Novel membrane bioreactor and treatment process thereof for industrial waste
A membrane bioreactor and industrial wastewater technology, which is applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, aerobic and anaerobic process treatment, etc., can solve membrane fouling and membrane flux drop Fast, membrane flux decline and other problems, to achieve the effect of improving the removal rate of total nitrogen
Inactive Publication Date: 2011-04-06
XIAMEN UNIV OF TECH
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[0012] If the operation mode of the traditional membrane bioreactor is continuous operation, the membrane fouling is more serious, and the membrane flux drops rapidly, so the filter membrane plate needs to be replaced frequently
For this reason, the operation mode of traditional membrane bioreactors is mostly intermittent suction or intermittent aeration, etc. During the intermittent process, membrane fouling can be reduced to a certain extent, but the decline in membrane flux is still obvious and there is no recovery.
[0013] Moreover, the traditional membrane bioreactor does not have a good application effect in nitrogen and phosphorus removal, especially in the treatment of high-concentration refractory wastewater such as printing and dyeing wastewater, and the removal of total nitrogen is difficult to meet the discharge standard
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[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0048] Disclosed by the present invention is a treatment process of membrane bioreactor in industrial waste water, such as figure 2 Shown is the process flow of the first preferred embodiment of the present invention. Described treatment process can adopt traditional membrane bioreactor, and the structure of traditional membrane bioreactor can refer to as figure 1 As shown and referring to the background technology, its treatment process includes the following two stages:
[0049] 1. Continuous water in and out and aeration stage:
[0050] Water is continuously fed into the membrane bioreactor and pumped continuously, and the aeration pipe is aerated at the same time. In this stage, the waste water is biochemically treated and physically separated, and the obtained dialysate is discharged from the outlet pipe 4 . After this stage...
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The invention discloses the treatment process for industrial waste of a membrane bioreactor, which comprises two stages: 1, a stage of continuous filling and pumping and aeration, in which water is filled in and pumped out from the membrane bioreactor continuously while aeration is performed, and after operation for a certain period, the membrane bioreactor enters other stage; and 2, a stage of aeration, in which water filling and pumping are stopped, aeration is continued, fine gas flow formed by aeration flushes the membrane of a membrane component in the membrane bioreactor, and after operating for a certain period in the stage, the membrane bioreactor operates again in the first stage. As the aeration process is performed, the gas flow formed by the aeration can flush the membrane and relieve membrane pollution and has obvious effects on the recovery of membrane flux. The invention also discloses a novel membrane bioreactor (MBR), which has an air distribution pipe the conventional MBR lacks; and the air distribution holes on the air distribution pipe realize aeration.
Description
technical field [0001] The invention relates to an industrial waste water treatment equipment and a treatment method, in particular to a novel membrane bioreactor and its treatment process in industrial waste water. Background technique [0002] Membrane bioreactor (MBR) is a new technology combining membrane separation technology and bioreactor. Membrane separation technology is a technical method that uses a special semi-permeable membrane to selectively separate, concentrate or purify different components in a liquid, and is a kind of physical and chemical treatment method. Bioreactor is a technical method that uses microorganisms in activated sludge to degrade organic pollutants in wastewater to achieve sewage treatment. Therefore, membrane bioreactor is a typical combination of biochemical treatment and physicochemical treatment. In the 1960s, American scholars first combined the activated sludge process with membrane separation technology and applied it to the remova...
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Inventor 柴天傅海燕严滨张明真赵坤许鹏成侯明
Owner XIAMEN UNIV OF TECH