You are approached by a local consulting firm and are asked to design a full-scale wastewater treatment plant for COD removal only. Most of the influent COD is present in acetate form, and the nitrogen source in the influent is nitrate. The system will be aerobic. The consulting firm provides you with all details necessary for the design except the bacterial yield co-efficient, which they do not have due to the unknown bacterial population. How would you approach this design? Make necessary assumptions.

Treatment plant questions

Please include Equations used. This is for water and wastewater engineering

Southide Water Treatment Plant of Tyler, TX What are the general characteristics of the waste water entering the plant?

Well, that design isn’t going to work, either. I think about the only thing I can do is to try tochange the concentration of the stream that is leaving Earle Hall. I need my recycle stream tocontain 99% of the acetone that leaves Earle, and have a mass% of acetone of 95% (or else Ican’t reuse it), and I need the stream that is sent to the city’s sewer to have 1 mass% acetone.What is the mass% of acetone in the stream leaving Earle that makes this possible? Assume thatthe stream leaving Earle Hall is still 250,000 lbm every day

You have been treating a wastewater with bacteria that have the following kinetic coefficients: k= 16 mg BODL/mg VSS-day Ks = 10 mg BODL/1 b =0.2/day Y = 0.35 mg VSS/mg BODL fa=0.8 A genetic engineer comes to you and claims he can "fix" your bacteria so they are more efficient. The fixed bacteria will have b=0.05/day and fa= 0.95, while all other coefficients are the same. Using a chemostat reactor, you were successfully using a safety factor of 30, and you plant to continue doing so. How would the genetic engineers plan affect your sludge production and oxygen requirements? Assume Xº=0, Sº=200 mg BODL/1). In what ways are the new bacteria more efficient?

Please include Equations. This is for a water and wastewater review, it is not for a grade. I just need to understand the problem.

You have been treating a wastewater with bacteria that have the following kinetic coefficients: k= 16 mg BODL/mg VSS-day Ks = 10 mg BODL /l b =0.2/day Y = 0.35 mg VSS/mg BODL fd = 0.8A genetic engineer comes to you and claims he can “fix” your bacteria so they are more efficient. The fixed bacteria will have b=0.05/day and fd = 0.95, while all other coefficients are the same. Using a chemostat reactor, you were successfully using a safety factor of 30, and you plant to continue doing so. How would the genetic engineers plan affect your sludge production and oxygen requirements? Assume X0=0, S0=200 mg  BODL/l). In what ways are the new bacteria more efficient?

I have done parts 1-3 and provided the answers I need parts 4-6 please and show the work I can't get past part 4

An effluent stream sample (500 mL) from a metal-working facility contains 0.52 g nickel sulphate. (i) What is the nickel concentration of this effluent stream (in mg/L)? (ii) Would you regard this concentration as suitable for discharge to the local sewage system? (iii) How much total nickel (in kg) leaves the facility per year in this stream if ~1 ML of effluent is produced?