CN111718105B - Treatment device and method for degrading oily sludge based on ozone oxidation and hydrogen peroxide - Google Patents
Treatment device and method for degrading oily sludge based on ozone oxidation and hydrogen peroxide Download PDFInfo
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- CN111718105B CN111718105B CN202010686802.8A CN202010686802A CN111718105B CN 111718105 B CN111718105 B CN 111718105B CN 202010686802 A CN202010686802 A CN 202010686802A CN 111718105 B CN111718105 B CN 111718105B
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 154
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 147
- 239000010802 sludge Substances 0.000 title claims abstract description 102
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 56
- 230000003647 oxidation Effects 0.000 title claims abstract description 55
- 230000000593 degrading effect Effects 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 78
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 claims abstract description 17
- 230000015556 catabolic process Effects 0.000 claims abstract description 15
- 238000006731 degradation reaction Methods 0.000 claims abstract description 15
- 238000005516 engineering process Methods 0.000 claims abstract description 13
- 239000004094 surface-active agent Substances 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 210000001503 joint Anatomy 0.000 claims description 20
- 239000003921 oil Substances 0.000 claims description 18
- 238000011049 filling Methods 0.000 claims description 12
- 238000005273 aeration Methods 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 238000000855 fermentation Methods 0.000 claims description 7
- 230000004151 fermentation Effects 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 7
- 230000001502 supplementing effect Effects 0.000 claims description 7
- 208000005156 Dehydration Diseases 0.000 claims description 5
- 230000018044 dehydration Effects 0.000 claims description 5
- 238000006297 dehydration reaction Methods 0.000 claims description 5
- 238000004062 sedimentation Methods 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 4
- 210000000170 cell membrane Anatomy 0.000 claims description 3
- 210000002421 cell wall Anatomy 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 3
- 238000006385 ozonation reaction Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000004064 recycling Methods 0.000 abstract description 6
- 239000003895 organic fertilizer Substances 0.000 abstract description 5
- 238000002474 experimental method Methods 0.000 abstract description 3
- 238000005191 phase separation Methods 0.000 abstract description 3
- 229960002163 hydrogen peroxide Drugs 0.000 description 52
- 238000003756 stirring Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 4
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 2
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 2
- 150000001555 benzenes Chemical class 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 238000004626 scanning electron microscopy Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
-
- 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
- C02F2103/36—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 manufacture of organic compounds
- C02F2103/365—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 manufacture of organic compounds from petrochemical industry (e.g. refineries)
Abstract
The invention discloses a treatment device for degrading oily sludge based on ozone oxidation and hydrogen peroxide oxidation, which comprises an ozone reaction generator and a hydrogen peroxide reactor, wherein the oily sludge is subjected to three-phase separation by taking Cetyl Trimethyl Ammonium Chloride (CTAC) as a surfactant for pretreatment, and then the oily sludge is subjected to ozone oxidation and hydrogen peroxide oxidation combined oxidation degradation. Wherein the ozone oxidation device is connected by a rubber tube, and a valve is arranged at the joint of the connector. The device can carry out slow-release harmless treatment on the organic matters of the oily sludge, convert the sludge into organic fertilizer, realize the recycling of the sludge, integrate ozone oxidation and hydrogen peroxide oxidation treatment technologies into a whole, and is convenient to use and convenient to experiment and use.
Description
Technical Field
The invention relates to the technical field of oil-containing sludge degradation, in particular to a technology and a degradation device for degrading oil-containing sludge based on ozone oxidation and hydrogen peroxide.
