Assume that the primary sedimentation process in this treatment facility removes 60% of the suspended solids (SS) and 40% of the BODs of the raw sewage. Determine the SS and BODs concentrations in the primary sedimentation effluent flow.
Assume that the primary sedimentation process in this treatment facility removes 60% of the suspended solids (SS) and 40% of the BODs of the raw sewage. Determine the SS and BODs concentrations in the primary sedimentation effluent flow.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
![3. Consider the design of a wastewater treatment plant (WWTP) for a community with the
following design data:
TABLE 1: Design Data
Design data Flow-0.150m³. s-¹
Influent suspended solids-280mg L-¹
Influent BODs = 500mg L-¹
-1
Sludge concentration= 6.0%
Efficiency= 60%
Effective length= 40.0 m
Width = 10.0 m
Liquid depth = 2.0 m
Weir length= 75.0 m
Table 2: Acceptability Criteria
Parameter
Detention time (hours)
Overflow rate (m- day)
Weir loading (m³-day m¹')
Acceptable range
1.5-2.5
80-120
<250
(c) Assume that the primary sedimentation process in this treatment facility removes 60%
of the suspended solids (SS) and 40% of the BODs of the raw sewage. Determine the
SS and BOD5 concentrations in the primary sedimentation effluent flow.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F562002de-8b59-4ff9-ac13-c87951fe43ac%2F95b40af2-5d60-4dfb-a4c1-24c742138e5c%2F3af96g_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3. Consider the design of a wastewater treatment plant (WWTP) for a community with the
following design data:
TABLE 1: Design Data
Design data Flow-0.150m³. s-¹
Influent suspended solids-280mg L-¹
Influent BODs = 500mg L-¹
-1
Sludge concentration= 6.0%
Efficiency= 60%
Effective length= 40.0 m
Width = 10.0 m
Liquid depth = 2.0 m
Weir length= 75.0 m
Table 2: Acceptability Criteria
Parameter
Detention time (hours)
Overflow rate (m- day)
Weir loading (m³-day m¹')
Acceptable range
1.5-2.5
80-120
<250
(c) Assume that the primary sedimentation process in this treatment facility removes 60%
of the suspended solids (SS) and 40% of the BODs of the raw sewage. Determine the
SS and BOD5 concentrations in the primary sedimentation effluent flow.
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