CN116913401A - Biological method-based oily sludge treatment method - Google Patents
Biological method-based oily sludge treatment method Download PDFInfo
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- 239000010802 sludge Substances 0.000 title claims abstract description 238
- 238000011282 treatment Methods 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000010170 biological method Methods 0.000 title claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 113
- 238000013441 quality evaluation Methods 0.000 claims abstract description 35
- 238000006243 chemical reaction Methods 0.000 claims abstract description 33
- 238000007781 pre-processing Methods 0.000 claims abstract description 31
- 239000002910 solid waste Substances 0.000 claims abstract description 23
- 238000003860 storage Methods 0.000 claims abstract description 6
- 239000005416 organic matter Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 62
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 29
- 239000001301 oxygen Substances 0.000 claims description 29
- 229910052760 oxygen Inorganic materials 0.000 claims description 29
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 241000894006 Bacteria Species 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 238000009210 therapy by ultrasound Methods 0.000 claims description 6
- 241000193830 Bacillus <bacterium> Species 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 131
- 230000000694 effects Effects 0.000 description 30
- 239000000126 substance Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005842 biochemical reaction Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000011369 optimal treatment Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 230000031018 biological processes and functions Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- -1 floatation tank scum Substances 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention relates to the technical field of oil-containing sludge treatment, in particular to an oil-containing sludge treatment method based on a biological method, which comprises the following steps of S1, acquiring the oil content, the organic matter content, the moisture content, the viscosity and the solid waste content of the oil-containing sludge by a data acquisition module, S2, calculating the quality evaluation coefficient of the oil-containing sludge by a data processing module according to the data acquired by the data acquisition module, S3, determining the treatment mode of the oil-containing sludge by the data processing module according to the quality evaluation coefficient of the oil-containing sludge, S4, determining the pre-processing mode of the oil-containing sludge or the vacuum pressure in a reaction vessel by the data processing module, and S5, when the oil content of the oil-containing sludge is in a preset condition, determining that the oil-containing sludge treatment is finished and conveying the oil-containing sludge to a storage tank by the data processing module.
Description
Technical Field
The invention relates to the technical field of oily sludge treatment, in particular to an oily sludge treatment method based on a biological method.
Background
The oil-containing sludge is a petroleum chemical production concomitant product, is a main pollution source for petroleum production, and has complex composition. The oily sludge in the oil refining sewage treatment field mainly originates from oil separation tank bottom sludge, floatation tank scum, crude oil tank bottom sludge and the like, is commonly called as 'three sludge', and is accompanied by certain solids. The oily sludge is characterized in that: a. the oil content is high, and the viscosity is high; b. the components are complex, and the treatment difficulty is high; c. most of harmful components exceed emission standards; d. contains a higher heating value. Because the oily sludge has huge volume, contains a large amount of mineral oil, sulfides, benzene series, phenols, anthracene, pyrene and other toxic and harmful substances with malodor, is HW08 dangerous waste calibrated in the national dangerous waste directory, and has great harm to the environment. If the soil is directly discharged without treatment, a large amount of cultivated land is occupied, soil, ground water and underground water are polluted along with the flushing of rainwater, and the surrounding soil, water and air are polluted by peculiar smell generated by the oily sludge. At present, the treatment modes of the oily sludge at home and abroad include landfill method, extraction method, thermal analysis, composting method and the like. Although the solvent extraction method, the chemical pyrolysis method and other methods can recycle useful parts in the oil-containing sludge, the oil sludge has excessive impurities and excessive viscosity, and the pretreatment process can influence the effect of recovery equipment. The problems are to be solved so that the treatment of the oily sludge can achieve the treatment effects of recycling, reducing and harmlessly treating the sludge.
Chinese patent publication No.: CN113060915a discloses an oily sludge treatment process comprising chemical heat washing and stirring of oily sludge to separate a dirty oil component and a slurry component; sequentially sieving the slurry component, namely sieving the solid sundry component with the size of more than 0.1 mm and the solid particle component with the size of more than 0.1 mm to obtain a sewage component; recovering the dirty oil component, the solid debris component and the solid particle component respectively; the sewage component is treated for recycling.
