Intermittent air flotation water-purifying device

A water purification equipment and air flotation technology, which is applied in flotation water/sewage treatment, water treatment parameter control, water/sludge/sewage treatment, etc., and can solve problems such as high maintenance and operation requirements and complex structure
CN106517401AActive Publication Date: 2017-03-22TIANJIN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIV OF SCI & TECH
Publication Date
2017-03-22

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Abstract

The invention provides an intermittent air flotation water-purifying device used for treating suspended materials in water. The intermittent air flotation water-purifying device is composed of an air compressor, an air-dissolving tank, a circulating water pump, a pressure sensor, a nozzle, an air releaser, an air floating column, a stirrer, a stirring paddle, a water pump, a liquid level sensor, a solenoid valve, a metering pump, a coagulant tank, a flocculating agent tank and an automatic control device. The stirring and the air floatation are integrated, so that the floor space of the device is reduced; the weak rotational flow formed in the air floating column can promote the reverse diffusion mixing of the air-dissolving water and to-be-treated water, so that the contact time of air bubbles and grains is prolonged, and the treating efficiency is increased; and the intermittent air flotation water-purifying device has the characteristics of high adaptability, compact structure, easiness in maintenance, excellent treatment effect, and the like.
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Description

technical field

[0001] The invention relates to an air flotation water purification device, in particular to an intermittent water purification device based on dissolved air flotation technology. Background technique

[0002] Dissolved air flotation technology (Dissolved air flotation, DAF) is a solid-liquid separation technology, using a large number of micro-bubbles to adhere to suspended solids in water, forming bubble-floc aggregates with a specific gravity smaller than water and floating to the water surface, so as to achieve liquid The purpose of solid separation (water purification). It has the characteristics of high processing efficiency and fast start-up, and is often used in primary or tertiary processing.

[0003] For water quality with large flow and low load, the dissolved air flotation system with continuous operation has great advantages. However, for water quality with small flow and medium-to-high load or with large load fluctuations, the treatment effici...

Claims

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