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Presentation on theme: "BREWERY WASTE WATER RECYCLING A CASE STUDY"— Presentation transcript:

World Brewing Congress Portland, Oregon, USA July 28-August Michael Eumann EUWA Water Treatment Plants 1

2 Agenda Sustainability targets Water consumption figures
Potential users for recycled water Target values for recycled water ( service water) Case Study Design Information Flow Diagram Performance data Summary Outlook

3 Sustainability Targets: Water
1. ABInBev: Cut water consumption by 30 % by 2012 from 2007 Latest number 2011: hl/hl,  Target 3.5 hl/hl. (ABInBev Press Release, ) 2. SABMiller: Cut water consumption by 25 % by 2015 from 2008, Latest number 2011: 4.0 hl/hl,  Target 3.5 hl/hl. (SABMiller Position Paper – Water, March 2009) 3. Heineken: Cut water consumption by at least 25 % by 2020 from 2008, Latest number 2011: 4.3 hl/hl,  Target 3.7 hl/hl. (Heineken press release and Heineken Sustainability Report 2009)

4 Water Consumption Figures
(l/hl beer) Measures Standard practice 500 Good practice 375 Optimisation Good practice with waste water recycling 300 Reuse of water limited Best practice with waste water recycling 200x1-225 Reuse of water including rinse waters x1: Figure published at VLB-convention March 2010

5 Water Consumption Figures:
Water treatment Else Boiler feed water Brewhouse (without CIP) CIP (total) Dilution water Filling (without CIP) Filtration (without CIP) Fermentation and maturation (without CIP) All values given in l/hl; In total: approx. 375 l/hl.

6 Potential users for recycled water
I.: No direct or indirect product contact Full bottle and can rinsing, Crate washing, CO2-Recovery (washing), Vacuum pumps, Make-up water, e.g. for cleaning and disinfection, Boiler feed water, Condensers and cooling towers, Administration, Fire fighting, Irrigation.  Total amount: approx. 75 l/hl.

7 Potential users for recycled water
II.: No direct product contact (but final rinse allowed), additionally CIP final rinse water, Bottle washer, Bottle and can rinser. Total amount: approx. 175 l/hl.

8 Potential users for recycled water
III.: Feeding back into the raw water inlet: Limitation only by the max. yield of the waste water recovery plant. Water treatment Brewery Waste water treatment Waste water recycling River, lake Well, Municipal water supply, Surface water

9 Service water For CIP, packaging and cooling towers:
Needs to meet drinking water standards (WHO or company specifications). Special attention to: Total hardness ( precipitation), Chloride level ( stainless steel corrosion), pH-value (for mild steel piping, reservoirs, valves), Microbiology. 9 9

10 Case Study – Design Information
Brewery South America: Design capacity 8 Mio hl/y Water scarce area, original water consumption 3.7 hl/hl Existing waste water treatment plant consisting of anaerobic and aerobic treatment, clarifier 10 10

11 Case Study – Design Information
Waste water recycling plant capacity 125 m³/h Main components Ultrafiltration Reverse osmosis Disinfection 11 11

12 Design Information 1. Removal of particles and microorganisms
 Microfiltration, ultrafiltration 2. Demineralisation  Reverse osmosis (RO) 3. Disinfection  Chlorination

13 1. Removal of particles and microorganisms
Particles, turbidity and microorganisms ( activated sludge) have to be removed. Typically achieved by membrane technology (microfiltration (MF) or ultrafiltration (UF)).

14 2. Demineralisation Demineralisation necessary for most service water applications to remove Total hardness and m-alkalinity, Chloride, Total dissolved solids (TDS). Demineralisation may not be necessary for all applications (irrigation).

15 3. Final disinfection NaOCl is used for disinfection
Economic solution in terms of investment and operation costs Potential byproducts not critical as there is no product contact ClO2 as an alternative if byproducts are critical

WASTE WATER TANK REVERSE OSMOSIS Reclaimed water to consumers Disinfection INTERMEDIATE WATER TANK RECLAIMED WATER TANK Chemical dosing Cleaning chemicals ULTRAFILTRATION Boiler feed water

17 125m3/h, South America, 8 million hl/a brewery


19 Treated water quality Parameters WWTP effluent Recycled water pH TH Ca
Mg HCO3 Cl SO4 TDS odH mg/l mg/l CaCO3 8.05 28 88 15 1244 351 17.3 2281 6.5 n.d. 86 21 92 19

20 Efficiency Water recovery rates: UF: > 90 %, RO: up to 70 %,
 overall yield > 60 %. Mainly RO determines the efficiency of the recycling plant, depending on SiO2, PO43-, m-Alkalinity, Organics.

21 Operating Cost UF Cleaning Chemicals 0.6 cents/m³ treated water
RO Conditioning Chemicals cents/m³ treated water Treated Water Conditioning Chemicals cents/m³ treated water Power consumption cents/m³ treated water Total cents/m³ treated water

22 Impact on Waste Water Composition
Increase in concentration of e.g. COD, PO43-, TDS.  Legal limits to be considered.

23 Summary and outlook Brewery waste water recycling is the only way to reduce the overall water consumption in order to achieve sustainability targets in future. Drinking water standards can be reached without problems. Recycled water users have to be determined prior to the run up phase of the project.



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