Gas-ejecting self-cleaning type roll membrane filtration apparatus and gas permeation rate detection method using filtration apparatus

Abstract

The invention discloses a gas-ejecting self-cleaning type roll membrane filtration apparatus and a gas permeation rate detection method using the filtration apparatus. A vertical membrane housing is arranged, high-pressure compressed gas is inputted when materials are charged, so that a strong force is exerted on the surface of a filtration membrane during filtering, aggregation of pollutants on the membrane surface is avoided, generation conditions of pollutants are destroyed, membrane blockage of the filtration membrane is prevented, treatment efficiency of the membrane is higher, and water flux is kept stable; self-cleaning of the apparatus is carried out during filtration, so that the usage life of the roll membrane element is prolonged, excessive flushing and cleaning for the apparatus are avoided, and operation cost of the apparatus is reduced. Different types of compressed gas is used for test, gas permeation rates of different types of compressed gas in the filtration membrane are obtained, so that reference data for selecting appropriate types of compressed gas for the filtration apparatus is provided.

Description

technical field [0001] The invention relates to an air-entraining self-cleaning roll-type membrane filter device and a gas transmission rate detection method using the filter device, and belongs to the technical field of membrane separation or the technical fields of water supply and drainage and environmental protection. Background technique [0002] Membrane separation technology refers to the technology of separating the components in the mixture by using the selective permeability of the membrane under the action of driving force. Membrane separation technology is widely used in environmental protection, food and beverage, pharmaceutical, chemical and other fields. In today's human society vigorously advocating and effectively implementing the trend of energy conservation, emission reduction and circular economy, the application of membrane technology in material separation and water treatment will become more prominent. [0003] Membrane separation can be divided into ...

AI Technical Summary

Problems solved by technology

Although the vertical roll-type membrane can effectively clean the surface of the membrane through the tiny bubbles formed by air and water, it cannot destroy the conditions for the generation of pollutants and can only be cleaned passively. At the same time, when the material to be treated contains viscous pollution When there are a lot of substances or substances with a high tendency to foul, the cleaning effect will be poor, the membrane flux will decrease, and the service life will decrease, resulting in a decrease in membrane treatment efficiency.

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