AS-NF-8040 Ultra-High Flux NF | 37.8m³/d | Li/Mg Separation

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AS-NF-8040 Acid-Resistant NF Membrane Element

The low-energy acid-resistant industrial nanofiltration series (AS-NF) is a type of selective special separation membrane element.

Product Introduction

The low-energy acid-resistant industrial nanofiltration series (AS-NF) is a type of selective special separation membrane element. It has ultra-high operating flux (~10 LMH/bar). Efficient separation of Mg2+ and Li+ in a strong acid environment, with a separation coefficient of approximately 50. The membrane elements can withstand harsh acidic media including 20% H2SO4, 20% HCl, 5% HNO3, and 30% H3PO4.

Application Field

Hydrometallurgy / Non-ferrous Metals Industry

Waste acid recovery and Acid Washing Industry

Fine Chemicals & Pharmaceutical Intermediates

The electronics and Surface Treatment Industry

Separation of special chemical materials

Parameters

Model

Typical Stabilized

Salt Rejection

(%)

Minimum

Salt Rejection

(%)

Permeate Flow Rate GPD（m3/d）

Area ft² (m²)

AS-NF-8040

98.0

97.0%

10000 (37.8)

365 (33.9)

Test Condition

Test Solution	Tem.（ ℃）	pH	Pressure psi (MPa)	Recovery（%）
2000mg/L MgCl	25	7.0	110 psi (0.76MPa)	15

Test Condition: 2000mg/L MgCl, 110 psi, 25℃, pH7

Flow rates for individual elements may vary but will be no more than ±15%

Active area guaranteed ±3%

Using Conditions

Maximum Operating Pressure	600 psi(4.14MPa)
Maximum Operating Temperature	60 ℃
Maximum Feed Flow	75GPM (17m3/h)
Maximum Feed Silt Density Index (SDI)	5.0
Application Environment (Acid)	20% H2SO4, 20% HCl, 5% HNO3, and 30% H3PO4.
Short-Term Cleaning (30 min.) pH Range	1-13
Maximum Pressure Drop Per Element	15psi (0.1Mpa)

Cautions

● When the membrane element is first used, the water produced during the first hour should be discharged and not used.

● When the membrane element is manufactured, the dry type membrane element has no protective liquid. Once the element gets wet, it should remain in a moist state.

● The feed water pressure should be gradually increased within a time range of 30-60 seconds. Otherwise, it may cause irreversible damage to the membrane element.

● At any time, back pressure on the water production side should be avoided.

● The wet type membrane element is tested with water before leaving the factory, and is stored with a 1.5% sodium bisulfite solution (in winter, 10% propylene glycol antifreeze solution needs to be added). Then it is vacuum-packed.

● When the system is shut down for a long time, to prevent the growth of microorganisms, it is recommended to immerse the membrane element in a 1.5% (by weight) sodium bisulfite protective liquid and replace the protective liquid regularly.

● Users must strictly follow the operation limits and rules set in this manual. Otherwise, the company will not bear any consequences arising therefrom.

● Users are strictly prohibited from using any chemical substances that are destructive to the membrane element during storage and operation. If such chemical substances are used, the company will not bear any consequences arising therefrom.

Dimensions and Packaging

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Anhui Cooperate Environmental Technology Co., Ltd.