A 2% dilution of sewage sample is incubated for 5 days at 20°C. The depletion of oxygen was found to be 4 ppm. Determine the BOD₅ of sewage at 20°C. Calculate ultimate BOD and 2 day BOD at 35°C

A 2% dilution of sewage sample is incubated for 5 days at 20°C. The d

1.	A 2% dilution of sewage sample is incubated for 5 days at 20°C. The depletion of oxygen was found to be 4 ppm. Determine the BOD₅ of sewage at 20°C. Calculate ultimate BOD and 2 day BOD at 35°C
Answer» According to the Le Chateliar's principle high pressure is favourable for the formation of ammonia.The optimum conditions for the production of ammonia through Haber's process are a pressure of 200 atm, a temperature approximately of about 700 K and USE of catalyst such as iron oxide with SMALL amounts of K2O and Al2O3 toincrease the rate of attainment of equilibrium. low temperature and high pressure are favourable conditions for maximum yield of sulphuric acid. because the reaction is exothermic, reversible, and the forward reaction leads to decrease in VOLUME for the below reaction 2SO2 +O2 in presence of V2O5 catalyst gives 2SO3 but very low temperature slows downn the rate of the reaction. In the contact process the plant is OPERATED at a pressure of 2 bar and a temperature of 720 K.

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A 2% dilution of sewage sample is incubated for 5 days at 20°C. The depletion of oxygen was found to be 4 ppm. Determine the BOD₅ of sewage at 20°C. Calculate ultimate BOD and 2 day BOD at 35°C

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