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Apparatus for water treatment using filtration or a membrane separation method

A technology of water treatment and equipment, applied in the direction of semi-permeable membrane separation, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of membrane or filter pollution, impossible to remove the membrane, etc., to achieve a compact device, Inexpensive effect

Inactive Publication Date: 2013-06-12
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some cases, the formation of the overlay is irreversible, making removal impossible and requiring replacement of the entire membrane
Furthermore, membranes or filters are easily fouled by microorganisms such as algae or bacteria, necessitating the use of chemicals for sterilization that form unwanted by-products

Method used

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  • Apparatus for water treatment using filtration or a membrane separation method
  • Apparatus for water treatment using filtration or a membrane separation method
  • Apparatus for water treatment using filtration or a membrane separation method

Examples

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Embodiment Construction

[0025] figure 1 A first application example of the present invention at the time of a membrane separation method is shown. A housing 10 of a device for water treatment is shown in a schematic illustration. Arranged therein is a membrane 12 designed as an anode, which separates an inflow or retentate side 14 of the device from an outflow side 16 . The cathode 18 is arranged on the outflow side 16 .

[0026] Fluid supplied as supply 20 passes through membrane 12 . In this case, the substance to be separated remains on the inflow side 14 , is concentrated there and is discharged as retentate 22 . At the same time, the application of a direct or alternating voltage between the cathode 18 and the anode leads to the formation of oxidizing or bactericidal components based on oxygen or chlorine. Here, water is split into oxygen and hydrogen by an electrochemical reaction. Here, ozone (O 3 ) and OH groups, hydrogen peroxide (H 2 o 2 ). This substance has a bactericidal effect....

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PUM

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Abstract

An apparatus for water treatment is proposed that comprises a means for mechanical separation constructed as a membrane (12) or filter surface, such that the means for mechanical separation is constructed as an anode and a cathode (18) is arranged at a distance therefrom.

Description

technical field [0001] The invention relates to a device for water treatment by filtration or membrane separation. Background technique [0002] For the treatment of raw water or process water or waste water, different methods are used in separate process stages. Mechanical cleaning by filtration or membrane separation methods is known. In filters used in dead-end mode, but also in membranes used in so-called cross-flow filtration, a coating develops over time. This coating impairs the function of the filter or membrane and has to be removed with high energy and technical costs. In some cases, the formation of the covering layer is irreversible, such that removal is impossible and the entire membrane needs to be replaced. Furthermore, the membranes or filters are easily contaminated by microorganisms such as algae or bacteria, so that germicidal chemicals must be used which form unwanted by-products. [0003] The chemical treatment of raw water, process water or waste wa...

Claims

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Application Information

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IPC IPC(8): C02F1/44C02F1/467B01D61/42
CPCB01D61/425B01D71/022B01D2313/345B01D2313/365B01D2315/08B01D2315/10B01D2325/26C02F1/44C02F2001/46142C02F2001/46147C02F1/4672
Inventor 齐格弗里德·埃格纳
Owner FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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