CN212025020U - Energy self-sustaining strong oxidation device for high-organic-matter-concentration difficultly-treated wastewater - Google Patents
Energy self-sustaining strong oxidation device for high-organic-matter-concentration difficultly-treated wastewater Download PDFInfo
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- CN212025020U CN212025020U CN202020499754.7U CN202020499754U CN212025020U CN 212025020 U CN212025020 U CN 212025020U CN 202020499754 U CN202020499754 U CN 202020499754U CN 212025020 U CN212025020 U CN 212025020U
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Abstract
The utility model relates to a self-sustaining strong oxidation unit of high organic matter concentration difficult-to-treat waste water energy belongs to the waste water treatment field. The high-temperature high-pressure wastewater after the catalytic oxidation reaction is completed is sent into the high-pressure heat exchanger for heat recovery, the wastewater after the temperature reduction is sent into the turbine increasing device for mechanical energy recovery, and then sequentially enters a membrane separation device, a water purification tank, a polycrystal seed crystallization device and a melting vitrification device for purification, concentration and recovery.
Description
Technical Field
The utility model belongs to the field of wastewater treatment, in particular to a self-sustaining strong oxidation device and a method for high-organic-matter-concentration difficultly-treated wastewater energy.
Background
The high organic matter concentration wastewater produced by the industries of petroleum, chemical industry, medicine, printing and dyeing, papermaking and the like is very complex in components, not only contains a plurality of toxic and harmful high molecular organic matters such as aromatic compounds and heterocyclic compounds, but also has the COD concentration of more than 60000 mg/L; and the salinity in the wastewater is high, the salt content of partial wastewater is more than 1%, and the high salinity and high organic matter content restrict the traditional biological treatment technology to be difficult to achieve the purpose of complete degradation.
At present, the main methods for treating high organic matter concentration wastewater difficult to treat abroad are an incineration method and a catalytic wet oxidation method. Compared with the burning method, the catalytic wet oxidation treatment method is simple, and NO NO is generatedxAnd dioxin and other pollution gases are a promising treatment mode. However, the existing catalytic wet oxidation method also has a series of technical problems, such as slow oxidation rate, long treatment time, low oxidation degree, difficult water quality reaching standards, low salt recovery rate and the like. The Chinese utility model patent (CN 11814100109B) provides a high-salt high-concentration degradation-resistant organic wastewater treatment process, which adopts the modes of filtration, preliminary oxidation, flash drying, catalytic wet oxidation and the like to separate out partial salt firstly so as to improve the oxidation degree of wastewater; the chinese patent application (3131011605874.9) provides a method for treating high concentration organic wastewater, which adopts the modes of secondary filtration, evaporation desalination, degradation and denitrification, catalytic oxidation, MBR and the like, and firstly separates out partial salt, and then treats the subsequent wastewater with high organic content. However, the above patents use a large amount of energy for water evaporation, and the latent heat of vaporization consumes too much energy during the evaporation process, and the process is relatively complicated.
SUMMERY OF THE UTILITY MODEL
For overcoming the not enough of current production technology, the utility model provides a high organic matter concentration is difficult to handle waste water energy and is from holding strong oxidation device and method, utilize the inside organic matter of high organic matter concentration is difficult to handle waste water to provide the energy for its strong oxidation purification, zero consumption of vaporization latent heat, get rid of organic matter in the difficult processing waste water of high organic matter concentration earlier, the processing of high salt waste water carries out again, and retrieve the salinity that contains in it, it improves waste water oxidation degree to last high temperature oxidation technique, the accelerated reaction process, zero consumption of the external heat source of process, make things convenient for it to use in the industry.
