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Case Studies of Ultrafiltration Membrane
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Case Studies

Highly-antifouling PVDF membrane products have entered the international market and are being used normally worldwide.
For more information, please see the product page, PVDF Ultrafiltration Membrane.

Ultrafiltration Membrane

Through the transformation of technology industrialization and products performance improvement, the large-scale and continuous production of highly-antifouling PVDF hollow fiber membranes has been realized. The ultrafiltration membrane has fully reached the standard and officially launched to the market in batches. And its productivity is up to 1.2 million square meters every year.

Projects

Project: Zero Discharge of Papermaking Wastewater
Construction scale: 40000 m3/d
Process: Pretreatment – UF – RO – Post processing
Operation time: 2013
The project has saved 50% of the investment and operating costs than the sewage discharging project.
 
Performances comparison under the same conditions Highly-antifouling PVDF membranes Normal PVDF membranes
Water flux, LMH 40 – 45 < 25
TMP, bar ~0.5 1.0 – 1.5
Project: Papermaking Tail Water Reuse Project
Construction scale: 17000 m3/d (first stage: 11000 m3/d, second stage: 6000 m3/d)
Process: Pretreatment – UF – RO
Operation time: 2015
 
Performances comparison under the same conditions Highly-antifouling PVDF membranes Normal PVDF membranes
Water flux, LMH >55 <22
TMP, bar ~0.5 1.0 – 1.5
Project: Chemical Wastewater Treatment Project
Construction scale: 1440 m3/d
Process: Pretreatment – UF – Ro
Operation time: 2014
 
Performances comparison under the same conditions Highly-antifouling PVDF membranes Normal PVDF membranes
Water flux, LMH 50 - 64 <26
TMP, bar 0.5 – 1.0 1.5 – 2.0
Project: Power Plant Water Treatment Project
Construction scale: 4800 m3/d
Process: Pretreatment – UF – RO
Operation time: 2014
Performances comparison under the same conditions Highly-antifouling PVDF membranes Normal PVDF membranes
Water flux, LMH >60 <30
TMP, bar 0.5 – 1.0 1.5 – 2.0
Project: Coal Mine Wastewater Treatment Project
Construction scale: 6000 m3/d
Process: Pretreatment – UF – RO – Mixed bed
Operation time: 2012
Performances comparison under the same conditions Highly-antifouling PVDF membranes Normal PVDF membranes
Water flux, LMH ~60 <30
TMP, bar 0.5 – 1.0 1.5 – 2.0
Project: Domestic Wastewater Treatment Project
Construction scale: 100 t/d
Process: Pretreatment – Facultative reaction – MBR
Operation time: 2019
Parameters Feed Water Produced Water
COD (mg/L) 200-400 ≤50
BOD (mg/L) ≤200 ≤10
TN(mg/L) ≤50 ≤15
pH 6-9 6-9
SS ≤200 ≤5
NH3-N ≤30 ≤5(Summer); ≤50(Winter)
TP ≤3 ≤0.5
Turbidity   ≤0.5
Project: Lithium Carbonate Industrialization of Minmetals Salt Lake
Construction scale: 20000 t/d
Process: Multi-media filter – UF – NF – RO – EDI – Deposited lithium refining
Operation time: 2018
Project: Domestic Sewage Treatment
Construction scale: 150 t/d
Process: Pretreatment – Anaerobic – Aerobic  – MBR (J21)
Operation time: 2018
Parameters Feed Water Produced Water
COD（mg/L） 100~120 ≤30
pH 6-9 6-9
SS ≤30 ≤5
NH3-N ≤30 ≤5
TP ≤3 ≤0.5
Turbidity   ≤0.1
Project: Municipal Sewage Treatment Project
Construction scale: 3000 t/d
Process: Grille – Anaerobic – MBR
Operation time: 2019
Parameters Feed Water Produced Water
COD (mg/L) 200-400 ≤30
BOD (mg/L) ≤200 ≤10
TN (mg/L) ≤50 ≤15
pH 6-9 6-9
SS ≤200 ≤5
NH3-N ≤30 ≤5 (Summer); ≤8 (Winter)
TP ≤3 ≤0.5
Turbidity   ≤0.1
Project: Petrochemical Wastewater Treatment
Construction scale: 3000 t/d
Process:
Regulation pool – Membrane grille – Anaerobic pool – Aerobic pool – MBR pool  – Clean water pool
Operation time: 2019
Parameters
Unit Limit
COD（mg/L） mg/L ≤500
BOD（mg/L） mg/L ≤300
TSS mg/L ≤150
NH3-N mg/L ≤50
Animal and vegetable oils mg/L ≤30
Mineral oil mg/L ≤3
PH   6-9

Other Cases

No Project name Construction scale Main process Operation time
1 Municipal Wastewater Recycling 50000 t/d Pretreatment + UF + RO 2019
2 Steel Wastewater Reuse 50000 t/d Pretreatment + UF + RO + EDI 2018
3 Metallurgical Wastewater Reuse 3500 m3/d Pretreatment + UF + RO + ED + MVR 2017
4 Papermaking Wastewater Treatment 25000 m3/d Pretreatment + UF+ RO 2016
5 Desalination Water Treatment 8000 m3/d Pretreatment + UF + RO 2016
6 Chemical Wastewater Reuse 4500 m3/d O₃ + UF + RO 2016
7 Power Plant Wastewater Reuse 14400 m3/d Pretreatment + UF + RO + Mixed bed 2016
8 Papermaking Wastewater Reuse 22800 m3/d O₃ + UF + RO 2016
9 Pharmaceutical Wastewater Reuse 20000 m3/d O₃ + UF + RO 2015
10 Wastewater Reuse 4400 m3/d Pretreatment + UF + RO 2014
11 High-Concentrated Chemical Wastewater Reuse 500 m3/d Pretreatment + UF + RO 2014
12 Demonstration Project of Wastewater Reuse 40000 m3/d Membranes Integrated Systems 2013
13 Power Plant Wastewater Reuse 12000 m3/d Pretreatment + UF + RO + Mixed bed 2013
14 Highly Polluted Surface Water Purification 12000 m3/d Pretreatment + UF 2013
15 Pharmaceutical Wastewater Reuse 18000 m3/d Pretreatment + UF + RO + Mixed bed 2012
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