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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

Active Publication Date: 2017-03-22
TIANJIN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In addition, the structure of the traditional dissolved air flotation system is relatively complex, and the requirements for maintenance and operation are relatively high

Method used

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  • Intermittent air flotation water-purifying device
  • Intermittent air flotation water-purifying device

Examples

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Embodiment Construction

[0018] One example is listed below to illustrate the effects of the present invention, but the scope of claims of the present invention is not limited thereto.

[0019] Such as figure 1 As shown, an intermittent air flotation water purification equipment includes an air compressor (1), a dissolved air tank (2), a circulating water pump (3), a pressure sensor (4), a nozzle (5), and an air release device (6) , air flotation column (7), agitator (8), stirring paddle (9), water pump (10, 16), liquid level sensor (T1-T3), solenoid valve (V1-V8), metering pump (19, 20 ), coagulant tank (21), flocculant tank (22) and automatic control device. The stirring paddle (9) is placed in the air flotation column (8), and the degasser (6) tangentially introduces dissolved air water from the bottom of the air flotation column (7) to form a swirling flow. The automatic control device uses PLC to control the start-stop and rotation speed of the agitator (8), the opening and closing of the solen...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/24C02F1/52
CPCC02F1/24C02F1/52C02F2209/005C02F2209/03C02F2209/42C02F2209/44
Inventor 张文晖翁良宇
Owner TIANJIN UNIV OF SCI & TECH
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