Waste Water Engineering MCQ - Construction & Planning of Sewer System Part-1

1. Combined sewer systems are no longer installed due to the water pollution problems they present.
a) True
b) False

Answer: a
Explanation: As combined sewer systems carry both sanitary sewage and storm water, they overflow when storm water rate is high during rainy season. This causes water pollution. However, these sewer systems are still used by older cities located primarily in the Northwest, Northeast, and Great Lakes regions.

2. Which of the following factors mentioned below marks essential for planning sewer systems for a community?
a) Usage pattern
b) Terrain
c) Location
d) Wastewater flow

Answer: d
Explanation: Planning is needed when designing sewer networks. Calculating the wastewater flow for the community is the most essential factor. The calculation of wastewater flow shows the size of the sewer to be considered.

3. The abbreviation of SUE is?
a) Subsurface utility engineering
b) Surface utility engineering
c) Storm usage engineering
d) Storm utility engineering

Answer: a
Explanation: SUE stands for subsurface utility engineering. Before SUE, a survey is carried out. It helps contractors locate pipelines and subsurface utilities using a variety of detection tools such as ground penetrating radar and evacuation pipe.

4. Which of these is the most common pipeline installation method?
a) Trench sewer construction
b) Storm sewer construction
c) Pipeline construction
d) Tunnel construction

Answer: a
Explanation: Trench sewer construction is the most common pipeline installation method. At grade level, sewers can be installed and protected by an embankment or a wall, or placed inside tunnel walls.

5. The type of wastewater treatment process for treating wastewater or industrial wastewater using aeration and biological flocs is called?
a) Active sludge process
b) Aeration
c) Biological aeration
d) Anaerobic digestion

Answer: a
Explanation: One of the sewer wastewater treatment processes is a biological treatment known as activated-sludge process. Wastewater is agitated and aerated to remove solids and oxidation methods are introduced to activate decomposition.

6. What is the abbreviation of SSMP?
a) Storm and Sewage Management Plan
b) Sewer System Management Plan
c) Soil and Storm Management Plan
d) Storm System Management Plan

Answer: b
Explanation: SSMP stands for Sewer System Management Plan. This is a document that any agency uses to manage the wastewater collection system effectively. It helps in improving the condition of the collection system infrastructure.

7. For which of the following reason SSMP is not used?
a) Minimizing sanitary sewer overflows
b) Minimizing infiltration/ inflow
c) Reducing sewer size
d) Maintaining the condition of a collection system

Answer: c
Explanation: Sewer System Management plan is mainly used to maintain and improve the condition of the collection system infrastructure in order to provide reliable service for the future. Reducing the size of the sewers may lead to overflow conditions during the periods of high storm.

8. SSMPs are used to minimize the number and impact of sanitary sewer overflows that occur.
a) True
b) False

Answer: a
Explanation: SSMP is a document used to manage wastewater systems effectively. Hence one of the goals of Sewage System Management Plan is to minimize the number and impact of sanitary sewer overflows that occur in few regions.

9. The legal entity that is responsible for the wastewater collection system is called ___________
a) Collection system agency
b) Sewer system agency
c) Water collection agency
d) Storm collection agency

Answer: b
Explanation: The legal entity that is responsible for the wastewater collection system is the Wastewater Collection System Agency. It is also called Sewer System Agency.

10. SORP stands for?
a) Storm Overflow Response Plan
b) Sewer Overflow Response Plan
c) Sanitary Overflow Response Plan
d) Sewage Overflow Response Plan

Answer: b
Explanation: SORP stands for Sewer Overflow Response Plan. It is the fourth revised version posted in the Public Document Repository on May 9, 2011, by Waterworks and sanitary sewer board.