Device for reactive recovery of polyvinyl alcohol in wastewater

Abstract

The invention discloses a device for reactive recovery of polyvinyl alcohol in wastewater. The device comprises a box body, a motor and symmetrically arranged hydraulic rods, wherein the motor is fixedly connected to the outer side wall of the box body; the upper end parts of the hydraulic rods are rotatably connected to the lower surface of a bottom plate of the box body; the inner side wall of the box body is divided into a stirring chamber and a filtering chamber from top to bottom by an arc-shaped plate; a stirring rod is horizontally arranged in the stirring chamber; one end of the stirring rod penetrates through the side wall of the box body and is fixedly connected with an output shaft of the motor; the top of the stirring chamber is communicated with feeding pipelines which are symmetrically arranged; and a through hole is formed in the bottom of the stirring chamber. According to the invention, the device can prevent a solution from forming a vortex during stirring, improves the mixing efficiency of a variety of solutions, allows a stirred solution to automatically flow into the filtering chamber for filtration treatment, saves manpower and time, brings convenience to thestaff, and enhances reactive recovery efficiency of polyvinyl alcohol in wastewater to a certain extent.

Description

technical field [0001] The invention relates to the technical field of waste water treatment equipment, in particular to a reaction recovery device for polyvinyl alcohol in waste water. Background technique [0002] Polyvinyl alcohol (PVA) wastewater is wastewater generated during the desizing process in the printing and dyeing industry. It has a high concentration of organic matter and is difficult to biodegrade, causing enormous pressure on the environment. Treatment of PVA wastewater requires large investment and high operating costs, and by-products will be produced to cause secondary pollution. Because PVA has the characteristics of excellent serosity, adhesion, wear resistance and easy compatibility with other sizing materials, it is widely used as a sizing material in textile, papermaking, chemical industry and other industries, so the recovery of PVA from wastewater is of great importance in solving While solving environmental problems, the recycling of PVA is reali...

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Problems solved by technology

[0004] Although the polyvinyl alcohol reaction recovery device in this kind of waste water utilizes gravity diversion to reduce energy consumption, the stirring device in the polyvinyl alcohol reaction recovery device in this kind of waste water is vertically arranged, when the stirring rod in the stirring device is for the reaction When the mixed solution in the tank is stirred, it is easy to make the mixed solution form a vortex in the reaction tank, so that part of the solution rotates in a certain trajectory, which reduces the mixing efficiency of various solutions, and the polyvinyl alcohol reaction recovery device in this kind of wastewater It is difficult to filter the particulate matter in the mixed solution, which brings inconvenience to the staff. Therefore, we propose a polyvinyl alcohol reaction recovery device in wastewater to solve the above problems

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