It follows that the prior art has the following problems: the control strategy of the treatment process is relatively fixed, and cannot be dynamically adjusted according to the condition of the oily sludge detected in real time, so that the optimal control effect is difficult to realize; the inherent relation between the components and the characteristics of the oily sludge is not considered, so that the fine control of the treatment process of the oily sludge can not be realized, and the treatment efficiency is low.
Disclosure of Invention
Therefore, the invention provides an oily sludge treatment method based on a biological method, which is used for solving the problems of poor accuracy and low efficiency in the oily sludge treatment process in the prior art.
In order to achieve the above object, the present invention provides a biological method for treating oily sludge, comprising:
step S1, a data acquisition module acquires the oil content, organic matter content, moisture content, viscosity and solid waste content of oil-containing sludge;
s2, calculating a quality evaluation coefficient of the oil-containing sludge by the data processing module according to the data acquired by the data acquisition module;
s3, the data processing module determines a processing mode of the oil-containing sludge according to the quality evaluation coefficient of the oil-containing sludge;
step S4, when the data processing module determines that the treatment mode of the oily sludge is the first treatment mode, the data processing module determines the preprocessing mode of the oily sludge according to the first relative difference;
when the data processing module determines that the treatment mode of the oily sludge is the second treatment mode, the data processing module determines the vacuum pressure in the reaction container according to the second relative difference;
step S5, when the oil content of the oily sludge is in a preset condition, the data processing module determines that the treatment of the oily sludge is completed and conveys the oily sludge to a storage tank;
in the step S4, the data processing module determines a plurality of preprocessing modes for the oily sludge according to the comparison result of the first relative difference between the quality evaluation coefficient of the oily sludge and the preset first relative difference, where the preprocessing modes include a first preprocessing mode for stirring the oily sludge while performing ultrasonic treatment and a second preprocessing mode for stirring the oily sludge after filling oxygen into the reaction vessel in advance.
Further, the formula for calculating the oil-containing sludge quality evaluation coefficient P by the data processing module is as follows
Wherein Ai represents the oil content of the ith oil-containing sludge sample, bi represents the organic content of the ith oil-containing sludge sample, ci represents the moisture content of the ith oil-containing sludge sample, N i represents the viscosity of the ith oil-containing sludge sample, yi represents the solid waste content of the ith oil-containing sludge sample, n represents the number of samples collected, and i is an integer of 1 or more.
Further, the data processing module determines a plurality of processing modes of the oily sludge according to the comparison result of the quality evaluation coefficient P of the oily sludge and the preset quality evaluation coefficient, wherein the processing modes comprise a first processing mode of preprocessing the oily sludge, adding bacillus into the oily sludge, and a second processing mode of carrying out vacuum processing on a reaction container, and adding methane bacteria and acetic acid bacteria into the oily sludge for stirring.
Further, when the data processing module determines that the treatment mode of the oily sludge is the first treatment mode, the data processing module determines a first pretreatment mode of the oily sludge according to the fact that the first relative difference is larger than a preset first relative difference, and determines a second pretreatment mode of the oily sludge according to the fact that the first relative difference is smaller than or equal to the preset first relative difference.
Further, when the data processing module determines that the treatment mode of the oily sludge is the second treatment mode, the data processing module determines a plurality of vacuum pressures in the reaction vessel according to the comparison result of the second relative difference between the oily sludge quality evaluation coefficient and the preset second relative difference.
Further, when the data processing module determines to process the oily sludge in a corresponding processing mode, the data processing module determines a plurality of stirring rates for stirring the oily sludge according to a comparison result of the viscosity of the oily sludge and a preset viscosity.
Further, when the data processing module determines that the pretreatment mode of the oily sludge is the first pretreatment mode, the data processing module determines a plurality of ultrasonic powers of ultrasonic waves according to a comparison result of the content of solid waste in the oily sludge and the content of preset solid waste.
