Microbes are sometimes used in secondary treatment of wastewater to
A) convert heavy metals into carbon dioxide.
B) remove organic matter.
C) remove large particles.
D) convert heavy metals into carbon dioxide, remove organic matter, and remove large particles.

Question

Quizplus · Accepted Answer

Microbes, specifically bacteria, are often used in secondary treatment of wastewater to remove organic matter through a process called biological oxidation. This helps to break down potentially harmful pollutants and make the water safer for disposal or reuse. While some microbes may be capable of converting heavy metals into less harmful compounds, this is not typically the primary role of microbes in secondary wastewater treatment. Removal of large particles, such as debris or solid waste, is typically handled through physical or mechanical methods rather than the use of microbes. Therefore, the best choice is B - removal of organic matter.

Microbes Are Sometimes Used in Secondary Treatment of Wastewater to