Waste liquid recovery device and waste liquid recovery method thereof

Abstract

The invention provides a waste liquid recovery device and a waste liquid recovery method thereof. The waste liquid recovery device comprises an intermediate tank for collecting wastewater, a sedimentation tank for precipitating the wastewater, a wastewater tank for collecting clean water and a recovery barrel for collecting waste residues, wherein the sedimentation tank includes a first sedimentation tank body and a second sedimentation tank body which do not communicate with each other, the intermediate tank separately communicates with the first sedimentation tank body and the second sedimentation tank body, and the first sedimentation tank body and the second sedimentation tank body separately communicate with the wastewater tank and the recovery barrel; the wastewater tank does not communicate with the recovery barrel, and automatic switching and operation are performed on the two sedimentation tank bodies. The design of the double sedimentation tank bodies is adopted, switching between the two sedimentation tank bodies can be achieved through an electromagnetic valve and the principle of an interlock circuit, and precipitation of solid suspended matter in the waste liquid is accelerated through addition of a precipitant, so that the purpose of isolation of abrasive powder and water in the waste liquid is achieved; then the clean water is discharged into a general drainagetank, and is discharged into a wastewater treatment center through pressurization; and the waste residues are collected, and the collected waste residues are sent to the wastewater center for treatment, so that blockage of pipelines is avoided.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal fixtures, and in particular relates to a waste liquid recovery device and a waste liquid recovery method thereof. technical background [0002] Wastewater treatment and recovery devices are widely used in new semiconductor displays and semiconductor industries, such as grinding and polishing, etching and so on. If the appearance of the LCD panel is poor, such as surface scratches, dents, etc., it will be corrected by grinding, and there will be a problem of wastewater treatment of the grinding liquid. Generally, there is a certain distance between the factory wastewater treatment center and the grinding site. After conventional grinding, the waste liquid will be directly discharged and accumulated in the pipeline. move. At present, they are pumped to the factory wastewater treatment center under pressure, or a graded sedimentation device is installed on site. Due to the closed pipeline, ...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the present invention proposes a waste liquid recovery device and its waste liquid recovery method, which can effectively solve the problem of pipelines blocked by suspended solids, and solve the time-consuming and land-occupied problem of ordinary grading sedimentation by designing the automatic switching of double tanks. Problems such as large area and low efficiency

Images