Describe the main components and/or steps in designing dual-media filters for drinkingwater treatment. Include the following information: (1) Calculate the number and size of filterbeds given the maximum day flow rate and the filtration rate. (2) Identify the typical diameter ofanthracite and sand used for a dual-media filter. (3) Describe a backwash system including theplacement of backwash troughs, size of the troughs, trough elevation, the backwash flow rate andduration. (4) Explain the minimum water depth required to compensate for the hydraulicheadloss to avoid creating a negative pressure in the filter media. (5) Explain the purpose of“filter-to-waste”
Describe the main components and/or steps in designing dual-media filters for drinkingwater treatment. Include the following information: (1) Calculate the number and size of filterbeds given the maximum day flow rate and the filtration rate. (2) Identify the typical diameter ofanthracite and sand used for a dual-media filter. (3) Describe a backwash system including theplacement of backwash troughs, size of the troughs, trough elevation, the backwash flow rate andduration. (4) Explain the minimum water depth required to compensate for the hydraulicheadloss to avoid creating a negative pressure in the filter media. (5) Explain the purpose of“filter-to-waste”
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Describe the main components and/or steps in designing dual-media filters for drinking
water treatment. Include the following information: (1) Calculate the number and size of filter
beds given the maximum day flow rate and the filtration rate. (2) Identify the typical diameter of
anthracite and sand used for a dual-media filter. (3) Describe a backwash system including the
placement of backwash troughs, size of the troughs, trough elevation, the backwash flow rate and
duration. (4) Explain the minimum water depth required to compensate for the hydraulic
headloss to avoid creating a negative pressure in the filter media. (5) Explain the purpose of
“filter-to-waste”
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