centrifugal membrane bioreactor

Abstract

The invention discloses a centrifugal membrane bioreactor which comprises a reactor shell, a centrifugal membrane shell, a membrane, a hollow rotating shaft and a membrane frame. The centrifugal membrane shell is installed on the upper inner portion of the reactor shell through a centrifugal membrane shell frame, an upward opening is formed in the tangential direction of the centrifugal membrane shell, the hollow rotating shaft with a water inlet is arranged in the centrifugal membrane shell, the two ends of the hollow rotating shaft penetrate out of the centrifugal membrane shell which is communicated with a supernatant inlet pipe, one end of the hollowing rotating shaft is connected with a speed reduction motor through a transmission device, the other end of the hollow rotating shaft is connected with a water pump through a water pumping pipe, the membrane is installed on the hollow rotating shaft in the centrifugal membrane shell through the membrane frame, a wastewater inlet pipe and a partition board are further arranged on the upper inner portion of the reactor shell, a sludge pump is installed at the bottom of the reactor shell, and the sludge pump can be connected with a sludge conveying pipe capable of conveying sludge out of the reactor shell. The centrifugal membrane bioreactor is simple in structure and ingenious in arrangement, sludge or particles cannot be attached to the membrane easily, the service life of the membrane is long, and water filtering efficiency is high.

Description

Technical field [0001] The invention relates to a sewage treatment device, in particular to a centrifugal membrane bioreactor. Background technique [0002] At present, the treatment of domestic sewage still mostly adopts the method of centralized treatment in sewage plants. Although centralized treatment is convenient for professional management, the infrastructure cost of sewage treatment plants is high, and a supporting sewage pipeline network needs to be built, which not only increases infrastructure costs and operation Maintenance costs are also likely to cause certain pollution effects on the environment along the sewage pipe network. Today, when there is an urgent need to protect the natural environment, the centralized sewage treatment method obviously has its own limitations and drawbacks, and the huge infrastructure investment and operation and maintenance costs do not meet the requirements of sustainable development. With the progress of the times and the development ...

AI Technical Summary

Problems solved by technology

However, the traditional activated sludge method separates the mud and water through the gravity settlement of the secondary settling tank, thereby purifying the sewage. It also has many shortcomings: first, the sedimentation effect of the secondary settling tank is greatly affected by the sludge condition, especially the sludge It is prone to swelling, which will directly lead to the increase of suspended solids in the effluent, and the quality of the effluent water cannot be guaranteed; secondly, the sludge concentration in the traditional activated sludge process is not high, the floor area is large, and the volume load is low; and the excess sludge output is large , high cost of sludge treatment

However, the membrane bioreactor is easily blocked by the adsorption of sludge or particles on the membrane, resulting in discontinuous water discharge, low water filtration efficiency, and short service life of the membrane.

This situation is very serious when the shutdown

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