What is the initial dissolved-oxygen deficit

Assignment Help Civil Engineering

Reference no: EM131251996

A river traveling at a velocity of 10 km/day has a dissolved-oxygen content of 5 mg/L and an ultimate CBOD of 25 mg/L at distance x = 0 km. that is, immediately downstream of a waste discharge. The waste has a CBOD decay coefficient, k₁ of 0.2 day^-1. The stream has a reaeration rate coef-ficient, k₂ of 0.4 day^-1. and a saturation di:mind-oxygen concentration of 9 mg/L.

(a) What is the initial dissolved-oxygen deficit?

(b) What is the location of the critical point, in time and distance?

(d) What is the dissolved-oxygen con-centration at the critical point?

Reference no: EM131251996

Questions Cloud

When we claim that certain moral values or principles apply : When we claim that certain moral values or principles (e.g., do not steal) apply or should apply to all people, everywhere, we are saying that some values or principles are.

What is the dissolved-oxygen deficit : A stream with a temperature of 25°C has a dissolved-oxygen concentration of 4 mg/L. What is the dissolved-oxygen deficit (mg/L)?

Discuss the relevance of memos and web pages : What writing formats do I use when considering inter-office communications (between or among staff within your company)? Discuss the relevance of memos, web pages, letters, proposals, research and formal reports

Monetary base and the money supply : Continue with the same logic what are the Monetary Base and the Money Supply, R, C , D , and L ; for the following Friday , Monday , Tuesday and Wednesday? Continue to assume the currency-deposit ratio and reserve-deposit ratio are 0.25. ( don't ..

What is the initial dissolved-oxygen deficit : A river traveling at a velocity of 10 km/day has a dissolved-oxygen content of 5 mg/L and an ultimate CBOD of 25 mg/L at distance x = 0 km. that is, immediately downstream of a waste discharge.

Control over all standard macroeconomic policy tools : If you were the ultimate ruler of Australia, and had control over all standard macroeconomic policy tools, what response if any would you propose if Australia had just entered a recession due to a decrease in global demand for our minerals and res..

Find the spacing between the conductors : If the value of potential gradient at which ionisation occurs can be taken as 30 kV per cm, find the spacing between the conductors.

Us unemployment rate : On 2nd April 2016 Forbes published an article titled "Excellent News: US Unemployment Rate Rises" regarding a rise in the US unemployment rate from 4.9% to 5.0%. Other analysis similarly considered it good news.

Impact both consumers and producers : A per-unit tax on carrots could impact both consumers and producers. How can we measure how much each group is hurt by the tax? And what factors are important determinants of how this burden is shared between consumers and producers?

User Account

All Pages