Texas Wastewater Class A (Test 3)
Questions & Answers
What removes Total Suspended Solids from a sample (TSS) - SOLVED ANSWER-
filtration
What chapter of the Texas Water Code gives T C E Q authority to control discharges in
Texas. - SOLVED ANSWER-Chapter 26
Inorganic solids include - SOLVED ANSWER-sand, grit and minerals
Organic solids include - SOLVED ANSWER-organic materials from plants, animals or
humans
A good plant influent pH is about - SOLVED ANSWER-7.2
A simple method for indicating when to waste sludge is - SOLVED ANSWER-30 minute
settling test
What is the expected organic loading of a stabilization pond and what is the detention
time in days? - SOLVED ANSWER-35 pounds, of B O D, per acre, per day, and a
detention time of 30 Days
Calcium Hypochlorite or HTH, is a - SOLVED ANSWER-strong Oxidizer and reacts
violently with oil and hydro carbons.
Total solids in wastewater are the sum of - SOLVED ANSWER-Settleable and volatile
solids
,This treatment device is commonly used to separate,
and remove large solids from raw wastewater - SOLVED ANSWER-A Mechanically
raked bar screen
This test would give the best information
on how efficiently a trickling filter was operating - SOLVED ANSWER-Percent BOD
Removal
This trickling filter problem could be
reduced by increasing the re-circulation ratio - SOLVED ANSWER-Filter files
The minimum size for a gravity flow sewer line on
city right-of-way and the minimum grade is - SOLVED ANSWER-6 inch and a grade
of .50 percent
The most accurate way to find the average wastewater
flow rate in an existing 10-inch sewer main is - SOLVED ANSWER-Obtaining actual
flow data & verifying with field data
What is the greatest advantage for using fiberglass
manholes in areas with high groundwater? - SOLVED ANSWER-fiberglass is not
subject to infiltration
Excessive power consumption by a pump could be caused by - SOLVED ANSWER-
Worn bearings and worn impeller
In an excavation, if a ladder is used as a means of exit, it must
, extend how far above ground, and how far apart
laterally - SOLVED ANSWER-3 feet / 25 feet laterally
the best to determine if a
storm drain is connected to a sanitary sewer line is a - SOLVED ANSWER-Smoke Test
When added to water what does chlorine form - SOLVED ANSWER-it forms
Hypochlorite, and Hydrochloric acid
When ammonia is present in wastewater and
reacts with chlorine what is formed - SOLVED ANSWER-When ammonia is present in
wastewater, and
reacts with chlorine, Chloramines are formed.
Besides disinfection, chlorine has other uses
at the wastewater treatment plant such as - SOLVED ANSWER-Reduces BOD, Odor,
Algae growth, Helps with Grease
TCEQ allows the reuse of wastewater, some of these include - SOLVED ANSWER-
Irrigation, aquifer recharge, cooling towers and fire protection
All reclaimed water piping must be the color - SOLVED ANSWER-purple
When a municipal wastewater effluent has a high nitrate
level, and low ammonia level, this most likely means - SOLVED ANSWER-a high
degree of aerobic treatment
Questions & Answers
What removes Total Suspended Solids from a sample (TSS) - SOLVED ANSWER-
filtration
What chapter of the Texas Water Code gives T C E Q authority to control discharges in
Texas. - SOLVED ANSWER-Chapter 26
Inorganic solids include - SOLVED ANSWER-sand, grit and minerals
Organic solids include - SOLVED ANSWER-organic materials from plants, animals or
humans
A good plant influent pH is about - SOLVED ANSWER-7.2
A simple method for indicating when to waste sludge is - SOLVED ANSWER-30 minute
settling test
What is the expected organic loading of a stabilization pond and what is the detention
time in days? - SOLVED ANSWER-35 pounds, of B O D, per acre, per day, and a
detention time of 30 Days
Calcium Hypochlorite or HTH, is a - SOLVED ANSWER-strong Oxidizer and reacts
violently with oil and hydro carbons.
Total solids in wastewater are the sum of - SOLVED ANSWER-Settleable and volatile
solids
,This treatment device is commonly used to separate,
and remove large solids from raw wastewater - SOLVED ANSWER-A Mechanically
raked bar screen
This test would give the best information
on how efficiently a trickling filter was operating - SOLVED ANSWER-Percent BOD
Removal
This trickling filter problem could be
reduced by increasing the re-circulation ratio - SOLVED ANSWER-Filter files
The minimum size for a gravity flow sewer line on
city right-of-way and the minimum grade is - SOLVED ANSWER-6 inch and a grade
of .50 percent
The most accurate way to find the average wastewater
flow rate in an existing 10-inch sewer main is - SOLVED ANSWER-Obtaining actual
flow data & verifying with field data
What is the greatest advantage for using fiberglass
manholes in areas with high groundwater? - SOLVED ANSWER-fiberglass is not
subject to infiltration
Excessive power consumption by a pump could be caused by - SOLVED ANSWER-
Worn bearings and worn impeller
In an excavation, if a ladder is used as a means of exit, it must
, extend how far above ground, and how far apart
laterally - SOLVED ANSWER-3 feet / 25 feet laterally
the best to determine if a
storm drain is connected to a sanitary sewer line is a - SOLVED ANSWER-Smoke Test
When added to water what does chlorine form - SOLVED ANSWER-it forms
Hypochlorite, and Hydrochloric acid
When ammonia is present in wastewater and
reacts with chlorine what is formed - SOLVED ANSWER-When ammonia is present in
wastewater, and
reacts with chlorine, Chloramines are formed.
Besides disinfection, chlorine has other uses
at the wastewater treatment plant such as - SOLVED ANSWER-Reduces BOD, Odor,
Algae growth, Helps with Grease
TCEQ allows the reuse of wastewater, some of these include - SOLVED ANSWER-
Irrigation, aquifer recharge, cooling towers and fire protection
All reclaimed water piping must be the color - SOLVED ANSWER-purple
When a municipal wastewater effluent has a high nitrate
level, and low ammonia level, this most likely means - SOLVED ANSWER-a high
degree of aerobic treatment
