CN206680241U - A kind of device that waste water is handled using photocatalysis membrana isolation technics - Google Patents
A kind of device that waste water is handled using photocatalysis membrana isolation technics Download PDFInfo
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- 230000001699 photocatalysis Effects 0.000 title claims abstract description 39
- 239000002351 wastewater Substances 0.000 title claims abstract description 15
- 238000007146 photocatalysis Methods 0.000 title claims 9
- 238000002955 isolation Methods 0.000 title claims 4
- 239000012528 membrane Substances 0.000 claims abstract description 69
- 239000000919 ceramic Substances 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 238000005273 aeration Methods 0.000 claims abstract description 9
- 239000000523 sample Substances 0.000 claims abstract description 8
- 238000005276 aerator Methods 0.000 claims abstract description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 8
- 230000007774 longterm Effects 0.000 abstract description 5
- 238000004140 cleaning Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003054 catalyst Substances 0.000 description 9
- 230000015556 catabolic process Effects 0.000 description 6
- 238000006731 degradation reaction Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 239000011941 photocatalyst Substances 0.000 description 4
- 238000013032 photocatalytic reaction Methods 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 230000036632 reaction speed Effects 0.000 description 3
- 239000011149 active material Substances 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 229920005597 polymer membrane Polymers 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- GEIAQOFPUVMAGM-UHFFFAOYSA-N ZrO Inorganic materials [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
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- Treatment Of Water By Oxidation Or Reduction (AREA)
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Abstract
一种利用光催化膜分离技术处理废水的装置，包括光催化反应器，所述光催化反应器外层设有温控夹套，光催化反应器底部设有连接曝气机的曝气板，曝气板上方设有多个竖直放置的中空平板陶瓷膜，中空平板陶瓷膜两侧设有多个紫外灯管，所述中空平板陶瓷膜上端设有与真空表和抽吸泵连接的吸嘴口，所述光催化反应器内还设有多个液位探头，液位探头连接液位控制器，所述液位控制器经离心泵连接废水罐。本装置使用板式陶瓷膜和液位控制器可以获得非常强的膜抗污染性能及较高的产水率，有效降低板式陶瓷膜清洗工艺的难度，延长了膜的运行周期和装置的长期连续稳定运行，充分发挥无机陶瓷膜寿命长的优势。
A device for treating wastewater using photocatalytic membrane separation technology, comprising a photocatalytic reactor, the outer layer of the photocatalytic reactor is provided with a temperature control jacket, and the bottom of the photocatalytic reactor is provided with an aeration plate connected to an aerator, There are multiple vertically placed hollow flat ceramic membranes on the top of the aeration plate, and multiple ultraviolet lamp tubes are arranged on both sides of the hollow flat ceramic membranes. There are multiple liquid level probes in the photocatalytic reactor, the liquid level probes are connected to the liquid level controller, and the liquid level controller is connected to the waste water tank through the centrifugal pump. The device uses a plate ceramic membrane and a liquid level controller to obtain very strong membrane anti-pollution performance and high water production rate, effectively reduces the difficulty of the plate ceramic membrane cleaning process, prolongs the operating cycle of the membrane and the long-term continuous stability of the device Running, give full play to the advantage of long service life of inorganic ceramic membrane.
Description
技术领域technical field
本实用新型涉及一种利用光催化膜分离技术处理废水的装置。The utility model relates to a device for treating waste water by using photocatalytic membrane separation technology.
背景技术Background technique
纳米TiO2在紫外光照射下能光生空穴，可产生非常强的氧化性能，可高效降解多种有机污染物，具有耐酸碱、无毒、价廉、应用范围广等诸多优点，已经引起了国内外环境领域许多学者的浓厚兴趣，特别是其悬浮式光催化氧化工艺技术因其催化降解效率高而得到普遍重视，但该技术中催化剂粒子难以回收利用，较有效的方法之一是利用分离膜的截留作用回收悬浮态催化剂。膜分离技术是近年迅速发展起来的一种新型分离技术，具有占地面积小、无相变及分离效果高等诸多优点。将光催化技术与膜分离技术集成，不仅能保持光催化技术降解高含量、难降解污染物的无选择性、反应速度快及降解彻底等优点，而且分离膜可有效回收纳米级催化剂，保持反应器中催化剂浓度恒定及其高效催化特性。Nano-TiO2 can photogenerate holes under ultraviolet light irradiation, which can produce very strong oxidation performance, and can efficiently degrade various organic pollutants. It has many advantages such as acid and alkali resistance, non-toxicity, low price, and wide application range. The strong interest of many scholars in the field of environment at home and abroad, especially its suspension photocatalytic oxidation process technology has been widely valued because of its high catalytic degradation efficiency, but the catalyst particles in this technology are difficult to recycle, one of the more effective methods is to use separation The interception effect of the membrane recovers the suspended catalyst. Membrane separation technology is a new type of separation technology developed rapidly in recent years. It has many advantages such as small footprint, no phase change and high separation effect. The integration of photocatalytic technology and membrane separation technology can not only maintain the advantages of photocatalytic technology, such as high content of degradation, non-selectivity of refractory pollutants, fast reaction speed and thorough degradation, but also the separation membrane can effectively recover nano-scale catalysts and keep the reaction The concentration of catalyst in the device is constant and its high-efficiency catalytic characteristics.
