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UDC 628.334.2

Meshengisser Yu. M., Shchetinin A. I., Marchenko Yu. G., Zinchenko D. B.

Designing the aeration system of grit chambers

Summary

The procedure of designing the aeration system for grit chambers including energy relations and formulas for calculating the diameter and rate of air bubbles ascent is presented. The suggested relationships showed close agreement of calculated and experimental values of the transverse water circulation rate in the aerated grit chamber. On the basis of domestic and foreign recommendations on the given design procedure the bottom velocity of water circulating flow in typical aerated grit chambers was calculated. It was shown that the use of fine bubble aerators provides for 30–50% air saving.

Key words

air flow rate , grit chamber , aeration system , flow bottom velocity

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