Enviro Arabia 2007 (Bahrain)

Transcription

1 Enviro Arabia 2007 (Bahrain) Technological Advancement of SMBR The Submerged PURON System Deepak Raina 1

2 KMS Product Portfolio Tubular SUPER-COR FEG TM PLUS SUPER-G ULTRA-COR Tubular Tubular/Spiral Spiral INDUCOR TM SelRO ABCOR KPAK TM 2

3 KMS Product Portfolio Spiral FLUID SYSTEMS TFC S & SR MegaMagnum Magnum Hollow Fiber ROMIPURE TM PMPW TM TARGA PURON 3

4 Industrial Water & Wastewater Municipal Water & Wastewater Membranes for Food, Dairy & Beverage Processes Bio, Pharmaceutical & Chemical Processes 4

5 Development of PURON -Technology Product development at university of Aachen; Sponsored by PFAU program of NRW 500 m² membrane area 12/2001 Foundation of PURON in Aachen 07/2002 Financing by venture capital 08/ Move out of university start building up a production side Order for the largest MBR plant in Belgium (industrial water reuse) KMS aquires PURON AG Change to KMS GmbH remains brand name for KMS submerged membrane technology 5

6 Advantages of MBR over conventional WWTP conventional plants primary treatment biological step clarifier membrane bioreactor Advantages: Considerably improved water quality Ability of water reuse Reduced footprint (approx. 50 %) Avoids the problem of bulking and floating sludge 6

7 The job of membranes in MBR-technology rejection feature of the membranes membrane permeation stability of the process economic efficiency customer satisfaction central and most crucial topic to improve MBR-technology: increasing and stabilizing the permeate flux 7

8 Requirements for module design design requirements good sludge management backwashing ability high mechanical stability effective air injection equal hydraulic load low pressure losses economic requirements high packing density cost effective assembly and replacement high lifetime low cost material simple construction 8

9 Operating Problems in Double Header Modules Clogging filtrate Sludging Sedimentation of sludge in poorly aerated potting area Clogging by hairs and fibrous material at the upper end consequence: reduced filtration rate 9

10 Problems of Double Header Modules (Cont d) clogging sludging Reduction of permeate flux danger of biological growth through the membranes extensive pretreatment (fine screen with 1 mm) 10

11 The patented PURON product concept The key factor for the technological and economical success of membrane technology is the arrangement of the membranes in a technical module Sealed end PURON has copied its product concept from nature: Membrane fibers are only fixed at lower end Move freely in the water and filtrate as seaweed Upper ends of the tubes are sealed Cleaning of the membranes is done by injection of air into the center of the single header bundles Central air injection PURON has applied the patent for this single header concept with central air injection principle in all major countries of the world 11

12 The operating principle of the PURON filters The filters are submerged into the water to be filtrated Clear water is being drawn out of the membrane tubes via the lower foot element The single header principle ensures that hairs, fibrous substances and sludge will be removed safely out of the system, pre-treatment is with 3 mm perforated screens. air injection filtrate Stable operation with reduced risk of clogging and sludging. Low energy consumption. Low maintenance and cleaning demand. 12

13 Modular filter design Transferring the basic principle onto the PURON modules Cost-effective production Module row filtrate filtrate fiber support module Module element air injection 13

14 Modular structure of PURON -Membrane system fibre support permeate removal basiselement air supply Module row Adjustable free space between individual rows 14

15 View of PURON - membrane module Permeate collector permeate Air supply Mounting device Permeate removal in each row Open end fibres individually sealed Fibre support Module rows Module Frame Air distribution 15

16 High flexibility by modular design variation of module height variation of module width Variation in all module dimensions possible several rows in a module 16

17 Clogging within the outer fiber bundles Module aeration creates upward flow inside the module Problem danger for clogging This creates downward flow on the outside This leads to a cross flow in the outer membranes bundles Clogging in the top area of the outer bundles of the module 17

18 Plates on module outside to avoid clogging of outer bundles demonstration plant shows significant reduction of clogging 18

19 PURON Standard Module 19

20 The PURON membranes The heart of PURON products are: thin tubes made of inexpensive plastics (PES) 20

21 Membrane Improvements first design current design reduced hydraulic pressure loss inside the membrane fibre ~ 0,6 mm ~ 1,9 mm ~ 1,2 mm ~ 2,6 mm 21

22 Support materials to increase mechanical stability braided hollow fiber membrane outer cross section of membrane braid filter surface 10 µm 2 µm 2 µm 2 µm 2 µm 2 µm bacteria viruses 2,6 mm filtrate Source: PURON AG, 05/

23 Mechanical strength of PURON membrane PURON hollow fiber membrane 10, 5 kg No fiber breakage during operation Long membrane lifetime 10 liter bucket filled with water 23

24 Feet-elements are welded together 24

25 Membrane Module Dimensions Air Filtrate Data of a membrane module Length Width Height without mounting device 200 cm 100 cm 250 cm Filtrate removal Air Number of fiber bundles per row 9 Effective fiber length 1,8 m Membrane area 500 m² Permeate connection DN 80 Air connection DN 50 25

26 PURON demonstration plant in Simmerath Municipal Treatment Plant (Germany) Building with membranes Biology tank Foundation by the NRW-Government with 1.5 Mio. Commissioning March

27 PURON demonstration plant Simmerath 27

28 Free top ends of PURON fibers in operation 28

29 Sobelgra Maltery (Belgium) Largest industrial MBR in Belgium (8.000 m 2 membrane area) Shipment of modules: June 2004 Commissioning: October

30 Largest industrial MBR in Belgium Sobelgra MBR Maltery Parameter Influent [mg/l] Load [kg/day] Effluent [mg/l] COD BOD Suspended solids N total P total < 1 30

31 Joe White Malting Co. - Australia Industrial Water Reuse PURON MBR + MegaMagnum RO Malting company Construction of a new WWTP due to expansion of malting facility 31

32 Treatment Plant Overview Biological process tank MegaMagnum RO elements Submerged PURON modules 32

33 PURON MBR plant Installation of PURON modules 33

34 MegaMagnum RO plant MegaMagnum RO skid mounted system 3 MegaMagnum pressure vessels Commissioning: May

35 PURON reference Dendermonde (Holland) Mitsubishi replacement Module installation Biology Tank for chemical cleaning Biology (top view) 35

36 Dendermonde: Mitsubishi replacement Simple, low cost installation 36

37 Capacity [m 3 /d] PURON MBR Installed Capacity Industrial Municipal Industrial + Municipal Mar 03 Jun 03 Sep 03 Dec 03 Mar 04 Jun 04 Sep 04 Dec 04 Mar 05 Jun 05 Sep 05 Dec 05 Mar 06 Jun 06 Sep 06 Dec 06 Mar 07 Jun 07 Month 37

38 KMS results of an innovative development PURON - Membrane and module development Higher permeate fluxes Optimized sludge management (reduced clogging and sludging) Less energy consumption Reduced chemical demand Lower maintenance Longer membrane lifetime lower membrane replacement costs Decrease of membrane costs PURON technology contributes actively to MBR development 38

39 Conclusion - The vision of MBR-technology by using MBR-technology the future generation of wastewater treatment plants is supposed to supply a better water quality with half the amount of footprint at equal or even lower lifecycle costs the market is on the threshold to a sustained long-term growth PURON key component to this market there is still a high potential for optimization we are currently at the beginning of a very promising future 39

40 End of Presentation Thanks for your attention! 40