BWC2000-H Containerized Brackish Water Reverse Osmosis System

In extra-large water-consuming scenarios (such as super-large towns and large industrial parks) where brackish water resources are abundant but fresh water resources are extremely scarce, desalination equipment with ultra-large capacity and high stability is crucial for ensuring water supply security. The FENIGAL BWC2000-H Containerized Brackish Water Reverse Osmosis System, with a dual-container configuration of "40ft + 40ft" as its integrated carrier, integrates a full set of high-performance desalination components and intelligent control modules. Relying on its daily 2,000-ton-level water production capacity and low energy consumption advantages, it provides a professional solution for ultra-large-scale brackish water desalination needs.

I. Core Positioning and Key Advantages of the System

(I) Basic Attributes and Treatment Capacity

As the flagship containerized model for top-scale brackish water desalination in the Desal BWC series, the BWC2000-H adopts a dual-container modular design: the pretreatment system, two-stage reverse osmosis unit, chemical cleaning and dosing system, and electrical control unit are respectively deployed in two 40ft standardized containers. No additional workshops need to be built, significantly reducing on-site construction work and land occupation costs. Designed based on the working condition of "4,000 ppm, 20°C brackish water", its rated daily fresh water output reaches 2,040 cubic meters (calculated based on a rated water production flow rate of 85 m³/h and 24-hour daily operation). This capacity can meet the daily drinking water needs of approximately 10,000 people, or support 20,000-acre agricultural irrigation and circulating water demand for large-scale power/chemical enterprises.

(II) Key Advantages

1. Rapid Commissioning and Integration: Over 95% of component installation and pipeline connection are completed in the factory. On-site operations only require connecting water inlet, power supply, and drainage interfaces, shortening the commissioning cycle to less than 20 days, which is much faster than traditional decentralized systems.

2. Strong Corrosion Resistance: High-pressure pipelines and fittings are made of Sch10 SS316 stainless steel; the container frame and inner wall are coated with heavy-duty marine anti-corrosion paint; wet-area components are made of corrosion-resistant materials such as duplex steel and SS904L, with a designed service life of more than 15 years.

3. Low-Energy Operation: Equipped with a high-efficiency high-pressure pump, IE3-class energy-saving motor, and low-energy reverse osmosis membrane, the energy consumption per unit water production is only 1.05 kWh/m³, which is 25% lower than the average energy consumption of similar equipment in the industry.

4. Four-Level Filtration Protection: Adopting a "coarse filtration + sand filter + pre-filter + main filter" process, it traps impurities with a particle size ≥ 1μm in brackish water, avoiding wear of the high-pressure pump and membrane pollution. The service life of membrane modules can be extended to 3-5 years.

5. Intelligent Operation & Maintenance and Rapid Recovery: Equipped with a Siemens PLC control system, it supports real-time monitoring of key parameters; core components are standardized universal models. In case of failure, the system can be quickly restored by replacing parts, reducing downtime to less than 4 hours.

II. Brackish Water Desalination Process and Flow

BWC2000-H adopts the core technology of "deep pretreatment + two-stage reverse osmosis" to achieve efficient desalination of brackish water through a closed-loop process. The specific steps are as follows:

1. Water Intake and Storage: A high-power intake pump extracts brackish water and sends it to a feed tank with a volume of ≥ 100 m³ for temporary storage. The water tank balances flow and pressure through a liquid level sensor and frequency conversion device to avoid the impact of inlet water fluctuations on the system.

2. In-Depth Pretreatment:

• The feed pump pressurizes the water to 4-6 barg, and simultaneously doses Poly Aluminium Chloride (PAC) to flocculate impurities and Sodium Hypochlorite (NaClO) for sterilization (residual chlorine controlled at 0.5-1.0 mg/L).

• The water flows through 10 parallel sand filters (Φ1600mm) to filter impurities with a particle size > 5 μm (the sand filter can be bypassed if turbidity < 0.3 NTU).

