what difference between primary and secondary treatment of water..
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Answer:
PRIMARY TREATMENT....
Primary wastewater treatment is the process of removing solid matter from wastewater. The wastewater flows into tanks and the solids settle on the bottom and require retention time. The grease and scum then rise to the top. This is a very slow process. The primary process is also called the ‘primary phase’ or the ‘septic process’. The lighter wastewater and matter then leave and go to the secondary pre-treatment chamber. The anaerobic bacteria (bacteria that does not need oxygen to live) uses the nasties in the water as food and they begin to break them down.
SECONDARY TREATMENT...
The secondary wastewater treatment process uses anaerobic microorganisms and retention time to breakdown and remove the remaining waste and other small particles. The waste and the microorganisms are both found in the sludge, and remove both the remaining solids and nutrients through bacterial composition. Secondary treatment utilises naturally occurring biological processes