CN106809995B - Capillary-like wastewater treatment and desalination equipment and method - Google Patents
Capillary-like wastewater treatment and desalination equipment and method Download PDFInfo
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- CN106809995B CN106809995B CN201510841892.2A CN201510841892A CN106809995B CN 106809995 B CN106809995 B CN 106809995B CN 201510841892 A CN201510841892 A CN 201510841892A CN 106809995 B CN106809995 B CN 106809995B
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Abstract
The invention discloses a capillary tube wastewater treatment and desalination device and a method, wherein capillary tubes which are orderly arranged and uniformly arranged are arranged in the device and consist of a concentrated water area, an immersion area, a steam-water mixing area, a top vacuum area and a clear water area; the top vacuum area is communicated with the clear water area through a capillary-like connection, and the concentrated water area is provided with a salt discharge channel and is completely isolated from the clear water area at the bottom; the external part is provided with a microwave energy and ultrasonic energy device; under the action of microwave energy and ultrasonic energy, organic matters are degraded and removed; the top of the device is provided with a vacuumizing device and a waste gas filtering device, a steam-water mixing area maintains a certain negative pressure state, a pressure difference is formed between the inside and the outside of the similar capillary tube, and water molecules enter the tube under the action of the pressure difference and flow into a clear water area; the formed concentrated water enters a concentrated water area, and the concentrated water and the precipitated salt are discharged out of the equipment through a discharge pipe; this equipment will remove organic matter and desalination system integration, all is suitable for to the high salt high concentration organic waste water of different grade type.
Description
Technical Field
The invention belongs to the field of energy conservation, environmental protection and water treatment, and particularly relates to a capillary-like wastewater treatment and desalination device and a method.
Background
The high-salinity wastewater refers to wastewater with the salt content of more than 5 percent, and not only contains higher salt, but also contains a large amount of organic compounds which are difficult to remove. The high-salt wastewater is mainly produced in the chemical production industry, and in the chemical production process, reaction products are dissolved, absorbed and washed, and chemical tail gas is absorbed, so that strong acid or strong alkali is often used for treatment to generate a large amount of acid salt or alkaline salt, and organic wastewater with high salt content is formed. In actual production, different chemical products and different production processes produce different high-salinity wastewater with different properties.
Aiming at the characteristics of high salt content and high concentration of refractory organic matters in high-salt wastewater, advanced oxidation and membrane separation are combined for treatment. The advanced oxidation method belongs to a chemical method, has obvious treatment effect on refractory organic matters and high removal rate, and commonly used advanced oxidation methods comprise Fenton reagent, electrochemical oxidation, UV, ozone, combined process thereof, photocatalysis and the like. The advanced oxidation method is mainly characterized in that HO (hydroxyl radical) is used as a main oxidant to react with organic matters, and free radicals generated in the reaction can continuously participate in the chain reaction of HO, or organic peroxide free radicals are generated and then further undergo oxidative decomposition reaction until the organic matters are degraded into final products of CO2 and H2O, so that the organic matters are completely oxidized and decomposed.
Common membrane separation technologies mainly comprise microfiltration, ultrafiltration, nanofiltration, reverse osmosis membranes, electrodialysis, dialysis and the like, the membrane separation technology has high water inlet requirement and is usually high-pressure water inlet, the COD concentration and the salt content of inlet water cannot be too high, pretreatment in the early stage is complex, energy consumption is high, and the total cost is high.
In addition, the presence of salt molecules in the high-salt organic wastewater hinders the advanced oxidation reaction to some extent, partial salts terminate the chain reaction by abstraction/HO, and the presence of organic substances makes the membrane separation technique difficult.
Disclosure of Invention
The invention aims to provide a capillary-like wastewater treatment and desalination device and a capillary-like wastewater treatment and desalination method, which mainly solve the problems of high cost and high difficulty of the conventional high-salt high-concentration organic wastewater treatment, and integrate and synchronously carry out the wastewater treatment and desalination systems so as to improve the treatment efficiency of the high-salt wastewater and reduce the wastewater treatment cost.
The technical problem to be solved by the invention can be realized by the following technical scheme:
a capillary-like wastewater treatment, desalination apparatus and method having features comprising: the inside of the equipment is provided with capillary-like tubes which are arranged orderly and uniformly; the device is internally composed of a concentrated water zone, an immersion zone, a steam-water mixing zone, a top vacuum zone and a clear water zone; the clear water area and the top vacuum area in the equipment are in a communicated state through the connection of the similar capillary, and the steam-water mixing area is completely isolated from the top vacuum area; the concentrated water zone is used for forming concentrated water and precipitated salt, and is provided with a salt discharge channel which is completely isolated from the clear water zone; a microwave energy and ultrasonic energy device is arranged outside the equipment; the top of the equipment is provided with a vacuumizing device and an exhaust gas filtering device.
