Reclaimed Water Advanced Treatment for Shouyangshan Power Plant (2×600MW)
A SafBon advanced lime technology project in reclaimed water treatment processing has been running steadily for over 10 years.

China resources group required a reclaimed water treatment system for the Henan Shouyangshan (2 x 600 MW) power plant. The effluent from Luoyang sewage treatment plant is treated by this system. The treated water is reused as circulating cooling water and boiler make-up water. And the produced sludge can be directly used for the desulfurization process in the power plant.

A lime technology is utilized in this project, including automated powdered lime storage, metering and preparation system. The milk lime is fed into the specially designed clarifier. This technology solves the issues, such as hopper rat-holing, arching and bridging of the lime system to achieve a dust-free process.

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Lime Bin Activator

Overview

  • Capability: 80,000 m3/d

  • Technology: Lime coagulation and clarifying filtration technology

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

  • Location: Shouyangshan, Henan province, China

Lime Bin Activator

Main Process

Gravity Sand Filter

Highlights

  • Stable and reliable

    The facilities have been running steadily and the effluent has always met the requirements for over 10 years.

  • Low environmental impacts

    The application of SafBon lime technology has resulted in dust-free conditions.

  • Energy-saving emissions, hence energy reduction and progress towards a circular economy

    The effluent water quality can be used for circulating, cooling and boiler make-up, thus reducing the total water consumption; the CaCO3 contained sludge can be used for desulfurization and it reduces the chemical consumption. In summary, the process saves 8 million yuan/year of operating costs for the Shouyangshan power plant.

SafBon offered 30 sets of successful references for milk lime reclaimed water reuse projects.

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.

Overview

  • 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


Highlights

  • 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.

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.

Overview

  • Capability: 0.16 m3/d

  • Technology: AO/AO-MBR combination process

  • Project type: Pilot-scale experiment

  • Location: Guangxi province, China

Main Process

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The Water Quality of Pilot Influent and Effluent

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Cassava Alcohol Wastewater Treatment Pilot

Highlights

  • 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.

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. 

Overview

  • 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:

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  • Reclaimed water treatment system:

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The Water Quality of Biochemical Wastewater Treatment System Influent and Effluent

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The Water Quality of Reclaimed Water Treatment System Influent and Effluent

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Highlights

  • 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. 

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.

Overview

  • 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

Highlights

  • 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.