REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 REWARD

1 st Technical-Meeting 15 – 16 Dec 2004 Agenda – 13.00Arrival with possibility to have lunch at the Student's Canteen – 13.10Presentation of the meeting’s agenda – 16.00combined filter and ozone process: - objectives - technologies based on a structure proposed by Klaus Padtberg definition of standard soil suggestion of Tobias Ausländer next steps: - minimum saturation time - ozone generation 18.00end of the first day 19.00dinner in a „Kneipe“ in Steinfurt

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Agenda – 9.00arrival 9.00 – 12.30next steps: filtering filtering and dishwasher test bed is it necessary to modify the experimental dishwasher at FH Münster? definition of measurands methods of ozone detection – 13.00next meeting, miscellaneous 13.00end of the meeting possibility to have lunch at the students canteen

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Objectives of this Technical Meeting Discussing and deciding the working steps for the next 3 months –wp1.1, wp1.4 –wp5.1, wp5.2, wp5.3, wp5.5 –wp6.1, wp6.2 Deciding on the combination ozone and MP-Filters Deciding the role of ozone: –cleaning –sanitizing –both

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Gantt-diagram

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Consumables consumables and prices in € Seakingmechanical parts for system development20000 Millenniumporebasic material for membrane development12000 Copperlinemechanical and electronic parts for ozone generator optimization5000 FH Münstermechanical subsystem for filtering (FHS)15000 fittings, pipes for system construction (FHS)7000 sensors and sensorelectronics for in-process control of ozone (FHR)12000 sensors and sensorelectronics for in-process control of filter efficiency (FHR)12000 chemicals (for water quality analysis) (FHS)5000 control electronics for system design (FHR) K.U. Leuvengas handling systems, flow meters and regulators10000 ozone sensing spare units (gas and liquid phase)15000 pipe tubings end connectors (PFA,stainlees steel)7000 gas consumption (oxygen, nitrogen)10000 chemicals (analysis, ozone removal trap, AOP-adjustment)10000 ozone source subsystems (spare parts)

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Ozone for extended sanitizing Reuse water from dual rinse for rinse ! drinking water quality Use water from dual rinse for 1 st filling of machine at startup ! Hygienic and clean water is needed ! Filter wash water for longer operating life of water ! Closed water cycle waste water to potable water Sensor development ! ware detection (size & material) !

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 scenario 1 use recupareted water after rinsing, here „Potable water quality is necessary“: but it is very hard to achieve this quality because of anorganic contaminations. is „potable water“ really necessary? MP ultrafiltration works up from ~ Daltons, sugars, salts are not filtered out rinsing shall: remove detergents, lower PH-value, speck removal by prerinsing=postwash what has to be investigated: –ph- increase can be inhibited by adding acid? –how much recycling can be done, conclusion: –stabilize the process in the rinse step for a steady process, reuse water from prerinse for final rinse by filtering and adding acids für neutralisation –what is the minimum amount of potable water to fullfil the regulations next steps: –check the DIN regulations until tomorrow morning ( T. Ausländer) –requirement specification from the end user: washing process, regulations, law…

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 scenario 1: role of ozone decolourizing desinfection increase solubility of contaminants could possibily help neutralisation conclusion: –ozone is important in scenario 1

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 scenario 2 water from prewash is stored in an additional tank and used for washing in the next run ozone must be used for sanitizing

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 scenario 3 filtering water from wash and prewash process compared to filtering in the final steps the contaminants are coarser prefiltering with sieves has to be used, particles should be smaller than about 500µm for microfiltering a 200 µm filter arrangement would be suitable (manufacturer: AUXILL ) might be possible to use existing pump for the filtrations, but for simplicity a test bed with pumps of it own will be used there is a trade off between power needed for pumping and filtration surface: the larger the filter, the lower the power conclusion: –scenario 3 should be investigated further –filter lay out is strongly dependend on boundary conditions: costs for energy, pumps, membranes….. –what is the effect of strongly soiled cleaning water on the ware? has to be investigated further / connection with the rinse step water reduction

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 scenario 3: role of ozone sanitizing residual water in the machine at the end of a shift compatibility of filter material with ozonated water? (important in all scenarios), this has to be checked!