目前，国内外将光催化技术和膜分离技术集成已有较多的研究，根据催化剂的使用形态，可把光催化剂负载在载体上形成固定式光催化膜反应器，光催化剂为悬浮态组成悬浮型光催化膜反应器，该反应器装置根据光源位置不同又可以组成为内置式（或浸没式）和外置式，即膜组件浸没在悬浆光催化反应体系中或置于体系之外而独立运行的工艺装置。在浸没式光催化膜反应器中使用较多是有机高分子聚合膜，如公开号为CN 105217721A及CN 104843916A中采用中空纤维及帘式有机膜，有机高分子聚合膜价格相对低廉，但在紫外光照射下容易老化或发生降解作用，其使用寿命短；也有使用管式无机膜，如CN204162465U采用了复合陶瓷分离膜和光催化氧化技术组合，但是对于管式无机陶瓷膜而言，紫外光照射和膜表面接触不如平板膜直接，光照射的膜面积较少，从而影响了光催化氧化对膜面污染物的降解作用。At present, there have been many studies on the integration of photocatalytic technology and membrane separation technology at home and abroad. According to the use form of the catalyst, the photocatalyst can be loaded on the carrier to form a fixed photocatalytic membrane reactor. The photocatalyst is suspended to form a suspended state. Type photocatalytic membrane reactor, the reactor device can be composed of built-in (or submerged) and external according to the position of the light source, that is, the membrane module is immersed in the suspension photocatalytic reaction system or placed outside the system and independent Operating process unit. In the submerged photocatalytic membrane reactor, organic polymer polymer membranes are mostly used. For example, the publication numbers CN 105217721A and CN 104843916A adopt hollow fiber and curtain organic membranes. The price of organic polymer polymer membranes is relatively low, but in ultraviolet It is easy to age or degrade under light irradiation, and its service life is short; there are also tubular inorganic membranes, such as CN204162465U, which adopts the combination of composite ceramic separation membrane and photocatalytic oxidation technology, but for tubular inorganic ceramic membranes, ultraviolet light irradiation and The surface contact of the membrane is not as direct as that of the flat membrane, and the membrane area irradiated by light is less, which affects the degradation of pollutants on the membrane surface by photocatalytic oxidation.
实用新型内容Utility model content
本实用新型其目的就在于提供一种利用光催化膜分离技术处理废水的装置，解决了管式无机陶瓷膜存在紫外光照射和膜表面接触直接，光照射的膜面积较少，从而影响了光催化氧化对膜面污染物的降解作用的问题，具有光催化氧化降解率高，安全无残留、无机膜抗污染性强，连续稳定运行等特点。The purpose of this utility model is to provide a device for treating waste water by using photocatalytic membrane separation technology, which solves the problem that the tubular inorganic ceramic membrane has ultraviolet light irradiation and direct contact with the membrane surface, and the membrane area irradiated by light is small, which affects the light. The problem of catalytic oxidation on the degradation of pollutants on the membrane surface has the characteristics of high photocatalytic oxidation degradation rate, safety and no residue, strong anti-pollution of inorganic membranes, and continuous and stable operation.
