WASTE WATER GRADE 1 NEWEST 2025 EXAM COMPLETE 100 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
How is pH measured ? - ANSWER-pH is measure with with standard electrode that is typically calibrated
using pH buffers
When finding concentration of TS by evaporating water at 103-105 C the residual remains. Remains are
put through filter and separate TS and FS. After you put TS in 550 C sperates TS into FS and VS. the FS
remain while VS burn away. Between FD and VS which is organic and which is inorganic ? - ANSWER-FS =
inorganic
VS = organic
When finding TSS by evaporating water at 103-105 C the residual remains. Remains are put through
filter. After you put TSS residual in 550 C sperates FSS and VSS. the FS remain while VS burn away.
Between FSS and VSS which is organic and which is inorganic ? - ANSWER-FSS = inorganic
VSS = organic
When finding of TDS by evaporating water at 103-105 C the residual remains. Remains are put through
filter. After you put TDS in 550 C sperates FDS and VDS. Between FDS and VDS which is organic and
which is inorganic ? - ANSWER-FDS = inorganic
VDS = Organic
Generally speaking what is the goal of wastewater ? - ANSWER-To remove the TSS and VDS
How are settleable measured ? - ANSWER-Measured in volume with a Imhoff cone, and not weight.
All settleable solids are TSS ? - ANSWER-Yes all settleable solids are TSS but not all TSS are settleable.
What is the purpose of primary clarifiers ? - ANSWER-Removal of TSS
The Imhoff cone test is used to monitor what ? - ANSWER-Monitor the efficiency of of primary clarifiers
, What percent of TSS should be removed from primary clarifiers ? - ANSWER-95%
Draw the Solids Schematic?Awnser is on pg 17. What is included ? 5 words and 11 abbreviations -
ANSWER-(Incineration: VS, FS) TS (Filtration: (TDS, VDS, FDS)(TSS, VSS, FSS, TSSset, TSSnon)
What are the 3 gasses associated with with waste water treatment ? - ANSWER-1. Hydrogen sulfide
2. Methane
3. Carbon Dioxide
What is the H2S? - ANSWER-hydrogen sulfide
What are the 7 apparent characteristics of hydrogen sulfide (H2S) ? - ANSWER-1. Toxic: high
concentration kills
2. Flammable and explosive
3. Odor of rotten eggs
4. Quickly dulls one's sense of smell, giving one the false impression that the gas has dissipated
5. Paralyzed one's ability to breathe
6. Corrosive especially to concrete
7. Heavier than air, collecting in below grade areas like manholes, wet wells, dry wells, and other low
lying areas
What is H2S a product of ? - ANSWER-Is a product of anaerobic decomposition of organic matter
How much hydrogen sulfide is used in anaerobic digesters wastewater plants and digester gas ? -
ANSWER-It's in parts per million parts (ppm) and is always less than 1%
What is methane a product of ? - ANSWER-Methane is a product of anaerobic decomposition
How much methane is in the gas produced by anaerobic digesters ? - ANSWER-Average about 62%-70%
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
How is pH measured ? - ANSWER-pH is measure with with standard electrode that is typically calibrated
using pH buffers
When finding concentration of TS by evaporating water at 103-105 C the residual remains. Remains are
put through filter and separate TS and FS. After you put TS in 550 C sperates TS into FS and VS. the FS
remain while VS burn away. Between FD and VS which is organic and which is inorganic ? - ANSWER-FS =
inorganic
VS = organic
When finding TSS by evaporating water at 103-105 C the residual remains. Remains are put through
filter. After you put TSS residual in 550 C sperates FSS and VSS. the FS remain while VS burn away.
Between FSS and VSS which is organic and which is inorganic ? - ANSWER-FSS = inorganic
VSS = organic
When finding of TDS by evaporating water at 103-105 C the residual remains. Remains are put through
filter. After you put TDS in 550 C sperates FDS and VDS. Between FDS and VDS which is organic and
which is inorganic ? - ANSWER-FDS = inorganic
VDS = Organic
Generally speaking what is the goal of wastewater ? - ANSWER-To remove the TSS and VDS
How are settleable measured ? - ANSWER-Measured in volume with a Imhoff cone, and not weight.
All settleable solids are TSS ? - ANSWER-Yes all settleable solids are TSS but not all TSS are settleable.
What is the purpose of primary clarifiers ? - ANSWER-Removal of TSS
The Imhoff cone test is used to monitor what ? - ANSWER-Monitor the efficiency of of primary clarifiers
, What percent of TSS should be removed from primary clarifiers ? - ANSWER-95%
Draw the Solids Schematic?Awnser is on pg 17. What is included ? 5 words and 11 abbreviations -
ANSWER-(Incineration: VS, FS) TS (Filtration: (TDS, VDS, FDS)(TSS, VSS, FSS, TSSset, TSSnon)
What are the 3 gasses associated with with waste water treatment ? - ANSWER-1. Hydrogen sulfide
2. Methane
3. Carbon Dioxide
What is the H2S? - ANSWER-hydrogen sulfide
What are the 7 apparent characteristics of hydrogen sulfide (H2S) ? - ANSWER-1. Toxic: high
concentration kills
2. Flammable and explosive
3. Odor of rotten eggs
4. Quickly dulls one's sense of smell, giving one the false impression that the gas has dissipated
5. Paralyzed one's ability to breathe
6. Corrosive especially to concrete
7. Heavier than air, collecting in below grade areas like manholes, wet wells, dry wells, and other low
lying areas
What is H2S a product of ? - ANSWER-Is a product of anaerobic decomposition of organic matter
How much hydrogen sulfide is used in anaerobic digesters wastewater plants and digester gas ? -
ANSWER-It's in parts per million parts (ppm) and is always less than 1%
What is methane a product of ? - ANSWER-Methane is a product of anaerobic decomposition
How much methane is in the gas produced by anaerobic digesters ? - ANSWER-Average about 62%-70%