Further, when the data processing module determines that the pretreatment mode of the oil-containing sludge is the second pretreatment mode, the data processing module determines a plurality of oxygen addition amounts for adding oxygen into the reverse container according to a comparison result of the oil content in the oil-containing sludge and the preset oil content.
Further, after the oily sludge is processed according to the corresponding processing mode determined by the data processing module, the data processing module determines whether to adjust the stirring rate of the oily sludge according to a comparison result of the residual oil content and the preset residual oil content.
Further, when the data processing module determines to adjust the stirring rate of the oily sludge, the data processing module calculates a difference value between the residual oil content and a preset residual oil content and determines a plurality of adjustment coefficients for adjusting the stirring rate of the oily sludge according to a comparison result of the difference value and the preset difference value, wherein the adjustment coefficients comprise a first adjustment coefficientSecond adjustment coefficient->
Compared with the prior art, the method has the beneficial effects that the method adopts a matched treatment mode according to the actual properties of the oil-containing sludge, improves the removal efficiency of grease and organic matters, establishes a model between a quality evaluation coefficient and the treatment mode, and realizes the accurate and dynamic control of sludge treatment.
Further, the data processing module automatically selects the most suitable pretreatment mode to obtain a better treatment effect by comparing the oil-containing sludge quality evaluation coefficient with the preset oil-containing sludge quality evaluation coefficient, when the relative difference is larger than the preset relative difference, the first pretreatment mode is selected to accelerate the decomposition speed of the sludge and improve the treatment efficiency, and when the relative difference is smaller than or equal to the preset relative difference, the second pretreatment mode is selected to provide a better oxidation environment, thereby being beneficial to improving the treatment effect of the sludge and enabling the oil-containing sludge to be decomposed more completely.
Further, the data processing module can adaptively determine the vacuum pressure in the reaction container according to the calculated second relative difference between the oil-containing sludge quality evaluation coefficient and the preset value, and promote the occurrence of anaerobic reaction and more precisely control the reaction rate by adjusting the vacuum pressure of the reaction container.
Further, the data processing module accurately determines a proper stirring rate according to the comparison result of the calculated viscosity of the oil-containing sludge and the preset value, and the stirring rate is adjusted to better disperse and mix the sludge, so that the processing effect and efficiency are improved.
Further, the invention adjusts the intensity of ultrasonic treatment in real time according to the content of the solid waste in the oily sludge so as to achieve the optimal preprocessing effect, when the content of the solid waste in the oily sludge is lower than a preset value, ultrasonic waves can penetrate more easily, the preprocessing can be completed by adopting lower ultrasonic power, when the content of the solid waste in the oily sludge is higher than the preset value, the ultrasonic waves are difficult to completely penetrate, the effect of complete preprocessing can be achieved by adopting higher ultrasonic power, and the cavitation effect and the shearing effect of the ultrasonic waves are stronger by adopting higher ultrasonic power, so that the oily sludge is completely preprocessed.
Furthermore, the oxidation strength of biochemical treatment is adjusted in real time according to the oil content in the oil-containing sludge so as to achieve the optimal preprocessing effect, when the oil content in the oil-containing sludge is lower than a preset value, the oil-containing sludge is easy to biochemically oxidize, the requirement of biochemical reaction can be met by adopting lower oxygen addition, the energy loss caused by excessive oxygen is avoided, when the oil content in the oil-containing sludge is higher than the preset value, the oil-containing sludge is difficult to completely biochemically oxidize, and a higher amount of oxygen is needed to achieve the complete reaction, and at the moment, the higher oxygen addition is adopted to provide more sufficient oxygen so that the biochemical reaction can be completely performed, thereby completely preprocessing the oil-containing sludge.
Further, the invention optimizes the subsequent treatment in real time according to the oil content condition in the oil-containing sludge after the pretreatment to achieve the optimal treatment effect, and when the residual oil content of the oil-containing sludge after the pretreatment is higher than a preset value, the pretreatment does not achieve the satisfactory effect, the oil-containing sludge also needs to be further treated, and at the moment, the stirring rate is increased to accelerate the stirring intensity, the treatment efficiency is improved, and the residual oil content is further reduced.
