Determine time required to raise initially ozone free water

Assignment Help Chemistry

Reference no: EM131310552

An ozone, O₃, sparger system has been proposed for a water-treatment plant. The incoming water in a 80 m3 pond has been stripped of all ozone-demanding substances, and the pH is sufficiently low such that the ozone decomposition will be insignificant. The ozone bubbler will have eight spargers, each using a compressed gas feed containing 4 mol % ozone. The spargers will be located 3.2 m below the surface of the pond and each sparger's gas rate will be 17.8 m³ /h. Henry's law constant for the ozone-water system will be 0.0677 atm/(mol/m³)

a. Use the Eckenfelder plot for oxygen transfer factor, k_L(A/V), and evaluate the k_L(A/V) for ozone, recalling that the penetration theory predicts, for mass transfer from gas bubbles into liquids, that k_L(A/V) will be proportional to the liquid diffusivity raised to the power of 1/2. The diffusivity of oxygen in water is 2:14 × 10^-5 cm²/s and the diffusivity of ozone into water is 1:7 × 10^-5 cm²/s.

b. Determine the time required to raise the initially ozone-free water in the pond to a concentration level of 0.15 mol/m³.

Reference no: EM131310552

Questions Cloud

Estimate the test section velocity in miles : An open-circuit wind tunnel draws in sea-level standard air and accelerates it through a contraction into a 1 m-by-1 m test section.

Evaluate the final dissolved oxygen level : If 283 K wastewater, initially containing a dissolved oxygen level of 5×10-3 mmol/L and filling the basin to a depth of 4.55 m, is aerated for 9000 s, evaluate the final dissolved oxygen level.

Create a server diagram to model the physical view of system : To present a static model of the system, create a diagram for a layered architecture view of the system.Using the components you identified in your layered view of the system, create an activity diagram that shows how a customer would place an ord..

Determine the average fluid velocity at the drain port : Suppose that the pool has a drain port with a diameter 0.5 in. Immediately after the drain is opened, the rate of change of the depth of the water in the pool is observed to decrease to 80% of the value calculated in part (a). Determine the averag..

Determine time required to raise initially ozone free water : Determine the time required to raise the initially ozone-free water in the pond to a concentration level of 0.15 mol/m3.

How many bacteria will be present after ten minutes : The bacteria Escherichia Coli are commonly found in the human intestines. How many bacteria will be present after 10 minutes? 20 minutes? 30 minutes? 40 minutes? And 60 minutes?

Calculate the density of the exhaust gas : calculate the density of the exhaust gas. How would your solution to this problem change if the engine were attached to the wing of an airplane flying through still air at a velocity of 900 km/h?

Determine the kla for oxygen for new dispenser : Determine the KLa for oxygen for this new dispenser when it is operated 3.2 m below the liquid surface with the air flow rate of 7:08 × 10-3 m3/s.

Explain how the orange book is the precursor : Explain how the Orange Book is the precursor to current accreditation and authorization methodologies. Your first task in this project is to review the provided scenario and create the shell for the case study. This case study will be used as the b..

User Account

All Pages