Further, the capillary-like wastewater treatment and desalination apparatus of the present invention may further have the following features: the capillary-like structure is cylindrical or square, and the material of the structure is a high-molecular film material with corrosion resistance, high temperature resistance and high pressure resistance.
Further, the capillary-like wastewater treatment and desalination apparatus of the present invention may further have the following features: a grid is arranged between the immersion area and the concentrated water area, and the functions of uniform water quality, water quantity and support are achieved.
Further, the capillary-like wastewater treatment and desalination apparatus of the present invention may further have the following features: the salt discharge channel is arranged in the concentrated water area, and concentrated water and precipitated salt formed in the concentrated water area are discharged out of the equipment through the discharge pipe after being collected by the salt discharge channel.
Further, the capillary-like wastewater treatment and desalination apparatus of the present invention may further have the following features: the waste water in the immersion area is subjected to microwave energy and ultrasonic energy reaction, organic matters in the waste water are gradually degraded and removed, and meanwhile, the temperature of the waste water is continuously increased to generate a large amount of water vapor so as to form a steam-water mixing area at the upper part of the immersion area; the steam-water mixing area maintains a certain negative pressure value, and the equipment is negative pressure water inlet, so that the operation energy consumption is reduced.
Further, the capillary-like wastewater treatment and desalination apparatus of the present invention may further have the following features: the top vacuum area is in a vacuum-pumping state under the action of a vacuum-pumping device, and the negative pressure value of the top vacuum area is lower than that of the steam-water mixing area, so that a certain pressure difference is formed inside and outside the capillary tube;
the water molecules outside the quasi-capillary tube enter the quasi-capillary tube through the pressure difference between the inside and the outside of the quasi-capillary tube, and then enter the clear water area through the gravity action and the vacuum action.
Further, the capillary-like wastewater treatment and desalination apparatus of the present invention may further have the following features: and a waste gas filtering device is arranged at the top vacuum area to absorb toxic and harmful components in the ultrasonically blown gas, and the filtering material is activated carbon which is a strong adsorptive material.
Further, the capillary-like wastewater treatment and desalination apparatus of the present invention may further have the following features: the equipment shell is of a cylindrical or square structure and is of a closed structure, and the equipment shell is made of corrosion-resistant, high-temperature-resistant and high-pressure-resistant materials.
Further, the capillary-like wastewater treatment and desalination apparatus of the present invention may further comprise the following steps: after the high-salinity wastewater enters the immersion area from the water inlet pipe, organic matters in the wastewater are degraded and removed under the action of microwave energy and ultrasonic energy; the temperature of the wastewater rises, a large amount of water vapor is generated and is attached to the outer wall of the quasi-capillary; water molecules outside the quasi-capillary tube enter the quasi-capillary tube under the action of the internal and external pressure difference of the quasi-capillary tube, enter the clear water area under the action of gravity and vacuum, and are finally discharged by a clear water outlet pipe; under the action of ultrasonic energy, the blown-off gas enters the top vacuum area through the quasi-capillary tube and is exhausted by the vacuumizing device, and harmful components in the gas are absorbed and removed by the waste gas filtering device.
The invention has the beneficial effects that:
in the capillary-like wastewater treatment and desalination equipment provided by the invention, the organic matter removal system and the desalination system are integrated and can be simultaneously carried out, and compared with the conventional sewage treatment and membrane treatment, the treatment efficiency is high. The wastewater is treated by utilizing the ultrasound and the microwave simultaneously, the organic matter degradation efficiency is high, and the reaction is thorough. The water molecules are separated by utilizing the pressure difference formed inside and outside the capillary-like tube, so that the purposes of removing salt and organic matters are achieved, and no additional kinetic energy is required to be provided, therefore, the operation energy consumption of the whole system is lower. The system finally obtains clear water and strong brine with lower concentration of organic matters, which is beneficial to the subsequent further optimization treatment of the strong brine, and the part of the strong brine can be mixed with inlet water and then enters the treatment system again, thereby reducing the burden of the subsequent treatment.
The top vacuum area is communicated with the bottom clear water area through the capillary tube, and the top vacuum area is in a vacuum state, so that the clear water area at the bottom of the equipment is vacuumized to discharge water, and the energy consumption is reduced. The upper part of the immersion area is in a vacuum state, and the equipment is charged with water under negative pressure, so that the overall operation energy consumption is reduced.