Further, the stirring speed is adjusted in real time according to the difference between the residual oil content and the target oil content to achieve the optimal treatment effect, when the difference between the residual oil content and the target oil content is smaller than or equal to a preset value, a smaller adjusting coefficient is adopted to adjust the stirring speed, excessive increase of stirring strength is avoided, when the difference between the residual oil content and the target oil content is larger than the preset value, a larger difference between the treatment effect and the expected target is indicated, the stirring speed needs to be further increased, and at the moment, the larger adjusting coefficient is adopted to adjust the stirring speed, so that the stirring speed is increased, the stirring effect is enhanced, and the difference between the residual oil content and the target oil content is reduced.
Drawings
FIG. 1 is a flow chart of a biological process-based oily sludge treatment process in accordance with an embodiment of the present invention;
FIG. 2 is a block diagram of an apparatus for applying a biological process-based oily sludge treatment process according to an embodiment of the present invention;
in the figure, a 1-vacuum pump, a 2-oxygenerator, a 3-ultrasonic generator, a 4-stirrer, a 5-storage tank and a 6-reaction container.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1 and 2, fig. 1 is a flowchart of a biological method-based oily sludge treatment method according to an embodiment of the invention; FIG. 2 is a block diagram of an apparatus for applying a biological method-based oily sludge treatment method according to an embodiment of the present invention.
The embodiment of the invention discloses a biological method-based oily sludge treatment method, which comprises the following steps of,
step S1, a data acquisition module acquires the oil content A, the organic matter content B, the water content C, the viscosity N and the solid waste content Y of oil-containing sludge;
step S2, the data processing module calculates a quality evaluation coefficient P of the oil-containing sludge according to the data acquired by the data acquisition module;
step S3, the data processing module determines a processing mode of the oil-containing sludge according to a quality evaluation coefficient P of the oil-containing sludge;
step S4, when the data processing module determines that the treatment mode of the oily sludge is the first treatment mode, the data processing module determines a preprocessing mode of the oily sludge according to a first relative difference delta P1;
when the data processing module determines that the treatment mode of the oily sludge is the second treatment mode, the data processing module determines the vacuum pressure in the reaction container according to a second relative difference delta P2;
and S5, when the oil content of the oily sludge is in a preset condition, the data processing module determines that the treatment of the oily sludge is completed and conveys the oily sludge to a storage tank.
In the embodiment of the invention, the preset condition is that the oil content of the oil-containing sludge is less than or equal to 5%.
In the embodiment of the invention, the oil content A is detected by an infrared oil detector, the organic matter content B is detected by a TOC total organic carbon analyzer, the water content C is detected by a water content detector, the viscosity N is detected by a rotary viscometer, and the solid waste content Y is detected by a gas chromatograph-mass spectrometer.
Specifically, the formula for calculating the oil-containing sludge quality evaluation coefficient P by the data processing module is as follows
Wherein Ai represents the oil content of the ith oil-containing sludge sample, bi represents the organic content of the ith oil-containing sludge sample, ci represents the moisture content of the ith oil-containing sludge sample, N i represents the viscosity of the ith oil-containing sludge sample, yi represents the solid waste content of the ith oil-containing sludge sample, n represents the number of samples collected, and i is an integer of 1 or more.
Specifically, the data processing module determines a processing mode of the oil-containing sludge according to a comparison result of a quality evaluation coefficient P of the oil-containing sludge and a preset quality evaluation coefficient P0;
if P is less than or equal to P0, the data processing module determines that the processing mode of the oily sludge is a first processing mode;
if P is more than P0, the data processing module determines that the treatment mode of the oil-containing sludge is a second treatment mode;
the first treatment mode is to pretreat the oily sludge and add bacillus into the oily sludge, and the second treatment mode is to vacuum treat the reaction vessel and add methane bacteria and acetic acid bacteria into the oily sludge for stirring.
