service engineer checking on waste water treatment plant with pump on background. worker working on Waste water plant.
Palabras clave
manufacturing,
equipment,
control,
hard hat,
construction,
work,
aeration,
biochemistry,
biology,
chemistry,
clean,
ecology,
effluent,
engineer,
engineering,
environment,
environmental,
factory,
hard hat,
helmet,
industrial,
industrial plant,
industry,
job,
microbiology,
outdoors,
people,
plant,
pollution,
professional,
protective clothing,
purification,
quality,
reusing,
research,
sewage,
sludge,
station,
storage tank,
system,
tank,
technology,
treatment,
waste,
water,
water tank
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