List two important measures that textile manufacturing units can adopt to reduce air pollution caused by their processes.
Answer
1) Installation of electrostatic precipitators or bag filters to capture particulate matter; 2) Use of low‑sulphur dyes and implementation of closed‑loop ventilation systems to minimise gaseous emissions.
Step-by-step solution
- Identify the major sources of air pollution in textile units (e.g., dust from fibre processing and gases from dyeing).
- Suggest a device that removes suspended particles – electrostatic precipitators or bag filters – and explain why it works.
- Recommend a change in raw inputs – low‑sulphur dyes – to cut down gaseous pollutants.
- Add a process improvement – closed‑loop ventilation – to prevent release of pollutants into the atmosphere.
- Present the two measures clearly as the final answer.
Common mistake: Mentioning water‑treatment methods instead of air‑pollution measures.
Concept tested: Air‑pollution control in textiles
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