Sewage treatment device provided with magnetically strengthened MBR (membrane bioreactor) and sewage treatment method of sewage treatment device

Abstract

A sewage treatment device provided with a magnetically strengthened MBR (membrane bioreactor) comprises a cylindrical casing provided with an upward opening, static magnets, magnetic coil props, magnetic coils, a cylindrical MBR membrane assembly, a scavenging conduit, an aeration pump and a suction pump, wherein an accommodating cavity is formed in the cylindrical casing; the static magnets, themagnetic coil props, the magnetic coils, the cylindrical MBR membrane assembly and the scavenging conduit are arranged in the accommodating cavity; a ring-shaped clamp groove which is concave downwards is formed in the bottom of the accommodating cavity; at least two magnetic coil props are arranged and uniformly distributed on the ring-shaped clamp groove; the magnetic coils are clamped in bayonets of the magnetic coil props. The sewage treatment device has the advantages as follows: 1, by means of the magnetization effect of a magnetic field, a water molecule structure is changed, water molecular viscosity of sewage is reduced, water molecule activity is improved, difficulty of water molecules passing the MBR membrane is reduced, and membrane pollution is reduced; 2, with the adoption ofthe static magnets and the magnetic coils which can be increased or decreased, strength and direction of magnetic action on the sewage in the device are adjusted, and meanwhile, the magnetic coils can be taken as magnetic conductive rings, so that magnetic force loss is reduced and the magnetic field with uniform magnetic force is manufactured.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a magnetically reinforced MBR sewage treatment device and a sewage treatment method thereof. Background technique [0002] In recent years, strong magnetic fields, pulsed magnetic field enhancement technology, high-voltage electrostatic water processors and other high-efficiency, less-polluting, and less-side-reaction treatment methods that combine magnetic fields with water treatment have developed well. Moreover, magnetized water treatment can change the structure of water molecules, Increasing dissolved oxygen in water, increasing microbial enzyme activity, reducing surface tension, and increasing mass transfer efficiency have a greater impact on the physical and chemical properties of sewage, reducing the difficulty of sewage treatment. However, due to the memory effect of magnetic treatment, magnetic field water treatment is currently There are few studies, and ther...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the effect of magnetic force alone on the treatment of pollutants in sewage is poor. Magnetic force can only change the physical state of water molecules in sewage. It cannot achieve good results in the direct removal of pollutants such as COD and ammonia nitrogen. Using MBR for sewage treatment The effect is good, but in order to slow down membrane fouling, backwashing and off-line cleaning must be carried out frequently, which has become a limiting factor in actual use

[0005] This shows that magnetization treatment is effective for sewage modification, but it is not suitable for the removal of pollutants in sewage, while MBR treatment has a good effect, but it is more complicated to use and clean

The problems existing in the existing technology mainly include the following aspects: 1. Membrane fouling is difficult to solve, and the operation of online cleaning and offline cleaning is relatively complicated; 2. It is difficult to directly achieve the purification effect when magnetic treatment of sewage, and it is difficult to determine the used Magnetic parameters; 3. In MBR, the concentration of activated sludge needs to be easy to control, so that membrane fouling can be slowed down while achieving better biochemical effects; 4. At present, permanent magnets are used less in magnetic water treatment to treat sewage, because their During the construction process, the construction of the magnetic pole is difficult, and the magnetic force of the magnet is difficult to be fully utilized

Images