• Sodium Bisulfite (NaHSO₃) is dosed to remove residual chlorine (residual chlorine < 0.1 mg/L), and an anti-scalant is dosed to inhibit scaling. Finally, the water passes through a 5μm safety filter to trap tiny impurities.

3. Two-Stage Reverse Osmosis Desalination: A high-pressure pump with three parallel pumps (total power 89.4 kW) pressurizes the water to 20 barg. The water first undergoes preliminary desalination through the first-stage RO membrane (60 pieces of 8040-type membranes), then deep desalination through the second-stage RO membrane (48 pieces of 8040-type membranes), and the product water TDS is reduced to below 500 mg/L. The concentrated water is discharged after pressure relief and can be recycled for slag flushing, dust suppression, etc.

4. Product Water and Membrane Maintenance: Fresh water is stored in a product tank with a volume of ≥ 200 m³ and transported to water points as needed; the system is equipped with two sets of CIP (Cleaning in Place) devices (2 1000L water tanks + dual pumps) to regularly clean membrane modules to maintain efficiency.

III. Key Technical Parameters of BWC2000-H

The following parameters are designed based on "4,000 ppm, 20°C brackish water"：

Note: Rated parameters are designed based on standard brackish water. If the inlet water quality varies significantly, please contact the manufacturer for adjustments; rated power does not include the power of the intake pump, product water transfer pump, and air conditioner.

IV. Water Quality Standards and Applicable Scenarios

(I) Inlet and Outlet Water Quality Requirements

BWC2000-H has clear restrictions on the inlet water quality, and the outlet water meets the WHO drinking water standards. The specific parameters are as follows:

Note: Special pretreatment must be added if the inlet water contains heavy metals; EDI devices can be added to improve purity for industrial product water as needed.

(II) Applicable Scenarios

The BWC2000-H is suitable for various ultra-large brackish water desalination scenarios. Specific parameters are as follows:

• Super-Large Towns/Satellite Cities: Replace cross-regional fresh water transfer to meet the large-scale drinking water needs of remote towns.

• Ten-Thousand-Acre-Level Agricultural Bases: Treat underground brackish water to provide irrigation fresh water for crops and improve yield.

• Large Industrial Parks: Supply production water for the power and chemical industries, or treat circulating water discharge for reuse.

• Super-Large Mining Areas/Energy Bases: Ensure stable water supply for employee living areas and power plant cooling systems.

• Large Resorts/Golf Courses: Meet the ultra-large green irrigation and domestic water needs of tourists.

V. Ordering Information and Warranty Policy

(I) Core Ordering Parameters

The following is the purchasing information:

Note: The filter kit dosage is based on normal water quality; additional spare filter elements need to be purchased if the turbidity is high.

(II) Warranty Policy

If operated in accordance with the Operation Manual, the manufacturer provides a triple warranty:

• Core Equipment Warranty: 24-month warranty for high-pressure pumps, reverse osmosis membranes, control cabinets, etc. (starting from the date of qualified commissioning);

• Overall System Warranty: 12-month warranty for the entire system except for vulnerable parts (filter elements, O-rings) (starting from the date of qualified commissioning);

• Maximum Warranty Period: No more than 18 months from the date of factory shipment (whichever expires first);

• Service Response: Response within 48 hours and repair/replacement within 72 hours during the warranty period (except for remote areas).

VI. System Appearance and Manufacturer Information

(I) System Appearance Reference

(II) Manufacturer Contact Information

For inquiries about technical details or procurement, please contact us through the following methods:

• Landline: +86 0510 85163211

• Mobile Phone: +86 13646187144

• Address: Room 511, Block B, 100 Dicui Road, Binhu, Wuxi, Jiangsu, China

• Official Website: www.fgwater.com

• Email: [email protected]

For more products, please visit: https://www.fgwater.com/Containerized-Water-Purification-System/

PDF manual download address:Desal BWC series Containerized BWRO system