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An engineer controlling the quality of water , aerated activated sludge tank at a waste water treatment plant .Copy space
Environment engineers sample and test toxic wastewater from factories, environment control in the industrial estate
Water analysis operator wearing PPE sample and audit water from the water treatment plant, industrial and environment concept
Two specialists taking water samples at a sewage treatment plant. Water management concept.
Worker monitor filtering industrial water, he adjust some pump.
Examination of Polluted Water from river
Environmental Engineers Team Take Water Samples at Natural Water Sources. Water that smells bad Near Farmland, Fish Ponds May Be Contaminated by Toxic Suspicious Pollution Sites.
A female engineer works in a chemical plant using a laptop computer
An engineer controlling the quality of water , aerated activated sludge tank at a waste water treatment plant
Biologists and wastewater treatment experts Conduct water quality simulation experiments. at the wastewater treatment plant
Scientists biologists or researchers in protective suits taking water samples from wastewater from industries. Experts analyze the water in a contaminated environment.
Service engineer checking on waste water treatment plant.
A Scientist analyze the water of a river.
Collect samples of wastewater from industrial canals in test tubes to be examined in the laboratory
The man bent over the water well and records the readings of the water meter. Checking and fixing the counter.
Iowa's first trout hatchery located in Backbone State Park, Iowa, USA. Closed in 1987. Photographed in 1967.
An engineer controlling the quality of water , aerated activated sludge tank at a waste water treatment plant .Copy space
Biologists and wastewater treatment experts Conduct water quality simulation experiments. at the wastewater treatment plant
Young female engineer check water pump and water treatment system, industrial and factory concept
Environmental inspector in white safety suit examining polluted river water at industrial site
Vertical high angle view of senior male ecologist wearing safety vest with gloves taking river water sample
Adult men wearing protective workwear and analyzing sewage water.
Ecologist man examines wastewater with pH test results discharged from sewers of refineries into nature to prevent chemical contamination and biohazard. Pollution and toxic problem environment.
Environmental Engineers Check the Control System at the Water Treatment Plant.
Shot of an unrecognizable ecologist standing where sewage waste water meets the river and taking samples to determine level of contamination and pollution.
Close-up scientist or environment engineer's hand with a chemical protective suit and PPE collect a sample of toxic wastewater from a chemical flask from an industrial
Male Biologist or natural science check drain water from factory ,Water environment pollution problem concept
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Female Scientist Biologist Examining Possibly Oil Polluted Water Sample from Close Distance
Mature woman collected river water sample for analysis in a test tube and recorded the experimental results in the tablet. Environmental research.
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