Lamb Weston / Meijer, Kruiningen - Evides

Lamb Weston / Meijer, KruiningenTailor-made water solutions for the food industry

HistoryPotato trading company Meijer was founded in the Dutchprovince of Zeeland in the 1920s and expanded its activitiesto processing potato products in the 1980s. In 1994Meijer set up a joint venture with American company LambWeston, combining their leading expertise in potato productionwith Meijer’s thorough knowledge of the Europeanmarket. Under the name of Lamb Weston / Meijer V.O.F. theynow operate from three locations in the Netherlands with atotal workforce of approximately 1,000 employees. Exporting90% of its total production, Lamb Weston / Meijer mainlycaters to large restaurant chains, whose standards in Frenchfries require top quality potatoes. These potatoes are grownunder controlled conditions in the Netherlands (Zeeland andNorth-Brabant provinces), Belgium, Germany, France andthe United Kingdom. Water is an important resource inpotato processing: the company’s largest productionfacility in Kruiningen, the Netherlands. This productionfacility in Kruiningen, uses nearly 2 million cubic metresof water per year. The water is used for washing andblanching purposes, but is also used as feedwaterfor the deminwater production to feed boilers.Until the early 1990s the company processed its potatoesby using drinking water, but in 1992 it began the transitionto the use of sustainable industry water. The first stepwas to test whether DynaSand filtration could provide therequired quality. These tests were performed successfullyat Evides’ industrial water treatment plant “Kraaijenberg”and after the approval of the Dutch food authorities(“Keuringsdienst van Waren”) Evides built a full-scale installationconsisting of three DynaSand filters and a UV disinfectionunit. The water treatment plant was owned and operatedby Lamb Weston / Meijer. The total production capacitywas 100 cubic metres of industry water (processwater) perhour. The feedwater source was surface water which originsfrom the river Meuse and is being stored in the Biesboschwaterreservoirs of Evides. By means of a piping systemthis water was transported from the reservoirs toLamb Weston / Meijer.By 1996 water demand had increased from 0.8 to 1.5 millioncubic metres per year, which exceeded the capacity ofthe existing installation. Furthermore, Lamb Weston / Meijerhad decided to outsource its water operations in order to befocussed exclusively on its core business processes. Theirsupplier of choice was Evides, who had already shown tobe a reliable partner through years of uninterrupted supplyof drinking water. Evides acquired the industrial waterpurification installation from Lamb Weston / Meijer’s on aDBFO basis (Design, Build, Finance & Operate): in additionto design and construction Evides became the new ownerof the plant and also became responsible for the operationsto supply water that meets the specifications and quantitiesrequired by Lamb Weston / Meijer.

903.401-009REGENERATION CAT-1903.401-009CATION EXCHANGER 15050-PdISH1131903.401-009DISCHARGE CATION 150-FL1130 50-BL1140DN10050-HV1106The plantThe water treatment plant in Kruiningen has a capacity of400 cubic metres per hour and supplies nearly 2 millioncubic metres industry water per year. In order to guaranteea continuous supply the installation was designed for acertain level of redundancy. A backup drinking water inletin addition to its regular inlet of surface water from Evides’Bieschbosch water reservoirs was foreseen.Diagram process water installationFromboosterstationBathIron chloride903.401-037SCAVENGING AIR SUPPLYIndustrial waterreservoir903.401-028REG. WATER903.401-028DILUTED NaOHREG. STATION 1Surface water from the Biesbosch water reservoirs needsto undergo a number of essential treatment steps in orderto meet Lamb Weston / Meijer’s quality requirements (seetable):• iron additions for coagulation• dual-layer filtration• UV disinfectionBlowerDual-layerfilterUV disinfectionEmergencycouplingBackwash waterDrinking water(back-up)OPEN TRENCHTo end-userEffluent sedimentationand sludge settling reservoirSurface water from the BiesboschWater specifications (normal operations)Particle suspension< 1.0 mg/lTurbidity< 1.0 FTUpH 8-9Conductivity< 600 mS/cmChloride< 70 mg/lSulphate< 80 mg/lTotal hardness1.5 - 1.65 mmol/lColony count 22°C< 100 mlE-coli< 1/100 mlEnterococci< 1/100 mlClostridium perfringens< 1/100 mlAs said, Evides’ Biesbosch water reservoirs origins form theriver Meuse and is the feedwater source water for the watertreatment installation. The river Meuse water is pre-purifiedby natural processes in three Biesbosch water reservoirs.Over time, purely through natural causes, sludge settles onthe bottom, volatile substances evaporate, organic matterdecomposes and some of the bacteria and viruses die.In addition to these natural processes, calcium is added tosoften the water. Pre-purified surface water from the Biesboschwater reservoirs is not only used to feed a number ofindustry water treatment installations, it is also Evides’ mainsource for the production of drinking water – which is why