Background
Petrochemical sludge contains a large amount of crude oil, and the current treatment method of the oil-containing sludge by a plurality of units is simply drying after dehydration, even simply stacking in open air or burying, and treating the oil-containing sludge as waste; on the one hand, the environment is polluted, and on the other hand, the value in the sludge is not effectively utilized; the oily sludge is used as dangerous solid waste, and according to the regulations in China, the sewage discharge cost of 1000 yuan/t is also required to be paid in the environment, and the improper treatment of the sludge has great economic cost. The project proposes to pretreat by adopting a surfactant, and strengthen the generation concentration of hydroxyl free radicals in H2O2 by combining H2O2 with ozone, thereby improving the oxidation performance of H2O2 and improving the treatment efficiency of oily sludge. The patent with the publication number of CN201610722000.1 and the publication date of 2016-08-25 is a treatment process of oily sludge, which discloses a treatment process for oily sludge, and the principle is as follows: 1) Adding water into the oily sludge, regulating the pH value to 8-10, and fully homogenizing; (2) Oxidizing the homogenized oily sludge with ozone under the action of a catalyst; (3) After oxidation treatment, settling and layering are carried out on the oily sludge, and an upper oil phase and a lower water phase are separated; (4) Adding a flocculating agent into the lower water phase separated in the step (3), then carrying out solid-liquid separation, and recycling the separated clear liquid for the step (1). Although the patent can achieve the effect of degrading the oily sludge, the pure ozone oxidation has lower degradation capacity, and the treated sludge is not further recycled, so that certain economic loss is caused. The patent with Chinese patent number CN201320746945.9 and publication date 2014-06-04 is a patent aiming at oil-containing sludge treatment device of gas field, which discloses an oil-containing sludge treatment device, the principle is as follows: the mud water tank is connected with a 1# mud pump, one end of the 1# mud pump is connected with a 2# reaction tank, the 1# reaction tank and the 2# reaction tank are respectively connected with a 2# mud pump, an ozone generating device, a calcium oxide dosing device, a sodium hydroxide dosing device and a 1# flocculant dosing device, one end of the 2# mud pump is connected with a 2# flocculant dosing device and a slurry tank, one end of the slurry tank is connected with a screw press dehydrator, a first stirring device is arranged in the mud water tank, a second stirring device is arranged in the 1# reaction tank, a third stirring device is arranged in the 2# reaction tank, a fourth stirring device is arranged in the slurry tank, and a fifth stirring device is arranged in the 2# flocculant dosing device. Although the oily sludge treatment device can reduce the discharge amount of the oily sludge, the oily sludge can not be further degraded, and the generated oily sludge can cause certain pollution to the environment.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a treatment device for degrading oily sludge based on ozone oxidation and hydrogen peroxide oxidation, which comprises an ozone reaction generator and a hydrogen peroxide reactor; the ozone reaction generator comprises an ozone reaction bin, an ozone tail gas outlet and a sludge inlet are arranged at the top of the ozone reaction bin, an ozone filling port is arranged in the middle of the ozone reaction bin, and the ozone filling port is in butt joint with ozone discharge holes uniformly distributed in the ozone reaction bin through a pipeline; the bottom of the ozone reaction bin is provided with a sludge outlet;
the hydrogen peroxide reactor comprises a dioxygen reaction bin, wherein an insulating layer is arranged on the inner side wall of the hydrogen peroxide reaction bin, a stirrer and a gas distribution screen are arranged in the hydrogen peroxide reaction bin, and a feed inlet, a sampling port, a discharge port, a water supplementing port, an air inlet, an air outlet, a leachate collecting port, a temperature sensor and an oxygen concentration sensor which are communicated with the inside of the bin are arranged on the wall of the hydrogen peroxide reaction bin; the gas distribution screen mesh is in butt joint with the gas inlet pipeline.
Preferably, a quick-mounting blind plate is arranged at the discharge hole.
Preferably, the feeding port, the water supplementing port and the air outlet are arranged at the middle upper part of the hydrogen peroxide reaction bin, the sampling port, the temperature sensor and the oxygen concentration sensor are arranged at the middle part of the hydrogen peroxide reaction bin, the discharging port and the air inlet are arranged at the middle lower part of the hydrogen peroxide reaction bin, and the leachate collecting port is arranged at the bottom of the hydrogen peroxide reaction bin.
Preferably, the ozone reaction generator further comprises an ozone tail gas absorbing device, an ozone supply device and a power supply; the ozone tail gas absorbing device is in butt joint with an ozone tail gas outlet of the ozone reaction bin through a pipeline, and an ozone filling port of the ozone reaction bin is in butt joint with an ozone supply device pipeline; the power supply is respectively connected with the ozone reaction generator, the hydrogen peroxide reactor, the ozone tail gas absorbing device and the ozone supply device through an electric control switch.
Preferably, the ozone reaction generator further comprises an ozone replenishment control device, and the ozone replenishment control device comprises a PLC control system; the ozone filling port of the ozone reaction bin is in butt joint with the ozone supply control device through a pipeline, and the ozone supply control device is in butt joint with the ozone supply device through a pipeline; the power supply is connected with the ozone supply control device electric control switch.
A treatment method for degrading oily sludge based on ozone oxidation and hydrogen peroxide oxidation is characterized in that cetyl trimethyl ammonium chloride is used as a surfactant to enable oily sludge, oil and water residues to be separated in three phases, the returned activated sludge is introduced into an aeration tank, aeration is carried out for about 6 hours, the returned sludge is introduced into a secondary sedimentation tank to be precipitated, ozonization is carried out on the returned sludge, and the strong oxidizing property of ozone is utilized to degrade cell walls and cell membranes which are difficult to decompose and utilize by microorganisms; and (3) further utilizing a hydrogen peroxide technology to carry out dehydration treatment on the returned sludge after ozone oxidation, adding the returned sludge into a fermentation tank, fully fermenting the returned sludge through overturning of an overturning machine and aeration of an aeration system, and finally transporting the sludge out of the tail part of the fermentation tank to realize integration of a sludge reduction technology.
