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Statistics for Texas Basic Waste Water Operations Ch#04 Domestic Waste Pretreatment

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General Stats

This quiz has been taken 4 times
The average score is 12 of 19

Answer Stats

Question	Answer	% Correct
Some pretreatment processes include ________.	all of the above	100%
While the TCEQ does not have specific pretreatment standards, ________ provides specific pretreatment standards.	EPA	100%
Food processing discharges large amounts of ________ material into the wastewater system.	organic	100%
Pesticides and herbicides used by the agricultural industry can be ________ to the treatment plant biological system.	toxic	100%
Flows from domestic sources average about 100 gallons/day per person.	True	100%
Inflow is stormwater that enters a collection system through openings such as house wastewater line cleanouts or open manholes.	True	100%
Infiltration is stormwater that enters the collection system through broken pipe joints, manhole walls, and cracked pipe.	True	100%
I & I results in bypassing, plant washout, poor treatment, and permit violations.	True	100%
Sources of wastewater include domestic, I & I, food processing, agricultural operations, and industrial operations.	True	100%
Restricted discharges include those that ________.	all of the above	50%
Domestic waste is uniform in content.	False	50%
Some industries that may contribute a shock load to the treatment plant are refineries, paper mills, and ________.	metal platers	50%
EPA requires some industries to pretreat waste before discharge to a ________.	POTW	50%
I & I floods the collection system, creating flow 5–10 times higher than the daily average.	True	50%
Some wastes cannot be treated in a domestic wastewater treatment plant because the waste would harm the biological process or contaminate the waste sludge.	True	50%
________ results in the rapid die-off of treatment organisms.	Acute toxicity	0%
By weight, domestic wastewater is about 99.9% water and 1% solids.	False	0%
Federal regulations require cities to have an industrial waste control program when ________.	. flow exceeds 5 MGD and industrial waste is regulated by federal standards	0%
The most important problem prevented by monitoring or restricting industrial waste is ________.	worker exposure	0%

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