Ключевые слова: active, aeration, aerobic, aerotank, bacteria, bacterium, basin, biological, biology, bubble, clean, conservation, ecology, effluent, environment, environmental, facility, filtration, flow, industrial, industry, modern, night, plant, pneumatic, pollution, pool, processing, purification, purity, recycle, recycled, recycling, reservoir, sanitary, sedimentation, sewage, sewer, sewerage, sludge, steel, storage, suspended, system, tank, technology, treatment, waste, wastewater, water,