Nano-catalysis, electrolysis, flocculation and air-floatation device

Abstract

The invention provides a nano-catalysis, electrolysis, flocculation and air-floatation device. A coagulative precipitation tank, a primary air-floatation tank, an electrolytic air-floatation tank and a slag-discharging tank are arranged in a housing of the device, wherein the top of the coagulative precipitation tank is provided with a water inlet and a mixer; the bottom of the coagulative precipitation tank is communicated with the primary air-floatation tank; a side sewage-draining outlet is connected with a sewage-draining pipe; a dissolved gas release pipe is arranged at the edge of the primary air-floatation tank; the sewage-draining outlet is connected with the sewage-draining pipe; the upper portion of the inner side of the primary air-floatation tank is communicated with the electrolytic air-floatation tank; the electrolytic air-floatation tank is divided into an upper layer and a lower layer by an upper-lower separator plate; a slag-scraping device is arranged in an upper gas-liquid separation chamber; an electrolytic cell is mounted between the upper layer and the lower layer of the electrolytic air-floatation tank; the bottom of the electrolytic cell is fixed on the inner bottom of the casing; the top of the electrolytic cell is open and horizontal with the top of the upper-lower separator plate; an electrode is installed in the electrolytic cell; and an interval between an anode and a cathode of the electrode serves as a water passage. The device integrates multiple functions of electrolysis, flocculation precipitation, air-floatation and the like together, has high automation degree, sewage-discharging efficiency and low running cost, and is convenient for operation and maintenance.

Description

technical field [0001] The invention relates to a nano-catalytic electrolytic flocculation air flotation device, in particular to a device which integrates physical treatment, physicochemical treatment and biochemical treatment, and is covered with a nano-scale noble metal compound coating material with good catalytic properties. A nano-catalyzed electrolytic flocculation air flotation device with a titanium electrode as the anode. Background technique [0002] At present, the technologies for controlling lake eutrophication and wastewater can be divided into three categories: physical treatment, physicochemical treatment and biochemical treatment. Physical treatment mainly uses methods such as precipitation, filtration, flotation, and evaporation to remove impurities with larger particles, among which flotation is also called air flotation, which is one of the most convenient wastewater treatment methods. A large number of micro-bubbles are generated in the water to form a...

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Problems solved by technology

[0005] Chinese patent CN02248009.9 discloses a device for treating sewage by electric floatation. The electric floatation reactor is composed of several tubular reaction units. The unit tubular reaction consists of cathode rod, short tube, insulating sleeve, anode outer tube and insulating pin. Composition, the anode outer tube and the cathode rod are coaxially installed, the annular gap between the two poles forms the sewage channel, the short tube attached to the other end of the cathode rod and the cathode rod together form the cathode, and several reaction units are connected in series and installed horizontally on the device body Inside, the units are connected by metal conductive strips, which solves the problems of the existing sewage treatment equipment such as small water collection ratio, poor mass transfer conditions, uneven current distribution, and low processing capacity per unit volume. It has a simple structure and is conducive to enhancing mass transfer. , shorten the treatment time, improve the efficiency of sewage treatment, etc., widely suitable for industrial wastewater treatment, industrial circulating cooling water treatment and domestic water treatment

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