Ключевые слова: aerial view, blue, circular economy, clean water, cleaning, ecology, engineering, environment, environmental protection, filtration, green, industrial, infrastructure, innovation, nobody, outdoors, plant, pollution control, purification, recycling, resource management, round, sanitation, sedimentation, sewage, sewage treatment, summer, sunny, sustainable, sustainable development, tanks, technology, top view, treatment, waste management, wastewater, wastewater treatment plant, water, water management, water purification, water supply,