A sewage advanced defluoridation system

Abstract

The utility model provides a kind of sewage depth defluorination system, it is related to sewage treatment field, including inlet pipe, outlet pipe, alkalinity adjusting mechanism, sewage treatment mechanism and control panel, the one end of inlet pipe is communicated with alkalinity adjusting mechanism, the alkalinity adjusting mechanism is communicated with sewage treatment mechanism, the sewage treatment mechanism is communicated with outlet pipe, water quantity monitor is equipped on inlet pipe, water quantity monitor is electrically connected with control panel;The utility model is through the control of total alkalinity and the alkalinity supplement of weak acid salt, maintains defluorination system pH stable, both can avoid high pH condition, the defluorination efficiency drop caused by the rapid hydrolysis settlement of defluorination agent (aluminum salt), also avoided the difficulty removal of large amounts of aluminum fluoride polymer formed when pH drops in the hydrolysis process of aluminum salt when adding defluorination agent under neutral condition, to reduce the residue of fluorine and aluminum in effluent.

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