SeminarWaterand WasteWaterSexta, 23 de Setembro2005
BottropOpportunities for MC-Products: Sewage-Treatment
PlantsStructureHistoryStastisticsof
WastewaterTheSewage-treatment-plantConcreteprotection? Yes!
Butwhere?HistoryTheRomans Row-toiletAPX 200350
b.Chr.HistoryPecunianon oletKaiser Vespasian69-79 n.ChrMoney
doesntstinkToiletaround1900Contemporary Row-toiletTyp
OnlineTheRomans Row-toiletOpportunities for MC-products : Sewage
Treatment PlantsHistorical FactsaroundSewagetreatmentFirst
thoughtsweremade in 1853 to developea plant thatcleanstheeffluentof
thecityof London to saveriverThames1887
firstgermansewagetreatmentplantin
Frankfurt1913theactivatedsludgeprocesswas developed in
EnglandbyJ.Lockett1950 first
biologicalyprocessedSewagetreatmentplant in Germany2006
expectedcompletionand putintooperationof
thefirstsewagetreatmentplant ofEuropsCapital Brussels.Stastistics
of Wastewater1.Degree of connectionPopulation connectedto
sewage-treatment-plants< 30%30-70 %70-85 %<
85%Stage1Stage2Stage3Dgreeof connectionStatisticsDaily
waterconsumptionper Person / day Europ= 150 Ltr.4,5 bil. m/ a
Germany0.5 bil. m/ a Ausria3,2 bil. m/ a UK12,5 bil. m/ a Europ135
Mio.m/ Capacityof MhneWaterreservoirWhatisa sewagetreatmentplant
?Howdoesthecleaningprocesswork?In 3 Stages: 1.mechanical
Stage2.biological Stage3.chemical Stagethreestagesof
sewage-cleaning-processInletstructuregratingGrit
chamberSeperatoroilprimarysettlementDigesterAerationtankClarifier,secondarysettlementPhosphate
eleminationPrecipitation,chemicalmechanical Stagebiological Stage
chemical StagePre-thickenernitrificationdenitrificationSeptictank1.
mechanical StageGratingGrit chamberSeperatoroil
/GreasetrapprimarysettlementGrit Chamberaerated(Screen)1.
mechanical StageAerated screenWhathappensinsidea
Digester?Thesewagesludgeas a resultof thecleaningprocess
isbiological reducedinsidethedigester. In
thisanaerobicprocessthesludgeisdecomposedbybacteriaunderabsenceof
oxygen. Thesludgestays for 20 daysat a temperaturof37 C
insidethedigester. A stiringpaddel seesto itthatthedegassingof
thesludgecanhappen. Theso calledbiogasconsistsof CO2 (CarbonDioxyd)
and CH4 (Methan).Thisbiogasiscollectedin gas tanksand isusedfor
heatingprocessesat theplant orisburnedin a gas flare.