The technical scheme of the utility model:
a high organic matter concentration difficult-to-treat waste water energy self-sustaining strong oxidation device comprises a pH adjusting filter tank 1, a turbocharging device 2, a water feeding pump 3, a high-pressure heat exchange device 4, a catalytic oxidation device 5, a membrane filtering device 6, a water purifying tank 7, a polycrystal seed crystallization device 8, a melting crystallization device 9, a high-pressure air pump 10, an air purification device 11 and a liquid fertilizer recovery device 12;
the pH adjusting and filtering tank 1 is used for receiving high organic matter concentration wastewater to be treated and difficult to treat, and an outlet of the pH adjusting and filtering tank is connected with the turbocharging device 2;
the turbocharging device 2 is used for receiving the high organic matter concentration intractable wastewater from the pH adjusting and filtering tank 1 and the low-temperature high-salt wastewater of the high-pressure heat exchange device 4, the outlet of the high organic matter concentration intractable wastewater in the turbocharging device 2 is connected with the inlet of the water feeding pump 3, and the outlet of the high-salt wastewater of the turbocharging device 2 is connected with the membrane filtering device 6
The high-pressure heat exchange device 4 is provided with a high-organic-concentration refractory wastewater inlet 13, a high-temperature high-organic-concentration refractory wastewater outlet 14, a high-temperature high-salt wastewater inlet 15 and a low-temperature high-salt wastewater outlet 16, the high-organic-concentration refractory wastewater inlet 13 is connected with an outlet of the water feed pump 3, the high-temperature high-organic-concentration refractory wastewater outlet 14 is connected with a high-temperature high-organic-concentration refractory wastewater inlet 20 of the catalytic oxidation device 5, the high-temperature high-salt wastewater inlet 15 is connected with a high-temperature high-salt wastewater outlet 21 of the catalytic oxidation device 5, and the low-temperature high-salt wastewater outlet 16 is communicated with the turbo-charging;
a baffling channel 17, a catalyst filler 18 and an aeration section 19 are arranged inside the catalytic oxidation device 5, and a high-temperature high-organic-concentration refractory wastewater inlet 20, a high-temperature high-salinity wastewater outlet 21 and a gas outlet 22 are arranged outside the catalytic oxidation device; the gas outlet 22 is communicated with the gas purification device 11;
the purified water outlet of the membrane filtering device 6 is connected with a purified water tank 7; the outlet of the high-salt viscous liquid is communicated with a polycrystal seed crystallizing device 8;
the polycrystal seed crystallization device 8 is connected with the melting crystallization device 9, pure salt at the outlet of the polycrystal seed crystallization device 8 is directly recycled, and miscellaneous salt is sent to the melting crystallization device 9 for melting crystallization;
the outlet of the high-pressure air pump 10 is connected with an aeration section 19 of the catalytic oxidation device 5;
the gas in the gas purification device 11 is directly discharged to the atmosphere after purification, and the liquid is sent to the liquid fertilizer recovery device 12 for uniform collection.
Furthermore, the aeration section 19 is arranged at the lower part of the catalytic oxidation device 5, the baffling channels 17 and the catalyst fillers 18 are alternately arranged at the upper part of the catalytic oxidation device 5, and the high-temperature high-organic-concentration refractory wastewater inlet 20 and the gas outlet 22 are both arranged above the uppermost catalyst filler 18; the high-temperature high-salinity wastewater outlet 21 is arranged between the aeration section 19 and the lowermost catalyst packing 18.
