precoat filtration as the core technology in portable water treatment process. It is a technology which has high removal rate of turbidity and algae and the produced water quality is better than standards for drinking water quality (GB5749-2006) required. 


  • Capability: 30,000 m3/d

  • Technology: Precoat filtration

  • Project type: Build-Transfer (BT)

  • Location: Xingyi, Guizhou province, China

  • Footprint: 15,000 m2

Main Process


The Water Quality of Water Treatment Plant (WTP) Influent and Effluent



Folding Plate Sedimentation Tank


  • Suitable for WTP process upgrade

The precoat filtration is a negative pressure filtration process, which matches the existing facilities in Xingyi water treatment plant well.

  • High effluent quality

The Xingyi water treatment plant produces water which achieves the requirement of standards for drinking water quality (GB5749-2006).

  • Reliable

This technology has been verified in several pilot scale experiments and first successfully adopted as full scale facilities in Xiangzhou water treatment plant. In the Xingyi water treatment, this project verifies another successful application.

Condensate Polishing System for the Duolun Coal Chemical Project
An advanced global project for investment scale, project size and technologies used.

SafBon won the contract for the condensate polishing project with Duolun coal chemical engineering project. The condensate in coal chemical process becomes harsh treated water. The condensate contaminates, i.e. organics, iron and hardness, are removed in the condensate polishing system and the treated effluent will be reused.


  • Capability: Process condensate, 1,400 t/h;Turbine condensate,900 t/h

  • Design Pressure: 0.6 MPa

  • Technology: Condensate polisher

  • Project type: Engineering-Procurement-Technical service (EP)

  • Location: Duolun, Inner Mongolia Province, China

Main Process

  • Process Condensate:


  • Turbine Condensate:


The Water Quality of CPP Influent and Effluent


The Water Quality of Turbine Condensate CPP Influent and Effluent



  • Stability and reliability

    The system has been running steadily for extended periods since it started operations. The effluent consistently meets the requirements for the power station and boiler water usage.

  • Automation

    The entire condensate polishing system adopts programmable logic controller (PLC) to achieve an automatic remote operation.

SafBon put a lot of work and preparation for the development, construction and thereafter operation of the water treatment system for this coal chemical plant Throughout this project and subsequently after, SafBon has demonstrated its strong technical capabilities, expertise, experience and variety for advanced technologies for the water treatment industry.

ZLD for the Uzbekistan Navoi Petrochemical Plant
A wastewater treatment project which adopts one of the first advanced zero liquid discharge (ZLD) systems in Uzbekistan.

Uzbekistan Navoi PVC, which is a caustic soda, methanol production complex, is a large petrochemical project launched by OAONavoiyazot, the largest chemical enterprise in Uzbekistan. SafBon successfully won the contract for the sewage treatment plant and certain aspects of the zero liquid discharge process. 


  • Capability: Biochemical wastewater treatment system, 4,800 m3/d; Reclaimed water treatment system, 10,080 m3/d

  • Technology: UF, RO and Triple effect evaporator

  • Project type: Engineering-Procurement-Technical service (EP)

  • Location: Navoi, Uzbekistan

Main Process

  • Biochemical wastewater treatment system:


  • Reclaimed water treatment system:


The Water Quality of Biochemical Wastewater Treatment System Influent and Effluent


The Water Quality of Reclaimed Water Treatment System Influent and Effluent



  • Utilization of Advanced Technologies

    There were two water treatment stages designed in the wastewater treatment project: Biochemical wastewater treatment and reclaimed water treatment. These water treatment stages are able to meet the requirements to process different wastewaters or varying qualities. The ultrafiltration (UF), reverse osmosis (RO), ion exchanger and triple effect evaporation technologies utilized in the processes ensures the high quality of the treated water.

  • Zero liquid discharge

    The zero liquid discharge concept applied in this project maximum the use of natural resources without leaving any waste to environment. 

Demineralized Water Treatment Process for Hequ Power Plant (2×600MW)
SafBon leads the way in integrated membrane technology, including ultrafiltration (UF) and reverse osmosis (RO).

Hequ Supercritical Power Plant (2×600MW) is located in Yizhou, Shanxi province, where water is limited. In order to reduce the water costs and the environmental pollution, the Hequ power plant utilizes a SafBon designed integrated membrane technology to treat the effluent from sewage treatment plant, following which the effluent will be used as boiler makeup water and recycled water source. Not only is the environmental pollution caused by the sewage reduced, but the reused water is increased, thus relieving the water shortage in the power plant.


  • Capability: 548m3/h

  • Technology:UF, RO

  • Project type: Engineering Procurement (EP)

  • Location: Hequ, Shanxi province, China 

Main Process


The Water Quality of Influent


The Water Quality of Effluent



  • Safe and reliable

The using of ultrafiltration as the pre-treatment process results in less turbidity in the filtered water. It slows down the scaling and fouling process on RO membrane.

  • Environmental friendly

The recycling of the treated water not only reduces the environmental negative impact caused by sewage discharge, but it also alleviates the local water shortage.

  • Bold and innovative

SafBon originally designed the use of the UF+RO integrated system successfully applied in a power plant in China. So that the water hardness, conductivity and other indicators fully meet the requirements of the system.

Mining and Produced Water Reuse Treatment for the Chihong Project (4,080 t/d)
Successful adoption of membrane technology, including UF and RO in metallurgical advanced treatment reclaimed treatment.

