CN110981115A - Waste emulsion treatment device and waste emulsion treatment method thereof - Google Patents
Waste emulsion treatment device and waste emulsion treatment method thereof Download PDFInfo
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- 239000000839 emulsion Substances 0.000 title claims abstract description 125
- 239000002699 waste material Substances 0.000 title claims abstract description 119
- 238000000034 method Methods 0.000 title claims abstract description 21
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 claims abstract description 94
- 238000006243 chemical reaction Methods 0.000 claims abstract description 58
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000000926 separation method Methods 0.000 claims abstract description 37
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 15
- 230000003647 oxidation Effects 0.000 claims abstract description 12
- 238000007667 floating Methods 0.000 claims abstract description 8
- 239000002351 wastewater Substances 0.000 claims description 25
- 239000012528 membrane Substances 0.000 claims description 22
- 238000004062 sedimentation Methods 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000010802 sludge Substances 0.000 claims description 15
- 239000004575 stone Substances 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 12
- 229920002401 polyacrylamide Polymers 0.000 claims description 12
- 238000007790 scraping Methods 0.000 claims description 9
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 8
- 229910001448 ferrous ion Inorganic materials 0.000 claims description 8
- 238000005273 aeration Methods 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 7
- 238000005245 sintering Methods 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 3
- 238000004945 emulsification Methods 0.000 claims description 2
- 239000003814 drug Substances 0.000 abstract description 23
- 239000003638 chemical reducing agent Substances 0.000 abstract description 9
- 238000004821 distillation Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000011550 stock solution Substances 0.000 abstract description 4
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 23
- 239000003921 oil Substances 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical group OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
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- 239000004094 surface-active agent Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
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- 230000015271 coagulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 238000007539 photo-oxidation reaction Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention relates to the field of wastewater treatment, and particularly discloses a waste emulsion treatment device and a waste emulsion treatment method thereof. The technical problems that the distillation process energy consumption is huge and the medicament consumption of an oxidation mode is large in the emulsion treatment of the existing emulsion treatment device, and the comprehensive treatment cost is high are mainly solved. The invention relates to a waste emulsion treatment device, which comprises the following components in sequential connection: the oil-water separation system is used for carrying out oil-water separation on floating oil in the waste emulsion; the iron-carbon micro-electrolysis reaction system is used for carrying out iron-carbon micro-electrolysis reaction on the waste emulsion; the Fenton reaction system is used for carrying out Fenton oxidation on the waste emulsion; the online instrument is arranged outside the waste emulsion treatment device; PLC automatic control. The iron-carbon micro-electrolysis reaction and the Fenton reaction are combined with each other, the oxidized emulsion stock solution can be directly decomposed and oxidized, an additional distillation process is not needed, a large amount of electric energy is saved, a reducing agent is not needed to be added additionally, a large amount of medicament cost is saved, and the comprehensive treatment cost is greatly reduced.
Description
Technical Field
The invention relates to the field of wastewater treatment, in particular to a waste emulsion treatment device and a waste emulsion treatment method thereof.
Background
The emulsion mainly contains machine oil and surfactant, and is prepared by diluting the emulsion with water and adding emulsifier according to the need, after the emulsion is repeatedly used for many times, rancidity with different degrees can occur, the performance is reduced, and the emulsion needs to be replaced by new emulsion regularly, so a large amount of waste emulsion is generated, the emulsion is characterized by a plurality of varieties, high oil content, CODcr up to tens of thousands or even hundreds of thousands, and contains a plurality of toxic substances, the treatment difficulty is large, the waste emulsion has the harm of general oily wastewater, and due to the action of the surfactant, if proper treatment is not carried out, once the waste emulsion enters the environment, serious harm can be caused to water, soil and the like, the mechanical oil is highly dispersed in the water, animals and plants and aquatic organisms are easier to absorb, and the surfactant is harmful to the organisms, and can also dissolve some water-insoluble toxic substances, therefore, the treatment of waste emulsion is not slow enough.
The existing treatment processes of waste emulsion comprise demulsification separation, low-temperature evaporation, membrane treatment, advanced oxidation, biochemical treatment and the like. At present, common demulsification methods comprise heating, acid adding, salt adding and the like, but the methods have certain defects, can generate a large amount of volatile organic compounds and cause secondary pollution; the acid addition is only applicable to a small range, and the salt addition method is adopted to treat the emulsion, so that the salt concentration in the waste liquid is increased, and the post-treatment is not facilitated; the low-temperature evaporation technology has large energy consumption, and hundreds of even thousands of kilowatts are needed for processing one ton of waste liquid; although the membrane treatment separation effect is good, the membrane treatment separation effect has certain requirements on the quality of inlet water, and the improper pretreatment or non-pretreatment can cause serious blockage and frequent cleaning of the membrane, thereby reducing the service life of the membrane.
