Tubular metal membrane bioreactor

Abstract

The invention relates to a tubular metal membrane bioreactor, adopting an original microfiltration or ultrafiltration tubular metal membrane piece and comprising an inner cavity and a filter layer. The filter layer is made from a metal material, the metal filter layer has the thickness of 1-10 mm, the tubular membrane has the external diameter phi of 10-135 mm; the tubular metal membrane has the aperture of 0.1-100 microns; the original tubular metal membrane piece can resist the back washing pressure of 0.1-3 MPa, and the filter layer of the original tubular metal membrane piece can be made from stainless steel, nickel, bronze, high-temperature alloy, Hastelloy magnetic alloy, titanium, Monel alloy, and the like and is formed through on-step sintering without single filter membrane layer. The tubular metal membrane bioreactor can resist high-pressure back washing, is simple and thorough to clean, and has the advantages of high strength, stable chemical properties, strong resistance to acid, alkali and high temperature, wider application range, long service life, strong antimicrobial capability, narrow aperture distribution, high filter precision, and the like.

Description

technical field [0001] The invention relates to a membrane bioreactor, in particular to a metal membrane bioreactor process using tubular metal ultrafiltration or microfiltration membranes. Background technique [0002] The membrane bioreactor process has the characteristics of high treatment efficiency and excellent water quality. It is a sewage treatment process with great development prospects. The existing membrane bioreactor technology mostly uses hollow fiber membranes with a pore size of 0.1-4 μm and a membrane filament diameter of about 1 mm, which is the mainstream membrane element in the current membrane bioreactor technology. However, it has the following defects in practical application: 1. The hollow fiber membrane is an organic polymer material membrane element, which has poor strength and is easy to break under the conditions of air-water flushing and recoil; It is easy to be entangled or blocked by dirt, and it is difficult to clean; 3. The mechanical streng...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a tubular metal membrane element with high strength, easy cleaning, and not easy to block and break for the membrane bioreactor, so as to overcome the pressure resistance and temperature resistance of organic polymer membrane materials in the existing membrane bioreactor technology. and poor acid and alkali resistance, easy fouling, easy deformation of the membrane material, poor strength of the original plate metal membrane, and difficult cleaning

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