Deep aerated water tanks are dangerous primarily due to the presence of micro-gas-bubbles and the properties of the sludge. These bubbles can reduce buoyancy, making it significantly harder for individuals, including proficient swimmers, to remain afloat[1]. The aeration process creates a situation where sludge becomes lighter than water, leading to the misconception that one can walk on it. If someone steps into the sludge, they risk sinking as it can feel like 'swimming in air'[2]. Additionally, the treatment of wastewater poses health risks, necessitating immediate decontamination through emergency showers[1]. The unpredictable buoyancy and harmful contaminants present make deep aerated tanks potentially lethal environments[2].
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