Deals with the measurement of aggregate organic matter concentration in wastewater samples. BOD, ultimate BOD and BOD kinetics are discussed. Methods for the measurement of COD, DO, BOD, BOD uttima...
winklerDeskripsi lengkap
diss_ox measurementFull description
BOD
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wastewater uitm
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untuk mengetahui tentang kadar organisme yg berada di airFull description
LAPORAN PRAKTIKUM AIRFull description
Lab ReportFull description
Deskripsi lengkap
bod
Determination of Biological Oxygen Demand.Full description
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Descripción: Cimentaciones Elásticas Winkler
Descripción: gbjkgb
whoopFull description
Coacciones del deseo de WinklerDescripción completa
Aquatic life depends on gases such as CO2 and O2 to survi ve.
Dissolved O2 in H2O Water is polar Oxygen is non-polar Solubility of oxygen in water is ver y low
Dissolved O2 in H2O The amount of the dissolved oxygen in water is used as a barome ter to indicate the quality of water. High concentration of D.O. indicates a low level of pollution.
1. The Winkler Method An environmental application of redox chemistry
What is it ? Be used to measure the amount of D.O. in water Based on redox reactions Annoying Redox
What is it ?
Fish dying caused by heat waves Why does the high temperature kill fish?
Solubility of oxygen in water Temperature dependent: Temperature increases, Solubility of gases decreases. (Amount of the gases decreases)
2. BOD (Biochemical Oxygen Demand)
Measures the degree of organic pollu tion in a sample of water
BOD (Biochemical Oxygen Demand) The amount of oxygen required to oxidize organic matter in a sample of water (in ppm) mg/dm^3 (at a definite temperature over 5 days)
What is ppm ? Parts per million Used to measure the c of dilute solutions
What is ppm ? Parts per million Used to measure the c of dilute solutions According to WHO: Cmax (Pb2+) =0.001 ppm in drinking water
Typical Values of BOD
Substances produced by bacteria
Measure BOD Using Winkler Method P224-225
Reduction in D.O. can cause the depletion of fish stocks BOD > dissolved content in water Aquatic life cannot survi ve
