Ключевые слова: aerial, basin, biological waste, biotechnology, circle, cleaning, ecology, ecosystem, environmental conservation, facility, factory, garbage, industry, infrastructure, lost water, organic, plant, pollution, production, purification, recycling, renewable, reusing, sewage, sewage treatment plant, sewer, sewerage, station, storage tank, system, treatment, waste, wastewater, wastewater treatment plant, water, water purification, whirlpool,