Question

What are the 4 steps of water treatment sewage aeration?

Answer 1

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Step 1 – Sludge Thickening

The first step in the sewage sludge treatment plan is called thickening.

Step 2 – Sludge Digestion

After amassing all the solids from the sewage sludge begins the sludge digestion process.

Step 3 – Dewatering  

After retrieving useful gases and other byproducts, the remaining sludge is then dewatered before final disposal. In most cases, dewatered sludge usually contains a significant amount of water, as much as 70 percent, in spite of its solidified state.

Step 4 – Disposal

Once the sludge has been effectively dewatered, it can be buried underground in a sanitary landfill or can be used as a fertilizer, depending on its chemical composition. In cases where the sludge is too toxic to be reused or buried, you can simply incinerate the sludge and convert it into ash.

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