Compared with the existing oily sludge treatment technology, the invention has the beneficial effects that:
1. it is proposed to use cetyltrimethylammonium chloride (CTAC) as a surfactant to separate the oily sludge from the oil and water phases.
2. The method has the advantages that the surfactant, the ozone and the hydrogen peroxide are combined to treat the sludge for sludge dehydration, the problem that the specific resistance of the sludge is relatively high when the hydrogen peroxide is used for conditioning the sludge in the previous study is solved, the water content of a sludge cake can be further reduced, and the three agents are combined to have a certain synergistic effect and provide a sludge recycling technology for treating the oily sludge by combining ozone oxidation and hydrogen peroxide oxidation.
3. The three processes of three-phase separation, ozone oxidation and hydrogen peroxide oxidation of the oily sludge are innovatively integrated in one reaction device, so that the efficient degradation of the oily sludge and the recycling application of the sludge are realized.
Drawings
The invention is described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a treatment device for degrading oily sludge based on ozone oxidation and hydrogen peroxide in combination, according to an embodiment of the invention.
Fig. 2 is a front view of a hydrogen peroxide solution reactor according to an embodiment of the present invention.
FIG. 3 is a side view of a hydrogen peroxide reactor according to an embodiment of the present invention.
In the figure, 1, a reaction bin, 2, a stirring system, 3, a feed inlet, 4, a sampling port, 5, an air distribution screen, 6, a quick-assembly blind plate, 7, a discharge port, 8, an insulating layer, 9, an air inlet, 10, a water supplementing port, 11, an air outlet, 12, a temperature sensor, 13, an oxygen concentration sensor, 14, a leachate collecting port, 15, a supporting bottom plate, 16, an ozone reaction generator, 17, an ozone supply control device, 18, an ozone tail gas absorbing device, 19-ozone supply device, 20, a power supply device, 21 and a hydrogen peroxide oxidation reactor.
Detailed Description
Example 1
As shown in fig. 1-3, the invention discloses a treatment device for degrading oily sludge based on ozone oxidation and hydrogen peroxide oxidation in combination, which comprises an ozone reaction generator 16 and a hydrogen peroxide reactor 21; the ozone reaction generator 16 comprises an ozone reaction bin, an ozone tail gas outlet and a sludge inlet are arranged at the top of the ozone reaction bin, an ozone filling port is arranged in the middle of the ozone reaction bin, and the ozone filling port is in butt joint with ozone discharge holes uniformly distributed in the ozone reaction bin through pipelines; the bottom of the ozone reaction bin is provided with a sludge outlet;
the hydrogen peroxide reactor comprises a dioxygen reaction bin 1, wherein an insulating layer 8 is arranged on the inner side wall of the oxydol reaction bin 1, a stirrer 2 and an air distribution screen 5 are arranged in the oxydol reaction bin, and a feed inlet 3, a sampling port 4, a discharge port 7, a water supplementing port 10, an air inlet 9, an air outlet 11, a leachate collecting port 14, a temperature sensor 12 and an oxygen concentration sensor 13 which are communicated with the oxydol reaction bin are arranged on the wall of the oxydol reaction bin; the feed inlet 3 of the hydrogen peroxide reaction bin is in butt joint or track linkage with a sludge discharge outlet pipeline of the ozone reaction bin; the gas distribution screen 5 is in pipeline butt joint with the gas inlet 9.
And a quick-assembly blind plate 6 is arranged at the discharge hole.
The feeding port 3, the water supplementing port 10 and the air outlet 11 are arranged at the middle upper part of the hydrogen peroxide reaction bin, the sampling port 4, the temperature sensor 12 and the oxygen concentration sensor 13 are arranged at the middle part of the hydrogen peroxide reaction bin, the discharging port 7 and the air inlet 9 are arranged at the middle lower part of the hydrogen peroxide reaction bin 1, and the leaching liquid collecting port 14 is arranged at the bottom of the hydrogen peroxide reaction bin.
