MBR (membrane bioreactor) sewage treatment machine

Abstract

The invention discloses an MBR (membrane bioreactor) sewage treatment machine. The MBR sewage treatment machine comprises an anaerobic tank, an MBR membrane tank and a disinfection tank which are sequentially connected in an integrated manner, wherein a sewage inlet is formed in a side wall, far away from the MBR membrane tank, of the anaerobic tank, elastic filler is arranged in the tank wall of the anaerobic tank, and two rows of anaerobic tank separating plates are vertically arranged in the anaerobic tank at intervals and are alternately fixed on a top cover and a bottom wall of the anaerobic tank; an aeration pipeline is arranged at the bottom of the MBR membrane tank, the aeration pipeline is connected with a blast blower, the bottom, far away from the anaerobic tank, of the MBR membrane tank is connected with a reflux pump, and the water outlet of the reflux pump is connected to the sewage inlet of the anaerobic tank; and the disinfection tank is connected with a disinfector, and two rows of disinfection tank separating plates are vertically arranged in the disinfection tank at intervals and are alternately fixed on a top cover and a bottom wall of the disinfection tank. The MBR sewage treatment machine disclosed by the invention has the advantages that sewage treatment effect is good, and service life of an MBR membrane can be prolonged.

Description

technical field [0001] The invention relates to the technical field of sewage treatment equipment, in particular to an MBR sewage treatment machine. Background technique [0002] Membrane Bio-Reactor (MBR) is a new type of wastewater treatment system that organically combines membrane separation technology and biological treatment technology. [0003] The traditional MBR sewage treatment process is generally: raw water-grid-regulating tank-lift pump-bioreactor-circulating pump-membrane module-disinfection device. In this traditional MBR sewage treatment process, the sewage has not been anaerobic. After treatment, it reaches the membrane module, so that the impurity content in the sewage reaching the membrane module in the sewage treatment system is high, the sewage viscosity is relatively high, and it is easy to cause membrane blockage, so that the membrane module is backwashed frequently, which affects the operating efficiency of the entire system , and reduce the efficien...

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Problems solved by technology

[0004] 1. There is no independent sludge return system between the membrane module and the anaerobic tank, so that the sludge with denitrification function cannot be cultivated, the degradation rate of refractory substances is low, and the nitrogen removal rate is low;

[0005] 2. The growth and reproduction of anaerobic microorganisms is slow, the denitrification generation cycle of sewage in the anaerobic tank is long, the denitrification time is long, the equipment startup and treatment time are long, the effluent water quality does not meet the discharge standard, and further aerobic treatment is required

[0006] 3. In the existing MBR sewage treatment system, the membrane modules are installed in the MBR pool. Both the MBR pool and the anaerobic pool are pools formed by civil engineering structures. The pools formed by civil engineering structures occupy a large area and have a long construction period. Construction must be carried out at the place of use, which causes inconvenience in construction and is not suitable for use in places with small sewage treatment volumes

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