CN111423038B - Photocatalysis membrane separation integral type coupling waste water treatment device - Google Patents
Photocatalysis membrane separation integral type coupling waste water treatment device Download PDFInfo
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- CN111423038B CN111423038B CN202010181675.6A CN202010181675A CN111423038B CN 111423038 B CN111423038 B CN 111423038B CN 202010181675 A CN202010181675 A CN 202010181675A CN 111423038 B CN111423038 B CN 111423038B
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- 239000012528 membrane Substances 0.000 title claims abstract description 78
- 230000008878 coupling Effects 0.000 title claims abstract description 50
- 238000010168 coupling process Methods 0.000 title claims abstract description 50
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 50
- 238000000926 separation method Methods 0.000 title claims abstract description 31
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 27
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 17
- 238000007146 photocatalysis Methods 0.000 title claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000002351 wastewater Substances 0.000 claims abstract description 44
- 238000005192 partition Methods 0.000 claims abstract description 9
- 238000001728 nano-filtration Methods 0.000 claims abstract description 8
- 239000011941 photocatalyst Substances 0.000 claims abstract description 8
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 8
- 238000013032 photocatalytic reaction Methods 0.000 claims description 14
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- 239000007788 liquid Substances 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 10
- 238000011001 backwashing Methods 0.000 claims description 9
- 238000001471 micro-filtration Methods 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
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- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 2
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- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
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- 239000010815 organic waste Substances 0.000 description 2
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- 238000007254 oxidation reaction Methods 0.000 description 2
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/003—Wastewater from hospitals, laboratories and the like, heavily contaminated by pathogenic microorganisms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/343—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the pharmaceutical industry, e.g. containing antibiotics
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
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- Separation Using Semi-Permeable Membranes (AREA)
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Abstract
The invention discloses a photocatalytic membrane separation integrated coupling wastewater treatment device, and relates to a wastewater treatment device. The invention constructs an integrated photocatalysis-multistage membrane coupling separation device based on filter membranes with different membrane fluxes, and a light source, a micro-filter membrane baffle, an ultrafiltration membrane baffle, a nanofiltration membrane baffle and a partition plate are fixedly arranged in the device. The photocatalysis-membrane separation coupling wastewater treatment method provided by the invention effectively degrades organic pollutants, dangerous viruses and the like under the ultraviolet illumination by using the matched photocatalyst, and simultaneously purifies wastewater by membrane classification filtration to realize deep purification of water. The integrated photocatalysis-multistage membrane separation device has low manufacturing cost and easy maintenance, and can customize the corresponding size according to the wastewater treatment capacity.
Description
Technical Field
The invention relates to a wastewater treatment device, in particular to a photocatalytic membrane separation integrated coupling wastewater treatment device.
Background
With the rapid development of national economy and industry in China, the discharge of industrial water and domestic water in China is gradually increased year by year, so that natural water is polluted, harm is brought to human bodies, the pollution also becomes a main influence factor for hindering the economic development in China, and how to effectively prevent and treat polluted water resources is the key point in the current environmental protection field.
The photocatalytic technology is used as an advanced oxidation technology, almost any organic matter can be directly mineralized into inorganic micromolecules, the degradation reaction can be carried out at normal temperature and normal pressure, and the photocatalytic technology is widely used for treating organic wastewater difficult to be biochemically degraded and wastewater containing dangerous viruses, such as printing and dyeing wastewater, pharmaceutical factory wastewater, wastewater containing antibiotics, hospital wastewater and the like which are easy to cause the inactivation of sludge of biochemical systems of sewage treatment plants. When the technology is applied to the treatment of organic wastewater difficult to degrade at present, the problems of difficult recovery due to small photocatalyst particle size and breakage, secondary pollution due to incomplete oxidative degradation of organic waste and the like still exist, the wide application of the technology is severely limited, and a proper catalyst recovery measure and a method for completely oxidatively degrading the organic waste are urgently needed to be found.
Membrane separation technology is a new type of separation technology that has rapidly developed in recent years. The membrane separation process generally has no phase change and secondary pollution, can be continuously operated at normal temperature, and has the advantages of low energy consumption, small equipment volume, convenient operation, easy large-scale amplification and the like. Currently, membrane separation technology has been widely used in the field of water treatment, such as seawater desalination, brackish water utilization, sewage treatment, and the like. In the aspect of sewage treatment, the membrane flux is reduced due to complex sewage components and partial pollutants adsorbed on the surface of the separation membrane, the membrane is difficult to backwash, the service life of the membrane is greatly shortened, and the problem that the membrane pollution is reduced is solved or reduced.