The ultrasonic energy device is adopted outside the equipment, the operation of the ultrasonic device plays a role in cleaning the similar capillary, the equipment does not need to be provided with a cleaning facility, and manpower and material resources are saved. The requirement of equipment water inlet is low, and the wastewater containing different types of high-salinity and high-concentration organic matters can be treated.
Drawings
FIG. 1 is a schematic sectional view of a capillary-like wastewater treatment and desalination plant according to the present invention.
Reference numerals:
the device comprises a water inlet pipe 1, a top vacuum area 2, a steam-water mixing area 3, an immersion area 4, a clear water area 5, a capillary tube 6, a microwave energy device 7, an ultrasonic energy device 8, a clear water outlet pipe 9, a grid 10, a vacuumizing device 11, an exhaust gas filtering device 12, a concentrated water area 13, a salt discharge channel 14, a discharge pipe 15 and a device shell 16.
Detailed Description
Example 1
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic sectional view of a capillary-like wastewater treatment and desalination plant.
As shown in figure 1, the capillary-like tubes 6 which are arranged orderly and uniformly are arranged inside the capillary-like wastewater treatment and desalination equipment, the structure of the capillary-like wastewater treatment and desalination equipment is cylindrical or square, and the material of the structure is a high-molecular membrane material with corrosion resistance, high temperature resistance and high pressure resistance.
The inside of the device consists of a concentrated water area 13, an immersion area 4, a steam-water mixing area 3, a top vacuum area 2 and a clear water area 5, wherein the top vacuum area 2 and the clear water area 5 are communicated through a similar capillary tube 6, and the steam-water mixing area 3 is completely isolated from the top vacuum area 2. A grid 10 is arranged between the immersion area 4 and the concentrated water area 13, and the functions of uniform water quality, water quantity and supporting are achieved.
The concentrated water zone 13 is used for forming concentrated water and precipitated salt, and a salt discharge channel 14 is arranged below the concentrated water zone 13 and is completely isolated from the clear water zone 5.
The waste water in the immersion area 4 is subjected to microwave energy and ultrasonic energy reaction, organic matters in the waste water are gradually degraded and removed, meanwhile, the temperature of the waste water is continuously increased, a large amount of water vapor is generated, and a steam-water mixing area 3 at the upper part of the immersion area 4 is formed.
The steam-water mixing area 3 maintains a certain negative pressure value, and the equipment is negative pressure water inlet, so that the operation energy consumption is reduced. The top vacuum area 2 is in a vacuum state under the action of the vacuum-pumping device 11, and the negative pressure value of the top vacuum area 2 is lower than that of the steam-water mixing area 3, so that a certain pressure difference is formed between the inside and the outside of the capillary tube 6. Water molecules outside the quasi-capillary 6 enter the quasi-capillary 6 under the action of the pressure difference between the inside and the outside of the quasi-capillary 6, and then enter the clear water area 5 under the action of gravity and vacuum.
The microwave energy device 7 and the ultrasonic energy device 8 are arranged outside the device for carrying out the microwave energy reaction and the ultrasonic energy reaction of the wastewater. The top of the equipment is provided with a vacuum-pumping device 11 and an exhaust gas filtering device 12. By means of the vacuum-pumping device 11, a vacuum state of the top vacuum region 2 is created, while the gas is discharged. The waste gas filtering device 12 is used for absorbing toxic and harmful components in the ultrasonic blown gas, and the filtering material is activated carbon which is a strong absorbing material.
The salt discharging channel 14 is arranged in the concentrated water area 13, and concentrated water and precipitated salt in the concentrated water area 13 are collected through the salt discharging channel 14, enter the discharging pipe 15 and are finally discharged out of the equipment.
The equipment housing 16 is a cylindrical or square structure, and is a closed structure made of a material resistant to corrosion, high temperature and high pressure.
When the ultrasonic energy device 8 operates, the function of cleaning the capillary-like tube 6 is achieved, and cleaning facilities do not need to be arranged on the capillary-like tube.
