an engineer stand aside at the waste water pool and check the list on clipboard to make sure that the gauge at standard value, waste water treatment
Keywords
analysis,
biochemistry,
biology,
biotechnology,
check,
clean,
development,
ecology,
engineer,
environmental,
examining,
factory,
hard hat,
industry,
inspector,
laptop,
maintenance,
male,
manufacturing,
measurement,
mechanical,
microbiology,
occupation,
outdoors,
pipe,
pipeline,
plumbing,
pollution,
professional,
pump,
purity,
quality,
quality control,
research,
reusing,
safety,
sewage,
sludge,
station,
storage tank,
system,
tank,
technician,
technology,
treatment,
uniform,
waste,
water,
water tank