Abstract
In this work, the technological parameters that can significantly effect on a quality of clarification low-concentration suspension by dissolved air flotation were considered. These parameters are: particle size, air bubble size, water rise velocity and air concentration in water. The size of solid particles influences on the probability of their collision with bubbles. The water rises velocity change time of contact between solid particles and bubbles in the working area, which also effects on the probability. Increasing the air concentration in a tank improves the quality of water clarification, because more bubbles are formed there. These factors will be taken into account in further studies to find the optimal dimensions of flotation tank for better cleaning low-concentration suspension.
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