Explore the technical parameters and characteristics of the small hole grid reaction tank together
The technology of small hole grid reactor has theoretically studied the dynamics of coagulation from the scale of turbulence microstructure, namely submicroscopic scale, and proposed that the cause of flocculation kinetics is "inertial effect", and turbulence shear force is the decisive kinetic factor in flocculation reaction. Based on this, the kinetic similarity criterion of flocculation has been established. This technology scientifically arranges multi-layer eyelet grids on the flow channel of the flocculation tank.
The speed of water flowing through the grid will change dramatically, the probability of particle collision will increase, the scale of turbulent vortex will be greatly reduced, the proportion of micro vortex will be enhanced, and the centrifugal inertial effect of vortex will increase, further strengthening the number of particle collisions; At the same time, due to the inertial action of the water flowing through the network, the alum flowers produce strong deformation, making the alum flowers in the part with low adsorption energy level.
Because of its deformation and kneading effect reaching the high absorption level, the alum flowers become more dense and easy to precipitate after passing through the grid; At the same time, it provides hydraulic conditions for the re aggregation of some broken alum flowers in the flow process, and reasonable grid layout can reduce the impact of low temperature and high turbidity. The grid is arranged in sections throughout the reaction tank to make alum particles from small to large, from loose to dense, which greatly shortens the reaction time.
Generally, flocculation can be completed within 5-10min. Prepare for the next precipitation separation. Compared with the ordinary flocculation tank, the small hole grid reaction tank has the following advantages: the proportion of turbulent micro vortex is greatly increased in the flocculation tank, the number of particle collisions is greatly increased, and the flocculation effect is effectively improved. Generally, the flocculation process can be completed in 5-10 minutes, and the reaction time is greatly shortened compared with the flocculation time of the clapboard reaction tank, folded plate reaction tank and ordinary grid reaction tank, which are 20-30 minutes and 10-15 minutes respectively.