The difficult problem can be effectively solved by coupling the photocatalysis technology and the membrane separation technology to treat the organic wastewater difficult to be biochemically degraded. The photocatalysis-membrane separation coupling technology not only can keep the strong oxidation degradation capability of photocatalysis and the process characteristics of membrane separation, such as selective permeation of micromolecule degradation products, blockage of macromolecular organic pollutants, small equipment volume, convenient operation, easy large-scale amplification and the like, but also can generate a series of synergistic effects. On one hand, the photocatalyst carries out oxidative degradation on organic pollutants, the membrane selectively permeates water and degraded micromolecular pollutants, untreated macromolecular pollutants and some macromolecular intermediate products are blocked, the retention time of the untreated pollutants and the macromolecular intermediate products in the photocatalytic reactor is prolonged, and the photocatalytic degradation rate of the pollutants is improved; on the other hand, the photocatalysis-membrane separation coupling technology can effectively improve the problem of membrane flux reduction caused by membrane pollution.
Disclosure of Invention
The invention aims to provide a photocatalytic membrane separation integrated coupling wastewater treatment device, which performs photocatalytic-membrane separation coupling treatment on pretreated wastewater, exerts the synergistic effect of a photocatalytic technology and a membrane separation technology, has the economic and technical advantages of low manufacturing cost, low energy consumption, good purification effect, less maintenance in the use process and long effective treatment time, and can be widely applied to the deep purification of printing and dyeing wastewater, pharmaceutical factory wastewater, wastewater containing antibiotics, hospital wastewater, wastewater containing dangerous viruses and other organic wastewater.
The purpose of the invention is realized by the following technical scheme:
a photocatalysis membrane separation integrated coupling wastewater treatment device comprises a liquid storage tank, a water pump, an integrated coupling device, a water outlet tank, an air compressor, a solenoid valve, a flowmeter, a pressure gauge and a connecting pipeline, wherein pretreated wastewater in the liquid storage tank enters the integrated coupling device through the water pump, and the treated wastewater reaches the standard through sampling detection and then enters the water outlet tank through the water pump; the bottom of the integrated coupling device is provided with an aeration hole, aeration is carried out through an air compressor, and an aeration pipeline is connected with an electromagnetic valve and a flowmeter; a bypass and a loop pipeline are arranged between the liquid storage tank and the integrated coupling device and are used for communicating the electromagnetic valve and the flowmeter, the bypass pipeline is used for releasing pressure and regulating and controlling inflow of water when the water pump is started and stopped, and the loop pipeline enables wastewater which does not reach the standard in the integrated coupling device to flow back to the liquid storage tank; a light source assembly, a plate type filter membrane assembly and a partition plate are arranged in the integrated coupling device, and the light source assembly is arranged in the center of the integrated coupling device; the shell of the integrated coupling device is made of stainless steel or polytetrafluoroethylene, the inner wall of the device is provided with an opening groove, and the opening groove on the outer surface of the quartz glass sleeve in the light source assembly form 180 degrees, so that the integrated coupling device is used for inserting the plate-type filter membrane assembly and the partition plate.
The utility model provides a photocatalysis membrane separation integral type coupling processing effluent plant, micro-filtration membrane baffle, milipore filter baffle, receive filter membrane baffle and baffle mutually become 90 degrees contained angles and stand upright in integral type coupling device perpendicularly.
The photocatalytic membrane separation integrated coupling wastewater treatment device comprises a light source assembly and a light source assembly, wherein the light source assembly comprises a quartz glass sleeve and an ultraviolet lamp tube.
The photocatalytic membrane separation integrated coupling wastewater treatment device is characterized in that a water outlet pipeline and a backwashing pipeline are arranged between the water outlet tank and the integrated coupling device, a water pump is communicated in the pipelines, and the pipelines are connected with an electromagnetic valve, a flowmeter and a pressure gauge.
The invention has the advantages and effects that:
1. the integrated coupling device can carry out graded membrane separation on the wastewater through the microfiltration membrane baffle, the ultrafiltration membrane baffle and the nanofiltration membrane baffle.
2. In the integrated coupling device, aiming at different degradation effects of different photocatalysts on different pollutants, matched photocatalysts are added in three photocatalytic areas according to components of wastewater, so that the optimization of the photocatalytic effect is achieved.
3. The light source in the integrated coupling device is positioned in the center of the device, so that illumination is provided for 3 photocatalytic areas, and the electric energy consumption is saved.
4. The photocatalysis-membrane separation wastewater device provided by the invention has the advantages of high degradation efficiency, low equipment cost and low energy consumption, and can be effectively applied to organic wastewater which is difficult to be biochemically degraded, such as printing and dyeing wastewater, pharmaceutical factory wastewater, wastewater containing antibiotics, hospital wastewater, wastewater containing dangerous viruses and the like.
