What end products are obtained from the anaerobic digestion of sewage sludge?

What end products are obtained from the anaerobic digestion of sewage sludge?

• A. Cyanide and carbon dioxide
• B. Clean water and gas
• C. Solid waste only
• D. Metals and minerals

Answer: (B)

The end products obtained from anaerobic digestion of sewage sludge primarily include clean water and biogas. In anaerobic conditions, microorganisms decompose organic material in sewage. This process leads to the breakdown of complex organic compounds into simpler substances. The biogas produced during this process typically consists of methane, carbon dioxide, and other trace gases, while the remaining solid materials are transformed into biosolids that can be further processed or used as fertilizer. The production of clean water is significant, as the anaerobic digestion process not only helps in reducing the volume of sewage sludge but also in treating wastewater, making it safer for discharge into the environment or for further reuse. The gas produced can be harnessed for energy, making this an effective and sustainable method of managing sewage waste.

The end products obtained from anaerobic digestion of sewage sludge primarily include clean water and biogas. In anaerobic conditions, microorganisms decompose organic material in sewage. This process leads to the breakdown of complex organic compounds into simpler substances. The biogas produced during this process typically consists of methane, carbon dioxide, and other trace gases, while the remaining solid materials are transformed into biosolids that can be further processed or used as fertilizer.

The production of clean water is significant, as the anaerobic digestion process not only helps in reducing the volume of sewage sludge but also in treating wastewater, making it safer for discharge into the environment or for further reuse. The gas produced can be harnessed for energy, making this an effective and sustainable method of managing sewage waste.