- Inflection point: Little buffering, no acid added but pH decreasing
How does temperature affect water quality? - ANSWERSIncreases temp causes: increases ionic strength
(EC), and decreases oxygen solubility (D))
Dissolved Solids - ANSWERS- Measured by conductance
- (<~1nm)
Colloidal Solids/ Small suspended - ANSWERS- Measured by turbidity
, - (~1nm to ~10μm)
Suspended Solids - ANSWERS- Measured by mass gravitational methods
- (>~10μm)
Total Suspended Solids - ANSWERS- weight of residue from solution after filtering and drying at (103 -105
deg)
- TSS = organic + inorganic fractions
- TSS = Wfs - Wf/ V
Wfs = weight of filter + dry filtered solids
Total dissolved solids - ANSWERS- weight of residue from solution after filtering and drying at (180 deg)
- TDS = Wfrd - Wd/ V
Wfrd = weight of filtrate residue + dish
Fixed Suspended Solids - ANSWERS- the inorganic material remaining after the filter after TSS is known
- FS = B - C/V
B = weight of residue + dish/filter after ignition
C = weight of dish/filter
Volatile Solids - ANSWERS- organic solids concentration after igniting at 550 deg ( lost weight as carbon
dioxide in an aerobic process)
- VS = A - B /V
A = weight of residue + dish/filter before ignition
B = weight of residue + dish/filter after ignition
Inorganic - ANSWERS- Can't be combusted - no carbon that can combust to CO2
- salts, metals
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