SafBon undertook the lead and zinc smelting wastewater advanced treatment project of the Chihong mining co., ltd, Inner Mongolia. In this project. Membrane technology and integrated wastewater advanced treatment technologies are applied here to further treat metallurgical wastewater.


  • Capability: 4,080 m3/d (Feed water)

  • Technology: UF and RO technologies

  • Project type: EPC(Engineering Procurement Construction (EPC)

  • Location: Hulunbeier, Inner Mongolia Province, China

Main Process

The Water Quality of WWTP Influent

The Water Quality of WWTP Effluent


  • Low environmental impacts

    The adopted wastewater treatment processes achieved zero liquid discharge status, so that the environmental pollution was minimized. All the treated water is reclaimed and reused in industry, thus mitigating the local water shortage issues.

  • Well-designed

    The whole project was designed indoors to prevent the equipment from extreme weather (Temperature: -30°C) in the winter. The adopted equipment uses more complete sets of steel containers which required a smaller footprint and shorter installation time.

The adopted metallurgical wastewater treatment technology of UF and RO and the reuse of produced water are able to alleviate freshwater resources strain.

Harsh Produced Water Treatment for Shengli Oil Field
A successful advanced oily wastewater treatment pilot, which utilized dissolved air flotation (DAF), precoat filtration and reverse osmosis (RO) was delivered to produce qualified pure water as boiler make-up water.

Binnan oil field of Sinopec Shengli oilfield operates a wastewater treatment plant using conventional treatment processes which had its own limitations. SafBon provided the solution to their urgent problems by designing and delivering advanced treatment processes using DAF, precoat filtration and RO for treating their oily wastewater and desalination needs. It helped the plant reach the discharge criteria and allowed the treated water to be recirculated as boiler make-up water.


  • Capability: 5,000 m3/d

  • Technology: DAF, Precoat Filtration and RO technologies

  • Project type: Pilot Equipment

  • Location: Binzhou, Shandong Province, China

  • Footprint: 5250 m2

Main Process

The Water Quality of Influent produced water

The Water Quality of Effluent produced water

Sample of Pilot


  • Cost-effective DAF process

    DAF is one of the core technologies applied in this project which was extremely cost and performance effective. It improved the suspended solid (SS) and oil removal efficiency and is able to operates over a wide range of hydraulic and solids loading while requiring less water and energy consumption.

  • Precoat filtration

    Precoat filtration performs more cake holding capacity, and it is completely automated with safe operation, easy maintenance and longer lifetime.

  • High clarification performance

    The RO technology used was simple and effective and achieved excellent stability, resulting in a high clarification performance and non-contamination emission.

SafBon owns the patented technology of precoat filtration technique and has all the expertise and experience to deliver professional and effective project designs and executions for projects similar to the Shengli oilfield.

Water Treatment Plant for the Taiyuan Second Power Plant (2x300MW)
Successful application of ultrafiltration (UF) for very large scale water treatment plant for power plant.

Safbon supplies the pretreatment system equipment, designed and supplied water heating, self-cleaning filter and ultrafiltration (UF) system for the Taiyuan 2nd power plant of China Datang Corp. (2x300MW). Safbon utilized the UF system to treat the effluent from Taiyuan Municipal sewage treatment plant as a boiler supply water source. In this way, the recycling rate of wastewater has been improved, which has alleviated the shortage of water resources in north China.


  • Capability: 1,500 m3/h

  • Technology: UF process

  • Project type: Engineering Procurement (EP)

  • Location: Taiyuan, Shanxi province, China

Main Process

The Water Quality of the Influent


The Water Quality of the Effluent



  • Stability and Reliability

The using of UF as the pre-treatment process can remove most of the large particles and colloid in the water substance. It slows down the scaling and fouling process on RO membrane. 

  • Conserves Water

Safbon utilizes UF system to treat the effluent from municipal sewage treatment plant as a boiler makeup water source. In this way, the recycling rate of wastewater has been improved, which has alleviated the shortage of water resources in north China.

Water Reuse Project for Coal Chemical Plant, Anhui Hwasu (1,000,000 t/a PVC)
Successful solutions for harsh reclaimed wastewater in a coal chemical plant.

In this project, SafBon provided the entire design, engineering and all the relevant equipment for the main process in the demineralized water production plant to treat the harsh effluent wastewater from coal chemical plant for the Hwasu corporation. This plant provided a consistently stable and reliable effluent quality which met all the requirements of the client. This high-performance project contributed to sustainable water reuses mandate in Hwasu corporation.


  • Capability: 10,800 m3/d

  • Technology: ultrafiltration (UF), reverse osmosis (RO) and deep bed polisher

  • Project type: Engineering-Procurement-Technical Service (EP)

  • Location: Dingyuan, Anhui Province, China

  • Footprint: 9,600 m2

Main Process

The Water Quality of Demi Water Treatment Process Influent and Effluent


  • Mature and reliable technology

    The conventional and mature demi water production processes are used in the project, which has been developing for a long period and proved the process always resulted in a stable and reliable effluent quality.

  • Automatic operation

    SafBon’s Automatic Control System with programmable logic controller (PLC) is utilized in various components of this project, including pump control, valve control and chemical dosing control. Thus, the system can be easily operated and the manpower is minimized.

SafBon has demonstrated the ability to provide complete pure water solutions for the plastic industry through stable and high-performance operational targets achieved in this project.