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.

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:

The Water Quality of Biochemical Wastewater Treatment System Influent and Effluent

The Water Quality of Reclaimed Water Treatment System Influent and Effluent

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. 

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

The Water Quality of Pilot Influent and Effluent

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.

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:

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.

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.

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

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.