A self-sustaining strong oxidation method for high organic matter concentration wastewater difficult to treat energy utilizes organic matters in the high organic matter concentration wastewater difficult to treat to provide energy for strong oxidation purification of the wastewater and recover salt contained in the wastewater, and comprises the following steps:
i, pH adjustment and filtration process: sending the high organic matter concentration wastewater difficult to treat to a pH adjusting and filtering tank 1, and adjusting the pH of the high organic matter concentration wastewater difficult to treat to 7-10; the low-temperature high-salinity wastewater from the high-pressure heat exchange device 4 is indirectly transferred to high-organic-concentration wastewater which is difficult to treat by the turbocharging device 2 through mechanical energy of the low-temperature high-salinity wastewater, the pressure of the high-organic-concentration wastewater which is difficult to treat is increased, and the high-temperature high-salinity wastewater is sent to the high-pressure heat exchange device 4 through the water feeding pump 3;
II, liquid phase heat exchange process: the low-temperature high-organic-concentration difficultly-treated wastewater from the water feeding pump 3 in the high-pressure heat exchange device 4 is subjected to indirect heat exchange with high-temperature high-salt wastewater from the catalytic oxidation device 5, the temperature of the high-organic-concentration difficultly-treated wastewater after heat exchange is increased, and the high-temperature high-organic-concentration difficultly-treated wastewater is sent into the catalytic oxidation device 5 through a high-temperature high-organic-concentration difficultly-treated wastewater outlet 14 and a high-temperature high-organic-concentration difficultly-treated wastewater inlet; the temperature of the high-salinity wastewater after heat exchange is reduced, and the high-salinity wastewater is sent into the turbocharging device 2 from the low-temperature high-salinity wastewater outlet 16, so that the mechanical energy is improved for the pressurization of the wastewater with high organic matter concentration and difficult treatment in the next batch, and the whole heat exchange process is maintained in a liquid phase;
III, high-temperature high-organic-matter-concentration wastewater purification process: oxygen or air is introduced into the catalytic oxidation device 5 through the aeration section 19 by the high-pressure air pump 10, the oxygen and organic matters in the high-temperature high-organic-matter-concentration refractory wastewater are subjected to catalytic oxidation reaction, the wastewater is further heated by the exothermic reaction and the reaction temperature is maintained, the wastewater flows through a baffling channel in the catalytic oxidation device 5 to strengthen mass transfer and regulate and control reaction time, only salt content in the wastewater is high after the requirement of the removal rate of the organic matters is met, and the wastewater is sent into the high-pressure heat exchange device 4 from the high-temperature high-salt wastewater outlet 21 in the form of high-temperature high-salt wastewater to provide heat for preheating the next batch of low-temperature high-; waste gas generated in the treatment process of the high-organic-matter-concentration wastewater difficult to treat is sent into a gas purification device 11 for purification, qualified gas is directly discharged into the atmosphere, and the residual moisture is sent into a liquid fertilizer recovery device 12 in a liquid fertilizer form for recovery;
IV, high-salt wastewater treatment and salt recovery process: high-salt wastewater subjected to mechanical energy recovery in the turbocharging device 2 is sent to a membrane filtering device 6 for salt separation and clean water separation, the clean water is sent to a clean water tank 7 for uniform collection, the high-salt viscous liquid left in the membrane filtering device 6 is sent to a polycrystal seed crystallizing device 8 for crystallization, and the crystallized salt is directly recovered when the purity is high; when the crystallized salt is a low-quality miscellaneous salt, it is sent to a melting vitrification device 9 to be recovered as glass ceramics.
The pressure in the high-pressure heat exchange device 4 is maintained at 0.1-6 MPa, and the temperature is maintained at 100-370 ℃.
The pressure in the catalytic oxidation device 5 is maintained at 0.1-11 MPa, and the temperature is maintained at 100-400 ℃.
The utility model has the advantages that:
(1) the wastewater treatment and heat exchange processes are always carried out in a liquid phase environment, the energy consumption is extremely low, energy contained in organic matters in wastewater which is high in organic matter concentration and difficult to treat is adopted to provide energy for self purification, and auxiliary energy consumption is not needed.
(3) The whole wastewater treatment process is maintained in a high-temperature state, and the wastewater is high in oxidation rate and oxidation degree.
(4) The gradient recovery and deep processing technology is adopted for different salt species, and the additional value of the salt species is greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of the whole set of device of the present invention.
