Listening Quiz: Xử Lý Nước Thải Cho Quy Trình Nhuộm Hoạt Tính – Advanced Level

1. What is the main topic of the conversation?
2. According to Sophia, what is the first treatment step needed for the wastewater?
3. Which chemical treatment does Sophia say is better for reactive dyes?
4. What can be inferred about biological treatment in this case?
5. Which parameters should be monitored in the treatment system?

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