A worker in protective gear carefully inspects a large water treatment plant
Palabras clave
medicals,
computer,
water,
man,
technology,
construction,
sewage,
men at work,
microbiology,
ecology,
tank,
plant,
engineer,
helmet,
outdoors,
system,
quality control,
water treatment plant,
engineering,
storage tank,
industry,
factory,
people,
waste,
treatment,
quality,
protective clothing,
sludge,
hard hat,
research,
reusing,
effluent,
working,
sanitation,
reservoir,
steel,
purity,
city,
industrial plant,
chemistry,
sanitary,
industrial,
pipe,
biochemistry,
environmental,
water tank
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