Continuous Membrane Filtration (CMF) refers to a membrane filtration unit specially used for water treatment and reuse, reverse osmosis and nanofiltration pretreatment projects, and the treatment of materials with relatively high turbidity.
The CMF system adopts a highly anti-pollution hollow fiber membrane element with a unique structure and a unique air-water double washing process technology, and is equipped with specially designed pipeline valves, self-cleaning units, dosing units and automatic control units, etc., forming a closed circuit Continuous operating system. The CMF system is particularly suitable for filtering tap water, groundwater, surface water and municipal sewage after biochemical treatment to remove impurities such as bacteria, microorganisms and suspended solids. The purified water is clear and transparent, and the turbidity is close to zero.
The Principle
MF column type membrane filtration is a pressure actuation membrane separation process, it can separate the particulate matter from the liquid of the dissolved component. Highly efficient removal of Colloid, silt, algae，Cryptosporidium, Giardiasis Tyzzer, coliform, bacterium and majority virus, the elimination rate is 4~6 lg.
The Specification table of the UOF8 UOT8 series :
Membrane module type |
UOT-856 |
UOT-865 |
UOT-880 |
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Membrane module parameters |
Module material |
PVDF |
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Membrane making method |
H-TIPS |
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Effective membrane area( m2 ) |
56 |
65 |
80 |
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Intercept aperture ( um ) |
0.03 |
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Inner/outer diameter of the hollow fiber ( mm ) |
0.7--1.3 |
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Membrane module size |
Outer diameter Total Length ( mm ) |
225*1860 |
225*1985 |
225*2360 |
Inlet and permeate connector specifcation |
DN50 |
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Air inlet specification |
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Membrane module weight |
Moist weight(kg) |
48 |
50 |
70 |
Module with full water (kg) |
80 |
85 |
105 |
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Operation condition |
Fitration type |
Dead-end fltration or Cross flow fltration |
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Produced water flux ( L/m2.h ) |
40--120 |
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Maximum inlet water pressure ( kPa ) |
500 |
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Maximum TMP(kPa) |
300 |
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Operational TMP ( kPa ) |
30--150 |
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Applicable temperature range ( C ) |
5--40 |
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Air flux of doing air wash ( Nm2/h ) |
10--18 |
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Water flux of doing water washing ( m2/h ) |
1.3--2.3 |
1.5--2.7 |
1.8--3.2 |
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Cleaning operation |
pH range of doing chemical cleaning |
1--13 |
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Maximum tolerance concentration of NaCLO( ppm ) |
5000 |
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Produced Water performance |
Produced water turbidity ( NTU ) |
≤0.1 |
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Produced waterSDI ( SDI1s ) |
≤3 |
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Coliform removed |
not detected |
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Total bacterial count ( CFU/ml ) |
<3 |
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The flow chart of column hollow fiber ultrafiltration membrane modules UOT8 :
Advantage:
1. The material is PVDF ,High chemical stability2. High acid and alkali resistant and strong oxidation resistance
3. Membrane noodle is fingered hole-anisomerous structure, high ant-pollution, not easy to in-depth pollution
4. High water flux in each membrane unit, Ultra-low presure cost, long service life
5. Outside-in filter type: saving cleaning water, low operating costs
6. Excellent quality, reached advanced international standards, is highly cost-effective