worker on Wastewater treatment concept. Service engineer on waste water Treatment plant
Keywords
aeration,
biochemistry,
biology,
biotechnology,
chemistry,
clean,
ecology,
effluent,
engineer,
engineering,
environment,
environmental,
environmental protection,
factory,
hard hat,
helmet,
industrial,
industrial plant,
industry,
job,
microbiology,
outdoors,
people,
plant,
pollution,
professional,
protective clothing,
purification,
quality,
quality control,
reusing,
research,
sewage,
sludge,
station,
storage tank,
system,
tank,
technology,
treatment,
waste,
water,
water tank,
water treatment plant,
men at work