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A method and device for prolonging the service life of membrane bioreactor membrane

A sequencing batch membrane biology and reactor technology, applied in biological treatment devices, chemical instruments and methods, biological water/sewage treatment, etc., can solve the complicated operation procedures, high process investment and operating costs, increase equipment investment and operation. Management costs and other issues to achieve the effect of reducing cleaning frequency, saving investment and operating costs, and extending effective operating time

Active Publication Date: 2020-11-20
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, an ultrasonic system is required, which increases equipment investment and operation management costs
[0013] Patent CN 201632138U, a vibrating membrane filtration device, needs to provide an additional vibrating power system for the membrane filtration system, and additional equipment such as bottom plate, counterweight, elastic spindle and eccentric block, the operating procedures are cumbersome, and the process investment and operating costs are high

Method used

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  • A method and device for prolonging the service life of membrane bioreactor membrane
  • A method and device for prolonging the service life of membrane bioreactor membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The upper end of the membrane module 2 is equipped with a sealed and fixed rotating sleeve 4, and the lower end is installed with a fixed rotating sleeve 9, and the sealed and fixed rotating sleeve 4 is used to realize that the suction pipe in the lower half rotates with the membrane module 2, and the suction pipe in the upper half is fixed. This structure enables the membrane module 2 to maintain an internal vacuum state when pumping water, while the membrane module 2 can rotate freely; the fixed rotating sleeve 9 is fixed at the bottom of the reactor, which can satisfy the free rotation of the membrane module 2; its transmission disc 3 passes through the transmission belt 7 is connected with the motor 8, and the motor 8 drives the membrane module 2 to rotate, and the number of revolutions of the membrane module 2 is the same as that of the motor 8.

[0031] When the motor 8 is working, the transmission belt 7 drives the membrane module 2 to rotate at a speed of 20r / min...

Embodiment 2

[0033] Its device structure is identical with embodiment 1. When the motor 8 is working, the transmission belt 7 drives the membrane assembly 2 to rotate at a speed of 40r / min, clockwise and counterclockwise alternately and intermittently, the intermittent time is 10s, and the rotation time is 2.5min, so as to slow down the membrane fouling , The purpose of increasing the service life. When the reading of the vacuum gauge 5 reaches 21kPa, the membrane module 2 needs to be cleaned.

Embodiment 3

[0035]Its device structure is identical with embodiment 1. When the motor 8 is working, the transmission belt 7 drives the membrane module 2 to rotate at a speed of 60r / min, clockwise and counterclockwise alternately and intermittently, the intermittent time is 15s, and the rotation time is 3min, so as to slow down the membrane fouling, The purpose of increasing the service life. When the reading of the vacuum gauge 5 reaches 21kPa, the membrane module 2 needs to be cleaned.

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Abstract

The invention relates to a method and a device for prolonging sequencing-batch membrane bioreactor membrane service life. Rotational energy of an original reactor stirring system is directly transmitted to a membrane component, the membrane component generates intermittent rotation by the aid of an original motor, so that pollution of membrane surfaces caused by microorganisms is relieved, mud and water in the reactor are uniformly mixed, the device comprises a sealing and fixing rotation sleeve, a vacuum meter, a fixing rotation sleeve, a driving disc and a driving stripe, the sealing and fixing rotation sleeve is arranged on a water drawing pipe on the membrane component, the driving disc is fixed on a water drawing pipe below the sealing and fixing rotation sleeve and connected with a motor through the driving stripe, the vacuum meter is arranged on a water drawing pipe above the sealing and fixing rotation sleeve, and the bottom of the membrane component is connected with the bottom of the reactor through the fixing rotation sleeve. The device has the advantages that the motor drives the membrane component to alternately and intermittently operate clockwise and anticlockwise, microorganisms adhering on the surface of the membrane component is removed, membrane pollution is decreased, cleaning frequencies are decreased, and production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a method and a device for prolonging the membrane service life of a sequencing batch type membrane bioreactor. Background technique [0002] In the field of industrial water treatment technology, the construction of traditional sewage treatment and reuse facilities requires a large amount of land; various secondary pollutants will be produced in the process of wastewater treatment; in the process of sewage purification due to odor, residual sludge, The pollution problems caused by noise and energy consumption are very serious. Therefore, membrane bioreactor, as a new high-efficiency sewage biological treatment technology, has received widespread attention at home and abroad, and with the continuous development and maturity of membrane technology, this technology will be widely used in practical projects. The sequencing batch membrane bioreactor can realize ni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
CPCC02F3/302C02F2203/006C02F2303/14
Inventor 胡绍伟陈鹏李林王飞刘芳王勇王永徐伟杨大正
Owner ANGANG STEEL CO LTD
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