Test: Wastewater Management - Class 7 MCQ

Wastewater is any water that is no longer needed or suitable for its original purpose and is discharged from homes, businesses, industries, or other sources.

Wastewater can contain a variety of contaminants, including chemicals, fecal matter, bacteria, viruses, and other pathogens.

Eutrophication is a natural process that occurs when excessive nutrients, such as nitrogen and phosphorus, are introduced into a body of water, leading to an overgrowth of algae and other aquatic plants. This can deplete the oxygen in the water and harm fish and other aquatic life.

The sewer system is a network of pipes, pumps, and other infrastructure that collects and transports wastewater from homes, businesses, and other sources to a treatment plant.

Primary treatment is the first stage of wastewater treatment, in which large objects and debris are removed from the wastewater.

Secondary treatment is the second stage of wastewater treatment, in which microorganisms are used to break down organic matter in the wastewater.

Tertiary treatment is the final stage of wastewater treatment, in which remaining contaminants are removed from the wastewater using additional treatment methods such as chemical treatment, filtration, and disinfection.

Sewage generation can be controlled by reducing water usage, using water-efficient appliances, and repairing leaks to prevent water wastage.

The Green Corner is an area in the community for promoting environmental awareness and encouraging sustainable practices.

Alternative methods of sewage disposal include composting toilets, wetlands treatment systems, and greywater reuse systems.

Improper sewage management can lead to contamination of water sources, spread of diseases, and environmental degradation.

Sanitation is important in public places to prevent the spread of diseases and maintain public health.

The purpose of a wastewater treatment plant is to remove contaminants from wastewater and make it safe to discharge back into the environment.

Quaternary treatment is not a stage of wastewater treatment.

Microorganisms are used in secondary treatment to break down organic matter in wastewater.

Primary treatment is the first stage of wastewater treatment, in which large objects and debris are removed from the wastewater. Secondary treatment is the second stage of wastewater treatment, in which microorganisms are used to break down organic matter in the wastewater.

Disinfection is the process of killing pathogens in wastewater to make it safe for discharge back into the environment.

Filtration is used in tertiary treatment to remove remaining contaminants from the wastewater.

The Green Corner is an area in the community for promoting environmental awareness and encouraging sustainable practices.

Alternative methods of sewage disposal can result in reduced water usage, reduced environmental impact, and improved public health.