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Tintometer GmbH
Lovibond Product Training: Water AnalysisInstrumentation - Reagents - Applicationspresented by Dipl. Ing. Helmut Reber
Tintometer GmbH
Tintometer GmbH
History1885 Joseph William Lovibond being in the brewery business started the foundation of the Tintometer Ltd. in Salisbury/England. He introduced the Lovibond colour scale and the first colorimeter ever.1953 Publication of the first edition of the book "Colorimetric Chemical Analytical Methods (CCAM)". Colorimetric Analytical Equipment was introduced using reagent tablets as an alternative to theliquid chemistry.1967 Foundation of the Tintometer GmbH Company in Dortmund/Germany by Cay-Peter Voss. Technical backup and service together with closercontact leading to prompt supply of instrumentation to customers in Continental Europe.1982 Introduction of the first photometer systems for water analysis.1985 Centenary of The Tintometer Ltd. in Salisbury England with congratulations by the Prime Minister Margaret Thatcher.1997 Certification according to DIN ISO 9001 by DQS. 30 years of successful activities of the Tintometer GmbH in Dortmund/Germany. Today Research, development and equipment production of water analytical systems and reagents for various applications. Global marketing of Lovibond products.
Tintometer GmbH
Methods and Productstitrimetric methodscolorimetric methodstablet count method speedtest MINIKIT MINIKIT visualmethods photometricmethodsComparatorCHECKITTest Kit CheckitDirectMaxiDirect
MultiDirect
SpectroDirect
Tintometer GmbH
Principle of Photometric MeasurementI0I
Tintometer GmbH
Electromagnetic spectrumh
Tintometer GmbH
Absorption of light GreenRedSTOPRed / Blue light700 nm550 nm450 nmWhite light700 nm550 nm450 nmRedBlueBlue
Tintometer GmbH
Absorption of light
I0: Intensitiy of the entering lightI: Intensitiy of the transmitted light
Tintometer GmbH
Principle of Photometric MeasurementI0I
Tintometer GmbH
Schematic diagram of a wastewater treatment plantOxygen supplyWaste feedAeration tankClarifierWaste sludgeSludge ReturnEffluent(activated sludge plant)
Tintometer GmbH
Important Wastewater ParameterWastewatertreatmentplantNitrogen means:- Ammonia- Nitrate- Nitrite
Tintometer GmbH
Principle of MaxiDirectDetectorDetectorLEDLEDLEDInterference filterMeasuring beamInterference filter
Tintometer GmbH
Principle of PoolDirect and MultiDirect
Tintometer GmbH
Principle of SpectroDirectMicroprocessor unitTungsten halogen lampMonochromatorMovable mirror
Sample chamberSilicon photodiodeFor checking the optical system the SpectroDirect has an integrated Didymium-filter, which is placed automatically in front of the detector during self test.
Tintometer GmbH
COD-BODBODCOD
Tintometer GmbH
COD-BOD RelationshipCharacteristics
< 1,7 Easy degradable / nearly complete decomposition
1,7 10Incomplete decomposition / reasons: Some of the material is not degradable Inhibition because of toxic ingredients Slow adaptation of microorganisms
> 10No decomposition / reasons: Persistent ingredients Complete inhibition because of toxic substances 20 % non degradable organic material
80 % degradable organic materialCOD/ BOD5Relation
Tintometer GmbH
BOD - Biochemical Oxygen DemandPressure Sensor
Gasket & CO2Absorber
Glass Bottle
Gas Phase
Waste WaterCorg + O2BacteriaCO2 + Cell massMeasurement corresponds to the process during waste water treatment: p = BODCarbondioxideOrganic OxygenMaterials
Tintometer GmbH
BOD5 BODn+1 > BODn (20,6 % p.d.) BOD5 70% degradation of total BOD
Diagramm3
0100
20.679.4
36.956463.0436
49.943381650.0566184
60.255044990439.7449550096
68.442505722431.5574942776
74.943349543625.0566504564
80.105019537619.8949804624
84.203385512815.7966144872
87.457488097212.5425119028
90.04124554929.9587544508
92.0927489667.907251034
93.7216426796.278357321
95.01498428724.9850157128
96.0418975243.958102476
96.85726663413.1427333659
97.50466970742.4953302926
98.01870774771.9812922523
98.42685395171.5731460483
98.75092203761.2490779624
99.00823209790.9917679021
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BOD mg/l
C-org %
t [d]
BOD-graph at 20 C
BSB-kurve
t [d]C-org %BOD mg/l
01000
17920.6(= tglicher Abbau des Resr-BSB; hier Rest-BSB = 100 mg/l.)
26337
35050
44060
53268
62575
72080
81684
91387
101090
11892
12694
13595
14496
15397
16298
17298
18298
19199
20199
&L&D&CSeite &P/&N&R&F
BSB-kurve
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
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BOD5 mg/l
C-org %
t [d]
BSB-Kurve bei 20 C
BOD-curve
t [d]C-orgBOD5 mg/l
01000
17920.6(=daily decomposition of the residual BOD;
26337here: initial BOD value = 100 mg/l.)
35050
44060
53268
62575
72080
81684
91387
101090
11892
12694
13595
14496
15397
16298
17298
18298
19199
20199
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BOD-curve
0100
20.679.4
36.956463.0436
49.943381650.0566184
60.255044990439.7449550096
68.442505722431.5574942776
74.943349543625.0566504564
80.105019537619.8949804624
84.203385512815.7966144872
87.457488097212.5425119028
90.04124554929.9587544508
92.0927489667.907251034
93.7216426796.278357321
95.01498428724.9850157128
96.0418975243.958102476
96.85726663413.1427333659
97.50466970742.4953302926
98.01870774771.9812922523
98.42685395171.5731460483
98.75092203761.2490779624
99.00823209790.9917679021
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BOD5 mg/l
C-org
t [d]
BSB Curve at 20 C
Tabelle3
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Tabelle4
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Tabelle5
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Tabelle6
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Tabelle7
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Tabelle8
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Tabelle9
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Tabelle10
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Tabelle11
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Tabelle12
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Tabelle13
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Tabelle14
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Tabelle15
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Tabelle16
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Tintometer GmbH
BOD-GraphA: Idealised BOD-Graph B: Nitrification occures (use nitrification inhibitor N-ATH) C: Measurement is overrange (change measuring range or dillute sample) D: Measurment system is leaky or anaerobiosis occurs E: Microorganisms were not pre-adapted; choose a suitable inokulum
Tintometer GmbH
pH-SensorBuffer solution pH 7Metal lead for pH voltageMetal lead for pH voltage (Reference Ag/AgCl element)Reference ElektrolyteReference diaphragmpH glas diaphragm
Tintometer GmbH
pH-ValueSL_2U_ASSL_1pH-valuePotentialin mV
Tintometer GmbH
Conductivity- Sensor
Tintometer GmbH
Oxygen-Sensor
RefillopeningSensorshaftO-Ring sealMembrame cap
Tintometer GmbH
Principle of Turbidity Measurement
PCcompact:orange: 605 nmgreen 430 nmPCcompact:orange: 605 nmgreen 430 nmPCcompact:orange: 605 nmgreen 430 nmPCcompact:orange: 605 nmgreen 430 nm
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