CAN SOMEONE ANSWER ALL OF THESE QUESTIONS PLEASE: Q1: Name three systems for treating sewage before its flows out into water ways? Q2: which of these systems do you think are the most useful and why? Q3: Which kind of sewage treatment turns sewage into useful gas? Q4: What kind of sewage treatment produces water that is safe for irrigation? Q5: What are the advantages of biogas plants?
Answers
Answer:
Ans 1) There are three main stages of the wastewater treatment process, aptly known as primary, secondary and tertiary water treatment. In some applications, more advanced treatment is required, known as quaternary water treatment.
Ans2) Four common ways to treat wastewater include physical water treatment, biological water treatment, chemical treatment, and sludge treatment. Let us learn about these processes in detail. In this stage, physical methods are used for cleaning the wastewater.
Ans3) Whilst effectively treating the sewage, anaerobic digestion generates a high grade of gaseous fuel – sewage gas. The methane produced can be utilised for generating electricity – renewable energy – through a biogas engine thereby making the sewage treatment plant meet its electricity requirements.
Ans4) Treated sewage water can be used for irri- gation, industry, recharge of ground water and, in special cases, properly treated wastewater can be used for municipal sup- ply. With careful planning various industri- al and agricultural demands may be met by purified water thereby freeing fresh water for municipal use.
Ans5)Biogas plants significantly curb the greenhouse effect: the plants lower methane emissions by capturing this harmful gas and using it as fuel. Biogas generation helps cut reliance on the use of fossil fuels, such as oil and coal.
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