Question

1. Number the following processes in the correct order to show how wastewater is treated in sewage treatment plants:-

Sedimentation of waste from sewage

Chemical treatment.

Decomposition of organic matter.

Removal of large solid waste from sewage.

Separation of sediments​

Answer 1

Answer:

There are three basic biological treatment methods: the trickling filter, the activated sludge process, and the oxidation pond. A fourth, less common method is the rotating biological contacter.

Explanation:

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