Question: A city has a clear well with 50 min detention time and uses chloramines to disinfect. The chloramine concentration is maintained at 2.4 mg/L

A city has a clear well with 50 min detention time and

A city has a clear well with 50 min detention time and uses chloramines to disinfect. The chloramine concentration is maintained at 2.4 mg/L and is mostly in the form of monochloramine. Assume the concentration of heterotrophic plate count (HPC) bacteria for the flow entering the clear well is 8500 organisms/mL (which is very high but is used for illustrative purposes). Estimate the average concentration of HPC bacteria leaving the clear well. Assume that the CT you obtained for reservoir water temperature and pH is 106 for 2 log removal.

Step by Step Solution

★★★★★

3.55 Rating (165 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Accounting Questions!

Two uniform spheres, each with mass M and radius R, touch each other. What is the magnitude of their gravitational force of attraction?

Two identical thin rods, each with mass m and length L, are joined at right angles to form an L-shaped object. This object is balanced on top of a shath edge (Fig. 13.41). If the L-shaped object is...

Four balls, each with mass m, are connected by four non-conducting strings to form a square with side a, as shown in Figure P25.64. The assembly is placed on a horizontal non-conducting frictionless...

Design an aerated grit chamber installation for an average waste water flow rate of 0.3 m 3 /s and a peak flow rate of 1.0 m 3 /s. Assume that the detention time at peak = 3.0 min. 4.0 min. and 5.0...

I am in the process of completing my final project. Please help me the Executive Summary, Approach and recommendations portions of the project which is outlined in sections I, II and VII of the...

Calculate the infusion time and completion time for the following IV At 2143 hours, the nurse started 750 mL IV at 75 mL/h Infusion time: ____________ (in hours and minutes) Completion time:...

Please answer all the questions 9. The price system and efficiency [t has been demonstrated that a competitive market economy allocates resources efficiently. Specifically, in a competitive...

"Ron and Janice Mawson are now both 55 years old but Ron was disabled for eight years which resulted in excess medical costs so they had to refinance the house. The current mortgage is $150,000 and...

One way to compare the accumulation of income by alterative business entity forms is to use mathematical models. The following models express the investment after-tax accumulation calculation for a...

Refer to Problem 3-11A. Complete Parts 2, 4, and 5 of Form 941 for Cruz Company for the third quarter of 2016. Cruz Company is a monthly depositor with the following monthly tax liabilities for this...

The Company currently provides a standard two-year limited warranty on all new motorcycles sold worldwide, except for Japan, where the Company provides a standard three-year limited warranty on all...

A Which firm is the most profitable in this market 1 Gray Profit is highest in every situation 2 White Neither they are equally profitable 3 Neither there is no profit made by either firm B What is...

Under the retail inventory method: Multiple Choice A compary measures inventory on its balance sheet by converting retail prices to cost . A company measures inventory on its balance sheet at current...

The conflict between North and South Sudan lead to a negotiated outcome that ultimately resulted in the secession of South Sudan as an independent country and a UN member state. Discuss whether...

What is scope of machine learning in Cloud computing?

List and explain machine learning tools and services in cloud computing provided by google and amazon.

How machine learning is enhancing security over the cloud in past years. Relate any example

In one project, they have asked you to determine the Aluminium density at 650C. Keep in mind that aluminium has a density of 2.70 g/cm' at room temperature (20C). Use data in the Table 1 as a...

Data that describes data is called linkdata. Group of answer choices True False

A rock is shot vertically upward from the edge of the top of a tall building. The rock reaches its maximum height above the top of the building 1.60 s after being shot. Then, after barely missing the...

A 50-turn circular coil (radius = 15 cm) with a total resistance of 4.0 is placed in a uniform magnetic field directed perpendicular to the plane of the coil. The magnitude of this field varies with...

Figure shows a reversible cycle through which 1.00 mol of a monatomic ideal gas is taken. Volume Vc = 8.00%. Process bc is an adiabatic expansion, with pb = 10.0 atm and Vb = 1.00 x 10-3 m3. For the...

For the set of tasks given below, do the following: a. Develop the precedence diagram. b. Determine the minimum cycle time and then calculate the cycle time for a desired output of 500 units in a...

A manager wants to assign tasks to workstations as efficiently as possible and achieve an hourly output of 331/3 units. Assume the shop works a 60-minute hour. Assign the tasks shown in the...

Arrange six departments into a 2 3 grid so that these conditions are satisfied: 1 close to 2, 5 close to 2 and 6, 2 close to 5, and 3 not close to 1 or 2.