An electrostatic sand-fixing sand-water separation device for metal wastewater

Abstract

The invention discloses an electrostatic sand fixation and sand-water separation device for metal wastewater. The structure of the device comprises a water inlet pipeline, a water tank, an electrostatic screw mechanism, a driving motor, an overflow box and a circulation pump chamber, the water inlet pipeline is embedded in the upper surface of the water tank, the electrostatic screw mechanism is embedded in the water tank, and the electrostatic screw mechanism is connected with the driving motor in a rotating manner. The driving motor drives a mounting rotating shaft to rotate together with ascrew rod sleeve in order to make an N pole magnet and an S pole magnet rotate and form a rotating magnetic field, the magnetic induction line is cut by a fixed cutting member to generate an induced current, the electrostatic induction phenomenon is used to make the outer surface of the screw rod sleeve attached to a metal cover cylinder generate an electrostatic force to adsorb sandstones in order to prevent the sandstone from falling into a gap between the screw rod sleeve and an outer sleeve shell and aggravating the wearing of the screw rod sleeve, and excess water flow goes through a water discharging trench and returns into the water tank through a water-permeable pad and hydrophobic noise reduction to prevent the water flow from flowing down the surface of the screw rod sleeve and driving the sandstones to slide down.

Description

technical field [0001] The invention relates to the field of waste water treatment, more specifically, an electrostatic sand-fixing sand-water separation device for metal waste water. Background technique [0002] Due to the rapid development of modern industrial technology, the pollution of the metal waste water produced is becoming more and more serious to the environment. Therefore, the metal waste water must be filtered and purified for recycling. When the waste water enters the grit chamber, the sand-water mixture must be separated first. To provide convenience for the subsequent treatment of wastewater, most of the current sand-water separators use motors to drive the screw to rotate and transport sand and gravel to separate them from wastewater. The existing traditional technology is not comprehensive and has the following disadvantages: [0003] The sand rises under the action of the screw rod, and at the same time, the excess water flows down along the surface of th...

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Problems solved by technology

[0003] The sand rises under the action of the screw rod, and at the same time, the excess water flows down along the surface of the screw rod due to the action of gravity, and the sand becomes dry after being separated from the water flow, and the adhesion between the sand and stone is relatively reduced, while Under the gravity and tension of the sand and stone itself, it is easy to fall and enter between the screw rod and the outer shell, increasing the frictional resistance and causing the screw rod to wear. Sliding down, reducing the efficiency of the screw conveying sand and gravel

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