-V110050-FL115050-LI111250-LT1110OUTIN50-PI110650-PdT12341/2"1/2"* NOTE 150-HV12VBA8050-HV1222VBA8050-HV1223VBA8050-HV1224SBADN25VBA50-HV1220SG50-PI1225DN25VBADN25DN25VBAVBASC50-HV120450-ZSO120350-ZSC120350-XV1DN25VBADN5050-FL1270VBADN25VB50-FI123150-AT123050-FI1241PH CON50-AT124050-AT1250-1SI0250-HV1101VBAVBA50-VBG110250-LSL111150-P1120DN2550-HV1207 50-VCH1208VBA50-VBG1103 50-VCH1104 50-HV110550-ZSC121150-ZSO50-XV1211121150-ZSO121350-ZSC120950-XV120950-ZSC121050-ZSO120950-ZSC50-ZSO50-XV12101212121050-XV121350-ZSO50-XV1212121250-ZSO121450-ZSC121450-XV1214DN8050-HV121550-ZSC121350-HV1217this might be the best-monitored surface water in theNetherlands. Extensive quality monitoring, including biologicalmonitoring, means that this raw water is excellentlysuited as a source of industry water for the food industry.Purification processThe first step of the water treatment plant in Kruiningen is toremove suspended and colloidal substances. This involvesthe use of a coagulant (in this case iron chloride) to facilitateflocculation. In this particular installation flocculation doesnot take place as a separate stage, but inside the sandfilter.This is called direct filtration. In order to reduce the need forbackwashing the plant uses dual-layer sandfilters, with alarge capacity to hold dirt.The dual-layer sandfilters are cleaned by backwashing withwater from the industry water reservoir and by means ofair scouring. Effluent from the filters is collected in a closedreservoir for sedimentation. After sedimentation the waterfrom the top layers is discontinuously pumped out andmixed with incoming feedwater.Iron chloride additions to raw waterIn order to facilitate coagulation (chemical flocculation), ironchloride (FeCl 3) is added to the water, which causes particulatesto clog together to a size that makes them easier tofilter out.Dual-layer filtrationRaw water is fed into the dual-layer filters through a centralchute. The two layers of the filter consists of a bottom layerof sand and a top layer of anthracite (coarser fraction).The relatively low density of the anthracite prevents it fromsinking into the sand as the water flows through the filter.In each dual-layer filter water is dispersed through perforatedpipes to remove pollutants such as sludge particles (clay),algae and calcium particles, that remain in the raw surfacewater as a result of the softening process in the Biesboschwater reservoir. The sludge flocs also gather up some ofthe bacteria, which is the first step in improving the water’sbacterial quality.Industry water reservoirsTreated industry water is stored in a reservoir, disinfectedwith ultraviolet light and finally pumped under high pressureto Lamb Weston / Meijer. The reservoir also serves as aback-up system to ensure a high reliability of the supply ofindustry water.High-pressure pumpsA pumping station consisting of three high-pressure pumpsperforms the task of pumping the purified industry water toLamb Weston / Meijer.UV disinfectionBacterial quality is improved by disinfecting the processwater with ultraviolet (UV) light, which damages the DNAstructure of the microorganisms. As a result the microorganismsbecome inactive and do not become pathogenic.UV disinfection is highly effective against a range ofmicroorganism. UV light does not require any dosage ofchemicals, which make this a sustainable technology.Backwashing and air scouringThe dual-layer filters are backwashed periodically with airand filtrated water from the industry water reservoir. Air forscouring the filters is blown from below.