实现上述目的而采取的技术方案，一种利用光催化膜分离技术处理废水的装置，包括光催化反应器，所述光催化反应器外层设有温控夹套，光催化反应器底部设有连接曝气机的曝气板，曝气板上方设有多个竖直放置的中空平板陶瓷膜，中空平板陶瓷膜两侧设有多个紫外灯管，所述中空平板陶瓷膜上端设有与真空表和抽吸泵连接的吸嘴口，所述光催化反应器内还设有多个液位探头，液位探头连接液位控制器，所述液位控制器经离心泵连接废水罐。The technical solution adopted to achieve the above purpose is a device for treating wastewater using photocatalytic membrane separation technology, including a photocatalytic reactor, the outer layer of the photocatalytic reactor is provided with a temperature control jacket, and the bottom of the photocatalytic reactor is provided with Connect the aeration plate of the aerator, above the aeration plate, there are multiple vertically placed hollow flat ceramic membranes. The vacuum gauge is connected to the suction nozzle of the suction pump. The photocatalytic reactor is also provided with a plurality of liquid level probes. The liquid level probes are connected to a liquid level controller, and the liquid level controller is connected to a waste water tank through a centrifugal pump.
有益效果Beneficial effect
与现有技术相比本实用新型具有以下优点。Compared with the prior art, the utility model has the following advantages.
本实用新型的优点在于，在该装置中催化剂粒子为悬浮态，紫外光不仅可以充分辐射到催化剂活性物上，还能充分辐射到板式陶瓷膜表面，提高紫外光的利用率，有效地增加板式陶瓷膜的过滤面积，在紫外光照射作用下，可使沉积膜表面的有机物污染物得到及时降解，降低膜污染，从而获得非常强的抗污染性能及较高的产水率，能有效降低板式陶瓷膜清洗工艺的难度，延长板式陶瓷膜的运行周期；由于无机膜自身具有较强的抗氧化作用，板式陶瓷膜经过紫外光长期照射不会发生老化或降解作用，可以长期运行；利用温控夹套可以有效控制反应器中溶液温度，调节合适的光催化反应速度；通过液位控制器可以较好的控制反应器中的液位，使该反应器装置实现长期连续稳定运行；板式陶瓷膜清洗及替换也十分简单方便。The utility model has the advantage that, in the device, the catalyst particles are in a suspended state, and the ultraviolet light can not only fully radiate to the catalyst active material, but also fully radiate to the surface of the plate ceramic membrane, thereby improving the utilization rate of the ultraviolet light and effectively increasing the plate type. The filtration area of the ceramic membrane, under the action of ultraviolet light, can degrade the organic pollutants on the surface of the deposited membrane in time and reduce the membrane pollution, thereby obtaining very strong anti-pollution performance and high water production rate, which can effectively reduce the plate type The difficulty of ceramic membrane cleaning process prolongs the operating cycle of the plate ceramic membrane; due to the strong anti-oxidation effect of the inorganic membrane itself, the plate ceramic membrane will not age or degrade after long-term exposure to ultraviolet light, and can run for a long time; use temperature control The jacket can effectively control the temperature of the solution in the reactor and adjust the appropriate photocatalytic reaction speed; the liquid level in the reactor can be better controlled through the liquid level controller, so that the reactor device can achieve long-term continuous and stable operation; the plate ceramic membrane Cleaning and replacement are also very simple and convenient.
附图说明Description of drawings
下面结合附图对本实用新型作进一步详述。Below in conjunction with accompanying drawing, the utility model is described in further detail.
图1为本实用新型的结构示意图。Fig. 1 is the structural representation of the utility model.
具体实施方式detailed description
本装置包括光催化反应器11，如图1所示，所述光催化反应器11外层设有温控夹套10，光催化反应器11底部设有连接曝气机12的曝气板3，曝气板3上方设有多个竖直放置的中空平板陶瓷膜4，中空平板陶瓷膜4两侧设有多个紫外灯管5，所述中空平板陶瓷膜4上端设有与真空表8和抽吸泵9连接的吸嘴口13，所述光催化反应器11内还设有多个液位探头6，液位探头6连接液位控制器7，所述液位控制器7经离心泵2连接废水罐1。The device includes a photocatalytic reactor 11, as shown in Figure 1, the outer layer of the photocatalytic reactor 11 is provided with a temperature control jacket 10, and the bottom of the photocatalytic reactor 11 is provided with an aeration plate 3 connected to an aerator 12 , the top of the aeration plate 3 is provided with a plurality of vertically placed hollow flat ceramic membranes 4, the two sides of the hollow flat ceramic membrane 4 are provided with a plurality of ultraviolet lamps 5, and the upper end of the hollow flat ceramic membrane 4 is provided with a vacuum gauge 8 The suction nozzle mouth 13 connected with the suction pump 9, the photocatalytic reactor 11 is also provided with a plurality of liquid level probes 6, the liquid level probes 6 are connected to the liquid level controller 7, and the liquid level controller 7 is centrifuged Pump 2 is connected to waste water tank 1.
