Example Treatment plant with capacity 50*106 I/ day. This treatment plant required 20 mg/l alum. If the water alkalinity as CaCO3 is 6 mg/l. Find the yearly alum quantity and the quantity of CaO which is used as coagulant aid? Atomic weights: Al=27, O=16, H=1, C=12, Са340 9:48 PM

Example Treatment plant with capacity 50*106 I/ day. This treatment plant required 20 mg/l alum. If the water alkalinity as CaCO3 is 6 mg/l. Find the yearly alum quantity and the quantity of CaO which is used as coagulant aid? Atomic weights: Al=27, O=16, H=1, C=12, Са340 9:48 PM

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: A small lake with volume 20.0*10^3 m^3 has no natural pollutant sources. However, a sewage pipe…

A: Given data: C1 (concentration of pollutants in sewage pipe)=100 mg/lVolume of the lake (V) =20,000…

Q: Water quality parameters were measured at the point where a continuous discharge of pollution mixed…

Q: Design a UASB reactor to treat wastewater at 30°C from a food processing plant. The wastewater fow…

A: Given: The influent waste water flow is Q0=500 m3/day. The soluble COD concentration is 6000 mg/L…

Q: A settling tank having a depth of 3.5 m and surface area of 1000 m2 is used to remove particles of…

A: Given: Depth of tank, H = 3.5 m Surface area, A = 1000 m2 Particle size, d = 0.01 mm Specific…

Q: Waste, measured as BOD, is removed according to first order kinetics at a rate constant of 0.4…

A: We knowBODt=BODY1-e-ktso for ·%BODtBODy=100-80=20%so,0.2=1-e-0.4tt=1.9348min

Q: What is the effluent BOD5 of an activated sludge plant, given So = 150 mg/1, y = 0.5 kg biomass/kg…

Q: A lake with a volume of 10.0 x 10^6 m^3 that is fed by a stream with a flow rate of 5 m^3/sec and a…

A: Darw a schematic diagram for given data:

Q: Calculate the pH of a 1.6 M Ca(OH)2 aqueous solution. O 14.2 O 14.5 O 13.8 O 13.5

Q: Determine the total energy production of a run-of-river plant having an total efficiency of 85%. It…

A: According the given question, the given data is Overall efficiency =85% Length of penstock = 400 m…

Q: Before being put in service, a new distribution reservoir has to be disinfected. The reservoir is…

A: Given:- The diameter of the reservoir = 10 m The height of the reservoir = 6 m The quantity of…

Q: Q.3: For a period of 25 years the predicted population is 40*10° capita in a community. The present…

Q: How much hydrochloric acid (kg/d) is required to neutralize a waste with 20 mg/L NaOH and a flowrate…

A: How much hydrochloric acide requiredto neutralize waste = 20 mg/L NaoH The flow rate = 220 L/min

Q: 1. An aerobic reactor receives wastewater at a flow rate of 500m²/d having a COD of 2000mg/L. The…

A: Given :

Q: Еxample Treatment plant with capacity 50*10° 1/day. This treatment plant required 20 mg/l alum. If…

A: We have to find the value of quantity of alum and quantity of CaO used as coagulant yearly according…

Q: Exercise-2 A surface water treatment plant is to process 30000 m'/d for a large city. A cubic rapid…

A: Given: Water Demand= 30000 m3/day Dose of Alum= 35 mg/L Detention time= 2 minutes Viscosity =…

Q: The following data for activated sludge process , discharge=10 m³/min, recycle and wasted solid…

A: Given Data: The discharge is Q=10 m3/min=10x103 l/min. The recycle and wasted solid concentration is…

Q: (d) Biomass and substrate mass balance equations can be merged giving QwXR = () Y/Qo` X VX (SS) - ka…

A: Given:- SRT=20days HRT=20H So=350mg/l S=100mg/l Y=0.15 Kd=0.22per day Calculate :- 1) prove Given…

Q: One of the paper mill factories is located near by the Sg Jerangau, Pahang, and the treated…

Q: A waste water plant treats 28800 m/day of sewage water of density 1000 kg/m3 and kinematic viscosity…

A: Given: The discharge is 28800 m3/day. The density of water is 1000 kg/m3. The kinematic viscosity is…

Q: Find the yearly alum quantity and the quantity of CaO which is used as coagulant aid

Q: Chlorine usage in the treatment of 22,000 cubic metre per day is 8.5 kg/day. The residual after 10…

A: Chlorination can be defined as a method of purification by adding sufficient amount of chlorine to…

Q: Q.5. The design flow for a water treatment plant (WTP) is 1 MGD. The rapid mixing tank will have a…

Q: wastewater treatment plant of daily flow 204 000 m³, consists of two screens, the characteristics of…

Q: we oice of diameter (10 cm) in a reservoir forming a vina contracta of diameter (8.5 cm) and…

