school science day model projects wastewater treatment plant ☘️ #science #project

my name is studying scho SEC science project name is Waste Water treatment this is factory factory use this water and chemicals are there in this water we on the DC motor pump big Stones small small stones charcoal sand artificial cotton there is purified tank and Supply the homes and apartment Supply the water from the pipes homes and apartment reuse the water in home and apartment thank you

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