Wide aerial of water purification circle, clean drinking water. Ecosystem of filtration, fresh water and water management. Sewage treatment plant in the sun

Keywords: aerial circle dirty distribution drinking water ecology ecosystem electric energy engine environment environmental facility factory farm filtration flow fresh water freshwater hydraulic industrial industry oxygen plant pollution pump purification purified recycle recycling reservoir round sewage sewage system sewage treatment plant sewer sludge supply system tanks technology treatment turbine urban waste wastewater water infrastructure water management