Physicochemical treatment system for waste emulsion and treatment process thereof

Abstract

A physicochemical treatment system for waste emulsion comprises a filter, a demulsification-air flotation combined device, a catalytic oxidation reactor, a precipitation tank, a filter press and a filtrate observation pool, wherein the front end of the filter is connected with a waste emulsion storage tank, and the rear end of the filter is connected with the demulsification-air flotation device through a waste liquid pipe I; the interior of the demulsification-air flotation combined device is divided into a demulsification area, an air flotation area, a scum area and a clear liquid area through a partition plate I, a partition plate II and a partition plate III, the front end of the catalytic oxidation reactor device is connected with the demulsification-air flotation combined device, the rear end of the catalytic oxidation reactor device is connected with the precipitation tank, and a stirrer II is arranged in an inner cavity of the catalytic oxidation reactor device. The middle of the precipitation tank is communicated with the filtrate observation pool, the bottom of the precipitation tank is connected with the filter press through a blow-off pipe, and an outlet of the filter press is communicated with the filtrate observation pool. The system is low in energy consumption, small in occupied area and high in treatment efficiency, and meanwhile, the concept of treating waste with waste, saving energy and reducing emission is embodied through reasonable utilization of waste acid and waste heat.

Description

technical field [0001] The invention belongs to the technical field of hazardous waste treatment, and in particular relates to a physical and chemical treatment system of waste emulsion and a treatment process thereof. Background technique [0002] Hazardous waste is a type of waste that is toxic, flammable, explosive, corrosive, chemically reactive and infectious, and can cause serious harm to the ecological environment and human health. In the metal manufacturing industry, a large amount of oily wastewater, that is, waste emulsion, is produced in the heat treatment, cutting, grinding and other sections of parts and components, which belongs to the category of hazardous waste. According to the "Hazardous Waste List" promulgated by the state, the waste emulsion belongs to the category of hazardous waste (HW09). Emulsion has certain lubricity, cooling, cleaning and rust resistance, and is the most widely used cutting fluid in production. After the emulsion is recycled for m...

AI Technical Summary

Problems solved by technology

However, the acidification demulsification reaction, air flotation treatment and catalytic oxidation reaction generally use independent reaction devices, which occupy a large area of ​​equipment, relatively high investment, long process flow and low treatment efficiency.

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