Seawater Desalination Technology

1.Mega-scale Seawater Desalination Technology

The biggest market of mega-scale desalination project is still in the Middle East, and the process design in the Middle East has been optimized maximumly. At present, the cost of seawater desalination in the Middle East has been reduced to about 3 yuan, which is fully suitable for municipal potable water.

Sea water desalination process flow chart

China's desalination started late, and there are few mega-scale seawater desalination projects. The traditional design philosophy leads to high cost of domestic desalination of more than 5 yuan per ton of water, which restricts the development of China's desalination industry.

       Large seawater desalination project ultrafiltration treatment center

 SWRO Treatment Centre, a large desalination project

Greenism has been engaged in the field of Mega- scale seawater desalination for many years, and gained rich experience especially in the Middle East high-salt and low-turbidity seawater and domestic low-salt and high-turbidity seawater. At the same time, our company has reached the top level in the field of mega-scale seawater desalination in China through cooperating with overseas water companies and design institutes such as Abengoa, METITO, FISIA and Doosan etc.

Power center for large desalination projects

 After full overseas competition and technology accumulation, Greenism has formed three advantages in mega-scale seawater desalination projects：

 1. Prediction and analysis of seawater quality. Combining not only the existing water quality report, but also the integration and rationalization of sea area conditions, industrial development direction and other aspects of information, plus Greenism's exclusive experience, better optimization of the design thus can be made;

2. Different from the rigid template design mode of general seawater desalination project, Greenism carries out customized tailored design according to the water quality and project conditions, and introduces the most advanced international pretreatment design experience to ensure the long-term, stable and efficient operation of membrane system;

3. The potential of equipment and system can be integrated better by using state-to-the-art design that has three primary centers, therefore, energy consumption and operating costs can be saved greatly;

The whole plant of seawater desalination project

2. Seawater Desalination Technology for Comprehensive Utilization of Water Salt Cogeneration

The main reasons restricting the promotion of seawater desalination are the high cost per ton of aquatic water and the waste of resources and possible environmental risks caused by the discharge of all concentrated water from the system.

SWRO Treatment and Power Center, a very large desalination project

At the same time, the chlor-alkali industry in some coastal areas of China is prosperous, but with the exploitation and use of a large number of brine, the quality of brine is declining, the reserves are decreasing, and the groundwater level of brine is declining, which is becoming a huge problem for the local salt industry and its related chemical industry.

3d renderings of seawater desalination system and salinization

Combined with the characteristics of mega-scale seawater desalination process and the demand of chlor-alkali chemical industry, after a long-term field investigation and a large number of experiments, Greenism introduced the membrane seawater desalination process as the core. After comprehensive treatment, the desalinated concentrated brine is used as the raw material of chemical industry to carry out water salt co- production and expand the desalination industry chain.

Desalination of seawater to extract salt

The popularization of this technology can not only produce a large amount of fresh water, but also effectively alleviate the local water shortage. At the same time, there is no concentrated water discharged from the whole desalination system, which alleviates the progress of raw materials in the chemical industry and comprehensively improves the utilization of seawater data.