Chapter 9 Water Management And Control Flashcards
What factors contribute to water quality?
Water quality is first depending on the source of supply to the buildings or site and then on the conditions of subsequent infrastructure and components: piping, valves, meters, backflow preventer’s, sanitary another fixtures, pumps, water tanks, and storage vessels.
Describe the managers responsibility for treating process waste water.
The manager’s responsibility would be to ensure that the waste water is treated prior to disposal.
For small quantities it is often more cost-effective for the generator of the west to collect and store it for later removal treatment by an off site contractor in waste management.
What are some of the conservation and sustainability measures that can be taken regarding potable water?
Low flow fixtures
Recycle/reuse of gray water
Low-water-demand landscaping or xeriscaping
Drip irrigation and soaker hoses
Adherence to LEED exterior maintenance requirements
A documented plan to maintain and service detention and retention ponds
Defined the term gray water.
Gray water – wastewater generated from domestic activities such as dishwashing, laundry, and bathing. Great water can compromise 50 to 80% of residential waste water generated from all of the houses sanitation equipment except for the toilets.
Which compounds should not be discharged to directly into the sanitary sewer system?
Phosphates
Refined oils, petroleum, and gasoline organics (grease trap or oil-water separator requires)
Fertilizers
Pool/spa Treatment chemicals
Paints/sealants
Biohazard wastes, blood, pathogenic lab waste
When should oil water separators be used?
Environmental regulations require the use of oil – water separators in areas where there is a risk of petroleum product leakage, such as at gas stations, will refineries, take farms, and fuel – oil delivery services.
They may also be installed were stormwater discharges into environmentally sensitive areas such as fish or waterfall breeding grounds.
Separators are typically located below ground level and are considered confined spaces requiring special training to personal entry for inspection, service, or cleaning
A new suburban community is being developed, and construction is underway on a small neighborhood of single-family homes. In the center of the homes a detention pond was placed for stormwater runoff. How does the detention pond meet regulations for Stormwater management?
A. Allows the pond to temporarily flood, subsequently emptying out any controlled rate to a natural body of water
B. Allows an increased volume of run off to enter the pond while limiting the amount of water leaving the pond to a constant rate
C. Directs stormwater to ground water through permeable soils
D. Redirects stormwater from building foundations to prevent damage
B. Allows an increased volume of runoff to enter the pond while limiting the amount of water leaving the Pond to a constant rate
Due to problems with the pump stations, the municipal sewer system is unable to treat a medical centers waste water. What is the managers responsibility for treating the waste water?
A. To pretreat, filter, treat, and raise the effluent quality of the water for discharge to the receiving environment
B. To engage in a two step aerobic process to remove nitrogen and disinfect the water
C. To undertake treatment of process waste water on site prior to discharge to the sewer system
D. To assume primary and secondary treatment for Eventual disposal or reuse
A. To undertake treatment of process waste water on site prior to discharge to the sewer system
What type of water pollution occurs when rain flows off your property, Downey Street, and into a stream?
A. non point
B. Point source
C. Processed waste water
D. Indirect
A. Nonpoint
What are the sources of water pollution?
Process wastewater-water used in manufacturing process and then disposed of
Stormwater-runoff generates when precipitation from rain or melting snow flows over surfaces and does not percolate on the ground
Point source-discharged at end of pipe
Non point-stormwater flows across surface and into stream or natural body of water
Direct-stormwater or wastewater discharged from facility directly to a natural body of water.
Indirect-stormwater or wastewater discharged from facility indirectly to a natural body of water.
What is the policy and process for detention ponds?
Detention ponds are man-made ponds with an outlet structure designed to let out only a certain amount of water over a given period.
During a storm, the runoff is discharged to a retention pond, which allows an increased volume of water or runoff to enter the pond while limiting the amount of water leaving the pond to a constant rate
A medical office building has doctors offices as well as a physical therapy clinic with hot tubs. Which two compounds will they most likely have to prevent from being discharged into the sanitary sewer system?
A. Refined oil’s, petroleum and paints/sealants
B. Biohazard waste and pool/spa treatment chemicals
C. Phosphates and pool/Spa Treatment chemicals
D. Pesticides and fertilizers
B. Biohazard waste into pool/spa treatment chemicals
Stormwater runoff from a shopping mall roof is collected through a series of gutters and piped into a nearby pond. This is an example of what the stormwater discharge process?
A. Inverse discharge
B. Ancillary discharge
C. Non-Point source discharge
D. Direct point source discharge
D. Direct point source discharge
Wastewater discharge falls into which categories?
Black water-Waste water associated with human waste discharge from fixtures such as toilet, urinals, and be days.
Gray water – wastewater generated from domestic activities such as dishwashing, laundry, and bathing. Great water can compromise 50 to 80% of residential waste water generated from all of the houses sanitation equipment except for the toilets.
Waste water from sinks, dishwashers, and garbage disposals is called:
A. Black water
B. Brown water
C. Gray water.
D. White water
C. Gray water