Also, as the oil removal, distillation, oxidation, biochemistry and coagulation process adopted by the "a very high concentration emulsion treatment device" of the chinese patent CN 205473247U, the distillation process has huge energy consumption, and the oxidation modes such as the conventional fenton oxidation, ozone oxidation, electrooxidation, photooxidation and the like have large medicament consumption, large energy consumption and high comprehensive treatment cost.
The waste emulsion is treated by the advanced oxidation technology, so that the chromaticity of the waste water can be greatly reduced, a plurality of organic matters which are difficult to degrade are decomposed, a plurality of toxic and harmful organic matters can be oxidized and damaged, and the biodegradability of the waste water is improved; the biochemical treatment technology has wide application range and low operation cost, and is widely applied to the treatment of various waste water.
Disclosure of Invention
The invention aims to provide a waste emulsion treatment device, which aims to solve the technical problems of high energy consumption of a distillation process and high comprehensive treatment cost caused by high medicament consumption of an oxidation mode in emulsion treatment of the conventional emulsion treatment device.
The second purpose of the invention is to provide a waste emulsion treatment method based on the waste emulsion treatment device.
In order to achieve one of the purposes, the invention adopts the following technical scheme:
the utility model provides a useless emulsion processing apparatus, includes as follows and connects gradually:
the oil-water separation system 1 comprises oil-water separation equipment, and the oil-water separation system 1 is used for carrying out oil-water separation on floating oil in the waste emulsion;
the iron-carbon micro-electrolysis reaction system 2 comprises an iron-carbon reactor, and the iron-carbon micro-electrolysis reaction system 2 is used for carrying out iron-carbon micro-electrolysis reaction on the waste emulsion;
the Fenton reaction system 3 comprises a Fenton reactor, and the Fenton reaction system 3 is used for carrying out Fenton oxidation on the waste emulsion;
the online instrument is arranged outside the waste emulsion treatment device;
the waste emulsion treatment device further comprises a PLC automatic controller, wherein the PLC automatic controller is respectively connected with the oil-water separation system 1, the iron-carbon micro-electrolysis reaction system 2 and the Fenton reaction system 3.
By adopting the technical means, the iron-carbon micro-electrolysis reaction system 2 and the Fenton reaction system 3 are arranged, on one hand, the iron-carbon micro-electrolysis reaction in the iron-carbon micro-electrolysis reaction system 2 and the Fenton oxidation reaction in the Fenton reaction system 3 are combined with each other, the emulsion stock solution can be directly decomposed and oxidized, no additional distillation process is needed, and a large amount of electric energy can be saved; on the other hand, the Fenton reaction reducing agent in the Fenton reaction system 3 utilizes a large amount of ferrous ions generated by the iron-carbon micro-electrolysis reaction in the iron-carbon micro-electrolysis reaction system, and does not need to add a reducing agent additionally, so that a large amount of medicament cost can be saved.
According to an embodiment of the present invention, wherein the iron-carbon micro-electrolysis reaction system 2 comprises:
the fan is used for aerating the iron-carbon reactor, and the gas is ordinary air;
and the slag scraping device 7 is arranged at the top of the iron-carbon reactor, and the slag scraping device 7 is used for removing scum generated in the reaction process. Adopt above-mentioned technical means, through the fan to carry out the aeration in the indisputable carbon reactor for the medicament of adding can fully contact with indisputable carbon stone and useless emulsion, simultaneously, scrape the dross that sediment device 7 got rid of the reaction process production, promote going on of reaction, both combined action, thereby make indisputable carbon microelectrolysis reaction can fully go on.
According to one embodiment of the invention, the fan is one of a Roots fan or a magnetic suspension fan; and the bottom of the iron-carbon reactor is provided with a gas distribution device for ensuring the uniform aeration of the fan. Adopt above-mentioned technical means, the gas distribution device that iron carbon reactor bottom set up ensures the fan aeration is even to promote the abundant contact of the medicament of adding and iron carbon stone and useless emulsion, promote the abundant of little electrolysis reaction of iron carbon to a certain extent and go on.
