High Rejection NF Industrial Nanofiltration Dnf1/Dnf2 4040 8040 Nanofiltration Membrane Water Purifier for Pretreatment of RO System

• Membrane Type: Hollow
• Type: NF
• Membrane Area: 37sqm
• Structure: Spiral-Wound
• Material: Aromatic Polyamide
• Thickness of The Inlet Grid: 34mil
• Model NO.: DNF1/DNF2 4040 8040
• Transport Package: Standard Export Cartons/ Pallets
• Specification: 1016mm*201mm*29mm
• Trademark: SHUIYI or Customized
• Origin: Made in China
• Production Capacity: 10000000m2/ Year

Product Description

About Shuiyi: 

After years of honed in the competition, SHUIYI has become one of the few manufacturers in the industry with a full range of membrane technologies and products including microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO).
Our membrane products are widely used in the application fields of municipal sewage reclamation, industrial wastewater zero discharge, reclaimed water reuse, pure water preparation, highly polluting wastewater treatment, river restoration, decentralized rural sewage treatment, process concentration, and separation, etc., with rich application experience and engineering project cases.

Introduction

Demole^® Series of nanofiltration membrane is specially developed for the material concentration and separation fields. They are suitable for industries such as salts mine recycling, zero discharge of high saltwater, material separation, and concentration.

DNF 1 has a high removal rate of total organic carbon (TOC) and a medium rejection rate of inorganics salts. It is embedded with ultra-low pressure and pollution-resistance membrane preparation technology to realize the double improvement of service life cut down the energy consumption.

DNF2 has a high rejection rate for multivalent ions, a low rejection rate for monovalent ions, accurate molecular weight interception, and is also suitable for the separation and purification of small molecule pharmaceutical drugs.


Features

1. High rejection rate for element whose weight > 300.
2. Reliable and stable permeate water quality;
3. Excellent chemical cleaning resistance
4. Advanced anti-fouling layer, guarantees a long service life

Specifications

Membrane Specifications	Model	DNF1-8040	DNF1-4040
	Material	Aromatic Polyamide
	Structure	Spiral wound
	Active Membrane Area	37 m^2	7.6 m^2
	Spacer Thickness	34 mil
Performance	Standard Test Solution	2000 mg/L MgSO4 500 mg/L NaCl
	Operation Pressure	0.5 MPa
	Test Temperature	25
	Recovery	15%
	pH	6.5-7
	Permeate Flow Rate (m^3/d) /GPD	40/10500	8/2100
	Rejection Rate (%)	≥ 98 (MgSO4) 30±10 (NaCl)
Application Limits	Max. Operation Pressure (MPa)/GPM	4.1/600
	Max. Feed Flow (m^3/h)/GPM	17/75	3.6/16
	Feed Temperature Range (^oC)	5-45
	Feed pH Range	3-10
	Cleaning pH Range	2-11
	Max. Feed Turbidity	1.0 NTU
	Max. Feed SDI15	5
	Residual Chlorine Control	<0.1
	Max. Pressure Drop of Single Element	15 psi

 

Membrane Specifications	Model	DNF2-8040	DNF2-4040
	Material	Aromatic Polyamide
	Structure	Spiral wound
	Active Membrane Area	37 m^2	7.6 m^2
	Spacer Thickness	34 mil
Performance	Standard Test Solution	2000 mg/L MgSO4 500 mg/L NaCl
	Operation Pressure	0.75 MPa
	Test Temperature	25
	Recovery	15%
	pH	6.5-7
	Permeate Flow Rate (m^3/d) /GPD	38/10000	7.6/2000
	Rejection Rate (%)	≥ 98 (MgSO4) 60±10 (NaCl)
Application Limits	Max. Operation Pressure (MPa)/GPM	4.1/600
	Max. Feed Flow (m^3/h)/GPM	17/75	3.6/16
	Feed Temperature Range (^oC)	5-45
	Feed pH Range	3-10
	Cleaning pH Range	2-11
	Max. Feed Turbidity	1.0 NTU
	Max. Feed SDI15	5
	Residual Chlorine Control	<0.1
	Max. Pressure Drop of Single Element	15 psi

PS. 1. The performance parameters area measured after 30 minutes of stable operation of the system
2. The deviation range of water yield is ± 15%

Application Fields:

1. Halogen refining industry
2. Salt mine recycling
3. Food Concentration
4. Purification in the medicine industry

Applications

1. Water purification
2. Reclaim water reuse
3. Cooling water treatment
4. Boiler water treatment