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 scenario long term target

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Definition of Standard Soil standard soil for investigating the process water, not cleaning efficiency what has to be specified –components, incl. brand –preparation –temperature use „moving target specification“: –start with a specification, check it regularly by real soil from canteens –modify standard if necessary components: –based on „Hobart-Steinfurt-Standard“ mashed potatoes, brown gravy, white sauce –in addition: sugar detergents T. Ausländer will circulate a suggestion within 1 month partners can comment then a 1 st version will be defined

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Dinner in a Westphalian “Kneipe”

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Dinner  name: VIP, at one side of Cafe Schwan Steinstrasse

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Agenda – 13.00Arrival with possibility to have lunch at the Student's Canteen – 13.10Presentation of the meeting’s agenda – 16.00combined filter and ozone process: - objectives - technologies based on a structure proposed by Klaus Padtberg definition of standard soil suggestion of Tobias Ausländer next steps: - minimum saturation time - ozone generation 18.00end of the first day 19.00dinner in a „Kneipe“ in Steinfurt

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Agenda – 9.00arrival 9.00 – 12.30next steps: filtering filtering and dishwasher test bed is it necessary to modify the experimental dishwasher at FH Münster? definition of measurands methods of ozone detection – 13.00next meeting, miscellaneous 13.00end of the meeting possibility to have lunch at the students canteen

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Gantt-diagram

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Next steps: minimizing saturation time and ozone generation Ozone generator ► definition of the characteristics: gas phase concentration of ozone and gas flow range (  calculate amount of grams ozone / hour) Mass transfer ► which device will be used to achieve maximum kLa ? ( possible testing by LPAC ? ) the ozone / water tank ► in situ production of ozone or use of a storage tank ? ► in the case of a storage tank: volume ? Dimensions ? Sensoring ozone in the storage tank ► need for [O3]gas measurement ? ► need for [O3]liq measurement ?  ORP-electrode: testing by LPAC  other devices (in case ORP is not usable because it is perhaps too pH-sensitive) ? Compatibility ozone – filter system ( possible testing LPAC ? ) Lab-scale testing (oxidation process) ► building of this lab-scale chamber: who ? Characteristics of the chamber ?

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Next steps: minimizing saturation time and ozone generation what has to be tested –test bed for ozone transfer optimization with water pump, venturi, millenniumpore pipes „wallfilter“ approach from MP should be taken into account to decide –specification of requirements: KUL, CP, Hobart, FHS –sketch / draft of a system with relevant parameters: FHS –design / construction at Seaking

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Next steps: filtering specify requirements for the test bed: MP, FHS, Hobart sketch / design: MP construction of the test bed : FHS

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 filtering sketch of a filter system

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Coffee Break

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Next steps: definition of measurands measurands for process control in the machine –water temperature yes –turbidity yes –foam creation yes –water flow yes –ph-value yes –ozone concentration in water yes –ozone concentration in air within machine no –ozone concentration in air outside of machine YES

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 ozone measurement ozone concentration outside the machine has to be monitored because of worker safety are German and European regulations consistent? ozone in water: –measuring range? –reproducibility? –ORP electrode will be tested at KUL in air: –measuring range –reproducibility DIN important, EN 1278 discussion between KUL, FHS, FHR, CP, Hobart

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Next meeting „ozone meeting“ will be held according to the needs of KUL and CP „filter meeting“ one day before the next technical meeting technical meeting for all: –at FH, , , 13.00

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Structure of REWARD WP 1 ozone proces. LPAC WP 2 oxydization process LPAC WP 3 recycling LPAC WP 4 safety FH-S WP 5 Filtration MP WP 6 Testing FH-R WP 7 machine des. Seaking WP 8 machine build up Seaking WP 9 field valid. FH-S WP 10 management FH-R microfiltering ozone cleaning system design intermediate results

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Lunch in the Students Canteen

REWARD 1 st Technical-Meeting 15 – 16 Dec 2004 Thank you very much merry christmas and a happy new year