In the embodiment of the invention, the preset oil-containing sludge quality evaluation coefficient P0 is obtained by adopting a first treatment mode to treat 10 oil-containing sludge samples, calculating the quality evaluation coefficient P of the oil-containing sludge samples when the residual oil content of the oil-containing sludge is 10%, and taking an average value.
Specifically, the invention adopts a matched treatment mode according to the actual properties of the oil-containing sludge, improves the removal efficiency of grease and organic matters, establishes a model between a quality evaluation coefficient and the treatment mode, and realizes the accurate and dynamic control of sludge treatment.
Specifically, when the data processing module determines that the treatment mode of the oily sludge is the first treatment mode, the data processing module calculates a first relative difference delta P1 between an oily sludge quality evaluation coefficient P and a preset oily sludge quality evaluation coefficient P0, determines a pre-processing mode of the oily sludge according to a comparison result of the first relative difference delta P1 and the preset first relative difference delta P01, and sets delta P1= (P0-P)/P0;
if delta P1 > -delta P01, the data processing module determines that the pretreatment mode of the oil-containing sludge is a first pretreatment mode;
if delta P1 is less than or equal to delta P01, the data processing module determines that the pretreatment mode of the oily sludge is a second pretreatment mode;
the first preprocessing mode is to stir the oily sludge while carrying out ultrasonic treatment, and the second preprocessing mode is to fill oxygen into a reaction vessel in advance and stir the oily sludge.
In the embodiment of the present invention, the preset first relative difference Δp01 has a value of 0.5, and a person skilled in the art can adjust the preset first relative difference Δp01 according to specific situations.
Specifically, the data processing module automatically selects the most suitable pretreatment mode to obtain a better treatment effect by comparing the oil-containing sludge quality evaluation coefficient with the preset oil-containing sludge quality evaluation coefficient, when the relative difference is larger than the preset relative difference, the first pretreatment mode is selected to accelerate the decomposition speed of the sludge and improve the treatment efficiency, and when the relative difference is smaller than or equal to the preset relative difference, the second pretreatment mode is selected to provide a better oxidation environment, thereby being beneficial to improving the treatment effect of the sludge and enabling the oil-containing sludge to be decomposed more completely.
Specifically, when the data processing module determines that the treatment mode of the oily sludge is the second treatment mode, the data processing module calculates a second relative difference Δp2 between an oily sludge quality evaluation coefficient P and a preset oily sludge quality evaluation coefficient P0, determines the vacuum pressure in the reaction vessel according to the comparison result of the second relative difference Δp2 and the preset second relative difference Δp02, and sets Δp2= (P2-P0)/P0;
if delta P2 is less than or equal to delta P02, the data processing module determines that the vacuum pressure in the reaction vessel is the first vacuum pressure;
if delta P2 > -delta P02, the data processing module determines the vacuum pressure in the reaction vessel as a second vacuum pressure;
wherein the first vacuum pressure is 0.8atm and the second vacuum pressure is 0.5atm.
In the embodiment of the present invention, the preset second relative difference Δp02 is set to 0.5, and a person skilled in the art may adjust the preset second relative difference Δp02 according to specific situations.
Specifically, the data processing module can adaptively determine the vacuum pressure in the reaction container according to the calculated second relative difference between the oil-containing sludge quality evaluation coefficient and the preset value, and promote the occurrence of anaerobic reaction and more precisely control the reaction rate by adjusting the vacuum pressure of the reaction container.
Specifically, when the data processing module determines to process the oily sludge in a corresponding processing mode, the data processing module determines the stirring rate Vi for stirring the oily sludge according to the comparison result of the viscosity N of the oily sludge and the preset viscosity N0;
if N is less than or equal to N0, the data processing module determines that the stirring rate for stirring the oily sludge is a first stirring rate V1;
if N is more than N0, the data processing module determines that the stirring rate for stirring the oily sludge is the second stirring rate V2;
wherein the first stirring speed V1 is 30rpm, and the second stirring speed V2 is 60rpm.
