Nanofiltration (NF) Systems

General Discription

Nano filtration (NF) is one of the four membrane technologies, which utilize pressure to effect separation of contaminants from water streams. The other three are microfiltration, ultrafiltration and reverse osmosis (RO). All of these technologies utilize semi-permeable membranes that have the ability to hold back (reject) dissolved and/or suspended solids from a water stream containing these contaminants.

Nano filtration is also becoming more widely used in food processing applications such as dairy for simultaneous concentration and partial (monovalent ion) demineralization

Key Advantages:

✅ Lower Water & Energy Consumption than RO
✅ Superior Hardness & Bivalent Ion Removal (e.g., calcium, magnesium, uranium, radium)
✅ Less Maintenance & Fouling RO or softeners
✅ Selective Mineral Retention with high contaminant rejection
✅ Efficient Filtration of Microorganisms & Organics

Designed using advanced nanotechnology and 3D process modeling, our NF systems ensure custom-built performance and reliability for high TDS water treatment across industries.

Aquatech Plus Nano filtration (APNF) Systems

Model Number	GPD	m³/day	m³/hr	Membrane Qty(4″/8″/Total)	Motor Rating(hp)	Weight(lbs)	Dimensions (L” x W” x H”)
APNF Commercial (4″) Series
APNF-1	11,700	44	1.83	9 x 4″	3	750	141 x 35 x 66
APNF-2	13,500	51	2.13	10 x 4″	3	850	109 x 35 x 66
APNF-3	19,800	75	3.13	15 x 4″	3	900	142 x 35 x 66
APNF-4	28,800	109	4.54	21 x 4″	5	1,025	144 x 35 x 64
APNF Industrial (8″) Series
APNF-4	25,200	95	3.96	4 x 8″	5	2,300	190 x 43 x 61
APNF-5	32,400	123	5.13	5 x 8″	5	2,350	230 x 43 x 61
APNF-6	38,700	146	6.08	6 x 8″	5	2,400	270 x 43 x 61
APNF-8	51,300	194	8.08	8 x 8″	5	2,500	190 x 43 x 63
APNF-10	64,800	245	10.21	10 x 8″	10	2,600	230 x 43 x 65
APNF-12	78,300	296	12.33	12 x 8″	10	2,700	190 x 43 x 75
APNF-15	97,200	368	15.33	15 x 8″	10	3,200	230 x 43 x 75
APNF-18	117,000	443	18.46	18 x 8″	15	3,500	270 x 53 x 77
APNF-20	129,600	491	20.46	20 x 8″	15	4,200	230 x 53 x 87
APNF-24	155,700	589	24.54	24 x 8″	15	4,550	270 x 53 x 88
APNF- High Capacity Industrial (8″ or more) Series
APNF-30	190,000	719	29.96	28	25	4,500	350 x 72 x 80
APNF-34	213,750	809	33.71	30	25	4,500	300 x 72 x 80
APNF-40	256,500	971	40.46	36	25	4,900	300 x 72 x 80
APNF-48	304,000	1,151	47.96	42	30	5,200	300 x 72 x 90
APNF-54	342,000	1,294	53.92	48	30	5,750	300 x 72 x 90
APNF-62	389,500	1,474	61.42	54	40	6,250	300 x 72 x 90
APNF-68	427,500	1,618	67.42	60	40	7,500	300 x 72 x 90
APNF-75	475,000	1,798	74.92	66	50	8,500	300 x 72 x 80
APNF-82	522,500	1,978	82.42	77	50	8,750	350 x 72 x 90
APNF-90	570,000	2,157	89.88	91	60	9,250	350 x 84 x 92
APNF-105	665,000	2,517	104.88	98	60	9,650	350 x 84 x 94
APNF-120	760,000	2,877	119.88	112	75	10,200	350 x 84 x 96
APNF-135	855,000	3,236	134.83	126	75	10,650	350 x 84 x 98

Operational Specifications

Maximum feed water temperature: 42°C
Feed water inlet pressure: 20–50 psi
System operating pressure: 80–125 psi
pH tolerance: 3 to 11
Feed TDS range: 0–1,000 ppm (Optional upgrade available for higher TDS)
Maximum iron: ≤ 0.05 ppm (Pre-treatment recommended)
Maximum silica: 60 ppm @ 60% recovery
H₂S & turbidity must be removed prior to NF
Hardness > 1 GPG requires antiscalant dosing
Recovery must be adjusted appropriately for high TDS or scaling-prone waters

Standard Features

Rugged powder-coated carbon steel frame
High-efficiency 8” TFC spiral wound membranes
Stainless steel multistage pump with TEFC motor
Durable FRP membrane housings
5-micron cartridge pre-filter for membrane protection
PLC-based control panel with automated sequences
Liquid-filled pressure gauges and safety switches
Permeate conductivity monitoring
Flow meters for permeate and concentrate streams

460V / 3Ph / 60Hz electrical compatibility

Available Customization Options

Remote monitoring and control interface
Feed water conductivity monitoring
Feed/Permeate blending system
Membrane cleaning skid
Automatic system flushing (hourly or programmable)
Voltage options: 220V / 380–415V / 50 or 60 Hz
Level-based tank controls (product water tank)
Feed pH & ORP controllers with integrated sensors
Totalizing flow meters
Dosing systems: antiscalant, pH correction, chlorine/sodium bisulfite
Pretreatment options: sand filters, iron filters, water softeners
UV sterilization & post-NF polishing
Containerized systems for plug-and-play setup
Export-grade packaging for overseas projects

Applications of Aquatech Plus NF Systems

Food & Beverage – ingredient water, concentration, desalting
Pharmaceuticals & Healthcare – ultrapure process water
Textiles & Dyeing – color and hardness removal
Chemical Manufacturing – process stream purification
Mining & Power – silica and sulfate control
Municipal & Rural Water – high hardness and TDS reduction
Water Reuse & ZLD Systems – NF as pre-RO polishing step
Bottled Water & Beverage Plants – consistent taste and mineral control
Desalination of food, dairy and beverage products or byproducts
Partial desalination of whey, UF permeate or retentate as required
Desalination of dyes and optical brighteners
Purification of spent clean-in-place (CIP) chemicals
Color reduction or manipulation of food products
Concentration of food, dairy and beverage products or byproducts
Fermentation byproduct concentration

Aquatech Plus brings advanced membrane-based treatment solutions tailored for industrial efficiency, longevity, and compliance with global standards. Let us help you design the perfect NF system for your process.

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