In the figure: 1, adjusting a pH value in a filter tank; 2 a turbocharger device; 3, a water pump; 4, a high-pressure heat exchange device; 5 a catalytic oxidation unit; 6 a membrane filtration device; 7, a water purifying pool; 8 a crystallization device for polycrystalline seeds; 9 a melting crystallization device; 10 high-pressure air pump; 11 a gas purification device; 12 liquid fertilizer recovery device; 13, a high organic matter concentration refractory wastewater inlet; 14, a high-temperature high-organic-matter-concentration difficultly-treated wastewater outlet; 15, a high-temperature high-salinity wastewater inlet; 16 a low-temperature high-salinity wastewater outlet; 17 a deflection channel; 18 a catalyst filler; 19 an aeration section; 20, a high-temperature high-organic-matter-concentration difficultly-treated wastewater inlet; 21, a high-temperature high-salinity wastewater outlet; 22 gas outlet.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
Examples
Sending the high organic matter concentration wastewater difficult to treat to a pH adjusting and filtering tank 1, and adjusting the pH of the high organic matter concentration wastewater difficult to treat to 7-10; the low-temperature high-salinity wastewater from the high-pressure heat exchange device 4 is indirectly transferred to high-organic-concentration wastewater which is difficult to treat by the turbocharging device 2 through mechanical energy of the low-temperature high-salinity wastewater, the pressure of the high-organic-concentration wastewater which is difficult to treat is increased, and the high-temperature high-salinity wastewater is sent to the high-pressure heat exchange device 4 through the water feeding pump 3; the low-temperature high-organic-concentration difficultly-treated wastewater from the water feeding pump 3 in the high-pressure heat exchange device 4 is subjected to indirect heat exchange with high-temperature high-salt wastewater from the catalytic oxidation device 5, the temperature of the high-organic-concentration difficultly-treated wastewater after heat exchange is increased, and the high-temperature high-organic-concentration difficultly-treated wastewater is sent into the catalytic oxidation device 5 through a high-temperature high-organic-concentration difficultly-treated wastewater outlet 14 and a high-temperature high-organic-concentration difficultly-treated wastewater inlet; the temperature of the high-salinity wastewater after heat exchange is reduced, and the high-salinity wastewater is sent into the turbocharging device 2 from the low-temperature high-salinity wastewater outlet 16, so that the mechanical energy is improved for the pressurization of the wastewater with high organic matter concentration and difficult treatment in the next batch, and the whole heat exchange process is maintained in a liquid phase; oxygen or air is introduced into the catalytic oxidation device 5 through the aeration section 19 by the high-pressure air pump 10, the oxygen and organic matters in the high-temperature high-organic-matter-concentration refractory wastewater are subjected to catalytic oxidation reaction, the wastewater is further heated by the exothermic reaction and the reaction temperature is maintained, the wastewater flows through a baffling channel in the catalytic oxidation device 5 to strengthen mass transfer and regulate and control reaction time, only salt content in the wastewater is high after the requirement of the removal rate of the organic matters is met, and the wastewater is sent into the high-pressure heat exchange device 4 from the high-temperature high-salt wastewater outlet 21 in the form of high-temperature high-salt wastewater to provide heat for preheating the next batch of low-temperature high-; waste gas generated in the treatment process of high organic matter concentration wastewater difficult to treat in the catalytic oxidation device 5 is sent into a gas purification device 11 for purification, qualified gas is directly discharged into the atmosphere, and residual moisture is sent into a liquid fertilizer recovery device 12 in a liquid fertilizer form for recovery; high-salt wastewater subjected to mechanical energy recovery in the turbocharging device 2 is sent to a membrane filtering device 6 for salt separation and clean water separation, the clean water is sent to a clean water tank 7 for uniform collection, the high-salt viscous liquid left in the membrane filtering device 6 is sent to a polycrystal seed crystallizing device 8 for crystallization, and the crystallized salt is directly recovered when the purity is high; when the crystallized salt is a low-quality miscellaneous salt, it is sent to a melting vitrification device 9 to be recovered as glass ceramics.
The present invention includes but is not limited to the embodiment, it should be noted that, for those skilled in the art, other ways may be adopted to make the replacement without departing from the technical principle of the present invention, and these replacements should also be regarded as the protection scope of the present invention.