The ozone reaction generator also comprises an ozone tail gas absorbing device 18, an ozone supply device 19 (namely, the supply and the transmission of raw materials for ozone generation can be formed by directly adding a storage container to a small air pump) and a power supply 20; wherein, the ozone tail gas absorbing device 18 is in butt joint with an ozone tail gas outlet of the ozone reaction bin through a pipeline, and an ozone filling port of the ozone reaction bin is in butt joint with an ozone supply device 19 through a pipeline; the power supply 20 is electrically controlled to be connected with the ozone reaction generator 16, the hydrogen peroxide reactor 21, the ozone tail gas absorbing device 18 and the ozone supply device 19 respectively.
The ozone reaction generator further comprises ozone replenishment control means 17 (a PLC control system may be used); the ozone filling port of the ozone reaction bin is in butt joint with the ozone supply control device 17 through a pipeline, and the ozone supply control device 17 is in pipeline butt joint with the ozone supply device 19; the power supply 20 is electrically controlled to be connected with the ozone supply control device 17.
Experimental example:
the experimental scheme adopted by the invention is as follows: scheme one: firstly, three phases of oil-containing sludge oil and water residues are separated by taking Cetyl Trimethyl Ammonium Chloride (CTAC) as a surfactant, and the influence of the addition amount of the CTAC on the oil-water residue separation effect is examined. By means of SEM analysis, the action principle of CTAC on oil-water residue high-efficiency separation is analyzed. Then, firstly, the ozone and the hydrogen peroxide react to strengthen the generation of hydroxyl free radicals in the hydrogen peroxide, and further strengthen the oxidation of the hydrogen peroxide. And finally, introducing the returned activated sludge into an aeration tank, aerating for about 6 hours, introducing the returned sludge into a secondary sedimentation tank for sedimentation, performing ozonization treatment on the returned sludge, and degrading cell walls and cell membranes which are difficult to decompose and utilize by utilizing the strong oxidizing property of ozone, so that the biodegradability of the returned sludge is greatly improved. And (3) further utilizing a hydrogen peroxide technology to carry out dehydration treatment on the returned sludge after ozone oxidation, adding the returned sludge into a fermentation tank, fully fermenting the returned sludge through overturning of an overturning machine and aeration of an aeration system, and finally transporting the sludge out of the tail part of the fermentation tank to realize integration of a sludge reduction technology. The influence of hydrogen peroxide concentration, ozone amount, temperature, pH, load and the like on organic degradation is examined; optimizing process parameters and realizing the efficient degradation of hydrocarbons, phenols, benzene series, anthracene, pyrene and the like. The degradation mechanism of organic matters under the action of ozone and hydrogen peroxide is deeply studied by means of instruments such as FTIR, XPS, chromatography and the like.
Scheme II: oil-containing sludge oil and water residues are separated by using Cetyl Trimethyl Ammonium Chloride (CTAC) as a surfactant. And (5) observing the influence of the addition amount of CTAC on the oil-water-slag separation effect. By means of SEM analysis, the action principle of CTAC on oil-water residue high-efficiency separation is analyzed. Ozone and hydrogen peroxide are synchronously added into the sludge, the hydrogen peroxide flows from top to bottom, the ozone moves from bottom to top, the contact reaction time of the ozone and the hydrogen peroxide is increased, and the oxidation effect is enhanced. Finally, the final fermentation and reduction of the sludge are realized by the conventional biological treatment technology of the oily sludge. The influence of hydrogen peroxide concentration, ozone amount, temperature, pH, load and the like on organic degradation is examined; optimizing process parameters and realizing the efficient degradation of hydrocarbons, phenols, benzene series, anthracene, pyrene and the like. The degradation mechanism of organic matters under the action of ozone and hydrogen peroxide is deeply studied by means of instruments such as FTIR, XPS, chromatography and the like.
The novel organic fertilizer produced by treating sludge through the combined technology of ozone oxidation and hydrogen peroxide is applied in a simulated field, and theoretical evaluation is made on the performance of the novel organic fertilizer through the growth condition of crops.
The mechanism of the combined degradation of the hexadecyl trimethyl ammonium chloride, the ozone oxidation and the hydrogen peroxide oxidation on the oily sludge is verified through experimental examples, and experiments prove that the novel organic fertilizer has good degradation effect on the oily sludge, and the waste recycling is completely realized.