In the embodiment of the invention, the preset viscosity N0 is obtained by taking 10 parts of the oily sludge to detect the viscosity and calculating the average value according to the condition that the oil content of the oily sludge is 50%, and the viscosity N of the oily sludge is measured according to a rotational viscometer.
Specifically, the data processing module accurately determines a proper stirring rate according to the comparison result of the calculated viscosity of the oily sludge and the preset value, and the stirring rate is adjusted to better disperse and mix the sludge, so that the processing effect and efficiency are improved.
Specifically, when the data processing module determines that the preprocessing mode of the oil-containing sludge is the first preprocessing mode, the data processing module determines ultrasonic power of ultrasonic waves according to a comparison result of the solid waste content Y in the oil-containing sludge and the preset solid waste content Y0;
if Y is less than or equal to Y0, the data processing module determines that the ultrasonic power of the ultrasonic wave is the first ultrasonic power;
if Y is more than Y0, the data processing module determines that the ultrasonic power of the ultrasonic wave is the second ultrasonic power;
wherein the first ultrasonic power is 2000W and the second ultrasonic power is 3000W.
In the embodiment of the invention, the content Y of the solid waste is detected by a gas chromatograph-mass spectrometer, the preset value of the content Y0 of the solid waste is 60%, and the preset content Y0 of the solid waste can be adjusted according to specific conditions by a person skilled in the art.
Specifically, the invention adjusts the intensity of ultrasonic treatment in real time according to the content of the solid waste in the oily sludge so as to achieve the optimal preprocessing effect, when the content of the solid waste in the oily sludge is lower than a preset value, ultrasonic waves can penetrate more easily, the preprocessing can be completed by adopting lower ultrasonic power, when the content of the solid waste in the oily sludge is higher than the preset value, the ultrasonic waves are difficult to completely penetrate, the effect of complete preprocessing can be achieved by adopting higher ultrasonic power, and the cavitation effect and the shearing effect of the ultrasonic waves are stronger by adopting higher ultrasonic power, so that the oily sludge is completely preprocessed.
Specifically, when the data processing module determines that the preprocessing mode of the oil-containing sludge is the second preprocessing mode, the data processing module determines the oxygen addition amount of adding oxygen into the reverse container according to the comparison result of the oil content A in the oil-containing sludge and the preset oil content A0;
if A is less than or equal to A0, the data processing module determines that the oxygen addition amount is a first oxygen addition amount;
if A is more than A0, the data processing module determines that the oxygen addition amount is a second oxygen addition amount;
wherein the first oxygen addition is 2 times of the chemical oxygen demand, and the second oxygen addition is 3 times of the chemical oxygen demand, and in the embodiment of the invention, the chemical oxygen demand is detected by a COD detector.
In the embodiment of the invention, the oil content A is detected according to an infrared analyzer, the preset oil content A0 has a value of 40%, and a person skilled in the art can adjust the preset oil content A0 according to specific conditions.
Specifically, the oxidation strength of biochemical treatment is adjusted in real time according to the oil content in the oil-containing sludge so as to achieve the optimal preprocessing effect, when the oil content in the oil-containing sludge is lower than a preset value, the oil-containing sludge is easy to biochemically oxidize, the requirement of biochemical reaction can be met by adopting lower oxygen addition, the energy loss caused by excessive oxygen is avoided, when the oil content in the oil-containing sludge is higher than the preset value, the oil-containing sludge is difficult to completely biochemically oxidize, and the complete reaction can be achieved by adopting higher oxygen addition so as to provide more sufficient oxygen to completely perform the biochemical reaction, thereby completely preprocessing the oil-containing sludge.
Specifically, after the oily sludge is treated according to the corresponding treatment mode determined by the data treatment module, the data treatment module determines whether to adjust the stirring rate Vi of the oily sludge according to the comparison result of the residual oil content X and the preset residual oil content X0;
if X is less than or equal to X0, the data processing module determines that the stirring rate Vi of the oily sludge is not adjusted;
if X is more than X0, the data processing module determines to adjust the stirring rate Vi of the oily sludge;
in the embodiment of the invention, the residual oil content X is detected according to an infrared analyzer, the preset residual oil content X0 has a value of 5%, and a person skilled in the art can adjust the preset residual oil content X0 according to specific conditions.