Claims (1)
1. The energy self-sustaining strong oxidation device for the high-organic-matter-concentration difficultly-treated wastewater is characterized by comprising a pH adjusting filter tank (1), a turbocharging device (2), a water feeding pump (3), a high-pressure heat exchange device (4), a catalytic oxidation device (5), a membrane filter device (6), a water purification tank (7), a polycrystal seed crystallization device (8), a melting crystallization device (9), a high-pressure air pump (10), a gas purification device (11) and a liquid fertilizer recovery device (12);
the pH adjusting and filtering tank (1) is used for receiving high organic matter concentration wastewater to be treated and difficult to treat, and an outlet of the pH adjusting and filtering tank is connected with the turbocharging device (2);
the turbocharging device (2) is used for receiving high-organic-concentration difficultly-treated wastewater from the pH adjusting and filtering tank (1) and low-temperature high-salt wastewater from the high-pressure heat exchange device (4), an outlet of the high-organic-concentration difficultly-treated wastewater in the turbocharging device (2) is connected with an inlet of the water feed pump (3), and an outlet of the high-salt wastewater in the turbocharging device (2) is connected with the membrane filtering device (6);
the high-pressure heat exchange device (4) is provided with a high-organic-concentration refractory wastewater inlet (13), a high-temperature high-organic-concentration refractory wastewater outlet (14), a high-temperature high-salt wastewater inlet (15) and a low-temperature high-salt wastewater outlet (16), the high-organic-concentration refractory wastewater inlet (13) is connected with an outlet of the water feed pump (3), the high-temperature high-organic-concentration refractory wastewater outlet (14) is connected with a high-temperature high-organic-concentration refractory wastewater inlet (20) of the catalytic oxidation device (5), the high-temperature high-salt wastewater inlet (15) is connected with a high-temperature high-salt wastewater outlet (21) of the catalytic oxidation device (5), and the low-temperature high-salt wastewater outlet (16) is introduced into the turbo-charging device (;
a baffling channel (17), a catalyst filler (18) and an aeration section (19) are arranged inside the catalytic oxidation device (5), and a high-temperature high-organic-concentration refractory wastewater inlet (20), a high-temperature high-salt wastewater outlet (21) and a gas outlet (22) are arranged outside the catalytic oxidation device; the gas outlet (22) is communicated with a gas purification device (11);
the purified water outlet of the membrane filtering device (6) is connected with a purified water tank (7); the outlet of the high-salt viscous liquid is connected with a multi-crystal seed crystallization device (8);
the multi-crystal seed crystallization device (8) is connected with the melting crystallization device (9), pure salt at the outlet of the multi-crystal seed crystallization device (8) is directly recovered, and miscellaneous salt is sent into the melting crystallization device (9) for melting crystallization;
the outlet of the high-pressure air pump (10) is connected with an aeration section (19) of the catalytic oxidation device (5);
the gas in the gas purification device (11) is directly discharged into the atmosphere after purification, and the liquid is sent into the liquid fertilizer recovery device (12) to be collected uniformly.
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| CN111302535A (en) * | 2020-04-08 | 2020-06-19 | 大工能源环境科技(大连)有限公司 | Energy self-sustaining strong oxidation device and method for high-organic-matter-concentration difficultly-treated wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111302535A (en) * | 2020-04-08 | 2020-06-19 | 大工能源环境科技(大连)有限公司 | Energy self-sustaining strong oxidation device and method for high-organic-matter-concentration difficultly-treated wastewater |
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Effective date of registration: 20230511 Address after: 116024 No. 2 Ling Road, Ganjingzi District, Liaoning, Dalian Patentee after: DALIAN University OF TECHNOLOGY Address before: No. 1, 1st Floor, Unit 1, No. 202 Xi'an Road, Shahekou District, Dalian City, Liaoning Province, 116024 Patentee before: Dagong energy environment technology (Dalian) Co.,Ltd. Patentee before: DALIAN University OF TECHNOLOGY |
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