Which is not a control measure to reduce particulate matter in environment?

Options

A. Cyclonic separators
B. Scrubbers
C. Effluent treatment
D. Electrostatic precipitator

Answer

To determine which option is not a control measure to reduce particulate matter in the environment, we can analyze each option provided.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are:
- A) Cyclonic separator
- B) Scrubbers
- C) Effluent treatment
- D) Electrostatic precipitator

2. **Analyze Each Option**:
- **Cyclonic Separator**: This device is used to separate particulate matter from air or liquid streams. It operates without the use of filter paper and effectively removes dust and other particles. Therefore, it is a control measure for reducing particulate matter.

- **Scrubbers**: Scrubbers are devices that use liquid to remove particulate matter and pollutants from gases. They are effective in capturing particulate matter and thus serve as a control measure for reducing particulate matter.

- **Effluent Treatment**: Effluent treatment refers to the process of treating wastewater (like sewage) to remove contaminants. This process primarily focuses on liquid waste and does not specifically target particulate matter in the air. Therefore, it does not serve as a control measure for reducing particulate matter.

- **Electrostatic Precipitator**: This is a filterless device that uses electrostatic charges to remove dust and smoke from flowing gases. It is effective in reducing particulate matter from the air.

3. **Conclusion**: Based on the analysis, the option that does not serve as a control measure to reduce particulate matter in the environment is **C) Effluent treatment**.

### Final Answer:
C) Effluent treatment

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