expectedPh-value Sludgezone5-7 expectedPh-value Gaszone 2-7
2.Biological StageGastankDigester
AerationtankClarifierPrimarysettlementDigesterGaszoneSludgezoneSludgeAeration
tank2.Biological StageActivated sludge consists of :BacteriaDead
cellsProtozoa and scouring OrganismsAnorganic particlesOrganic
fibers2.Biological StageConsentration of substrateThe activated
sludge
processprimarysettlementAreationtankClarifier,secondarysettlementprimarysettlementAerationtankClarifier,secondarysettlementReceivingWaterExcesssludge2.Biological
Stage3.Chemical-/ biochemical StageNitrification:transformationof
Ammoniacto ammonianitrogen Aerob Ph
7.5-8,3PhosphateliminierugdurchFllung mit
EisenchloridDenitrifikation:transformationof
ammonianitrogenintonitrogenand oxygenbymicro-Organismsin
bio-reactors. Fllung von Schwermetallen Cadmium, Blei, Quecksilber,
Nickel, ArsenAerob Ph 2 -4,3FlowchartInletstructureGrating Grit
chamber
GreastrapPrimarysedimentationDigesterAerationtankNitrifikationDenitrifikationPrecipitationGas
tankSludgedewateringSecondarysedimentationIncinerationAerobicAnaerobicThickenerSewagetreatmentplant
byFriedensreich Hundertwasser3.chemical stage2.biological
stage1.mechnical stageSieveFiltercoalSandGravelbowlAustrian Artist
1928 - 2000 Friedensreich HundertwasserStructureLoadings for
concrete in sewage treatment plantsMechanisms of concrete
demageWhich loadings can concrete resist ?What are possible
concrete protection systems ?Which sytems are ideal ?Which
expirince are there with Konusit KK 10?80 %of theofthestructural
membersin thewater and wastewater indusriearemadeof
concreteThisrepresentsseveral billionof valueaddedto thenational
economy. Thedesignedservicetimeof thestructural membersof a modern
sewagetreatment plant is50 years, 20 yearsfor
mechanicalequipmentConcreteneedsa sustainedprotection, to grant
theecpectedliefetimeunder thisconditiones.. In comparisonto
theivestmentcostsof sewagetreatment plant thecost for a
sustainedprotectionareonly0.5-1%.Concrete what can he perform ?Good
compressivestrengthgood thermal resistancyGood
reactionconcerningagingGood chemical resistancyPh value 6-14Open to
watervapourdiffusionWhichtypical loadings for
concretearethereinsewagetreatmentplants?Mechanical attackChemical
and bio-chemical attackThermal / attackCombinations of the above
mentioned attacksReasons for deterioration in s t pChemical
loadingmunicipal sewage:No primary attack,Strong scondary
attackSewage from industrie:Strong primary attackPrimary acid
attackIndustriePh-Wert < 4.5HS2Symptom and impactHS contentin
breathconzentration0.1 ppm0,1-1 ppm1-10ppmThresholdof smell for
StrongodourPungentodourMax. conzentrationat
workingplace(MAK-Wert)HS100 ppmirritationof mucousmembranes,eyesand
respiratorytract,cough0,1 Vol%cramps,unconsciousness, perilousno
odour!1,0 Vol%Fatal in fewseconds,
(respirationparalaised,suddenunconsciousness)Quelle:KA-Betriebs-Info
2000 (30) Nr. 3Secodary acidattackBiogenic suphuricacid,
municipalPh-Wert 1 - 4,5In gaszoneHS2Primari corrosionnon municipal
affluentAcidcorrosionResitancyofConcreteagainstacidattack=PH
5Detiriorationof concret-onlyin thewet-zoneofcircumferance.
Biogenic-sulphuricacidcorrosionmunicipal sewageLange Verweilzeit
desAbwassers imNetzlarge diametersof pipeSlowflowof
sewageAngefaultes Abwasserheavy H2S
emissionsSectionswithpoorventilationVolatile sulphuric
combinationsAttack in gaz-zone onlyBiogenic sulfphuric acid
corrosionDual attack to concrete1. dissolving of cement paste2.
Swelling of concrete1. Dissolving attackBiogenic sulfphuric acid
corrosionBiogenic sulfphuric acid corrosion1. Dissolving attack2.
