CFD optimized woven filter media for wastewater application

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1 Engineering Conferences International ECI Digital Archives Wastewater and Biosolids Treatment and Reuse: Bridging Modeling and Experimental Studies Proceedings Spring CFD optimized woven filter media for wastewater application Markus Knefel GKD Follow this and additional works at: Part of the Environmental Engineering Commons Recommended Citation Markus Knefel, "CFD optimized woven filter media for wastewater application" in "Wastewater and Biosolids Treatment and Reuse: Bridging Modeling and Experimental Studies", Dr. Domenico Santoro, Trojan Technologies and Western University Eds, ECI Symposium Series, (2014). This Conference Proceeding is brought to you for free and open access by the Proceedings at ECI Digital Archives. It has been accepted for inclusion in Wastewater and Biosolids Treatment and Reuse: Bridging Modeling and Experimental Studies by an authorized administrator of ECI Digital Archives. For more information, please contact

2 CFD OPTIMIZED WOVEN FILTER MEDIA FOR WASTEWATER APPLICATION (BY USING AND ) SLIDE 1

3 HEADQUARTER IN DUEREN, GERMANY FAMILY-OWNED, FOUNDED IN EMPLOYEES IN DUEREN 623 EMPLOYEES WORLDWIDE (January 2013) SLIDE 2

4 GKD World Wide Weave 01. GKD GERMANY, Dueren (Headquarter) 02. GKD UK, Sherburn in Elmet 03. GKD FRANCE, La Roque d Anthéron 04. GKD SPAIN, Barcelona 05. GKD USA, Cambridge 06. GKD LATINAMERICA, Santiago de Chile 07. GKD SOUTH AFRICA, Randfontein 08. GKD INDIA, Jaipur 09. GKD CHINA, Beijing 10. GKD MIDDLE EAST, Dubai 11. GKD MIDDLE EAST, Doha SLIDE 3

5 ALIMINI BEACH SLIDE 4

6 SLIDE 5

7 SLIDE 6

8 CONSTRUCTION OF ELEMENTS SLIDE 7

9 SOME OF OUR APPLICATIONS SLIDE 8

10 SOME OF OUR APPLICATIONS SLIDE 9

11 APPLICATION E.G. SLUDGE DEWATERING VISUALIZATION OF WEAROUT SLIDE 10

12 APPLICATION E.G. ROTARY DISC FILTER SLIDE 11

13 GEODICT S TOOL: WEAVEGEO SLIDE 12

14 GEODICT S TOOL: WEAVEGEO SLIDE 13

15 DETERMINATION OF BIGGEST OPENING SLIDE 14

16 GEODICT S TOOL: FLOWDICT 2D VELOCITY THROUGH A WIRE MESH SLIDE 15

17 CALCULATION OF PERMEABILITY SLIDE 16

18 COMPARISON: CFD SIMULATION RESULTS AND MEASUREMENTS SLIDE 17

19 VIRTUAL STRUCTURE REAL STRUCTURE CALCULATION OF FILTRATION EFFICIENCY SLIDE 18

20 CALCULATION OF OVERALL FILTRATION EFFICIENCY SLIDE 19

21 ANALYSIS OF PARTICLE RETENTION LAYERS SLIDE 20

22 ANALYSIS OF PARTICLE RETENTION LAYERS SLIDE 21

23 CALCULATED FLOW INSIDE A FILTER HOUSING USING SLIDE 22

24 CALCULATED BACKFLUSHING OF A FILTER CANDLEY USING SLIDE 23

25 CALCULATED BACKFLUSHING OF A FILTER CANDLEY USING SLIDE 24

26 USE OF ODW IN VERY FINE WATER FILTRATION SLIDE 25

27 CUSTOMER S PREVIOUS PRODUCT: PERFORATED PLATE (HONEYCOMB DESIGN) MESH + SLIDE 26

28 SIMULATED STRUCTURE SLIDE 27

29 SIMULATED STRUCTURE SLIDE 28

30 SIMULATED STRUCTURE No active filtration area above the perforated plate SLIDE 29

31 SIMULATED STRUCTURE No active filtration area above the perforated plate SLIDE 30

32 2 problems: 1. ~ 30.6% less active filtration area due to the perforated plate 2. Algae grow in those zones! SLIDE 31

33 OPTIMIZED DUTCH WEAVE (ODW) Very small openings fine filtration SLIDE 32

34 COMPARISON BETWEEN ODW AND 500 MESH OPENING TENSILE STRENGTH (WARP DIRECTION) TENSILE STRENGTH (WEFT DIRECTION) µm N/mm N/mm 500 mesh ODW (-56%) 11.5 (+64%) 15.6 (+105%) ODW (-44%) 19.9 (+184%) 18.6 (+145%) ODW (-28%) 20.1 (+187%) 19.5 (+156%) SLIDE 33

35 INTERFERENCE RESISTANCE*1 WORST CASE SCENARIO A active,2d : 21.4% FIRST LAYER OF PARTICLES EXTREMLY INFLUENCE THE TOTAL PRESSURE DROP A active,2d : 29.3% * 1 : TICHY, J., PHD WORK AT UNIVERSITY KAISERSLAUTERN (2007) SLIDE 34

36 SLOT PORE SHAPE ONLY SMALL PARTICLES CAN PASS THROUGH HIGH PERMEABILITY NO / LESS CLOGGING SLIDE 35

37 NEXT GKD S PROPOSAL FOR OPTIMIZATION: NOT TO VERTICALLY BACK-FLUSH THE ODW, BUT DIAGONAL. vertical diagonal 16% MORE EFFECTIVE SLIDE 36

38 CONCLUSION CFD SIMULATION IS A POWERFUL TOOL TO UNDERSTAND WHAT HAPPENS INSIDE! SOME WOVEN WIRE MESHES ARE ENGINEERED PRODUCTS! SLIDE 37