Design a set of three rapid gravity filters for treating the water at a water works, which has to supply the water to a town of population 100,000. Per capita demand of the town is 270 litres/day. The rate of filtration of the rapid gravity filters may be taken as 4500 litres/hour/sq-m.

Design a set of three rapid gravity filters for treating the water at a water works, which has to supply the water to a town of population 100,000. Per capita demand of the town is 270 litres/day. The rate of filtration of the rapid gravity filters may be taken as 4500 litres/hour/sq-m.

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 lake contains 2x105 m3 of water and is fed by a river discharging 9x104 m3/yr. Evaporation across…

A: Step 1: Step 2: Step 3: Step 4:

Q: A municipal wastewater flow of 1,000 m³/d contains 400 mg/L BOD5 and is treated to be in a trickling…

Q: It is estimated that the BOD of raw sewage received at a treatment plant serving a population 20,000…

Q: Design the dimension of aquic sand filter in a water purification project that serves acity with a…

Q: rapid sand filter is required to treat the flow of 0.50 m³/sec. The filtration rate is 120 m³ per…

A: Given information, Flow of water = 0.5 m³/s Area of filter = 50 m² Backwashing interval = 30…

Q: A municipal wastewater flow of 1,000 m³/d contains 400 mg/L BOD5 and is treated to be in a trickling…

Q: For a city of population 200,000 capita and WCav =240 l/c/d the average daily WC as follows: a.…

A: Given: The average daily WC: Time 12-2 AM 2-4 4-6 6-8 8-10 10-12 12-2 2-4 4-6 6-8 8-10 10-12 AM…

Q: Q / 2: A city discharges 115000 m³/d of wastewater into a stream whose minimum rate of flow is 8.5…

A: Given Data W→ WastewaterR→ Stream θw = 115000 m3/day = 1.331 m3/secθR = 8.5 m3/sec Velocity of…

Q: A lake contains 2x105 m3 of water and is fed by a river discharging 9x104 m3/yr. Evaporation across…

A: Approach to solving the question: Detailed explanation:To decide the convergence of the substance in…

Q: A meat processing factory's raw effluent has a five day BOD at 20°C of 1760 mg/l. If the k value is…

A: Part a.

Q: Q- If the average sewage from a city is 40x106 l/day and the ar standard of 80 mg/day per capita at…

Q: anaerobic digester at 35°C

A: Given: Average flow rate of industrial wastewater = 1000 m3/day Total quantity of organic substance…

Q: Q- A water treatment plant of capacity, 2 m³/s has filter boxes of dimensions 6 m x 10 m. Loading…

A: A water treatment plant- Plant capacity- Q =2 m3/s,6 m×10 m filter box,Loading rate=100 m3/day/m2,…

Question

●
Design a set of three rapid gravity filters for treating the water at a
water works, which has to supply the water to a town of population
100,000. Per capita demand of the town is 270 litres/day. The rate of
filtration of the rapid gravity filters may be taken as 4500
litres/hour/sq-m.

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: Know the objective of the problem.

VIEW

Step 2: Design of Rapid Filter.

