Particulate floatation device

Abstract

The invention discloses a particle flotator, which comprises a cylindrical tank and an air blower, wherein the tank is provided with a sewage inlet, a clear water outlet and a slag outlet; the inner bottom part of the tank is symmetrically provided with one to four pairs of gas-liquid mixing devices along the radial direction, and each gas-liquid mixing device consists of a gas-liquid mixing pipe, a water outlet pipe and a gas inlet pipe, wherein the gas-liquid mixing pipe and the water outlet pipe are vertically connected and communicated; the axis line of each gas-liquid mixing pipe is tangent to the same circle, and the circle and a circle in which the tank is positioned are concentric circles; and the other end of the water outlet pipe is extended out of the clear water outlet, the water outlet pipe is provided with the gas inlet pipe, and one end of the gas inlet pipe is extended in the gas-liquid mixing pipe, while the other end is extended out of the water outlet pipe and connected with an air outlet of the air blower. The particle flotator directly acts on water in the tank, and the independent air dissolved process is not needed, thereby unnecessarily using a high-priced air dissolved tank or air dissolved pipe, greatly saving connecting pipes, valves and associated facilities, and greatly saving product cost and lowering energy consumption.

Description

technical field [0001] The invention relates to a water treatment device, in particular to a particle flotation device for water treatment using air flotation technology. Background technique [0002] Dissolved air flotation is a kind of air flotation. It uses the characteristics of different solubility of water under different pressures to pressurize and add air to all or part of the water to be treated (or treated) to increase the amount of air dissolved in water. Pour into water with coagulant added, release under normal pressure, air precipitates to form small bubbles, which adhere to impurity flocs, causing the overall density of flocs to be lower than that of water to rise, thereby separating solid and liquid. The existing air flotation machine is mainly composed of blower, high-pressure pump, dissolved air tank, air releaser, air flotation pool, slag removal equipment, etc. Its working principle is: air fully contacts with water in the dissolved air tank under pressur...

AI Technical Summary

Problems solved by technology

The deficiencies of the existing dissolved air flotation machines are: (1) Dissolved air pumps, dissolved air tanks or dissolved air pipes are required in the process of dissolving the air. Most of these equipment are imported, the price is high, and the energy consumption is large during use; (2) In order to fully float the suspended particles, the height of the ordinary air flotation tank is relatively large and takes up a lot of space. A rotating water distribution pipe is installed in the center, although the height of the equipment is greatly reduced, but the use of the equipment is increased, and the energy consumption and equipment cost are greatly increased; (3) The service life of the dissolved air pump is short due to cavitation during operation. higher cost

In short, the existing dissolved air flotation machines have the problems of high production cost and large energy consumption

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