Flocculent precipitate treatment device for chemical engineering wastewater

Abstract

The invention discloses a flocculent precipitate treatment device for chemical engineering wastewater. The device comprises a stirring box. A filter screen divides an inner cavity of the stirring box into a purified water cavity and a precipitate cavity; a drain pipe is connected with the bottom end of the purified water cavity in a running-through manner; a stirring shaft is arranged in the precipitate cavity; a plurality of stirring rods are uniformly arranged on the stirring shaft; the bottom end of the stirring box is fixedly connected to a dirt box; a plurality of supporting legs are uniformly arranged at the bottom end of the stirring box; a motor is arranged on one of the supporting legs; a motor shaft of the motor is fixedly connected to a driving wheel; a flocculant box and a water inlet pipe are arranged on the top end of the precipitate cavity; and a plurality of communicating tubes are connected with the bottom end of the flocculant box in a running-through manner. According to the invention, the arranged stirring shaft stirs sewage to improve the mixing speed of the sewage and the flocculant, and the flocculant is uniformly scattered in the precipitate cavity everywhere through the plurality of communicating tubes, so that the flocculant is uniformly mixed with the sewage, and therefore, impurities in the sewage are fully coagulated to form blocks; the filter screen can effectively filter the coagulated blocks, so that the discharged sewage does not affect follow-up steps.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a chemical wastewater flocculation and sedimentation treatment device. Background technique [0002] Chemical wastewater is the process wastewater, cooling water, waste washing water, equipment and site washing water and other wastewater discharged in chemical production. If the waste water is discharged without treatment, it will cause different properties and different degrees of pollution of the water body, thereby endangering human health and affecting industrial and agricultural production. The treatment of chemical wastewater generally uses physical action to separate and recover insoluble suspended pollutants (including oil film and oil beads) in the wastewater, and is mainly used to remove floating objects, suspended solids, sand and oil in wastewater. Substances are called primary treatment. After primary treatment, wastewater will still contain some fine s...

AI Technical Summary

Problems solved by technology

However, the existing chemical wastewater often has flocs that are easy to disperse during the flocculation and sedimentation treatment stage. After the flocs are precipitated, the chemical wastewater is discharged, and the flocs are easily discharged along with the chemical wastewater, which hinders the subsequent treatment of the chemical wastewater.

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