The working principle of the invention is briefly described as follows:
as shown in figure 1, after high-salinity wastewater enters an immersion area 4 from a water inlet pipe 1, a large amount of active oxidation groups are generated in the wastewater under the action of microwave energy, macromolecular organic matters with complex structures are rapidly degraded into micromolecular organic matters, and meanwhile, the water temperature also rapidly rises to generate a large amount of water vapor. The organic matter structure of the wastewater with high energy is further destroyed under the action of ultrasonic energy, and the organic matter in the wastewater is decomposed into water, carbon dioxide and partial undegraded small molecular organic matter. Meanwhile, under the action of ultrasonic energy, volatile gas compounds in the wastewater are quickly blown out, enter the top vacuum area 2 through the capillary-like tube 6 and are discharged through the vacuum-pumping device, so that the compounds in the water are further removed. In addition, the gas blown out by the ultrasonic wave contains a large amount of toxic and harmful gas, and toxic and harmful components are absorbed after passing through a waste gas filtering device.
The temperature of the waste water after the two energy reactions is higher, a large amount of water vapor is formed, a vapor-water mixing zone 3 is formed above the immersion zone, and the water vapor is attached to the outer wall of the capillary-like tube 6. The increased temperature of the waste water and the presence of ambient water vapor in turn accelerate the adhesion of droplets on the capillary-like walls. The top vacuum area 2 of the device is in a negative pressure state, the top vacuum area 2 is communicated with the clear water area 5 through the similar capillary tube 6, the steam-water mixing area 3 maintains a certain negative pressure state, a certain pressure difference exists between the inside and the outside of the similar capillary tube, the pressure in the tube is lower than the pressure outside the tube, water molecules enter the similar capillary tube 6 under the action of the pressure difference, flow into the clear water area 5 along with the action of gravity and the action of vacuum, and are finally discharged through the clear water outlet pipe 9.
Organic matters and salt which are not degraded in the wastewater are intercepted outside the quasi-capillary 6 to form concentrated water which is left in a concentrated water area 13, the concentrated water and precipitated salt enter a salt discharge channel 14, and the concentrated water and the precipitated salt are finally discharged out of the equipment through a discharge pipe 15 after being collected for subsequent treatment.
The embodiment has the following functions and effects:
in the capillary-like wastewater treatment and desalination equipment provided by the invention, the organic matter removal system and the desalination system are integrated and can be simultaneously carried out, and compared with the conventional sewage treatment and membrane treatment, the treatment efficiency is high. The wastewater is treated by utilizing the ultrasound and the microwave simultaneously, the organic matter degradation efficiency is high, and the reaction is thorough. The water molecules are separated by utilizing the pressure difference formed inside and outside the capillary-like tube, so that the purposes of removing salt and organic matters are achieved, and no additional kinetic energy is required to be provided, therefore, the operation energy consumption of the whole system is lower. The system finally obtains clear water and strong brine with lower concentration of organic matters, which is beneficial to the subsequent further optimization treatment of the strong brine, and the part of the strong brine can be mixed with inlet water and then enters the treatment system again, thereby reducing the burden of the subsequent treatment.
The top vacuum area is communicated with the bottom clear water area through the capillary tube, and the top vacuum area is in a vacuum state, so that the clear water area at the bottom of the equipment is vacuumized to discharge water, and the energy consumption is reduced. The upper part of the immersion area is in a vacuum state, and the equipment is charged with water under negative pressure, so that the overall operation energy consumption is reduced.
The ultrasonic energy device is adopted outside the equipment, the operation of the ultrasonic device plays a role in cleaning the similar capillary, the equipment does not need to be provided with a cleaning facility, and manpower and material resources are saved. The requirement of equipment water inlet is low, and the wastewater containing different types of high-salinity and high-concentration organic matters can be treated.
Example 2
The capillary-like wastewater treatment and desalination equipment provided by the invention is used for treating wastewater of a certain pesticide factory, the pesticide wastewater is high-concentration high-salt wastewater, and the quality of inlet water is as follows: pH: 9-10, COD: 1452mg/L, NH 3-N: 217mg/L, salt content: 13.2 percent. After the treatment of the capillary-like wastewater and the desalination equipment provided by the invention, the removal rate of COD is about 70-85%, the removal rate of NH3-N is 60-70%, and the salinity is reduced to below 2-3%. Compared with the common combination of the wastewater physical and chemical treatment process and the membrane technology, the treatment cost is reduced by 20-30% under the same treatment effect.
The above description is provided for the specific embodiments of the present invention, and is not intended to limit the scope of the present invention.
