Self-forming membrane filtering method and device for wastewater treatment

A filtration method and wastewater treatment technology, applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve problems affecting application, excessive fouling, membrane wear and tear and replacement High cost and other problems, to achieve the effect of simple and reasonable device structure, low investment cost and good energy saving effect

Inactive Publication Date: 2015-06-17
LIAONING JIECHEN ENVIRONMENTAL PROTECTION EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The biggest problem in membrane application is pollution during use. Membrane pores are easily blocked by impurities in water, resulting in a decrease in flux and flow rate. The conventional method is to perform backwashing to restore the original permeability of the membrane pores.
However, due to long-term use of excessive fouling, normal flushing cannot achieve or restore the origin

Method used

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  • Self-forming membrane filtering method and device for wastewater treatment
  • Self-forming membrane filtering method and device for wastewater treatment
  • Self-forming membrane filtering method and device for wastewater treatment

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Embodiment Construction

[0030] The present invention utilizes the suspended solids (SS) in the waste water in a closed cylinder to agglomerate the suspended solids (SS) in the waste water into larger flocculent particles with the help of flocculants. Next, let it attach to the membrane frame of cylinder or prism to build a membrane by itself. This membrane is called self-generated membrane or self-built membrane. Wastewater is filtered and clarified through the self-generated membrane; specific filtration methods include:

[0031] The first step is to set the supporting formwork in the closed cylinder: the function of the formwork is to provide support for the attachment and formation of the self-generated film, and at the same time as a clear water diversion chamber; the shape of the formwork is a cylinder or a prism, which is The core components of self-modeling can be formed by engineering plastics or metals, or assembled by laminations; the surface of the one-time formed formwork is designed with ...

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Abstract

The invention discloses a self-forming membrane filtering method and device for wastewater treatment. According to the technical scheme, a fixed membrane carrier is arranged in an airtight cylinder; solid suspensions (SS) in wastewater are coagulated into relatively large flocculent particles under the action of a flocculant; the flocculent particles are attached to the cylinder or prism membrane carrier under preset pressure and cyclone action to automatically form a membrane; the wastewater is filtered, and the filtered wastewater is discharged through the self-forming membrane layer. The self-forming membrane filtering device comprises the airtight cylinder, wherein a back-flushing device is arranged at the top of the airtight cylinder; a mud discharging channel is formed in the bottom of the airtight cylinder; a water inlet is arranged in the side near the bottom end of the airtight cylinder; a water outlet is arranged in one side near the top end of the airtight cylinder; the membrane carrier connected respectively with the back-flushing device and the water inlet is arranged in the airtight cylinder; a cyclone pipe communicated with the water inlet is arranged at the bottom end in the airtight cylinder. The method is simple in treatment technology, small in occupied area, low in cost, high in efficiency and great in energy-saving effect.

Description

technical field [0001] The invention belongs to the technical field of membrane filtration, and in particular relates to a physical filtration method which utilizes suspended solids in wastewater to build a membrane to achieve the purpose of filtration, and a matching filtration device. Background technique [0002] After more than half a century of development, my country's membrane industry has entered a period of rapid growth. Membrane technologies such as ultrafiltration, microfiltration, and reverse osmosis are widely used in energy and power, nonferrous metallurgy, seawater desalination, water supply treatment, wastewater reuse, and medicine and food. applications are expanding rapidly. Especially in recent years, with the implementation of the national energy conservation and emission reduction policy and the development of the environmental protection industry, membranes, the core component of water treatment, are being used more and more widely, and the total market ...

Claims

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Application Information

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IPC IPC(8): C02F1/44C02F1/00C02F1/52C02F9/04B01D29/13B01D61/00
Inventor 王胜亮孙国付穆宾韩雪
Owner LIAONING JIECHEN ENVIRONMENTAL PROTECTION EQUIP CO LTD
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