Membrane module for novel efficient membrane bioreactor

Abstract

The invention relates to the technical field of membrane separation, and particularly relates to a membrane module for a novel efficient membrane bioreactor. The membrane module comprises an upper end cover (6), a membrane module housing (5), a lower end cover (3), a soft pouring material (9) and hollow fibre membrane silks (10), wherein the upper ends of the plurality of hollow fibre membrane silks (10) are hermetically bonded at an upper port in the membrane module housing (5), and the lower ends of the hollow fibre membrane silks (10) freely drop inside the membrane module housing (5) to form an overhanging structure; and plugging heads (11) are arranged at the bottom ends of the hollow fibre membrane silks (10). The membrane module disclosed by the invention has the advantages that due to the design of the overhanging membrane silks, the membrane module is not easily plugged by dirt and is easy to wash and maintain; due to a positive-pressure operation, the membrane module is large in membrane flux and water treatment amount and small in occupied area is small; external-pressure type membrane silks resist pollution; and the membrane module is suitable for a higher activated sludge concentration and higher in treatment efficiency, low in running energy consumption, long in service life, and low in price, thus saving investment.

Description

[technical field] [0001] The invention relates to the technical field of membrane separation, in particular to a novel high-efficiency membrane bioreactor membrane module. [Background technique] [0002] Membrane separation technology appeared at the beginning of the 20th century and emerged rapidly after the 1960s. It has achieved rapid development in the industrial field in the past 20 years. In recent years, with the implementation of the national environmental protection policy, the market demand related to water treatment has grown rapidly, and the market demand for membrane technology has increased at a rate of nearly 30% per year. Therefore, the membrane bioreactor (MBR) based on membrane technology The market keeps expanding. However, in the application of large-scale membrane bioreactors, problems such as membrane fouling, low flux, low efficiency, large area occupation, and high energy consumption are often encountered, which hinder the accelerated promotion and a...

AI Technical Summary

Problems solved by technology

The existing external MBR adopts internal pressure tubular membrane and adopts positive pressure operation mode, so the water permeability can be high; but in order to delay the pollution of the inner wall of the membrane filament, it is necessary to maintain a high flow rate and a large reflux ratio of the influent, so the energy consumption Very high (generally 4~6 times that of the built-in MBR), and because the packing density of the tubular membrane module is low, the effective separation area of ​​the membrane module is not large

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