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Membrane bioreactor and membrane fouling control device and method for membrane bioreactor

A membrane bioreactor and control device technology, applied in chemical instruments and methods, biological water/sewage treatment, sustainable biological treatment, etc. cost and other issues, to achieve the effect of reducing membrane fouling, simple structure and easy operation

Active Publication Date: 2020-11-24
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the serious membrane fouling problem, the MBR system needs to be cleaned regularly online or offline, and a large amount of aeration is required to ensure a certain running time. The cleaning and operation process requires a lot of energy and chemicals, which has high energy consumption and potential Problems of secondary pollution and high cost
[0003] In addition, with the continuous improvement of energy and resource recovery requirements, anaerobic MBR has received great attention from scientific researchers in recent years, but it needs to maintain an anaerobic environment during operation, and conventional air aeration cannot be used to control membrane fouling. , the membrane fouling rate is faster and the cost is higher

Method used

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  • Membrane bioreactor and membrane fouling control device and method for membrane bioreactor
  • Membrane bioreactor and membrane fouling control device and method for membrane bioreactor

Examples

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Embodiment 1

[0045] A scanning type membrane bioreactor membrane pollution control device, comprising a fluid medium (water or air) injection system, provided with a lifting system and a control system of the injection device; a fluid medium comprising a water injection system of the compressor, air compressors, rigidly connected 5 pipe, flexible pipe is connected, the gas and the liquid pipe 4 and the switching means 3 a check valve, pressure conduit 10 and the nozzle; the lifting means comprises hydraulic or mechanical lifting system, the fluid injection system is fixed to the medium lift system, with the lifting system run up and down reciprocation; fluid medium injection system and lift control system programmed by computer control system, while designed for manual control cabinet, the control content switching medium comprising ejection, the ejection pressure adjustment, the injection time control, the lifting speed and time control, and hoist system reciprocation frequency control interv...

Embodiment 2

[0054] A membrane bioreactor membrane pollution control method for controlling contamination in situ anaerobic MBR membrane, comprising the steps of:

[0055] 1) The programming or manually, according to the cleaning requirements membrane module, periodically opening the lifting device, spraying high-pressure water injection system, according to the operating conditions to optimize the transmembrane pressure or to select the number of reciprocating motion and injection pressure;

[0056] 2) When the membrane flux and transmembrane pressure required to achieve the desired reciprocating motion is stopped, the injection device is reset to the bottom of MBR systems;

[0057] 3) the injection device is reset, conventional injection water, the active sludge was stirred strength requirements set injection;

[0058] 4) during operation may take a conventional cleaning procedures, i.e., when the membrane module periodically reciprocating cleaning unsoiled;

[0059] 5) reaches serious membr...

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Abstract

The invention discloses a membrane bioreactor and a membrane bioreactor membrane pollution control device and method. The membrane bioreactor comprises a fluid medium conveying device, an injection device and a movement device, wherein an exhaust port of a gas compressor of the fluid medium conveying device is communicated with an air inlet of a pipeline switching device through a gas conveying pipeline; the gas conveying pipeline is provided with a check valve; a liquid outlet of a liquid pump is communicated with a liquid inlet of the pipeline switching device through a liquid conveying pipeline; the liquid conveying pipeline is provided with a check valve; the injection device comprises an injection pipe and a plurality of nozzles; an inlet of the injection pipe is communicated with anoutlet of the pipeline switching device through a pipeline; each outlet of the injection pipe is provided with one nozzle; the movement device is installed in or out of the MBR (membrane bioreactor);the injection device is arranged on the movement device. According to the membrane bioreactor and the membrane bioreactor membrane pollution control device and method disclosed by the invention, in-situ efficient control on aerobiotic and anaerobic MBR membrane pollution can be met, operation is simple, energy consumption is low, and an application range is wide.

Description

Technical field [0001] The present invention pertains to a membrane bioreactor (MBR) fouling control technology, particularly to a membrane bioreactor and membrane bioreactor membrane pollution control apparatus, method. Background technique [0002] Currently, severe water shortages, the need for large amounts of sewage advanced treatment, membrane bioreactor (MBR) because with efficient processing power, excellent water quality during operation and a high degree of automation is widely accepted environmental engineering and research community. Due to a serious problem of membrane fouling, MBR systems require periodic cleaning online or offline, and requires a large amount of aeration in order to protect certain operating time, the process of cleaning and running takes a lot of energy and chemicals, the presence of high energy consumption, potential secondary pollution and high costs. [0003] In addition, with the increasing requirements for energy and resource recovery, and an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/12C02F3/28B01D65/02
CPCB01D65/02B01D2321/02C02F3/1268C02F3/2853Y02W10/10
Inventor 刘嘉栋高波田畅王磊
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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