Ключевые слова: above, aerial, aerial photography, architecture, city, clean, drone, engineering, environment, environmental, environmental protection, filtration, green, green water, industrial, industrial plant, industry, infrastructure, landscape, plant, pollution, pollution control, process, purification, resource management, sewage, sewage treatment, sustainability, sustainable, system, tank, tanks, technology, top view, treatment, urban, view, wastewater, wastewater treatment, water, water filtration, water management, water purification, water treatment plant,