A system of rapid sand filters are designed to cater to a population of 2 million with an average demand of 200 lpcd. Backwashing is done daily for 30 min and it consumes 5% of filtered water each day. Design loading rate onto the filters is 5000 1/m²/h. Taking a peak factor of 2 for the water demand, the surface area requirement for the treatment of water is

A system of rapid sand filters are designed to cater to a population of 2 million with an average demand of 200 lpcd. Backwashing is done daily for 30 min and it consumes 5% of filtered water each day. Design loading rate onto the filters is 5000 1/m²/h. Taking a peak factor of 2 for the water demand, the surface area requirement for the treatment of water is

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 sewage sample is tested for BOD5 at 20°C in laboratory and the data obtained are as follows:…

Q: 1. Determine the 5-day 20°C BOD of a wastewater if the 3-day 10°C BOD is 100 mg/L. Assume a…

Q: Consider a pilot scale sand filter with the following characteristics. Diameter of cylindrical…

Q: What is the rapid sand filter surface area required for filtering of 10 MLD water assuming a…

A: water to be filtered Q=10 MLD Filtration rate FR = 100,000 l/m2/day Surface area=?

Q: 0.02 mm silt particles are completely destabilized by adding alum and are passes through completely…

A: size of particle d= 0.02 mm lenght= width =depth = 3.0 m Discharge Q= 0.09 m3/s specific gravity of…

Q: For a sand filtration device, the flow rate of the influent is 30 m3/day with the sand filter area…

A: Given:- The flow rate of the influent is 30 m3/day The sand filter area of 10 m2 To determine:-…

Q: There is sedimentation tank that is used to remove suspended solid particles from an incoming…

A: Given Discharge= 150m3/hr surface area= 15m2

Q: A filter contains 0.55mm sand that has a density of 2650 kg/m3. Calculate the effective size of 1550…

A: Introduction- The point matching line drawn from 10% finer grain size is taken using the grain size…

Q: A system of rapid sand filters are designed to cater to a population of average demand of 200lpcd.…

Q: After initial mixing of a wastewater discharge in a 5-m-deep river, the DO concentration in the…

A: Please refer the attached image for complete solution. THANK YOU !

Concept explainers

Sediment transport

Sediment transport or Soil transport is the movement of solid particles, usually due to the combination of gravitational forces acting on the sediment, and the movement of the liquid at which the sediment enters. Soil erosion occurs in natural systems where the particles are sandstones (sand, rocks), mud, or clay; the liquid is air, water, or ice; and the gravitational force that works to move particles to the landing surface. Sediment transportation or soil migration due to the movement of liquids occurs in rivers, lakes, lakes, oceans, and other bodies of water as a result of currents and waves. Transportation is also caused by glaciers as they flow, and to places on earth under the influence of wind. Soil erosion due to gravity alone is possible in most sloping areas, including hills, scarves, cliffs, and the continental shelf — the continental boundary of the slope.

Question

A system of rapid sand filters are designed to cater to a population of 2 million with an
average demand of 200 lpcd. Backwashing is done daily for 30 min and it consumes 5%
of filtered water each day. Design loading rate onto the filters is
5000 1/m²/h.
Taking a peak factor of 2 for the water demand, the surface area requirement for the
treatment of water is

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: Given data

VIEW

Step 2: Solution

VIEW

Solution

VIEW

Step by step

Solved in 3 steps with 3 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

A single media filter has a 720mm deep bed of sand (diameter = 5 x 10^-4 m, shape factor = 0.8). The porosity of the system is 0.40. The filtration rate is 1.2 (L/s)m^2. The water viscosity is 1.14 x 10^-6 m^2/s. A. What is the Reynold’s number of the filter B. What is the friction factor for the filter? C. What is the total clean head loss across the filter in m?
The bed thickness of a speed sand filter is 1.3 m. A sand with a specific diameter of 0.8 mm and a specific gravity of 2600 kg / m3 will be used as filter material. The shape factor of the sand is 0.9 and the porosity of the clean bed is 0.45. The water layer thickness on the bed is 1.1 m. Average filtration speed is 130 m / day and maximum filtration speed is 180 m / day. The maximum flow rate is 24087 m3 / day and the kinematic viscosity of water is 1.01x10-6 m2 / sec. The maximum head loss in the filter is required to be 1.9 m and negative pressure is not allowed. a) Find the initial head loss of the filter bed. b) Find the required number of filters and the area of each filter in case 3 filters are in reserve. c) Calculate how many meters depth the pollution penetrates at the end of filtration.
Please design a rapid sand filter that will effectively remove 65% of thesuspended solids in a flow of 10 cubic meters per minute. The suspendedmaterial consists of particles that are perfectly spherical with a diameter of 10microns. Please use sand with an effective size of 1 mm and a porosity of 0.5.You should limit your clean bed head loss to 0.5 meters per meter. (Pease use an attachment efficiency, α of 0.75)Viscosity of water =1.0087x10-3 Ns/m2Density of water =998.23 kg/m3What are the dimensions of this filter (Depth and Surface Area)?
9-2. A flow of 20,000 maay which contains 100 mg/L of suspended solids is coagulated with 50 mg/L of alum. If 90 percent of the solids and chemical precipitates is removed in sedimentation estimate: (a) Total dry mass of sludge produced per day. (b) Total wet mass produced per day, assuming the sludge is 5 percent solids by weight. (c) Total volume produced per day, assuming the specific gravity of the wet sludge is 1.05.