VIEW

Solution

VIEW

Step by step

Solved in 3 steps with 7 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

2. A lake has a volume of 9 million m³ and an average depth of 3 m. There is an influent stream coming in to the lake with a flow rate of 20 m³/s and an ammonia concentration of 1 mg/L. Also, there is a wastewater outfall coming into the lake with a flow rate of 1 m³/s and an ammonia concentration of 180 mg/L. There is an effluent stream leaving the lake. The ammonia in the lake has a decay rate of 0.18/d. a. Draw a schematic diagram showing different inflows and outflows from the control volume. Indicate the values of different variables in the diagram. b. What is the steady-state concentration of ammonia in the lake?
P.equivalent, environment engineering. Civil.
Drainage from a former pesticide manufacturing site enters Bear River at river kilometer 240. The drainage contains DDT, and the concentration of DDT after complete mixing is 5 µg/L. The town of Bear Valley, adult population 15,000, uses the river at river kilometer 40 for its water supply with only chlorination. The drainage has occurred for 30 years. The river velocity is 5 cm/s. Assume the half-life of DDT is 70 days (a) The concentration of DDT in the town's drinking water is mostly nearly (A) 1.2 µg/L (B) 2.3 µg/L (C) 3.2 µg/L (D) 3.9 μg/L (b) With 2 L/day water consumption, adult body mass of 70 kg, and life expectancy of 70 years, the lifetime chronic daily intake of DDT for an adult living in Bear Valley is most nearly (A) 4 x 10³ mg/kg-day (B) 8 x 10 mg/kg-day (C) 6 x 10³ mg/kg-day (D) 2 x 10² mg/kg-day (c) Assume a slope factor of 0.34 (mg/kg-day)-¹ for DDT. The number of excess lifetime cancers that can be expected in the adult population of Bear Valley is most nearly (A)…
For water purification in a city, it is decided to use rapid sand filter after sedimentation tanks, with the following data: Design loading rate per filter 200 m³/m²/day; Design flow rate = 0.5m³/s; Surface area per filter 55m². Find the number of filter units required in the plant.
A municipal wastewater treatment plant processes an average flow of 5000 m³/d. A primary clarifier remove 60% of the suspended solids at average flow. The diameter of the tank is Given: Efficiency Overflow rate (m/m².d) 70 20 40 so
A pharmaceutical wastewater needs a minimum BOD/N/P of 100/3.0/0.7 for biological treatment. The wastewater characteristics are BOD = 740 mg/l, suspended solids = 250 mg/l, soluble nitrogen = 10 mg/l, and soluble phosphorous = 5 mg/l. What ammonium nitrate and phosphoric acid additions would you recommend to ensure adequate nutrients for a daily flow of 28 m3/d?
Sewerage waste was discharged into Mulungushi River from Iris lodge which is located along the banks of the river as they had a problem with a septic tank since it was full. This problem normally occurs in the rain season and this resulted in a mixture having DO of about 9mg/L. The average occupancy rate monthly is about 70%. The septic tanks are emptied after every two weeks. After 5 days, DO dropped to 3mg/L when ZEMA carried out the analysis of the water sample in the river. The reaction constant rate k was found to be 0.22 day ^(-1) and the oxygen consumed in the first five days was 200mg/L. a) How do suspended solids and chemicals affect the surrounding environment? Give two examples. b) What would be the ultimate carbonaceous BOD? c) What will be the remaining oxygen demand after 5 days? d) What advise can you give to the to the lodge owner as a Civil Engineer?
5. You are asked to design a single media filtration system for a drinking water facility. The design flow rate is 20 mgd (million gallons per day). The ideal filter velocity for your system is 8 m/hr. You design a set of filters to be used in parallel. Each filter box has a surface area of 50 m². a. How many filters do you need to construct? b. Estimate the (clean-filter) head loss in kPa? c. What mass removal (filter efficiency) would you expect for an influent stream that contains equal parts (by mass) of 1, 10 and 100 um particles? You can assume an adhesion efficiency a = 0.7. Sand Effective Size (mm) 0.8 Uniformity Coefficient 1.2 Grain Porosity Density (g/cm³) 2.6 0.4 Layer Thickness (m) 1.5
Given the following average hourly demand rates in gallons per minute, (a) findthe uniform 24-hour pumping rate and the required storage necessary to supply for this demand;(b) if the period of pumping is 12 hours (from 12 am to 12 pm) find the required storage.
A city has a population of 100000 with an average rate of demand of 160 litres per head per day. What is the actual number of filters required if the size of each filter is 9 m x 5m? Assume the average filtration rate as 4500 litres per hour per m². (a) 1 (c) 4 (b) 2 (d) 5
An acrated lagoon (a sewage treatment pond that is mixed with air) is being proposed for a small lake com- munity in northern Wisconsin. The lagoon must be designed for the summer population but will operate year-round. The winter population is about half of the summer population. Based on these design assump- tions, the volume of the proposed lagoon is 3420 m³. The daily volume of sewage in the winter is estimated to be 300 m³. In January, the temperature of the lagoon drops to 0°C but it is not yet frozen. If the temperature of the wastewater flowing into the lagoon is 15°C, estimate the temperature of the lagoon at the end of a day. Assume the lagoon is completely mixed and that there are no losses to the atmosphere or the lagoon walls or floor. Also assume that the sewage has a density of 1000 kg m and a specific heat of 4.186 kJ kg K-¹