所述光催化反应器11内交替竖直放入至少一个中空平板陶瓷膜4及至少两个紫外灯管5，确保中空平板陶瓷膜4每一面都可以受到紫外光源的辐射。In the photocatalytic reactor 11, at least one hollow flat ceramic membrane 4 and at least two ultraviolet lamp tubes 5 are alternately placed vertically to ensure that each side of the hollow flat ceramic membrane 4 can be irradiated by the ultraviolet light source.
所述中空平板陶瓷膜4为Al2O3、TiO2或ZrO2材料制成。The hollow flat ceramic membrane 4 is made of Al 2 O 3 , TiO 2 or ZrO 2 .
本装置工作时，如图1所示，先向光催化反应器11中投入适量的二氧化钛光催化剂，再启动离心泵2向光催化反应器11中输送废水溶液，当液位高于中空平板陶瓷膜4和紫外灯管5时，停止离心泵1，再开启曝气机12通过曝气板3向溶液曝气15分钟，进行静吸附，再开启紫外灯管5电源，在紫外灯光源照射下进行光催化降解处理，再开启抽吸泵9，进行低负压抽吸处理，渗透液透过膜壁进入膜内腔，再从吸嘴口13流出，通过抽吸泵9转速控制真空度，真空度通过真空表8显示，废水中较大分子量污染物及光催化剂粒子被板式陶瓷膜截留，可以提高污染物水力停留时间，催化剂一直留在光催化反应器11中反复利用。随着过滤的进行液位将下降，当液位低于最下位置的液位探测头6 时，离心泵2就自动开启，离心泵2输入废水的流量高于渗透液的抽吸速度，当液位达到最上位置的液位探测头6 时，离心泵2就自动停止。在抽吸泵9抽吸作用下，当液位再次低于最下位置的液位探测头6 时，离心泵2再次自动开启，如此反复。另外再通过温控夹套10合理控制反应器中溶液的温度，通过反应温度及膜抽吸速率，控制光催化反应速率，使溶液中污染浓度处在合适的范围内，使膜分离单元在最优工艺条件下运行。当板式无机陶瓷膜达到一定污染程度时，也就是真空表8读数达到设定值时，反转抽吸泵9进行在线反冲处理1分钟，再正转抽吸泵9再次实现负压抽吸得到渗透液。When the device was working, as shown in Figure 1, an appropriate amount of titanium dioxide photocatalyst was dropped into the photocatalytic reactor 11, and then the centrifugal pump 2 was started to transport the wastewater solution to the photocatalytic reactor 11. When the liquid level was higher than that of the hollow flat ceramic When the membrane 4 and the ultraviolet lamp tube 5 are in place, stop the centrifugal pump 1, and then turn on the aerator 12 to aerate the solution through the aeration plate 3 for 15 minutes to carry out static adsorption, then turn on the power supply of the ultraviolet lamp tube 5, and under the irradiation of the ultraviolet light source, Perform photocatalytic degradation treatment, then turn on the suction pump 9, and perform low negative pressure suction treatment. The permeate penetrates the membrane wall and enters the inner cavity of the membrane, and then flows out from the suction nozzle port 13. The vacuum degree is controlled by the speed of the suction pump 9. The degree of vacuum is shown by the vacuum gauge 8. Larger molecular weight pollutants and photocatalyst particles in the wastewater are intercepted by the plate ceramic membrane, which can increase the hydraulic retention time of the pollutants. The catalyst remains in the photocatalytic reactor 11 for repeated use. As the filtration proceeds, the liquid level will drop. When the liquid level is lower than the liquid level detection head 6 at the lowest position, the centrifugal pump 2 will be automatically opened, and the flow rate of the wastewater input by the centrifugal pump 2 will be higher than the suction speed of the permeate. When the liquid level reaches the liquid level detection head 6 at the uppermost position, the centrifugal pump 2 stops automatically. Under the suction effect of the suction pump 9, when the liquid level is lower than the liquid level detection head 6 at the lowest position again, the centrifugal pump 2 is automatically turned on again, and so on. In addition, the temperature of the solution in the reactor is reasonably controlled by the temperature control jacket 10, and the photocatalytic reaction rate is controlled by the reaction temperature and the membrane suction rate, so that the pollution concentration in the solution is in a suitable range, and the membrane separation unit is at the optimum level. Operate under optimal process conditions. When the plate-type inorganic ceramic membrane reaches a certain degree of pollution, that is, when the reading of the vacuum gauge 8 reaches the set value, reverse the suction pump 9 for online recoil treatment for 1 minute, and then turn the suction pump 9 forward to realize negative pressure suction again Obtain permeate.
