Method for continuously treating dynamic sewage through photocatalysis
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A technology of photocatalysis and photocatalysis, applied in chemical instruments and methods, light water/sewage treatment, oxidized water/sewage treatment, etc. problems, to avoid poisoning, controllable flow rate and flow
Inactive Publication Date: 2012-07-11
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Abstract
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Problems solved by technology
Wastewater contains a large number of organic pollutants, many of which are difficult to biodegrade, such as phenols, polychlorinated biphenyls and polycyclic aromatic hydrocarbons. Their biological toxicity is relatively high, which seriously threatens human health and life.
[0003] The photocatalytic treatment of sewage has become a hot spot in recent years due to its advantages of high efficiency and energy saving. However, currently
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[0018] Example 1:
[0019] (1) Pass the real sewage through a container with quartz sand to filter out the insolubles in the sewage;
[0020] (2) Put Fenton reagent into the filtered sewage;
[0021] (3) Then pass the sewage through the container with activated carbon;
[0022] (4) Pass the pretreated sewage into two series-connected photocatalytic reactors. According to the type of sewage, the two photocatalytic reactors can choose to use the same or different light sources or photocatalysts;
[0023] (5) If the reacted sewage fails to meet the standard, it can be returned to the pretreatment device for recycling.
[0024] On the basis of the above scheme, the application of treating wastewater discharged from a refinery in Tianjin:
[0025] (1) The flow and flow rate of sewage is controlled by a flow meter;
[0026] (2) The light source of photocatalytic reaction is ultraviolet and visible light source, the light source directly illuminates the solution, and the solution...
Example Embodiment
[0029] Example 2:
[0030] (1) Pass the real sewage through a container with fine sand and molecular sieve to filter out the insoluble matter in the sewage;
[0031] (2) Put flocculant into the filtered sewage;
[0032] (3) Then pass the sewage through the container with activated carbon fiber;
[0033] (4) Pass the pretreated sewage into two series-connected photocatalytic reactors. According to the type of sewage, the two photocatalytic reactors can choose to use the same or different light sources or photocatalysts;
[0034] (5) If the reacted sewage fails to meet the standard, it can be returned to the pretreatment device for recycling.
[0035] On the basis of the above scheme, the application of treating wastewater discharged from a refinery in Tianjin:
[0036] (1) The flow and flow rate of sewage is controlled by a flow meter;
[0037] (2) The light source of photocatalytic reaction is ultraviolet and visible light source, the light source directly illuminates the ...
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Abstract
The invention discloses a method for continuously treating dynamic sewage through photocatalysis. The method consists of earlier-stage pretreatment and photocatalysis treatment, and particularly comprises the following steps of: (1) introducing sewage into a coarse filtration container, and filtering insoluble substances in sewage; (2) putting an early-stage treating agent into filtered sewage; (3) introducing the sewage into a fine filtering container; and (4) introducing the pretreated sewage into at least two photocatalysis reactors which are connected in series, wherein light sources and photocatalysts used in the photocatalysis reactors are the same or different. In the method, continually-flowing practical sewage is treated dynamically, and a novel solution is provided for the treatment of mindustrial waste water; a complete pretreatment part is provided, so that poisoning of the photocatalyst can be prevented; the flow speed and flow of sewage are controllable, so that the influence of the treating time of each part on sewage treatment can be better monitored; and multiple photocatalysis reactors are connected in series, so that multiple light sources and photocatalysts can be selected and matched according to different pollutants.
Description
technical field [0001] The invention relates to the field of photocatalytic treatment of industrial sewage, in particular to a method capable of performing multi-choice dynamic comprehensive treatment mainly on photocatalysis for continuously flowing industrial sewage. Background technique [0002] With the rapid development of industrial production, a large amount of waste is continuously discharged into nature, which makes the living environment of human beings worse and worse, and the problem of water environment pollution is particularly serious. Wastewater contains a large number of organic pollutants, many of which are difficult to biodegrade, such as phenols, polychlorinated biphenyls and polycyclic aromatic hydrocarbons. Their biological toxicity is relatively high, which seriously threatens human health and life. [0003] Photocatalytic treatment of sewage has become a hot spot in recent years due to its advantages of high efficiency and energy saving. However, curr...
Claims
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Application Information
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