Exam (elaborations)
Wastewater Practice Exam Questions And Answers 2022/2023
- Course
- Institution
Wastewater Practice Exam Questions And Answers 2022/2023
[Show more]
Content preview
Wastewater Practice Exam Questions And Answers 2022/2023 Odors occur when treatment becomes Correct Answer: Anaerobic What should an operator do before entering a manhole Correct Answer: Test for all hazardous gases and oxygen levels and ventilate the manhole before entering What treatment devices is commonly used to separate and remove large solids from raw wastewater C orrect Answer: a mechanically raked bar screen What diseases are caused by pathogenic organisms that may be present in raw wastewater? Correct Answer: Hepatitis, typhoid, paratyphoid, dysentery, and cholera What is typically used to dewater sludge? Corre ct Answer: Belt press, Drying beds, solid bowl centrifuge, and gravity thickener Calculated the volume in gallons of a rectangular aeration tank that is 60 feet long, 30 feet wide and 20 feet deep Correct Answer: 269,280 What is typically used whenever w astewater cannot flow to the treatment plant by gravity Correct Answer: Lift station A centrifugal pump must be ? or it will not pump Correct Answer: Primed One common type of weir design for measuring flow is Correct Answer: V -Knotch The operator would need to increase or decrease if the ? loading on the plant is high Correct Answer: increase/Organic A simple method for indication when to waste sludge is Correct Answer: Total sedimentation test Landfill applied sludge must have a solids content of at least ? Correct Answer: 20% Effluent dosage of chlorine in the contact chamber must produce a total combined residual of ? Correct Answer: 1.0mg/L after 20 minutes TCEQ allows the reuse of wastewater, some of these uses include Correct Answer: irrigation , aquifer recharge, cooling towers and fire protection Organic solids include Correct Answer: organic materials from plant, animals or humans Dangerous gases are produced during bacterial decomposition of organics in wastewater. The main gases are Correc t Answer: Hydrogen sulfide, carbon dioxide and methane The majority of Dissolved Oxygen in raw sewage come from Correct Answer: Potable drinking water Approximately How many pounds does each person contribute of BOD to the system daily Correct Answer: 0.17 If the operator of a system received a call that a lift station is production of a strong smell of "Rotten eggs" this would b e an indication that Cor rect Answer: Hydrogen sulfide gas is presentThe benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Nipsey. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
62890 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now