Product Description

RO 2521 series is one of the commercial membrane products, includes BW/LP (Brackish water), LE /ULP (Low Energy) and XLP (Extremely low pressure), which used in different type of the water.

Normally BW suggested use within 3000ppm;
LE used within 2000ppm;
XLP used within 1000ppm.

RO 2521 are used in a variety of household pure water machine, hospital, laboratory pure water devices and other small systems.

How to choose the different series of models on 2521 RO?

RO membrane can effectively remove suspended solids, colloids, bacteria, virus, soluble salts and other impurities from water and is widely used in chemical, pharmaceutical, food & beverage and water treatment fields. We list and analyze RO membranes from specification, performance and characteristic aspects to help you choose the right RO membrane quickly.

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BW series

Pressure range : 13-15 bar

(tested on 225psi)

TDS range : suggested under 2000ppm, maximum within 5000ppm

(higher TDS will influence its lifecyle)

Brakish water use

LE series

Pressure range : 8-10 bar

(tested on 150psi)

TDS range : suggested under 1500ppm, maximum within 3000ppm

(higher TDS will influence its lifecyle)

Surface and underground water use

XLP series

Pressure range : 7 bar

(tested on100psi)

TDS range : suggested under 1000ppm, maximum within 2000ppm

(higher TDS will influence its lifecyle)

Surface and underground water use

Products Applications

Commercial Water Purification Systems

Installed in:

Restaurants

Hotels

Schools

Hospitals

Provides clean, safe water for daily consumption and operations

Laboratory & Pilot RO Systems

Ideal for testing, research, and small pilot projects or small water purifier

Easy to install and replace due to compact size

Small-Scale Desalination Units

Remote areas

Islands

Offshore platforms

Can treat slightly saline or brackish water

Agriculture & Irrigation

Produces low-salinity water for:

Greenhouses

Hydroponics

Helps protect crops from salt damage

Why choose RO 2521
Here Are Some applications use 2521

Brackish Water Desalination (BW/LP types )

Treats groundwater, well water, and tap water with moderate salinity

Common in areas with TDS between 1,000–5,000 ppm

Used for drinking water and general-purpose water supply

Industrial Process Water Treatment

Supplies purified water for:

Food & beverage production

Electronics manufacturing

Chemical processing

Helps reduce scaling, fouling, and contamination in equipment

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Puri-guard^® Element	Permeate Flow GPD (m³/d)	Testing Pressure	Salt Rejection (%)		Tested condition
Puri-guard^® Element	Permeate Flow GPD (m³/d)	psi/MPa	Salt Rejection (%)		NaCl
2521-LP	300 (1.14)	225/1.55		99.6-99.7	2000ppm
2521-ULP	300 (1.14)	150/1.05		99.3-99.5	1000ppm
2521-XLP	300 (1.14)	100/0.69		99.0-99.2	500ppm

1. Permeate flow and salt (NaCl) rejection based on the standard test conditions. 77°F (25°C), pH 7.5, 8% ± 1.0 recovery and the specified applied pressure.

2. Minimum salt rejection: 1% less of Salt rejection marked

3. Single membrane element production flow may vary ±20%.

Operating limit

Diaphragm type	Polyamide Composite Membrane
Maximum operating temperature	113℉ (45℃)
Maximum operating pressure	150 psi (10 bar)
pH range, continuous operation	3-10 ^a
Maximum Influent SDI	5
Free chlorine tolerance	<0.1 ppm ^b

a. When pH >10, the maximum allowable temperature for continuous operation is 95℉ (35℃).

b. Under certain conditions, the presence of free chlorine and other oxidants will lead to premature failure of membranes. Therefore, it is recommended that the membrane be pretreated to remove residual free chlorine before water comes into contact with membranes.