Hydranautics HYDRAcap MAX 40 Membrane

Product Description

Compared to conventional pretreatment, HYDRAcap MAX 40 allows for higher fluxes for RO and NF systems while maintaining longer intervals between cleanings. In some cases it replaces conventional pretreatment for potable applications, ground water recharging and water recycling. HYDRAcap is used to treat surface water, ground water, seawater and waste waters as either primary treament or as pretreatment to reverse osmosis (RO) and nanofiltration (NF).

Capillary Technology vs. Conventional Pretreatment

Significantly better filtrate quality when compared to conventional pretreatment, exhibiting 100% removal of colloidal material.
Product quality is stable even during feedwater vibrations
Single-step treatment reduces operating costs and increases efficiency
Can significantly reduce use of pretreatment chemicals
Backwash disposal is less problematic
Increased efficiency of RO membrane system design and operation, contributing to reduced capital and operational cost
Maximizes RO performance by allowing elements to operate longer with less cleaning
Low pressure operation

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HYDRAcap MAX 40 Specifications

Filtrate Flow: 7.5 –24.4 gpm (1.7 – 5.5 m³/h)
Filtrate Turbidity: ≤ 0.10 NTU
Bacteria removal: ≥ 4 log
Type Configuration: Capillary Ultrafiltration Module
Membrane Polymer: PVDF
Nominal Membrane Area: 560ft² (52m²)
Fiber Dimensions: ID 0.024” (0.6 mm), OD 0.047” (1.2 mm)
Pore size: 0.08 micron

Typical Process Conditions

Air Scour Rate: 7.3 – 9.1 acfm (12.3 – 15.4 m³/h)
Air Scour Duration: 120 – 240 seconds
Air Scour Frequency: Once every 20 – 60 minutes
Maintenance Clean Frequency: 1 – 3 times per day
Maintenance Clean Duration: 20 – 30 minutes
Disinfection Chemicals: NaOCl, ClO₂ or NH₂Cl
Cleaning Chemicals: NaOH, HCl, H₂SO₄ or Citric Acid

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Standard Operating Limits

Typical Filtrate Flux Range: 20 – 65 gfd (34 – 110 l/m²/h)
Maximum Applied Feed Pressure: 73 psig (5.0 bar)
Maximum Transmembrane Pressure 30 psig (2.0 bar)
Instantaneous Chlorine Tolerance: 5000 ppm
Maximum Chlorine Exposure: 750,000 ppm-hrs
Maximum Feed Turbidity: 300 NTU
Maximum Operating Temperature: 104°F (40°C)
pH Operating Range: 4.0 – 10.0
Cleaning pH Range: 1.0 – 13.0
Certifications: NSF61

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Surface water applications containing lower turbidities.
Wide range of high fouling applications.
A pretreatment step for desalination, treatment of surface waters and municipal and industrial effluents.

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Hydranautics HYDRAcap MAX 40 Membrane

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