A: Introduction : The difference between the theoretical pump discharge and the total leakage is…

Q: 3. Just below the point where a continuous discharge of pollution mixes with a river, the BOD is…

Q: A water treatment plant (WTP) in Pulai Jaya Baru has a design water flow of 3.8 x 103 m/d. The rapid…

A: Designed Water flow = 3.8 × 103 m3/day Alum dosage /liter = 30mg

Q: PLEASE ANSWER QUESTION D You have been contracted to determine the characteristics of raw water…

A: a) Break point chlorination - It gives an idea of chlorine to be added to water so as to ensure the…

Q: 0.5 MLD of waste water is to be treated per day that has 5 day BOD of 150 ppm. The permissible…

A: Given: Quantity of waste water = 0.5 MLD = 5 x 105/day BOD of…

Q: 000 and 85000 in the census year of 1991 and 2001 respectively. Assuming a geometric growth rate and…

A: According to given data A small community had a population of 65000 and 85000 in the census year of…

Q: Lake Taal has a volume of 458 cubic km, and its rate of inflow and outflow are both 175 cubic…

A: Given, V=458 km3q=175 km3/yeart=0 Pollutant concentration p =0.06% Pollutant concentration in the…

Q: A township is to treat 5,00,000 litres of sewage per day which has a 5-days BOD of 150 ppm. An…

Q: A Reverse Osmosis treatment plant is treating salty water on a farm and operates 24 hours a day. It…

A: Data given: Capacity of treatment plant = 10000L/day Treatment capacity = 50% Rate of infiltration =…

Q: A town on the bank of river Ganga discharges 18000 m³ day-¹ of treated wastewater into the river.…

A: Given- For treated wastewater-discharge Q=18000 m3/dayBOD=20 mg/LBOD constant k=0.12 /dayDO =0.4…

Q: 4. A wastewater treatment plant disposes of its effluents into a Units Effluent Stream Item m3/s…

Q: A community has an estimated population 20 years hence equal to 30,000 the present population is…

Q: in) in the aeration basin. You can assume 0=1.024. is 24%, what would be the mass of air (kg)…

A: Data we have Tank volume v = (7.5*2.8*4) m Inlet waste water flow (Q0 )=6500m³/day BOD of primary…

Q: 9- If the average daily water consumption of a city is 32000 m/day, the peak hourly demand will be:…

A: Find the peak hourly demand?

Q: aerobic digestion system generates 10,000 m3 (353,150 standard ft3) of biogas per day. The produced…

A: Given:- biogas=10,000 m3/day To find:- electricity generated

Q: An activated sludge plant treating a flow of 45 litres/sec has an aeration basin volume of 500 m3…

Q: For a population of 2 lac having per capital daily demand of water of 150 litres, determine the…

A: Given, Total population= 2lac = 200000 Per capita demand= 150lpcd Delivery head = 140-120= 20m Head…

Q: A confined aquifer has a transmissivity, T, of 30 m2/day and a storage coefficient, S, of 0.0008. A…

A: A Confined aquifer is a water-saturated aquifer under the ground surface. A change in groundwater…

Q: QI/ An agricultural farm (A = 100 Hectare) is cultivated in August (Number of days in August is 31…

A: given data, A=100 Hectares ∈TMax=1860C∘∈TMin=1240C∘ 1) By blaney criddle method for finding the…

Q: The following data for activated sludge process, discharge%=D10 m/min, recycle and wasted solid…

A: Solution: Given data DischargeQ=10m3/min Influent BOD concentration So=160 mg/leffluent BOD…

Q: Problem 2: Engineers sometimes use pipes as reactors in treatment plants. Suppose that the plant…

A: a.} Consider the continuity equation Qin=Qout=Q b.} Mass balance equation…

Q: Suppose 1 m3 of an aquifer is contaminated with toluene. Groundwater moves through at an actual…

A: Given: The porosity of the soil is 30%. The concentration of Toluene is 4 L. The dissolved…

Q: The treated waste water is being discharged into a river that has a temperature of 15°C. The BOD…

Q: Computation: Ratio Strength, PPM, mg% Show your complete solution. 1. If a city water supply has a…

A: Given data, Amount of nitrate ion present = 250 ppm

Concept explainers

Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.