Claims (9)
1. A kind of capillary waste water treatment, desalination apparatus, comprising:
the inside of the device is provided with capillary-like tubes (6) which are arranged orderly and uniformly;
the interior of the device consists of a concentrated water zone (13), an immersion zone (4), a steam-water mixing zone (3), a top vacuum zone (2) and a clear water zone (5);
the clear water area (5) and the top vacuum area (2) in the equipment are connected in a communicated state through the capillary-like tube (6), and the steam-water mixing area (3) is completely isolated from the top vacuum area (2);
the concentrated water area (13) is used for forming concentrated water and precipitated salt, and the concentrated water area (13) is provided with a salt discharge channel (14) which is completely isolated from the clear water area (5);
a microwave energy device (7) and an ultrasonic energy device (8) are arranged outside the device;
the top of the equipment is provided with a vacuum-pumping device (11) and an exhaust gas filtering device (12).
2. The capillary-like wastewater treatment, desalination plant of claim 1, wherein:
the structure of the capillary tube-like tube (6) is cylindrical or square, and the material of the structure is a high-molecular film material with corrosion resistance, high temperature resistance and high pressure resistance.
3. The capillary-like wastewater treatment, desalination plant of claim 1, wherein:
a grid (10) is arranged between the immersion area (4) and the concentrated water area (13) to play a role in homogenizing water quality, water quantity and supporting.
4. The capillary-like wastewater treatment, desalination plant of claim 1, wherein:
the salt discharge channel (14) is arranged in the concentrated water area (13), and concentrated water and precipitated salt formed in the concentrated water area (13) are discharged out of the equipment through the discharge pipe (15) after being collected through the salt discharge channel (14).
5. The capillary-like wastewater treatment, desalination plant of claim 1, wherein:
the waste water in the immersion area (4) is subjected to microwave energy and ultrasonic energy reaction, organic matters in the waste water are gradually degraded and removed, and meanwhile, the temperature of the waste water is continuously increased to generate a large amount of water vapor to form a steam-water mixing area (3) at the upper part of the immersion area (4);
the steam-water mixing area (3) maintains a certain negative pressure value, and the equipment adopts negative pressure water inlet, so that the operation energy consumption is reduced.
6. The capillary-like wastewater treatment, desalination plant of claim 1, wherein:
the top vacuum area (2) is in a vacuum-pumping state under the action of a vacuum-pumping device (11), and the negative pressure value of the top vacuum area (2) is lower than that of the steam-water mixing area (3), so that a certain pressure difference is formed between the inside and the outside of the capillary tube (6);
water molecules outside the quasi-capillary tube (6) enter the quasi-capillary tube (6) through the pressure difference between the inside and the outside of the quasi-capillary tube (6), and then enter the clear water area (5) through the gravity action and the vacuum action.
7. The capillary-like wastewater treatment, desalination plant of claim 1, wherein:
and a waste gas filtering device (12) is arranged at the top vacuum area (2) to absorb toxic and harmful components in the ultrasonic blown gas, and the filtering material is activated carbon which is a strong adsorptive material.
8. The capillary-like wastewater treatment, desalination plant of claim 1, wherein:
the equipment shell (16) is of a cylindrical or square structure and is of a closed structure, and the material is corrosion-resistant, high-temperature-resistant and high-pressure-resistant.
9. The capillary-like wastewater treatment, desalination plant of any of claims 1 to 8, having the steps of:
after the high-salinity wastewater enters the immersion area (4) from the water inlet pipe (1), organic matters in the wastewater are degraded and removed under the action of microwave energy and ultrasonic energy;
the temperature of the wastewater rises, a large amount of water vapor is generated and is attached to the outer wall of the capillary-like tube (6);
water molecules outside the capillary-like tube (6) enter the capillary-like tube (6) under the action of the internal and external pressure difference of the capillary-like tube (6), enter the clear water area (5) under the action of gravity and vacuum, and are finally discharged by the clear water outlet pipe (9);
under the action of ultrasonic energy, the blown-off gas enters the top vacuum area (2) through the capillary-like tube (6) and is exhausted by the vacuum-pumping device (11), and harmful components in the gas are absorbed and removed by the waste gas filtering device (12).
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| FR2941227B1 (en) * | 2008-08-20 | 2013-02-08 | Ugolin Nicolas | METHOD FOR DESSALING OR PURIFYING WATER BY DISTILLING A SPRAY |
| KR101196837B1 (en) * | 2009-11-27 | 2012-11-01 | 대원열판(주) | Apparatus for making fresh water by vacuum evaporation method together with a supersonic vibrator |
| CN102992419A (en) * | 2011-09-08 | 2013-03-27 | 褚蒙 | Method and apparatus for desalinating water as well as method and apparatus for irrigating desalted water |
| CN103964539B (en) * | 2013-01-30 | 2016-02-24 | 北京朗新明环保科技有限公司 | Strong brine microwave desalting equipment |
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