Question

In: Other

A treatment plant being designed for cynusoidal city requires an equalization basin to even outflow and...

A treatment plant being designed for cynusoidal city requires an equalization basin to even outflow and BOD variations.The average daily flow is 0.400m^3/s.The following flows and BOD5 have been found to be typical of the average variation over a day.What volume equalization basin is required to provide for a uniform outflow equal to the average daily flow?Assume the flows are hourly averages and that an addition of 25% to the estimated volume will be provided to account for contingencies.

Time Flow,m^3/s BOD5,Mg/L Time Flow ,m^3/s BOD5 mg/L

0000 0.340 123 1200 0.508 268

0100 0.254 118 1300 0.526 282

0200 0.160 95 1400 0.530 280

0300 0.132 80 1500 0.552 268

0400 0.132 85 1600 0.570 250

0500 0.140 95 1700 0.596 205

0600 0.160 100 1800 0.604 168

0700 0.254 118 1900 0.570 140

0800 0.360 136 2000 0.552 130

0900 0.446 170 2100 0.474 146

1000 0.474 220 2200 0.412 158

1100 0.482 250 2300 0.372 154

Expert Solution

Amanda K answered 2 years ago

A rapid mixing basin is to be designed for a drinking water coagulation plant with a...

A rapid mixing basin is to be designed for a drinking water coagulation plant with a 5 MGD flow. The geometry of the basin is square with a depth equal to 1.5 times the width. The velocity gradient is 950 s·1 with a detention time of 25 s. Calculate a) The basin dimensions using minimum increments of 1" b) The input hp required c) The impeller speed with six flat blades employed and a baffled tank given that the impeller...

8. A water treatment plant with a surface water intake source is being designed for a...

8. A water treatment plant with a surface water intake source is being designed for a municipality that has a water demand of 18 million gallons per day (MGD). It has been determined that the maximum daily summertime water temperature is 20oC, and the minimum daily wintertime water temperature is 5oC. It has been determined that the design of the disinfection system must achieve 2.5-log credit for Cryptosporidium removal or inactivation. Ozone will be used as the disinfectant with a...

- A primary sedimentation basin for a municipal waste water treatment plant treats a flow of...

- A primary sedimentation basin for a municipal waste water treatment plant treats a flow of 3 MGD and removes 70 percent of the total suspended solids..The basin is 60ft in diameter with a depth of 15 ft. the TSS removed (kg)in the basin about ?

Two service lines in a wastewater treatment plant that feed the secondary aeration basin. The proportions...

Two service lines in a wastewater treatment plant that feed the secondary aeration basin. The proportions of time that line 1 and line 2 are in use are given in term of the random variables of X and Y, respectively. The joint distribution describing the proportions X and Y of these two components is given by f(x,y)={23(x2+y2),0≤x,y≤10,eleswhere A. Determine if X and Y are independent. B. The plant needs to have an idea of the combined proportions of the two...

The Iowa City Water Treatment Plant and the University of Iowa Water Treatment Plant remove calcium...

The Iowa City Water Treatment Plant and the University of Iowa Water Treatment Plant remove calcium hardness (Ca2+) by precipitating (making) CaCO3(s). If, after establishing equilibrium with CaCO3(s), the dissolved Ca2+ concentration is 10 mg/L and the pH is 10.5. a. What is the CO32- concentration in mol/L? b. What is the HCO3- concentration in mol/L? c. What is the alkalinity in mg/L as CaCO3?

The city of Bloomington is about to build a new water treatment plant. Once the plant...

The city of Bloomington is about to build a new water treatment plant. Once the plant is designed (D) we can select the site (S), the building contractor (C and the operating personnel (P). Once the site is selected we may erect the building (B). We can order the water treatment machine (W) and prepare the operations manual (M) only after the contractor is selected. We can begin training the operators (T) when both the operations manual and operating personnel...

You are studying a plant that requires a period of cold treatment before it will flower....

You are studying a plant that requires a period of cold treatment before it will flower. You subject a plant to cold treatment, return it to temperatures favorable for growth, and then compare the chromatin state of the DNA taken from: (1) meristem cells from a shoot that originated before the cold treatment; (2) meristem cells from a shoot that developed after the cold treatment; (3) ovule egg cells from a flower on stem 1; (4) seeds from a flower...

A municipal wastewater treatment plant is designed for COD removal and nitrification. The wastewater characteristics and...

A municipal wastewater treatment plant is designed for COD removal and nitrification. The wastewater characteristics and kinetic coefficients are described in the table below. The aeration tank DO concentration is 2.0 mg/L and MLSS concentration is 2500 mg/L. The temperature is 15C. Assume that the concentration of influent NH4-N that is nitrified accounts for 80% of influent TKN. Calculate the following parameters as a function of SRT (i.e., derive mathematical expressions of the following parameters as a function of SRT,...

A water treatment plant is designed for a constant flow rate of 3 MGD. The flocculation...

A water treatment plant is designed for a constant flow rate of 3 MGD. The flocculation system consists of three tanks, each having a water depth of 10 ft and an average hydraulic residence time (HRT) of 30 min. (a) Determine the dimension of each tank (i.e., width and length). (b) Determine whether the flow through velocity is acceptable. (c) The plant is planning to take one tank out of service for maintenance. Determine the increase in power requirement...

Suppose that a city has to justify the net benefits of a proposed water treatment plant....

Suppose that a city has to justify the net benefits of a proposed water treatment plant. (A) Name and discuss the importance of the four things that the City must consider in terms of estimating the Present Value of Net Benefits (PVNB). (B) Calculate the PVNB’s from the following information: Year 0 1 2 3 4 5 6 Cost 100 50 30 20 20 10 10 Benefit 10 20 20 40 100 120 150 (i) PVNB (@ 4%) =...