Question

Example
Treatment plant with capacity 50*106 I/
day. This treatment plant required 20
mg/l alum. If the water alkalinity as
CaCO3 is 6 mg/l. Find the yearly alum
quantity and the quantity of CaO which
is used as coagulant aid? Atomic
weights: Al=27, O=16, H=1, C=12,
Са340
9:48 PM

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

Treatment plant with capacity 50*106 l/day. This treatment plant required 20 mg/l alum. If the water alkalinity as CaCO3 is 6 mg/l. Find the yearly alum quantity and the quantity of CaO which is used as coagulant aid? Atomic weights: Al=27, O=16, H=1, C=12, Ca=40
he raw water supply for a community contains 160 mg/L total particulate matter. It isto be treated by addition of 86 mg/L alum.Essentially all of the added alum precipitatesby this reaction:Al2(SO4)3 · 14H2O ⇒Al(OH)3(s) + 3SO2−4 + 6H+ + 8H2O. For a total flow of 5500 m3/day, compute the daily alum requirement. Answer in units of kg/day. Determine the concentration of solids in the water following alum addition (i.e., the sum of the solids initially present and those formed during treatment). Answer in units of mg/L.
A Semi-solid waste storage has a volume of 1145 m3. The basin is initially 71% empty. The semi-solid density is 1521 kg/m3 is taken away from the storage tank at a rate of 5211.81 kg/day. How long will the basin take to be 91% emptied? Assume the storage is now initially full 23% and re-estimate the time to empty it
For the following wastewater and biomass characteristics: Q0 = 50 m3/d S0 = 60 mg NH4+-N/l Xi0 = 20 mg/l k= 2.5 mg NH4+-N/mg VSS-d K = 1 mg/l Y = 0.34 g VSS/g NH4+-N b = 0/day Calculate the volume of the CSTR required for 50 and 98% removal of ammonia by oxidation to nitrate.
Hello can you help me answer the following question? Thank you The local municipality wants to use this well (the pumping well) as an irrigation water supply well and would like to pump the well at 2000 gal/min. There is a house (Jenny’s) on a well 210 ft away. This pumping would occur in the dry season (assume no recharge) of June, July and August. What would be the drawdown on Jenny’s Well by the end of August. Transmissivity T = 1746.76 gal/min/ft Hydraulic conductivity = 11.645 gal/min/ft2 Storativity = 0.809
1) Design a UASB reactor to treat wastewater at 30°C from a food processing plant. The wastewater fow rate is 500 m3/d with a solubleCOD concentration of 6000 mg/L. The design parameters are asfollows:Reactor effectiveness factor (E) = 0.85Upfow velocity = 1.2 m/hOrganic loading rate = 12 kg sCOD/m3 ·dY = 0.08 kg VSS/kg CODkd = 0.03 d–1μmax = 0.25 d–1Ks = 360 mg/LHeight for gas collection = 3 mUsing the given information, determine the following:a. The reactor area and diameterb. The reactor liquid volumec. Liquid depth and total height of the reactord. The average SRT (assuming 97% degradation of sCOD)
1) Design a UASB reactor to treat wastewater at 30°C from a food processing plant. The wastewater fow rate is 500 m3/d with a solubleCOD concentration of 6000 mg/L. The design parameters are asfollows:Reactor effectiveness factor (E) = 0.85Upfow velocity = 1.2 m/hOrganic loading rate = 12 kg sCOD/m3 ·dY = 0.08 kg VSS/kg CODkd = 0.03 d–1μmax = 0.25 d–1Ks = 360 mg/LHeight for gas collection = 3 mUsing the given information, determine the following:a. The reactor area and diameterb. The reactor liquid volumec. Liquid depth and total height of the reactord. The average SRT (assuming 97% degradation of sCOD) 2) Determine the methane gas production rate (m3/d) for the reactorfrom problem 1) Assume COD equivalent of VSS equals 1.42 kgCOD/kg VSS.
Computation: Ratio Strength, PPM, mg%Show your complete solution.1. If a city water supply has a limit of 250 ppm of nitrate ion, what is the maximum amount of nitrate ion in grams that may be present in a 10,000 gallon reservoir?Amount of nitrate ion in grams = ?
The 8-day, 20°C BOD of a wastewater (K = 0.27 /day) is 247 mg/L. What is the ultimate BOD (BODy, Lo, in mg/L)? Provide your answer to the tenths place (0.1).
What is the required free chlorine concentration to inactive 2 logs of Cryptosporidium at a water temperature of 25oC, if the flow rate is 1000 m3/day and the clearwell storage tank is 2 m wide by 2 m long and 1 m deep? (Assume plug flow conditions and full basin) *Hint : final answer C = 26 mg/L
Problem 2: Engineers sometimes use pipes as reactors in treatment plants. Suppose that the plant flow is 3.3ft3/s (about 2.1 million gallons per day, mgd) and a cylindrical pipe is to be used for disinfection.A. Draw a sketch of the system. Indicate the control volume by a dashed line. What kind of hydrodynamicmodel should you use for a pipe? What mixing conditions should you assume?B. Write the integrated mass balance equation for the pollutant in symbols at steady state. (“Integrated” meansthat your mass balance looks like: C = …) Define your symbols.C. For a pipe 3.5 feet in diameter and 50 feet long, what is the hydraulic residence time in minutes?D. For the pipe in Part C, what value of the first-order rate constant (in min–1) is needed to achieve a 99% removal of bacteria?
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?