IN50-HV12903.401-009REGENERATION CAT-150-FL1150OUT50-PdT12341/2"VBA850-HV903.401-009CATION EXCHANGER 150-V110050-LI111250-LT111050-PI1106903.401-009DISCHARGE CATION 150-PdISH113150-FL1130 50-BL1140DN10050-HV110650-HV1101VBAVBA50-VBG110250-LSL111150-P1120DN25VBA50-VBG1103 50-VCH1104 50-HV110550-ZS1250-HV1207 50-VCH1208903.401-037SCAVENGING AIR SUPPLYEffluent processingThe purification process results in an effluent stream thatis not suited to be discharged into surface water. Thereforethe effluent from the dual-layer filters, including theadded iron chloride, is pumped into the effluent reservoir.After six to eight hours of sedimentation the clarified topwater (down to 2.5 metres below the surface) is fed backinto the first step of the water treatment plant . The sludgeis removed from the effluent reservoir approximately onceevery year.ResultEvides constructed the water treatment plant at Kruiningenon the basis of DBFO principles (Design, Build, Finance &Operate). This means that, Evides is responsible for thedesign, construction and financing of the plant. As the ownerof the pant, Evides is also responsible for the operationsof the treatment facility, which means to supply water thatmeets Lamb Weston / Meijer’s quality and quantity specifications.As a result, Lamb Weston / Meijer is guaranteed ofa tailor-made secured supply of industry water, which allowsit to focus on its core business: processing potatoes.903.401-028REG. WATER903.401-028DILUTED NaOHREG. STATION 1OPEN TRENCH50-HV121750-ZSC121150-ZSO12150-XV12All process units are managed and monitored with thehelp of SCADA systems, allowing for a fully automated andbasically unmanned installation.

Evides Industriewater:a water chain approach for industries07/12/250Evides Industriewater is a subsidiary of Evides N.V., the supplierof drinking water to the Dutch province of Zeeland andparts of neighbouring provinces South Holland and NorthBrabant.As the largest supplier of water services in the Benelux,Evides Industriewater produces and supplies industry water(process water), demineralised and agricultural water. EvidesIndustriewater also owns several industrial and domesticwastewater treatment plants.Evides Industriewater produces and supplies demineralisedwater to several clients in the chemical and petrochemicalindustry, including Dow Chemical Terneuzen, DOW ChemicalStade (germany), Dupont and BASF Antwerpen, where watertreatment plants were developed under Evides Industriewater’sresponsibility at all stages: the DBFO principle (Design,Build, Finance & Operate).In the The Hague area Evides Industriewater is partner ina joint venture that operates the wastewater treatmentplants Harnaschpolder and Houtrust, with a joint capacityof 1.7 million resident equivalents. Evides Industriewateralso operates the wastewater treatment plants of SchipholAirport and an industrial estate in Vlissingen-Oost.The NetherlandsSchaardijk 1503063 NH ROTTERDAMP.O.Box 44723006 AL ROTTERDAMTel. +31 10 293 51 72sales@evides.nlwww.evides.nlChinaFortune Plaza No.7Dongsanhuan Zhong RoadChaoyang DistrictBeijing 100020Tel. +86 10 65 330 256www.evides.cnGermanyPostfach 10142342014 WUPPERTALTel. +49 151 52 565 093www.evides.dePartner in Water