Column-type hollow fiber membrane assembly

Abstract

The invention relates to a column-type hollow fiber membrane assembly which comprises a membrane shell and a hollow fiber membrane unit fixed in the membrane shell. A water inlet and an air inlet are arranged on the membrane shell at the lower part of the hollow fiber membrane unit; a water production port and a concentrated solution drain port are arranged on the membrane shell at the upper part of the hollow fiber membrane unit; a concentrated solution drain pipe is arranged in the membrane shell at the upper part of the hollow fiber membrane unit; the hollow fiber membrane unit comprises a plurality of hollow fiber membrane components, a water inlet end center pipe and a water production end center pipe; each hollow fiber membrane component consists of a water inlet end membrane box, a water inlet end resin cast fixed layer, a water production end membrane box, a water production end resin cast fixed layer and a plurality of hollow fiber membrane yarns fixed between the two resin cast fixed layers; a gap is reserved between each two adjacent water inlet end membrane boxes to form a gas-liquid diversion passage; a plurality of gas-liquid diversion holes are also arranged inside each water inlet end membrane box; and each hollow fiber membrane component is connected with the water inlet end center pipe and the water production end center pipe by the water inlet end membrane boxes and the water production end membrane boxes.

Description

technical field [0001] The invention relates to a sewage treatment device, more specifically to a column type hollow fiber membrane module. Background technique [0002] With the rapid development of my country's economy, the consumption of water resources has doubled. On the one hand, it has caused a shortage of water resources, and at the same time, it has also increased the generation of sewage, which has increased the pressure on sustainable development of society and the environment. For this reason, relevant parties A large amount of money has been invested in the treatment of sewage and its resource reuse. Membrane separation technology and devices have been widely used in biological, chemical, pharmaceutical, food, municipal and other sewage treatment fields in recent years. In order to facilitate industrial production and installation, improve the working efficiency of the membrane, and achieve the largest membrane area per unit volume, the membrane is usually assem...

AI Technical Summary

Problems solved by technology

[0005] First, the existing column-type hollow fiber membrane module uses resin to fix the hollow fiber membrane filament and the membrane shell together, which causes inconvenient operation and reduces production efficiency when making large-scale hollow fiber membrane modules

[0006] Second, due to the unreasonable structural design of the gas-liquid diversion holes in the resin-cast fixed layer at the water inlet, the overall strength of the fixed layer has decreased, and the decrease in the amount of resin per unit volume has also reduced the bonding strength between hollow fiber membranes

[0007] Third, because the number of gas-liquid diversion holes is limited by the strength of the resin fixing layer, the distribution of hollow fiber membranes is uneven, which reduces the anti-pollution ability of hollow fiber membranes, affects the cleaning effect of column-type hollow fiber membrane modules, and shortens the service life.

[0008] Fourth, the existing column-type hollow fiber membrane module uses resin to fix the hollow fiber membrane and the membrane shell together. When a part of the hollow fiber membrane is damaged during operation, the entire membrane module can only be scrapped, resulting in waste of resources. Increase input cost

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