Swelling of concreteBiogenic sulfphuric acid corrosionBiogenic
sulfphuric acid corrosion2. Swelling of concreteRubber mat cover in
orderto stop odourAfter removal of matMetallcorrosion
and......Biogenic sulfphuric acid corrosionMassivecorrosion of
ConcreteBiogenic sulfphuric acid corrosionBiogenic sulphuric
acidcorrosonLoss of concrete of 4 -7cm in 4
YearsOdourtrapDestruction of manhole by H2 SO4Chemical und physical
ProcessessoilConcrete basinTransportation of
moistureCoverWasserwechselzoneGaszone pH 1- 3,5Wetzone pH
6,5-7Osmotic EffectTransportation of moistureThe problemwith
coatings impermeable to water vapoursoilConcrete
basinTransportation of moistureTotal debonding of
coatingCoatingCoating open to diffusion of water vapourNo decreas
of bondingsoilConcrete basinTransportation of
moistureOsmoticbubbleopenedPh conditiones in uncoverd basinswet
zone, municipal sewage7 14Ph - 5,0Ph - 6,5 - 7,0 municipal
sewage0Resistancy of concreteBiogenic sulphuric acidcorrosonBS: pH
0,7Beton: pH 13,710.000.000.000.000 timesthe concentration ! Ph
conditiones in coverd basinsgas zone, municipal sewagePh value 0-
4,5Resistancy of concretePh value 5,007 14The range of options to
protect concreteOptions forConcreteprotectionCoatingsfor
rehabilitationand new structuresLiningas a rule fornew structures
organic anorganic organic anorganic metaliccementiousPCCEP / PUR /
PCECC / PHS Free
ofcement-GlassHigh-grade-steelmineralicHD-PE/PVC/PP/
GRPOrganicmaterialsLoad: in operationLiningCoatingPVC PVCHD HD- -PE
PEAnkernoppe Ankernoppe+ +GFK GFK- -UP UPElemente ElementeGFK GFK-
-VE VEElemente ElementeEP/UP EP/UPPUR PUR- -direkt direktPUR
PURDainage Dainage+ +Poly Poly- -harnstoff harnstoffDiff Diff.
.Water Watervap vap. .Os Os- -mo mo- -ses sesMecha Mecha- -nical
nicalloading loadingTherm Therm. .loading loadingChem. Chem.loading
loadingBiol. Biol.loading loadingdamp dampsubstrate substrateDew
Dewpoint. point.Temp Temp. .30 C
C--++++++++++++++++++++++++++++++--------++++++++++++++++++++--------------------------------------------------------++++++++++----
++++-- ++-------- ++++++++++----Load: applicationMetall MetallV 4A
V 4AGlas GlasKeramik KeramikZement Zement- -gebunden
gebundenPolymer Polymer- -silikat
silikat++++++++++++++++++++++++++++++++++++++++++++++++++------++--------------++++++++------++++--++++----++++--Water
Watervap vap. .Os Os- -mo mo- -ses sesMecha Mecha- -nical
nicalloading loadingTherm Therm. .loading loadingChem. Chem.loading
loadingBiol. Biol.loading loadingdamp dampsubstrate substrateDew
Dewpoint. point.Temp Temp. .30 C CAnorganicmaterialsLoad: in
operationLoad: applicationLiningCoatingStructural membersand
theirloadings1MechanicalyChemicaly ThermalStructural
memberloadingInletstructureInletstructurecoveredGrit
chamberStructural membersand
theirloadings2MechanicalyChemicalyThermal/HygricalyStructural
memberloadingGrit
chambercoverdPrimarysedimentationPrimarysedimentationcoveredStructural
membersand
theirloadings3MechanicalyChemicalyThermal/HygricalyStructural
memberloadingThickenerDigesterNitrificationStructural membersand
theirloadings4MechanicalyChemicalyThermal/HygricalyStructural
memberloadingPrecipitationSecondarysetlementDenitrifikation Repair
of sewage and waste water plantswith the product range
MC-RIMSurface protection systems require a solid basisPartial
Repair Full RepairPCC-SystemNafufill KM250 HSSPCC-SystemNafufill
GTS - HSPCC System Nafufill KM 250 HSCorrosion protection of the
reinforcement with ZentrifixKMHBonding agent Nafufill HB -HSCoarse
mortar Nafufill KM250 HSSPCC System Nafufill GTS -HS Surface
protection with the mineral-based coating MC-RIM MC-RIM What can
you expect? MC-RIMis a highly sulphate-resistant, mineral-based
surface protection system for coating of wastewater plantsMC-RIMis
two-componentPowder ComponentMC-Additiv RBIMC-RIMtested and
approved properties1. resistance against highly aggressivewater and
soils according to DIN 1045 part 22. impermeable to water according
to DIN 10483. diffusion resistance against water vapour:2.4 m4.
total pore volume P28d
