Calculate the oxygen deficit in the river

Reference no: EM131252062

As a waste moves downstream, exertion of the oxygen demand removes oxygen from the water and exchange with the air (reaeration) adds oxygen to the water. Initially exertion exceeds reaeration and the dissolved-oxygen (DO) content of the water drops. Later, as the waste becomes stabilized (no longer consuming as much oxygen), the river DO increases. The result is a dissolved-oxygen sag curve. Equations were provided in this chapter to determine the location and value for the minimum point in the DO sag curve. Using data from Problem 5-10 and assuming that there is no NBOD exertion, calculate the oxygen deficit (Do) in the river after it has mixed completely with the waste discharge, the time and location of the maximum deficit, and the minimum DO concentration. Assume a saturation DO for the river of 10 mg/L, that k, = /Q., and that the reaeration coefficient (k2) is 0.3 day'.

Reference no: EM131252062

Questions Cloud

Expandable of market or the smithian hypothesis : What does it mean by DoL is limited by the size of the market in Adam Smith "The Wealth of Nations" What is the the infinite expandable of market or the Smithian Hypothesis?

Write a cause and effect analysis essay : Write a Cause and effect Analysis essay on one of the following options. Make sure you have a solid introduction, a clear and identifiable thesis, supporting body paragraphs, and a strong conclusion. You should fully explain, define, and describe ..

Determine the elasticity of demand for labour : Analyse the factors that determine the elasticity of demand for labour in the short run and in the long run. then analyse the consequences for the elasticity of demand for domestic labour of the removal of barriers to international trade.

Regulations factor into changes in economic : How do government policies and/or regulations factor into changes in economic activity on both a domestic and global scale? Give a specific example of a policy or regulation that has helped economic activity.

Calculate the oxygen deficit in the river : calculate the oxygen deficit (Do) in the river after it has mixed completely with the waste discharge, the time and location of the maximum deficit, and the minimum DO concentration. Assume a saturation DO for the river of 10 mg/L, that k, = /Q., ..

Innovation important to healthcare management : Why is innovation important to healthcare management. for this exercise you will nurture foresight, which is described in your textbook as a process involving looking ahead to visualize development and their possible impact on the organization, pe..

Cournot equilibrium price for industry : An industry has two firms. The inverse demand function for this industry is p = 74 - 4 q. Both firms produce at a constant unit cost of $26 per unit. What is the Cournot equilibrium price for this industry? Show step by step how you came up with yo..

Demand for the good or service : Explain why the demand for the good or service provided by a firm is elastic or inelastic. How does the elastic or inelastic demand influence pricing decisions by the firm to maximize profit? What are the impacts of elastic demand and inelastic de..

How un policymakers should deal with female circumcision : Which one do you think is the most ethical lens with which to analyze policy issues? Why? Apply your theoretical lens to how UN policymakers should deal with female circumcision/female genital mutilation in the Sudan.

User Account

All Pages