The best brackish desalination technology company in china
XinJieYuan manufactures a full range of standard brackish water desalination Reverse Osmosis (RO) systems and offers fully customizable equipment services. Our engineers analyze your raw water quality and tailor a water treatment solution. We provide up to 18 months of after-sales service, offering 24/7 comprehensive support to ensure your water quality.
How to judge raw water is brackish water or not?
Brackish water is a type of water that falls between freshwater and seawater. It is commonly found in groundwater and coastal water. If the raw water tastes slightly to moderately salty and bitter, it is brackish water. if EC is between 1,500 and 25,000 μS/cm or TDS (total dissolved solids) is 1,000–15,000 mg/L, the raw water is brackish water.
How difficult is it to desalinate brackish water?
- Complex and Unstable Composition: Brackish water contains various ions, such as Na⁺, Ca²⁺, Mg²⁺, Cl⁻, SO₄²⁻, and HCO₃⁻; it also contains impurities such as organic matter, iron, manganese, silicon, fluorine, arsenic, and sulfides; the proportions of these ions vary greatly and rapidly in different regions.
- Strong Tendency to Fouling and Pollution: Ca²⁺and Mg²⁺in brackish water react with HCO₃⁻and SO²⁻to form scale such as calcium carbonate and calcium sulfate; Fe and Mn are easily oxidized and deposited; organic matter and colloids clog membrane pores; these problems severely reduce the flux of reverse osmosis (RO) membrane systems and increase maintenance costs.
- High Osmotic Pressure and High Energy Consumption: The osmotic pressure of brackish water is several times higher than that of fresh water, requiring higher pressure to drive the membrane system. ro systems typically require an operating pressure of 1~3 MPa; energy consumption increases exponentially with increasing salinity; therefore, brackish water desalination consumes 2~4 times more energy than ordinary groundwater or tap water.
What is the key to brackish desalination system?
The key to efficient operation of brackish water desalination reverse osmosis systems lies in a successful pretreatment system. Different pretreatment systems are matched according to the raw water quality conditions.
- Brackish water contains a large amount of impurities, particulate matter, and colloids, requiring a multi-media filter (MMF): quartz sand + manganese sand for removal.
- Brackish water has high levels of Ca²⁺, Mg²⁺, HCO₃⁻, and SO₄²⁻, making it highly prone to scaling. Therefore, a scale inhibitor dosing system needs to be added to the brackish water desalination reverse osmosis system to control CaSO₄, BaSO₄, and SiO₂ Scale inhibitors generally need to be purchased locally.
- Fe²⁺and Mn²⁺in brackish water can cause membrane "oxidative clogging," requiring the membrane to pass through a manganese sand filter to remove oxidized precipitates.
What is the principle of brackish desalination system?
A brackish water desalination reverse osmosis system uses a high-pressure pump to pressurize slightly brackish or brine water, forcing it to impact the surface of a semi-permeable membrane (reverse osmosis membrane) containing micropores.
Therefore, only water molecules can pass through these micropores, while impurities such as salts, particles, minerals, and other organic matter are blocked. These micropores have a strong filtration capacity, effectively blocking bacteria and pathogenic microorganisms. Ultimately, you obtain clean, pure water.
How should the concentrated water be treated in brackish desalination?
The concentrated water, containing minerals and other organic matter, will be discharged into the brine stream and eventually flow into the sewer system. Alternatively, it can be periodically stored in a semi-underground sump and discharged periodically by water trucks, but never returned to the original water source.
What advantages does brackish desalination system have?
Compared to other suppliers in the Chinese market, XJY's brackish water desalination equipment has the following advantages:
(1) High raw water purification rate and low wastewater discharge.
(2) Supports both solar and electric power systems, resulting in low energy consumption.
(3) High pollutant removal rate, with salinity removal reaching 96%-99%.
(4) The equipment offers the best cost-performance ratio and is competitively priced.
If interested, please send your water quality test report, or relevant data on salinity/TDS/conductivity. XJY's engineers will provide you with the best water solution.
Contact us
Name: Cliff Mok
Mobile phone: +86 17817887719