Horizontal type low-pressure filter membrane bioreactor

Abstract

The invention relates to a horizontal type low-pressure filter membrane bioreactor. The horizontal type low-pressure filter membrane bioreactor comprises a reaction pool; the reaction pool is dividedinto a reaction area and a precipitation area by a vertical partition plate; a communicating hole for communicating the reaction area with the precipitation area is formed in the lower part of the partition plate; a mud sliding plate which is arranged slantways is arranged on the lower part of the precipitation area; the edge of the lower side of the mud sliding plate is flushed with the lower edge of the communicating hole; a horizontal type low-pressure filter membrane and an overflowing groove are arranged on / in the upper part of the precipitation area; water after precipitation is filteredby the low-pressure filter membrane, enters the overflowing groove and is discharged out of the reaction pool; and an ultrasonic generator for cleaning the low-pressure filter membrane is arranged near the low-pressure filter membrane. The horizontal type low-pressure filter membrane bioreactor has the following beneficial effects: the horizontal type low-pressure filter membrane and the ultrasonic generator are arranged on the upper part of the precipitation area, pressure difference generated by different heights of the liquid levels of the reaction area and the precipitation area enables sewage after precipitation to flow through the horizontal type low-pressure filter membrane, and additional power equipment is not needed to provide pressure; and the arranged ultrasonic generator canperform cleaning treatment on the horizontal type low-pressure filter membrane on line, continuous treatment on the sewage is guaranteed and water is produced continuously.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a horizontal low-pressure membrane bioreactor. Background technique [0002] The current membrane separation technology is under a certain external pressure, the water flows on the membrane surface, the soluble salts and some electrolytes in the water can pass through the filter membrane, and the particles and colloids with relatively large molecular weight are blocked by the filter membrane , so that part of the particles in the water are separated and the water quality becomes clear. After a period of filtration and use, the polluted membrane surface needs to be backwashed to clean off the pollutants on the membrane surface for subsequent use. Backwashing generally uses produced water as backwashing water, and water flows from the produced water side under the action of external pressure. Enter the membrane structure and flow out from the water inlet side. During th...

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Problems solved by technology

After a period of filtration and use, the polluted membrane surface needs to be backwashed to clean off the pollutants on the membrane surface for subsequent use. Backwashing generally uses produced water as backwashing water, and water flows from the produced water side under the action of external pressure. Enter the membrane structure and flow out from the water inlet side. During this flow process, the pollutants on the membrane surface will be removed, but the whole process will consume a lot of energy, and the water production will be stopped during the backwashing process, and the purification of sewage will also be stopped. processing, so the cost is relatively high

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