Electrolytic flotation equipment

Abstract

The invention discloses electrolytic flotation equipment. The electrolytic flotation equipment comprises a shell, wherein two sides of the shell are respectively provided with a water inlet and a water outlet, the top end of the shell is provided with a slag scraping device, buffering baffle plates and overflow weir plates are sequentially arranged in the shell at intervals to divide the shell into a buffering area, a mixing area and an effluent area, a slag discharging tank corresponding to the slag scraping device is arranged on the shell above the tail end of the mixing area, an electrolytic generator is arranged at the bottom of the front end of the mixing area and comprises a guide rod, a movable platform and a plurality of electrode groups, the guide rod is vertically fixed on the shell at the bottom of the front end of the mixing area, the bottom end of the guide rod is provided with a limiting stopper, the movable platform is movably sheathed on the guide rod, the electrode groups are fixed on the movable platform, electrodes can be very conveniently taken out of water for replacement, titanium-based oxidizing electrodes are used, and hypochlorite and hydroxyl free radicals are formed simultaneously when microbubbles are formed so as to effectively reduce the COD (Chemical Oxygen Demand), improve the B / C ratio and be beneficial to the follow-up biological treatment.

Description

technical field [0001] The invention relates to electrolytic air flotation equipment in the field of air flotation equipment, which is used for removing suspended matter and particulate matter in liquid. Background technique [0002] The air flotation equipment mainly uses highly dispersed micro-bubbles as the carrier to adhere to the hydrophobic-based objects in the wastewater, so that the small bubbles and objects are regarded as a whole, and their overall density is lower than that of water to float to the water surface, thereby realizing solid-liquid or liquid-liquid process of separation. In water treatment, the air flotation method can be used in occasions where the sedimentation method is not applicable, to separate suspended solids whose specific gravity is close to water and difficult to settle, such as oil, fiber, algae, etc., and can also be used to concentrate activated sludge. There are two commonly used methods for generating microbubbles: aerated air flotatio...

AI Technical Summary

Problems solved by technology

In addition, the traditional electrolysis method is not commonly used, mainly because the previous electrode has no breakthrough progress, coupled with design defects, the electrolytic air flotation electrode is easy to scale, consumes a lot of power, and the replacement of the electrode is complicated.

[0003] Insufficiency of traditional air flotation: the aeration tube or aeration head used in aeration air flotation may be clogged, and it is troublesome to replace after clogging. It is necessary to empty the water in the equipment or lift all the aeration tubes out of the water for replacement

Moreover, the failure of the aeration pipe under the water surface cannot be found in time, and it is generally repaired only after the air flotation effect is significantly reduced.

[0004] 1. The air utilization rate of aeration air floatation is very low, because the bubbles generated by the aeration head are large in size and rise fast, and the suspended solids in the water cannot be caught in time and have already surfaced.

[0005] 2. Dissolved air flotation has a complex structure and many supporting equipment, and the volume of bubbles produced is smaller than that of aeration method, but due to the addition of dissolved air links, the energy consumption is relatively large

[0006] 3. Because the traditional electrolysis method uses carbon steel or stainless steel as the electrode, the electrode will gradually dissolve, improve the chroma in the water, and the electrode surface will be passivated, reducing the current efficiency

[0007] 4. The electrodes of the traditional electrolysis method are fixed on the box body, and it is very troublesome to replace them. In addition, the electrodes are consumed quickly and need to be replaced frequently

[0008] 5. The traditional electrolysis method only uses the principle of electrolysis to produce gas, and does not optimize the electrode settings, resulting in low current efficiency and excessive energy consumption, which affects the promotion of equipment

In a preferred embodiment, a buffer water tank can be provided at the front end of the device of the present invention, and a magnetization module and a cavity can also be provided in the dispersion chamber, so as to achieve better degreasing effect and easier removal of scale on the electrode plate. Effect, this invention effectively overcomes the deficiencies of the prior art, but its electrodes are galvanized steel sheets, the electrodes will gradually dissolve, improve the chroma in water, the electrode surface will also scale, reduce the current efficiency, and its comb-shaped electrode group is fixed In the dispersion chamber, it is difficult to disassemble and replace, the electrode consumption is fast, and the processing cost is high

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