The invention provides a treatment device for degrading oily sludge based on ozone oxidation and hydrogen peroxide oxidation, which comprises an ozone oxidation generating device and a hydrogen peroxide oxidation reaction generating device, wherein the oil sludge is pretreated by three-phase separation of oil and water residues of the oily sludge by taking Cetyl Trimethyl Ammonium Chloride (CTAC) as a surfactant, and the oily sludge is degraded by the ozone oxidation and hydrogen peroxide oxidation combined oxidation. Wherein the ozone oxidation device is connected by a rubber tube, and a valve is arranged at the joint of the connector. The device can carry out slow-release harmless treatment on the organic matters of the oily sludge, convert the sludge into organic fertilizer, realize the recycling of the sludge, integrate ozone oxidation and hydrogen peroxide oxidation treatment technologies into a whole, and is convenient to use and convenient to experiment and use.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The treatment method for degrading the oily sludge based on the combination of ozone oxidation and hydrogen peroxide oxidation is characterized by comprising an ozone reaction generator and a hydrogen peroxide reactor; the ozone reaction generator comprises an ozone reaction bin, an ozone tail gas outlet and a sludge inlet are arranged at the top of the ozone reaction bin, an ozone filling port is arranged in the middle of the ozone reaction bin, and the ozone filling port is in butt joint with ozone discharge holes uniformly distributed in the ozone reaction bin through a pipeline; the bottom of the ozone reaction bin is provided with a sludge outlet;
the hydrogen peroxide reactor comprises a hydrogen peroxide reaction bin, wherein an insulating layer is arranged on the inner side wall of the hydrogen peroxide reaction bin, a stirrer and a gas distribution screen are arranged in the hydrogen peroxide reaction bin, and a feed inlet, a sampling port, a discharge port, a water supplementing port, an air inlet, an air outlet, a leachate collecting port, a temperature sensor and an oxygen concentration sensor which are communicated with the inside of the hydrogen peroxide reaction bin are arranged on the wall of the hydrogen peroxide reaction bin; the feed inlet of the hydrogen peroxide reaction bin is in butt joint or track linkage with a sludge discharge outlet pipeline of the ozone reaction bin; the gas distribution screen mesh is in butt joint with the gas inlet pipeline;
a treatment method for degrading oily sludge based on ozone oxidation and hydrogen peroxide oxidation comprises the steps of firstly, enabling oily sludge, oil and water residues to be separated in three phases through taking hexadecyl trimethyl ammonium chloride as a surfactant, introducing the reflowed activated sludge into an aeration tank, aerating for 6 hours, introducing the reflowed sludge into a secondary sedimentation tank for sedimentation, carrying out ozonization on the reflowed sludge, and degrading cell walls and cell membranes which are difficult to decompose and utilize by utilizing the strong oxidizing property of ozone; and (3) further utilizing a hydrogen peroxide technology to carry out dehydration treatment on the returned sludge after ozone oxidation, adding the returned sludge into a fermentation tank, fully fermenting the returned sludge through overturning of an overturning machine and aeration of an aeration system, and finally transporting the sludge out of the tail part of the fermentation tank to realize integration of a sludge reduction technology.
2. The treatment method for degrading oily sludge based on ozone oxidation and hydrogen peroxide oxidation in combination as claimed in claim 1, wherein a fast-assembling blind plate is arranged at the discharge port.
3. The treatment method for degrading oily sludge based on combined ozone oxidation and hydrogen peroxide oxidation according to claim 2, wherein the feeding port, the water supplementing port and the air outlet are arranged at the middle upper part of the hydrogen peroxide reaction bin, the sampling port, the temperature sensor and the oxygen concentration sensor are arranged at the middle part of the hydrogen peroxide reaction bin, the discharging port and the air inlet are arranged at the middle lower part of the hydrogen peroxide reaction bin, and the leachate collecting port is arranged at the bottom of the hydrogen peroxide reaction bin.
4. The method for treating sludge containing oil based on combined degradation of ozone oxidation and hydrogen peroxide oxidation according to claim 3, wherein the ozone reaction generator further comprises an ozone tail gas absorption device, an ozone supply device and a power supply; the ozone tail gas absorbing device is in butt joint with an ozone tail gas outlet of the ozone reaction bin through a pipeline, and an ozone filling port of the ozone reaction bin is in butt joint with an ozone supply device pipeline; the power supply is respectively connected with the ozone reaction generator, the hydrogen peroxide reactor, the ozone tail gas absorbing device and the ozone supply device through an electric control switch.
5. The method for treating sludge containing oil based on combined degradation of ozone oxidation and hydrogen peroxide oxidation according to claim 4, wherein the ozone reaction generator further comprises an ozone replenishment control device, and the ozone replenishment control device comprises a PLC control system; the ozone filling port of the ozone reaction bin is in butt joint with the ozone supply control device through a pipeline, and the ozone supply control device is in butt joint with the ozone supply device through a pipeline; the power supply is connected with the ozone supply control device electric control switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010686802.8A CN111718105B (en) | 2020-07-16 | 2020-07-16 | Treatment device and method for degrading oily sludge based on ozone oxidation and hydrogen peroxide |
Applications Claiming Priority (1)
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