在该反应器工艺装置中，紫外光不仅可以充分辐射到催化剂活性物上，还能充分辐射到板式陶瓷膜表面，充分提高紫外光的利用率，有效地增加板式陶瓷膜的过滤面积，在紫外光照射作用下，可使沉积膜表面的有机物污染物得到及时降解，降低膜污染，获得了非常强的膜抗污染性能及较高的产水率，能有效降低板式陶瓷膜清洗工艺的难度，延长板式陶瓷膜的运行周期；由于无机膜自身具有较强的抗氧化作用，板式陶瓷膜经过紫外光长期照射不会发生老化或降解作用，可以长期运行；利用温控夹套可以有效控制反应器中溶液温度，调节合适的光催化反应速度；通过液位控制器可以较好的控制反应器中的液位，使该反应器装置实现长期连续稳定运行。In this reactor process device, ultraviolet light can not only fully radiate to the catalyst active material, but also fully radiate to the surface of the plate ceramic membrane, fully improve the utilization rate of ultraviolet light, and effectively increase the filtration area of the plate ceramic membrane. Under the action of light irradiation, the organic pollutants on the surface of the deposited film can be degraded in time, reducing membrane pollution, obtaining very strong membrane anti-pollution performance and high water production rate, which can effectively reduce the difficulty of cleaning the plate ceramic membrane. Extend the operating cycle of the plate ceramic membrane; due to the strong anti-oxidation effect of the inorganic membrane itself, the plate ceramic membrane will not age or degrade after long-term exposure to ultraviolet light, and can run for a long time; the temperature control jacket can be used to effectively control the reactor The temperature of the medium solution is adjusted to adjust the appropriate photocatalytic reaction speed; the liquid level in the reactor can be better controlled through the liquid level controller, so that the reactor device can achieve long-term continuous and stable operation.
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| CN201720353281.8U Expired - Fee Related CN206680241U (en) | 2017-04-06 | 2017-04-06 | A kind of device that waste water is handled using photocatalysis membrana isolation technics |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108101281A (en) * | 2017-12-20 | 2018-06-01 | 上海康盛环保能源科技有限公司 | A kind of catalytic ceramics membrane reactor |
| CN108423900A (en) * | 2018-05-23 | 2018-08-21 | 江西省科学院能源研究所 | A kind of double film photocatalytic reactors for wastewater treatment |
| CN113185044A (en) * | 2021-06-09 | 2021-07-30 | 南京理工大学 | System and method for advanced treatment of chemical industry wastewater through catalytic separation reaction |
| CN113880229A (en) * | 2021-09-28 | 2022-01-04 | 中铁第一勘察设计院集团有限公司 | System for treating oily wastewater by using flat ceramic membrane |
| CN116253468A (en) * | 2023-03-01 | 2023-06-13 | 中建三局绿色产业投资有限公司 | A photocatalytic oxidation film system applied to sewage treatment and sewage treatment method |
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2017
- 2017-04-06 CN CN201720353281.8U patent/CN206680241U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108101281A (en) * | 2017-12-20 | 2018-06-01 | 上海康盛环保能源科技有限公司 | A kind of catalytic ceramics membrane reactor |
| CN108423900A (en) * | 2018-05-23 | 2018-08-21 | 江西省科学院能源研究所 | A kind of double film photocatalytic reactors for wastewater treatment |
| CN113185044A (en) * | 2021-06-09 | 2021-07-30 | 南京理工大学 | System and method for advanced treatment of chemical industry wastewater through catalytic separation reaction |
| CN113880229A (en) * | 2021-09-28 | 2022-01-04 | 中铁第一勘察设计院集团有限公司 | System for treating oily wastewater by using flat ceramic membrane |
| CN116253468A (en) * | 2023-03-01 | 2023-06-13 | 中建三局绿色产业投资有限公司 | A photocatalytic oxidation film system applied to sewage treatment and sewage treatment method |
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