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Shooting flow film-bioreactor method and device

A membrane bioreactor, bioreactor technology, applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., can solve problems such as occupying space, large operating energy consumption, and increasing floor space. , to achieve the effect of easy maintenance, saving floor space and small floor space

Active Publication Date: 2008-03-12
GO HIGHER ENVIRONMENT GRP CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Since the ejector must be placed in a high position, the energy consumption is relatively large
In addition, the ejector is placed outside the reactor, which needs to occupy a certain space, which increases the footprint

Method used

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  • Shooting flow film-bioreactor method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: small test of domestic sewage treatment, treatment capacity is 10L / d, raw water COD cr 400-500mg / L, SS 100-200mg / L. After jet MBR treatment, the effluent COD cr Less than 50mg / L, SS less than 5mg / L, energy consumption is 0.6kW·h / m 3 . After the MBR has been running for one month, the transmembrane pressure (TMP) rises from 8kPa to 10kPa, and the membrane pressure rises steadily.

Embodiment 2

[0025] Embodiment 2: small test of tobacco wastewater treatment, treatment capacity is 10L / d, raw water COD cr 450-1200mg / L, SS 100-450mg / L. After jet MBR treatment, the effluent COD cr Less than 50mg / L, SS less than 5mg / L, energy consumption is 0.7kW·h / m 3 . MBR has been running for one month, and the trans-membrane pressure (TMP) rises from 8kPa to 10.6kPa. The membrane pressure rises steadily and the operation is stable.

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Abstract

The present invention provides an operation method and device of jet membrane-bioreactor, namely that part of mud mixed liquor enters into a pipeline after pressured through a water pump to form high speed water flow by passing through a nozzle of a jet device to entrain surrounding air. Part of air is dissolved in the mixed liquor through the actions of mixing and cutting to form air-liquor spraying jet to oxygenize on the mud mixed liquor and scour on the membrane components through a diffusion air arrangement plate; simultaneously the air-liquor mixed flow drives the mud mixed liquor in a reactor to form inner recycle in the reactor which is helpful to mass and oxygen transfer, accelerate biochemical reaction and improve treatment efficiency. The device can realize membrane pollution control and improve oxygen utilization ratio simultaneously and has the advantages of low energy consumption, small noise, space saving, simple device structure and stable operation. The present invention is convenient for unmanned operation and control.

Description

technical field [0001] The present invention relates to a novel integrated membrane-bioreactor (Membrane Bioreactor, MBR) aeration mixing method and device for treating water and waste water, in particular to a jet mixing aeration method for MBR and a device for realizing the method . Background technique [0002] The shortage of water resources has become an important restrictive factor that hinders the sustainable development of social economy and affects the stability of social life. my country's per capita water resources are only equivalent to 1 / 4 of the world's per capita water resources, ranking 110th in the world, and the temporal and spatial distribution is very uneven. According to reports, among the 668 cities in my country, about 400 are short of water, and more than 100 are seriously short of water. Especially in recent years, with the rapid development of social economy, the demand for industrial and agricultural water has grown rapidly, and the problems of w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F3/20
CPCY02W10/10
Inventor 刘海宁范正虹邢林林
Owner GO HIGHER ENVIRONMENT GRP CO LTD
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