Specifically, the invention optimizes the subsequent treatment in real time according to the oil content in the oil-containing sludge after the pretreatment to achieve the optimal treatment effect, and when the residual oil content of the oil-containing sludge after the pretreatment is higher than a preset value, the pretreatment does not achieve the satisfactory effect, the oil-containing sludge also needs to be further treated, and at the moment, the stirring rate is increased to accelerate the stirring intensity, the treatment efficiency is improved, and the residual oil content is further reduced.
Specifically, when the data processing module determines to adjust the stirring rate Vi of the oil-containing sludge, the data processing module calculates a difference Δx between the residual oil content X and a preset residual oil content X0, and determines an adjustment coefficient ki for adjusting the stirring rate Vi of the oil-containing sludge according to a comparison result of the difference Δx and the preset difference Δx0, wherein the data processing module is provided with a first adjustment coefficient k1, a second adjustment coefficient k2 and a setting Δx=x-X0;
if DeltaX is less than or equal to DeltaX 0, the data processing module determines to adjust the stirring rate Vi of the oil-containing sludge by a first adjustment coefficient k 1;
if DeltaX > DeltaX0, the data processing module determines to adjust the stirring rate Vi of the oil-containing sludge by a second adjusting coefficient k 2;
the adjusted stirring rate was set to v10=v1×ki, v20=v2×ki, i=1, 2.
Wherein the first adjustment coefficientSecond adjustment coefficient->
In the embodiment of the present invention, the preset difference Δx0 has a value of 5%, and a person skilled in the art can adjust the preset difference Δx0 according to specific situations.
Specifically, the stirring rate is adjusted in real time according to the difference between the residual oil content and the target oil content to achieve the optimal treatment effect, when the difference between the residual oil content and the target oil content is smaller than or equal to a preset value, a smaller adjusting coefficient is adopted to adjust the stirring rate, excessive increase of stirring strength is avoided, when the difference between the residual oil content and the target oil content is larger than the preset value, a larger difference between the treatment effect and the expected target is indicated, the stirring rate needs to be further increased, and at the moment, the larger adjusting coefficient is adopted to adjust the stirring rate, so that the stirring rate is increased, the stirring effect is enhanced, and the difference between the stirring effect and the treatment target is reduced.
The device for applying the biological method-based oily sludge treatment method in the embodiment of the invention comprises the following components:
a vacuum pump 1 arranged at the upper left of the inner wall of the reaction vessel 6 for evacuating the reaction vessel 6;
an oxygenerator 2 arranged at the left and right upper part of the inner wall of the reaction vessel 6 for producing oxygen and delivering the oxygen into the reaction vessel 6;
the ultrasonic generator 3 is arranged at the left lower part of the inner wall of the reaction container 6 and is used for generating ultrasonic waves to carry out ultrasonic treatment on the oily sludge;
the stirrer 4 is arranged at the bottom of the reaction container 6 and is used for stirring the oily sludge;
a storage tank 5 connected to the reaction vessel 6 for storing the treated oily sludge.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. 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 (10)
1. A biological method-based oily sludge treatment method, characterized by comprising the steps of:
step S1, a data acquisition module acquires the oil content, organic matter content, moisture content, viscosity and solid waste content of oil-containing sludge;
s2, calculating a quality evaluation coefficient of the oil-containing sludge by the data processing module according to the data acquired by the data acquisition module;
s3, the data processing module determines a processing mode of the oil-containing sludge according to the quality evaluation coefficient of the oil-containing sludge;
step S4, when the data processing module determines that the treatment mode of the oily sludge is the first treatment mode, the data processing module determines the preprocessing mode of the oily sludge according to the first relative difference;
when the data processing module determines that the treatment mode of the oily sludge is the second treatment mode, the data processing module determines the vacuum pressure in the reaction container according to the second relative difference;
step S5, when the oil content of the oily sludge is in a preset condition, the data processing module determines that the treatment of the oily sludge is completed and conveys the oily sludge to a storage tank;
in the step S4, the data processing module determines a plurality of preprocessing modes for the oily sludge according to the comparison result of the first relative difference between the quality evaluation coefficient of the oily sludge and the preset first relative difference, where the preprocessing modes include a first preprocessing mode for stirring the oily sludge while performing ultrasonic treatment and a second preprocessing mode for stirring the oily sludge after filling oxygen into the reaction vessel in advance.
