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Process for treating a liquid by flotation induced by floating particles

一种微粒、液体的技术，应用在浮选水/污水处理、水/污水处理、化学仪器和方法等方向，能够解决易堵塞过滤结构、增加成本等问题，达到降低成本的效果

Inactive Publication Date: 2013-08-07
VEOLIA WATER SOLUTIONS & TECH SUPPORT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0042] However, one drawback of this type of technology lies in the fact that a part of the flocculation material remains dissolved in the water and tends to clog downstream filter structures
Furthermore, the cost of this lost polymer increases the cost of implementing this technology

Method used

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  • Process for treating a liquid by flotation induced by floating particles
  • Process for treating a liquid by flotation induced by floating particles
  • Process for treating a liquid by flotation induced by floating particles

Examples

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Embodiment Construction

[0067] The invention, together with the various advantages it presents, will be more clearly understood from the following description of non-exhaustive embodiments, given with reference to a single drawing.

[0068] see figure 1 , the equipment for implementing the inventive method comprises:

[0069] - a coagulation zone (11) in a stirred or turbulent state, which can be produced, for example, by an agitator or a static mixer;

[0070] - an agitated mixing zone (12);

[0071] - a flotation / separation zone (13 / 14) which communicates with the mixing zone via an underflow opening and which comprises means for extracting treated water (15) and flotage (20);

[0072] - a cleaning zone (17), which can be, for example, a high-speed stirred reactor or a water injection cleaning device (hydrocyclones, vibrating screens, centrifuges with perforated walls, high-speed stirred reactors, or equipped for injection at low flow rates water to limit the dilution of the sludge to other sepa...

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Abstract

A method or process for removing suspended solids from water. The method entails utilizing floating particles that include a flocculant material secured or coated to the floating particles. The floating particles are directed into a lower portion of a treatment zone and as the floating particles with the attached flocculant material move upwardly through the water, suspended solids attach or agglomerate on the floating particles. Once at the surface level of the water being treated, the floating particles can be removed and a cleaning process can be implemented where the suspended solids attached or agglomerated around the floating particles can be removed and the cleaned floating particles can be recycled and used for further water treatment.

Description

technical field [0001] The field of the invention is the treatment of water in order to treat it potable or to render it potable. More specifically, the present invention relates to the flotation treatment of water containing dissolved and / or suspended matter. Background technique [0002] Contaminated liquids or water may contain suspended matter (particulates, algae, bacteria, etc.) and dissolved matter (organic matter, trace pollutants, etc.). In the prior art, there are several techniques for treating suspended matter aimed at reducing the levels of these pollutants. [0003] These techniques include decantation and flotation. [0004] Decantation is a separation process suitable for particles with a density greater than the density of the liquid containing the particles, while flotation is a separation method for particles with a density less than the liquid containing the particles. [0005] Water treatment by flotation has many advantages over treatment by decantat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/24C02F1/28
CPCC02F1/288C02F1/56C02F1/24B01D29/46B01J35/51
Inventor 让-保罗·让迈尔菲利普·马特尔菲利普·布兰特
Owner VEOLIA WATER SOLUTIONS & TECH SUPPORT