bod experiment lab report
Biochemical oxygen demand bod date of experiment. See Appendix A7-A Table 1 for information on the parameter code for biochemical oxygen demand that is used in the National Water.
Aeration Basin With Do 3 2 Water Treatment Wastewater Wastewater Treatment
After incubation titrate 50 ml of sample water with 0025N Sodium thiosulphate to a pale yellow color.
. Nabilah binti md zin 2018694072 4. Nurfaiza adrina binti ahmad khir 2018693872 5. Fatin arifa binti mansor 2018264884 3.
Another sample of the same wastewater is placed in a sealed dark bottle and incubated at 20C for five days. The chemical oxygen demand COD is the amount of oxygen consumed to completely chemically oxidize the organic water constituents to inorganic end products. Because BOD changes with respect to time it is important to report at what time a BOD measurement was made.
Since cold water retains oxygen better than warmer water DO is usually lower in summer months. 1 The BOD test is used to determine the relative oxygen requirements of wastewaters effluents and polluted waters. Page 2 of 5 BOD Experiment 2021 BOD Procedure- General The most important concepts are the pre-treatment dilution seeding and proper incubation of the sample.
The 60 - 90 days is too long to wait for lab results hard to manage discharge from sewage treatment plants with such a wait. Aquatic life requires dissolved oxygen in the water therefore eutrophication and ocean acidification are becoming huge problems in todays ecosystem. Biochemical oxygen demand or BOD is a chemical procedure for determining the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in a given water sample at certain temperature over.
Siti aisyah binti abd malik 2018402684. This was accomplished by measuring the difference between the initial and final dissolved oxygen DO concentration in each sample after five days. Up to 24 cash back BOD Lab Report IV.
Explain briefly the steps of COD measurement that you should follow during this experiment. While Biochemical Oxygen Demand is a common environmental procedure for determining the extent. 1 OBJECTIVE This experiment was conducted to measure the five day biochemical oxygen demand BOD5 of samples of raw wastewater treated wastewater and Mānoa Stream water.
The lab report will be submitted in laboratory itself. Temperature of water DVTime of oxygen depletion By oxygen Indicator. Keep the bottle in BOD incubator for 5days of incubation.
A higher BOD indicates more oxygen is required signifying lower water quality. Nabilah binti md zin 2018694072 4. The most common time interval for reporting BOD values is 5 days.
Ec2206c4a group members 1. It was carrying out to determine the organic oxidize able matters content of water samples. Open-ended lab report title of experiment.
To stop these things from negatively affected these ecosystems we must first find what. Fatin arifa binti mansor 2018264884 3. Oxygen is classified as poorly soluble and its solubility is affected both by atmospheric pressure and physical and chemical properties of water such as temperature salinity pollutants etc.
Then add 2ml of starch solution. By using BOD3 the time of experiment can be shorten and the effect of experiment almost the same with BOD 5. So the sample turns blue in color.
22 april 2020 group. Title experiment date group member names and entry no. The ratio of BOD 5 to COD of industrial wastewater is very low since industrial wastewater.
All reports should strictly follow this outline NameEntry noGroup no. In a simple test DO is determined at time zero DO0. References for section 70 Five-d ay biochemical oxygen demand are located at the end of Chapter A7 in the Selected References and Documents section which begins on page REF-1.
1 points Cover page. A major disadvantage of the BOD test is that results are not available for 5 days. The biochemical oxygen demand results from the respiratory processes of microorganisms and microorganisms are alive.
WWTP Effluent 19 5 26. The primary difference between BODn determination and other measurements such as pH conductivity oxygen COD nitrate etc is the fact that biological systems rather than chemical or physical characteristics are being examined. Low BOD means less oxygen is being removed from the water so the water is usually more pure.
Bod experiment lab report Wednesday June 8 2022 Edit. Manual calculator and lab note book. THEORY 21 Dissolved Oxygen DO All gases of the atmosphere are soluble in water to some degree.
Continue the titration till the sample gets clear and note the readings. BOD 5 Measurements 1 Winkler method. Ratio of BOD to COD greater than or equal to 08 indicates that wastewater highly polluted and amenable to the biological treatment.
Up to 24 cash back The ratio of BOD to COD is useful to assess the amenability of waste for biological treatment. This curve can then be used to determine the Ultimate BOD of the wastewater sample and the rate constant for its decay. The solubility of atmospheric oxygen in fresh waters.
Ainatul-fatima binti md murozi 2018438002 2. More than 23 of BOD exerted in first 5 days the BOD is a function of time and the BOD 5 is the common BOD used. Biochemical Oxygen Demand Lab Report Chem2610 Environmental Chemistry I Newcastle Thinkswap.
- COD lab reportdocx - Free download as Word Doc doc docx PDF File pdf Text File txt or read online for free. Ec2206c4a group members 1. Biochemical oxygen demand bod date of experiment.
The test measures the oxygen utilized during a specified incubation period for the biochemical degradation of organic material. All lab data will be entered on a sheet of a paper and checked with a Teaching Assistant before attaching it with the lab report. The preview shows page 2 - 3 out of 12 pages.
COD or Chemical Oxygen Demand is the Biochemical Oxygen Demand is supposed total measurement of all chemicals in the to. Nurfaiza adrina binti ahmad khir 2018693872 5. The purpose of this experiment is to perform a Biochemical Oxygen Demand test on primary clarifier effluent from a wastewater treatment plant to determine a BOD versus time curve.
The BOD 5 values were found in the previous lab report. The BOD determination has been standardised and measures the amount of oxygen utilised by micro-organisms in the stabilisation of wastewater during 5 days at 20C. Since the average BOD3 obtained from experiment is 16833 mgL so that it can be concluded that the waste water from water plant behind Tasik Kemajuan Tasik G3 UTHM has been polluted.
The standard method for measuring BOD 5. Environmental engineering laboratory ecw 568 open-ended lab report title of experiment. Sample COD mgL BOD 5 mgL BOD 5 COD mgL Raw Wastewater 716 219 30.
It is useful to assess strength of wastes which contain toxins and biologically resistant organic substances. 22 april 2020 group. Ainatul-fatima binti md murozi 2018438002 2.
Bod Lab Report Pdf Sewage Treatment Wastewater.
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