mad cow

the most common type of pond in current use is?

secondary clarifier has a billowing homogenuos sludge throughout the tank. 30-min. settling test is good. probable cause?

filamentous bulking is occuring and the occurring and the organism is thirothrix . what is the best curative methos you should choose?

in a contact stabilization process, the purpose os stabiliozation tank is to?

T or F- under oxidized mixed liquor usually has a large strong floc.

major cause of repeated bulking is?

pin floc. is it associated with young or old sludge?

T or F- gas bubbles from septic conditions are usually larger than than gas bubbles from denitrification.

T or F- typical aeration D.O in a sludge process is about 1.0 to 3.0 PPM

mixed liquor becomes very dark, shiny scum is forming on the surface. the secondary clarifier is losing solids over the weirs at sporadic periods. what visual observation and test results would you expect?

you have poor settling with a high SVI of 700, heavy compaction: your effluent is deteriorating with pin floc, what is the cause?

what PPM will chlorine kill? what PPM will be least detectable by volume?

what type of pond is used afetr a trickling filter, RBC and activated plant?

secondary clarifier has billowing homogenuos sludge throughout the tank. 30-min. settleability test is good f/m is good. probable cause?

you have floating sludge in your secondary clarifier/ what would be a probable cause?

if a rotometer and chlorinator malfunctions, what should be done?

F.A.C. states that a onthly report must be turned in by?

what would be the best solutions if you have young sludge and staggler in the effluent?

problem: sludge clumps are rising to the surface of the primary clarifier. D.O. is dropping excessively across the clarifier. influent BOD is 150 PPM: influent SS is 165 PPM, what could possibly be the problem?

__________ may result in the breakup of the MLSS floc particles , which will appear on the surface of the secondary clarifier. settling will be poor and operating cost will increase.