What is the maximum flow velocity for flash mixers in feet per second?

The maximum flow velocity for flash mixers is critical to ensure effective mixing processes and to prevent issues such as sedimentation or particle separation. The correct range of 5 to 7 feet per second ensures that the mixing action is sufficiently vigorous, allowing for optimal contact between chemicals and water being treated. This velocity facilitates rapid dispersion of coagulants and other additives necessary for effective water treatment, promoting their interaction with suspended solids in the water.

In contrast, lower velocities might be insufficient to achieve the desired mixing, resulting in ineffective treatment, while higher velocities could lead to excessive turbulence, which may disturb settled particles and result in re-suspension. Thus, the selected range of 5 to 7 feet per second strikes an appropriate balance for effective operation of flash mixers in water treatment facilities.