Drawings
FIG. 1 is a schematic view of a process flow of the present invention for treating wastewater by photocatalytic-membrane separation;
FIG. 2 is a schematic diagram of the various areas through which wastewater flows in the integrated coupling device of the present invention;
FIG. 3 is a schematic view of a light source module according to the present invention.
The reference signs are: the device comprises a liquid storage tank 1, a water pump 2, an integrated coupling device 3, a water outlet tank 4, an air compressor 5, an electromagnetic valve 6, a flowmeter 7, a pressure gauge 8, a light source assembly 9, a microfiltration membrane baffle 10, an ultrafiltration membrane baffle 11, a nanofiltration membrane baffle 12, a partition plate 13, a photocatalytic reaction zone 14, a photocatalytic reaction zone 15, a photocatalytic reaction zone two, a photocatalytic reaction zone three, a sampling detection and water outlet zone 17, an ultraviolet lamp 18 and a quartz glass sleeve 19.
Detailed Description
The present invention will be described in detail with reference to the embodiments shown in the drawings.
The invention relates to a photocatalysis-membrane separation wastewater treatment method and an integrated coupling device. After wastewater treated by treatment facilities such as a grating, a screen, a grit chamber, a sand-water separator and the like enters a liquid storage tank, the wastewater is pumped into an integrated coupling device through a water pump, and the inflow rate is regulated and controlled through a set bypass pipeline. Among the integral type coupling device, microfiltration membrane baffle, milipore filter baffle, receive filter membrane baffle and baffle divide into four parts with the device to the baffle is the beginning, and according to the first three parts of clockwise for the photocatalytic reaction district, the fourth part is sampling test and goes out the water zone. Aeration holes are formed in the bottoms of the three photocatalytic reaction zones, photocatalysts with different photocatalytic performances are added according to requirements, and wastewater sequentially flows through the microfiltration membrane baffle, the ultrafiltration membrane baffle and the nanofiltration membrane baffle and then enters the sampling detection and water outlet zone. The waste water reaching the discharge standard after sampling detection is pumped into the water outlet tank by the water outlet pump, and the waste water not reaching the discharge standard can flow back to the liquid storage tank through the loop pipeline. After the device operates for a period of time, part of photocatalyst is loaded on the filter membrane, the membrane flux is reduced, the backwashing pump can be started at the moment, and part of treated wastewater is pumped into the filter membrane through the backwashing pipeline to perform backwashing on the filter membrane, so that the service life of the filter membrane is prolonged.
Waste water in the liquid storage tank 1 is firstly pumped into one of photocatalytic reaction areas 14 in the integrated coupling device through a water pump 2, and then is subjected to photocatalytic reaction under the aeration of an air compressor 5 and the irradiation of a light source assembly 9 in the area, so that macromolecular pollutants are degraded by photocatalysis; middle and small molecular pollutants enter the second 15 of the photocatalytic reaction area through the microfiltration membrane baffle 11, and larger molecular pollutants are degraded by photocatalysis in the area through aeration and photocatalytic reaction; the micromolecular pollutants enter a third 16 photocatalytic reaction area through an ultrafiltration membrane baffle plate 11, and are degraded by photocatalysis in the area through aeration and photocatalytic reaction; the waste water filtered by the nanofiltration membrane baffle 12 enters a sampling detection and water outlet area 17, the waste water reaching the detection standard is pumped into a water outlet tank 4 through a water pump 2, and the waste water not reaching the detection standard flows back to the liquid storage tank through a loop pipeline. After the device runs for a period of time, the backwashing operation is carried out on the filter membrane through a water pump arranged in a backwashing pipeline.
An electromagnetic valve 6 and a flowmeter 7 are arranged in the aeration pipeline and are used for aeration flow in the air; an electromagnetic valve 6 is arranged in the bypass pipeline and used for pressure relief and controlling the flow of inlet water; an electromagnetic valve 6, a flowmeter 7 and a pressure gauge 8 are arranged in the water outlet pipeline and used for controlling the water outlet flow and monitoring the pressure; an electromagnetic valve 6 and a pressure gauge 8 are arranged in the backwashing pipeline and used for controlling the backwashing water flow pressure.
