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

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00

00

00

00

00

00

00

00

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00

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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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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