Question

An ideal pollutant is characterized by

• A. N/P ratio
• B. C/N ratio
• C. C/P ratio
• D. N/K ratio

Hint:

For aerobic wastewater treatment (biological digestion), a C:N:P ratio of approximately 100:5:1 is considered ideal to prevent nutrient limitation.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Biodegradability and biochemical characteristics of organic pollutants in wastewater are analyzed using stoichiometry and nutrient ratios.

Step 2: Detailed Explanation:
In environmental engineering and aquatic pollution studies, organic wastes (pollutants) are characterized by their Carbon-to-Nitrogen (C/N) ratio.
The C/N ratio dictates how easily and rapidly bacteria can decompose the organic material.
An ideal, easily biodegradable organic pollutant typically has an optimal C/N ratio that supports active microbial digestion and wastewater stabilization without limiting nutrients.

Step 3: Final Answer:
The parameter is the C/N ratio, corresponding to option (B).