2. The raw water to be coagulated has a pH of 7.5, determine how much alkalinity the watermust have for the addition of 150 mg/L alum without affecting the pH.

pH of coagulated water = 7.5 After adding 150mg/L of alum, we have to determine the change in…

Answered: 2. The raw water to be coagulated has a…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

An industrial waste with a flowrate of 110 L/min contains 40 mg/L of zinc. Calculate: 1.) the pH required to maintain a zinc concentration of 2.6 mg/L (EPA's industrial limit for discharge into a sanitary sewer), and 2.) the dose of hydrated lime (Ca(OH)2) required (g/min).
the combined volume of waste water from the process and wash, and cooling and sanitary waste from an industry is reduced by
Air is passed through the sludge 1. To provide the biomass with the oxygen required for removing the organic matter from the sewage 2. To keep the biomass suspended thus bringing them in close contact with the organic matter in the sewage 3. To kill pathogens 4. To reduce the hydraulic retention time and thus reduce the size of the bioreactor O 2 and 3 only O 1 and 2 only O All of the above O 1,2 and 4
For each of the following constituents that might be found in water or wastewater, provide two examples of a unit operation that would be useful in removing that consitutent. a. Giardia lamblia (protozoan) b. Arsenic c. Bentonite (clay)
Concentrations of Pb, Cu, and Mn in rainwater collected in Minneapolis were found to be 9.5, 2.0, and 8.6 ug/L, respectively. Express these concentrations as nmale/L.
Activated sludge is treated in an aeration tank. The HRT is 8 hr, and the SRT is 6 days. The influent BOD concentration is 200 mg/l, and the effluent BOD concentration is 10.2 mgn. With a yield coefficient of 0,4 and a microbial death rate of 0.1 day1, what is the biomass concentration in the tank?Need Help ASAP
The sludge produced from the aeration tank of the activated sludge process has a solid content of 2% (by weight) is introduced in sludge thickener, where the sludge volume is reduced to half. Assuming that the amount of solid in supernatant from the thickener is negligible, the specific gravity of sludge solids is 2.2 and density of water is 1000 kg/m³ and density of sludge is 1011 kg/m³. What is the solid content (by weight) of the thickened sludge? 3.96% O4% 4.24% 3.36%
A sample of water at pH 10.5 has 36 mg/L of CO3-2 and 26 mg/L of HCO3-Including the contribution of [H+] and [OH-], find the alkalinity as CaCO3.
A 50 ml sample of industrial wastewater is taken into a silica crucible. The empty weight of the crucible is 54.352 g. The crucible with the sample is dried in a hot air oven at 104°C till a constant weight of 55.129 g. Thereafter, the crucible with the dried sample is fired at 600°C for 1 h in a muffle furnace, and the weight of the crucible along with residue is determined as 54.783 g. The concentration of total volatile solids is
Which of the following is not a piece of EPA legislation designed to protect the environment? Clean Water Act Clean Air Act O Civil Rights Act ORCRA D Question 2 What water contaminant was responsible for the 2014 Flint, Michigan water crisis? O Mercury Lead O PCB Giardia Question 3 What condition must be satisfied for us to use the Continuously Stirred Tank Reactor (CSTR) approach? Uniform well-mixed conditions Mixing occurs only in the axial direction The substance is conservative There is only one inflow channel D Question 4 A plug flow reactor is O Less efficient at removing pollutants than a CSTR Has the same efficiency at removing pollutants as the CSTR More efficient at removing pollutants than a CSTR Can be more or less efficient than the CSTR depending on the pollutant

Recommended textbooks for you

Structural Analysis

Civil Engineering

ISBN:

9781337630931

Author:

KASSIMALI, Aslam.

Publisher:

Cengage,

Structural Analysis (10th Edition)

Civil Engineering

ISBN:

9780134610672

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Principles of Foundation Engineering (MindTap Cou…

Civil Engineering

ISBN:

9781337705028

Author:

Braja M. Das, Nagaratnam Sivakugan

Publisher:

Cengage Learning

Structural Analysis

Civil Engineering

ISBN:

9781337630931

Author:

KASSIMALI, Aslam.

Publisher:

Cengage,

Structural Analysis (10th Edition)

Civil Engineering

ISBN:

9780134610672

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Principles of Foundation Engineering (MindTap Cou…

Civil Engineering

ISBN:

9781337705028

Author:

Braja M. Das, Nagaratnam Sivakugan

Publisher:

Cengage Learning

Fundamentals of Structural Analysis

Civil Engineering

ISBN:

9780073398006

Author:

Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning

Publisher:

McGraw-Hill Education

Sustainable Energy

Civil Engineering

ISBN:

9781337551663

Author:

DUNLAP, Richard A.

Publisher:

Cengage,

Traffic and Highway Engineering

Civil Engineering

ISBN:

9781305156241

Author:

Garber, Nicholas J.

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS

2. The raw water to be coagulated has a pH of 7.5, determine how much alkalinity the water must have for the addition of 150 mg/L alum without affecting the pH.