Biological water treatment plant with a round settlers
Keywords
ecology,
treatment,
sewage,
plant,
water,
big,
storage,
tank,
industry,
purity,
concrete,
unhygienic,
factory,
cleaning,
group,
biology,
organism,
pollution,
biomass,
aerated,
steel,
conservation,
recycling,
slimy,
sludge,
bionomics,
purified,
site,
construction,
rust-eaten,
environmental,
circle,
clean,
activated,
environment,
effluent,
cement,
purification,
tower,
dirty,
clear,
engineering,
frame,
recycled,
chemical,
pool,
basin,
area