aerial view to pumps of air pumping station of wastewater treatment plant

air background building centrifugal chemical chemistry chiller clean condenser conditioning construction control cool cooling distribution drain energy engineering equipment facility factory filter filtration flow heat heavy industrial industry infrastructure installation iron line machine machinery manufacturing mechanical metal pimping pipe pipeline piping plant pollution power pressure production pump purification purity recycle recycling reduce refinery removal room sanitary sanitation sewage sewer smell station steel supply system tank technology temperature tool tower treatment tube valve wastewater water work