Claims (4)
1. A photocatalysis membrane separation integrated coupling wastewater treatment device comprises a liquid storage tank, a water pump, an integrated coupling device, a water outlet tank, an air compressor, an electromagnetic valve, a flowmeter, a pressure gauge and a connecting pipeline, and is characterized in that pretreated wastewater in the liquid storage tank enters the integrated coupling device through the water pump, and the treated wastewater reaches the standard through sampling detection and then enters the water outlet tank through the water pump; the bottom of the integrated coupling device is provided with an aeration hole, aeration is carried out through an air compressor, and an aeration pipeline is connected with an electromagnetic valve and a flowmeter; a bypass and a loop pipeline are arranged between the liquid storage tank and the integrated coupling device and are used for communicating the electromagnetic valve and the flowmeter, the bypass pipeline is used for releasing pressure and regulating and controlling inflow of water when the water pump is started and stopped, and the loop pipeline enables wastewater which does not reach the standard in the integrated coupling device to flow back to the liquid storage tank; a light source assembly, a plate type filter membrane assembly and a partition plate are arranged in the integrated coupling device, and the light source assembly is arranged in the center of the integrated coupling device; the shell of the integrated coupling device is made of stainless steel or polytetrafluoroethylene, the inner wall of the device is provided with a notch which forms an angle of 180 degrees with the notch on the outer surface of the quartz glass sleeve in the light source component and is used for inserting the plate type filter membrane component and the partition plate; in the integrated coupling device, the microfiltration membrane baffle, the ultrafiltration membrane baffle, the nanofiltration membrane baffle and the partition plate divide the device into four parts, the partition plate is taken as the starting point, the first three parts in the clockwise direction are taken as a photocatalytic reaction area, and the fourth part is taken as a sampling detection and water outlet area; aeration holes are formed in the bottoms of the three photocatalytic reaction zones, photocatalysts with different photocatalytic performances are added according to requirements, and wastewater sequentially flows through the microfiltration membrane baffle, the ultrafiltration membrane baffle and the nanofiltration membrane baffle and then enters the sampling detection and water outlet zone.
2. The photocatalytic membrane separation integrated coupling wastewater treatment device as recited in claim 1, wherein the microfiltration membrane baffle, the ultrafiltration membrane baffle, the nanofiltration membrane baffle and the partition plate are vertically erected in the integrated coupling device at an included angle of 90 degrees.
3. The photocatalytic membrane separation integrated coupling wastewater treatment device as recited in claim 1, wherein the light source assembly comprises a quartz glass sleeve and an ultraviolet lamp tube.
4. The photocatalytic membrane separation integrated coupling wastewater treatment device as claimed in claim 1, wherein a water outlet pipeline and a backwashing pipeline are arranged between the water outlet tank and the integrated coupling device, and a water pump is communicated with the pipelines and is connected with an electromagnetic valve, a flowmeter and a pressure gauge.
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| CN202010181675.6A CN111423038B (en) | 2020-03-16 | 2020-03-16 | Photocatalysis membrane separation integral type coupling waste water treatment device |
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| CN111423038B true CN111423038B (en) | 2022-04-12 |
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| CN112299520B (en) * | 2020-11-16 | 2023-06-23 | 武汉工程大学 | Automatic continuous eutrophication water body treatment device |
| CN112624451A (en) * | 2020-12-04 | 2021-04-09 | 沈阳化工大学 | Photocatalytic multistage membrane separation coupling sewage treatment system |
| CN113003815B (en) * | 2021-03-19 | 2022-05-17 | 山东建筑大学 | Continuous photocatalytic ultrafiltration cup, preparation method of fiber ball and preparation method of ultrafiltration membrane |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040096112A (en) * | 2003-05-07 | 2004-11-16 | 주식회사 효성 | Water Purification Apparatus containing a Photo-catalyzed oxidation part and a Membrane-filtering part |
| CN1686846A (en) * | 2005-03-14 | 2005-10-26 | 天津大学 | Continual immersion type processing unit of photocatalysis membrane for removing natural organic matter in water |
| CN205473118U (en) * | 2016-01-19 | 2016-08-17 | 山西大同大学 | Photocatalysis sewage purifying treatment system |
| 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 |
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| JP2002301378A (en) * | 2001-04-04 | 2002-10-15 | Mitsui Eng & Shipbuild Co Ltd | Photocatalyst module, method for producing the same and photocatalytic reactor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040096112A (en) * | 2003-05-07 | 2004-11-16 | 주식회사 효성 | Water Purification Apparatus containing a Photo-catalyzed oxidation part and a Membrane-filtering part |
| CN1686846A (en) * | 2005-03-14 | 2005-10-26 | 天津大学 | Continual immersion type processing unit of photocatalysis membrane for removing natural organic matter in water |
| CN205473118U (en) * | 2016-01-19 | 2016-08-17 | 山西大同大学 | Photocatalysis sewage purifying treatment system |
| 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 |
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