Make sure to discuss how the mixing systems differ between the coagulation (rapid mix) and flocculation (slow mix) steps in the process.

Q: B/ design circular tank to treat 5000m3/day of water with particles of 0.003cm, specific density…

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Q: The theoretical density and bulk density of a bituminous mix are 2.48 gm/cm³ and 2.39 gm/cm³,…

A:

Q: Gravity thickener analysis and design − a gravity thickener concentrates waste activated sludge…

A: Given Data: The waste activated sludge flow rate is 250,000 gal/day. The suspended solids…

Q: What are the three common HMA mix design procedures b 2. List five mic design properties (not…

A: Part 1  Three common HMA mix design methods are  Superpave mix design method Marshall mix design…

Q: A mixed liquor sample form an activated sludge plant was settled in a one-litre measuring cylinder…

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Q: Q4: We have a mixing ratio of 1:2:4:0.5 what does it mean. Calculate their quantities in m3? The…

A: To Determine Quantities of cement, sand, Gravel and water.

Q: d) e) f), with full solution

A: d) The yield point is the point on a stress-strain curve that indicates the limit of elastic…

Q: The theoretical density and bulk density of a bituminous mix are 2.48 gm/cm³ and 2.39 gm/cm³,…

A:

Q: Which condition would require decreasing the mixing speed in the slow mixing tank? * Warm inlet…

A: Introduction : Prior to sludge thickening or dewatering, slow mixing or flocculation tanks are used…

Q: Q2: (12.5 Marks) Two-stage softening: A water with the ionic characteristics shown below is to be…

A: Step 1: 1. Draw the treatment units scheme The typical treatment units in a two-stage softening…

Q: Raw primary sludge at a solids concentration of 4% is mixed with waste activated sludge at a solids…

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Q: From the test specifications given in Table 5.2(attached), show that thecompactive energy in method…

A: compaction of the soil is expressed as the term of dry unit weight of soil. compaction…

Q: Find the quantity of material for one batch of a mechanical mixer volume 0.452 m3 if the mix design…

A: The values given in the question are as follows Volume of one batch=0.452 m3 1 m3 design mix…

Q: For Marshall mix design, if the VTM value is more than needed the bitumen content should be reduced.…

A: Given statement: For Marshall mix design, if the VTM value is more than needed the bitumen content…

Q: Explain the following terms as used in sludge processing: a) Alkalinity, b) Hydraulic detention…

A: From the given question it is required to define the following terms-

Q: SS=4,000 mg/L raw wastewater has the following characteristics: w=12 MGD Os=220 mg/L pended solids…

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Q: Design a rapid mix basin for 1 million gallons per day flow. The rapid mix should be S feet deep and…

A: According to given data .rapid mix basin for 1 million gallons per day flow.The rapid mix should be…

Q: 1. The required reactor detention time, 0. 2. The reactor basin volume, V, in m³. 3. The net waste…

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Q: A mixed liquor sample form an activated sludge plant was settled in a one-litre measuring cylinder…

A: To find out the sludge volume idex of the given sample.

Q: 21 /Choose the correct answer. 1- hydration of C2S is a) High rate of temperature rate of…

A: Hydration of C3S IS a) high rate of temperature Hydration of C3S results increase in temperature…

Q: Example:- The design data shown in table, are used in the sample of paving mixture. Calculate…

A:

Q: - Calculate total BOD,

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Q: A- Extended aeration B- Conventional C-High rate aeration D-Step feed aeration **Good Luck**

A: Answer - Extended Aereation Extended aeration systems provide long residence times  with low F / M…

Q: Bottle No. Volume of Initial PH Final PH Initial turbidity Final turbidity coagulant stock need (ml)…

A: Bottle 1 & 2  PH = 5.6 PH = -logH+10 5.6 =   -logH+10 H+= 10-5.6 mol/ml concentration(mg/ml)  =…

Q: vides water for 16000 people with average consumption of 160 L/person/day, retention time in rapid…

A: Given data  Power input(P) = 0.5 KW = 500 W  Population = 16000  Water demand = 160L/Person/day…

Q: (a)The purpose having rapid mix process in figure  b)The benefit having disinfection process as in…

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Q: A/Determine the dimensions of settling tank to treat 1000m/day of water with particles of 0.02mm and…

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Q: The plant trial should... * O be conducted prior to the Marshall Mix design method consider the…

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Q: Before it is permissible for the dozer to "track" over an exposed pipe in order to get to the other…

A: Dozer is a heavy machine which is used to level , digging and compacting the soil .

Q: Define the numerous kinds of vibratory compactors that are utilized in the compaction process.

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Q: Overloading in the pugmill of the drum mix plant can cause non-uniform mixing. True False

A: Answer :- True Explanation :-  Overloading in the pugmill of the drum mix plant causes non uniform (…

Q: 6. A tertiary treatment plant treats a municipal secondary effluent and is to employ fixed-bed…

A: Reference : Environmental Engineering, Waste water treatment plant. Given : Flow, COD, Contact time…

Q: sequence of steps for Superpave Mi>

A: Superpave Mix Design- One of the method of the construction of the roads in which asphalt binder and…

Q: Question 1 The given data shows a sieve analysis of a soil sample. Classify the soil using AASHTO…

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Q: ation of C2S is a) High rate of temperature rate of temperature 2- Low heat Portland cement is a)…

A: A cement is a binder, a substance used for construction that sets, hardens, and adheres to other…

Q: Q1 /Choose the correct answer. 1- hydration of C2S is a) High rate of temperature rate of…

A:

Q: List five mix design properties (not aggregate properties) in Marshall Mix design procedure d. List…

A: Q3  Properties of HMA mix design in superpave mix design procedure are as follows: Deformation…

Q: Evalaution sof aggregates Sources.

A: Evaluation of aggregates involves the 3-types of methods. There is a sampling of the aggregates, the…

Q: The theoretical density and bulk density of a bituminous mix are 2.48 gm/cm³ and 2.39 gm/cm³,…

A: To determine the  a) percent air void b) Volume% of bitumen c) VMA d) VFB

Q: as Cao and Na2CO3, to sof 130 mg/L as CACO3. The ic Assume the lime is 90% pu

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Q: advantages and disadvantages of the following method:   STREAK POUR

A: The spread plate strategy is a method to plate a fluid example containing microorganisms with the…

Q: Calculate the amount of water, additives and cement to prepare 600 mL of slurry for the following…

A: Solution: Given Formula in volume Product A Product B = 0.02gal/sk product C = 0.5% BWOC Product D =…

Types of Concrete

Concrete is the fundamental material used in civil engineering such as building materials for building structures. Concrete is an aggregate mixture of cement, sand, and fine and coarse rock pieces. The cement acts as a binding material that holds the compositions together, sets, and hardens with time. Apart from cement, there are other different types of binding materials used, such as lime concrete, bitumen, asphalt, and so on.