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Home Courses Treatment of Urban Sewage Course materials Lectures 1. Elaboration Question 4

1. Elaboration Question 4

Course subject(s) 1. Wastewater treatment plant overview

Question 4 Solids in wastewater

The following acronyms are used to describe solids in wastewater.

a) Describe what each acronym stands for.

b) Draw a flow chart to illustrate how they are measured from a wastewater treatment sample.

c) The following results were gained from solids measurement of a 1 l wastewater sample:

    • after evaporation at 103 °C: 720 mg
    • after evaporation and furnace at 550 °C →350 mg
    • filter after evaporation at 103 °C: 220 mg
    • filter after evaporation and furnace at 550 °C: 55mg

Identify or calculate all the values of the solids groups listed in the table above for this wastewater sample.

d) Calculate the organic fraction of the total solids, suspended solids, and filterable solids.

Acronym Meaning Procedure for measurement
TS
TSS
VSS
FSS
TVS
FS
VFS
FFS
TFS

Elaboration Question 4

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