2. The biological method-based oily sludge treatment method according to claim 1, wherein the formula for calculating the oily sludge quality evaluation coefficient P by the data processing module is
Wherein Ai represents the oil content of the ith oil-containing sludge sample, bi represents the organic content of the ith oil-containing sludge sample, ci represents the moisture content of the ith oil-containing sludge sample, ni represents the viscosity of the ith oil-containing sludge sample, yi represents the solid waste content of the ith oil-containing sludge sample, n represents the number of collected samples, and i is an integer greater than or equal to 1.
3. The biological method-based oily sludge treatment method according to claim 2, wherein the data processing module determines a plurality of treatment modes of the oily sludge according to the comparison result of the quality evaluation coefficient P of the oily sludge and the preset quality evaluation coefficient, and the plurality of treatment modes comprise a first treatment mode of preprocessing the oily sludge and adding bacillus into the oily sludge, and a second treatment mode of vacuum-treating a reaction vessel and adding methane bacteria and acetic acid bacteria into the oily sludge for stirring.
4. The biological method of claim 3, wherein when the data processing module determines that the treatment mode of the oily sludge is the first treatment mode, the data processing module determines a pretreatment mode of the oily sludge according to a comparison result of a first relative difference and a preset first relative difference, wherein the pretreatment mode comprises a first pretreatment mode of the oily sludge when the first relative difference is greater than the preset first relative difference and a second pretreatment mode of the oily sludge when the first relative difference is less than or equal to the preset first relative difference.
5. The biological method of claim 4, wherein when the data processing module determines that the treatment mode of the oily sludge is the second treatment mode, the data processing module determines a plurality of vacuum pressures in the reaction vessel according to a comparison result of a second relative difference between the oily sludge quality evaluation coefficient and a preset second relative difference.
6. The biological method of claim 5, wherein when the data processing module determines that the oily sludge is processed in a corresponding processing manner, the data processing module determines a plurality of stirring rates for stirring the oily sludge according to a comparison result of a viscosity of the oily sludge and a preset viscosity.
7. The biological method-based oil sludge treatment method according to claim 6, wherein when the data processing module determines that the pretreatment mode of the oil sludge is the first pretreatment mode, the data processing module determines a plurality of ultrasonic powers of ultrasonic waves according to a comparison result of the solid waste content in the oil sludge and a preset solid waste content.
8. The biological method-based oil sludge treatment method according to claim 6, wherein when the data processing module determines that the pretreatment mode of the oil sludge is the second pretreatment mode, the data processing module determines a plurality of oxygen addition amounts for adding oxygen into the reverse container according to a comparison result of the oil content in the oil sludge and a preset oil content.
9. The biological method-based oily sludge treatment method according to claim 6 or 7, wherein when the treatment of the oily sludge is completed according to the corresponding treatment mode determined by the data processing module, the data processing module determines whether to adjust the stirring rate of the oily sludge according to the comparison result of the residual oil content and the preset residual oil content.
10. The biological method of claim 9, wherein when the data processing module determines that the stirring rate of the oil-containing sludge is to be adjusted, the data processing module calculates a difference between the remaining oil content and a preset remaining oil content and determines a plurality of adjustment coefficients for adjusting the stirring rate of the oil-containing sludge based on a comparison of the difference and the preset difference, the plurality of adjustment coefficients including a first adjustment coefficientSecond adjustment coefficient->
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