High throughput and pressure-proof micronet element with gas-liquid separation function

Abstract

The invention relates to a high throughput and pressure-proof micronet element with a gas-liquid separation function, which is applied to a micronet impurity separation device in water or sludge, in particular to gas-liquid separation of primary sludge with high concentration and great viscosity. The high throughput and pressureproof micronet element is rectangular. The outer surface is a micronet filter face, and the cavity which is in a semi-closed structure is provided with a filtrate channel and a gas-liquid separation channel. The filtrate channel of the cavity is a latticed or stripe support plate. The gas-liquid separation channel consists of a perforated panel and a guide groove. The guide groove divides the perforated panel into a plurality of stripe liquid collecting slots. The gas-liquid mixed flow passing through the perforated panel is separated. The filtrate is gathered in the liquid colleting slots and flows out through a hole at the top of a micronet element communicated with the liquid collecting slots. Gas in the gas-liquid mixed flow is blocked by the perforated panel and returns to the external environment again after passing through the filtrate channel and the micronet filter face. The micronet element provided by the invention is easy to manufacture and detach, and large in filtration flux, and the support plate is arranged to resist external high pressure, so that the high throughput and pressure-proof micronet element with the gas-liquid separation function further has the function of separating the gas-liquid mixed flow.

Description

technical field [0001] The invention relates to a high-throughput and pressure-resistant micro-grid element with gas-liquid separation function, which is applied to the micro-grid impurity separation equipment in sewage or sludge, especially suitable for gas-liquid in primary sludge with high concentration and high viscosity separate. Background technique [0002] Microgrids have attracted widespread attention in the field of membrane separation due to their advantages such as low component cost, large flux, wide source of materials, low power consumption, and easy cleaning. Some researchers used micro-nets in the development and application of impurity separation and pretreatment technology in sewage and sludge. Using the principle that the micro-mesh pore size is smaller than the impurity particle size but larger than the sludge flocs, the remaining activated sludge, primary Effective separation of sludge impurities in sinking sludge. [0003] In the development and appl...

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Problems solved by technology

[0003] In the development and application of micro-grid sludge and impurity separation equipment, in order to keep the sludge and impurity mixed liquid in a completely mixed state and effectively control the micro-grid pollution, an aeration device is often supplemented at the bottom of the micro-grid separation component and applied Larger aeration intensity, especially in the primary sludge with high concentration and high viscosity, in order to maintain a stable micro-grid flux, the aeration intensity is much higher than the traditional membrane separation process, the aeration per unit projected area of ​​the micro-grid module Strength up to 1.5~3.0m 3 / (m 2 min), so that the gas-liquid ratio in the reactor is very high, and the micro-grid has the characteristics of large pore size and high flux, so that the gas-liquid mixed fluid can easily enter the interior of the micro-grid component, and output the system with the micro-grid water collection pipe , resulting in problems such as cavitation in the mud outlet pipeline system and water pumps, unstable rotameters that are difficult to count, and even water outflow interruptions

[0004] In addition, due to the high-flux characteristics of the micro-grid, the transmembrane pressure difference between the inside and outside of the micro-grid is much higher than that of the traditional flat membrane, which will inevitably reduce the effective thickness of the micro-grid components, which will lead to increased pollution of the micro-grid. Problems such as the decrease of the amount of sludge and the shortening of the service life of the micro-grid directly hinder the application and promotion of the micro-grid sludge impurity separation technology

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