Answer: Oils, paints or any fats should not be poured down drains since they harden the soil and cause them to clog. Fats get stuck in the drain's dirt openings and block them. It prevents the flow of water.
(a) Cleaning of water is a process of removing ____________.
(b) Wastewater released by houses is called ____________.
(c) Dried ____________ is used as manure.
(d) Drains get blocked by ____________ and ____________.
(d) Oils, paints, fats
Answer: Human excreta that is untreated poses a health risk because it contains disease-causing germs and contaminants that pollute the land and water resources from which people draw water for drinking and domestic purposes. Cholera, Typhoid, Dysentry, and Hepatitis are illnesses spread by drinking water polluted with human excrement.
Answer: Sanitation and disease are linked because poor sanitation causes sickness while excellent sanitation practises prevent disease.
Answer: As responsible citizens, we must ensure that our own environmental cleanliness is maintained. People should be made aware of the advantages of sanitation. We should assist local governments in covering any open drains and removing disease-causing material that have been put in them.
Miscellaneous Practice Questions
Answer: The term 'wastewater story' refers to the entire process of collecting wastewater and treating it in wastewater treatment facilities to make it fit for human use.
Answer: Wastewater comprises vegetable waste, pollutants, and other dangerous substances that, when released, damage our natural water supplies. It can potentially cause severe water-borne infections.
Answer: Wastewater is the liquid waste produced by families, companies, and enterprises, and it contains vegetable waste, chemicals, and other potentially dangerous matter.
Answer: Sewage is a phrase used to describe liquid waste generated by families and enterprises that contains vegetable waste, chemicals, and other potentially dangerous things.
Answer: The following are the three most important stages of wastewater treatment:
- Primary treatment
- Secondary treatment
- Final treatment
Answer: Sewage is used water or wastewater emitted by homes, factories, hospitals, workplaces, and other users. It includes harmful chemicals and organisms that jeopardize human life.
Sewage includes a variety of pollutants, including pathogenic bacteria and other microorganisms. If this polluted water is consumed, it can cause diseases such as cholera, typhoid, dysentery, and others, which can lead to death. That is why dumping untreated sewage into rivers or seas is hazardous.
Answer: In wastewater treatment, the wastewater is clarified for further use by going through a number of procedures.
a. To eliminate large particles such as hazardous plastics, bags, clothing, pieces of metal, and so on, wastewater is filtered using bar screens.
b. Water is further filtered using stones, gravel, and sand.
c. The water is then allowed to settle in a big settling tank, where solid excrement known as sludge is scraped away using a scraper.
d. Air is pumped into the cleansed water to aid aerobic bacteria in their growth and waste consumption.
e. This water is then discharged into rivers or ponds.