According to one embodiment of the invention, wherein the iron carbon reactor comprises:
the filler is iron-carbon stone, and the iron-carbon stone is selected from high-temperature sintering fillers;
the first metering pump is an acid-proof diaphragm pump and is controlled by the online instrument and the PLC automatic controller. By adopting the technical means, the iron-carbon stone in the iron-carbon reactor is selected from high-temperature sintering filler, so that the iron-carbon stone is not hardened and passivated in the using process, and the service life is long; the PLC automatic controller is matched with the online instrument to automatically control the first metering pump to feed the medicament, so that the automatic and accurate feeding of the medicament is realized.
According to an embodiment of the present invention, wherein the fenton reactor comprises:
the defoaming device is arranged at the top of the Fenton reactor;
and the second metering pump is an acid-proof diaphragm pump, and is controlled by the online instrument and the PLC automatic controller. By adopting the technical means, the defoaming device at the top of the Fenton reactor eliminates bubbles generated by reaction, the reaction is promoted to be carried out, and the PLC automatic controller is matched with the on-line instrument to automatically control the metering pump II to feed the medicament, so that the automatic and accurate feeding of the medicament is realized.
According to an embodiment of the present invention, the method further comprises, connected to the fenton reaction system 3 in sequence:
the sedimentation tank 4 comprises a third metering pump, the third metering pump is an alkali-resistant diaphragm pump, and the third metering pump is controlled by the online instrument and the PLC automatic controller;
the membrane treatment system 5 is used for carrying out membrane treatment on the waste emulsion;
and the biochemical treatment system 6 is used for performing biochemical treatment on the waste emulsion.
By adopting the technical means, the waste emulsion can respectively enter different reaction systems according to the water content of the waste emulsion after being reacted in the sedimentation tank 4, and if the waste emulsion has larger waste water content, the waste emulsion enters the biochemical treatment system 6 for biochemical treatment; if the amount of the wastewater is small, the wastewater enters a membrane treatment system 5 for membrane treatment; finally, the wastewater is discharged after reaching standards or is recycled.
In order to achieve the second purpose, the invention adopts the following technical scheme:
a waste emulsion treatment method based on a waste emulsion treatment device comprises the following steps:
the waste oil enters an oil-water separation system 1, oil-water separation equipment is used for carrying out oil-water separation on floating oil in the waste emulsion, and the separated waste oil is sent out for treatment or recycling;
the waste emulsion after oil-water separation enters an iron-carbon micro-electrolysis reaction system 2, waste acid is added into an iron-carbon reactor to adjust the pH of the waste emulsion to about 2-3, a large amount of ferrous ions are generated in the solution, and the waste emulsion reacts in the iron-carbon reactor for 90-120min and then enters a Fenton reaction system 3;
adding waste acid into a Fenton reactor to adjust the pH value of the solution to 3-4, then automatically adding a hydrogen peroxide solution into the solution by a PLC (programmable logic controller) controlled metering pump II, reacting the waste emulsion in the Fenton reactor for 60min, and then feeding the waste emulsion into a sedimentation tank 4;
a metering pump is controlled by a PLC (programmable logic controller) to automatically add sodium hydroxide into the solution to adjust the pH value of the solution to 8-9, then add an appropriate amount of PAC (polyaluminium chloride) solution and PAM (polyacrylamide) solution into the solution, and determine the adding amount by a small test;
if the amount of the wastewater is large, entering a biochemical treatment system 6 for biochemical treatment; if the amount of the wastewater is small, the wastewater enters a membrane treatment system 5 for membrane treatment;
the wastewater reaches the standard and is discharged or recycled.
According to an embodiment of the present invention, further, after the waste emulsion after oil-water separation enters the iron-carbon micro-electrolysis reaction system 2, the blower aerates the iron-carbon reactor, and the gas distribution device disposed at the bottom of the iron-carbon reactor distributes gas, so that the blower aerates uniformly, and the waste emulsion reacts fully in the iron-carbon micro-electrolysis reaction system 2.
According to an embodiment of the present invention, further, when the waste emulsion enters the iron-carbon micro-electrolysis reaction system 2 for reaction, the scum scraping device 7 removes scum generated in the reaction process.
According to an embodiment of the present invention, further, after the waste emulsion is reacted in the sedimentation tank 4, a large amount of sludge is obtained, and the sludge enters the sludge dewatering system 8, and is subjected to dewatering treatment to make the sludge into a sludge cake for outward transportation.
Has the advantages that:
according to the waste emulsion treatment device and the waste emulsion treatment method, the iron-carbon micro-electrolysis reaction system 2 and the Fenton reaction system 3 are arranged, on one hand, the iron-carbon micro-electrolysis reaction in the iron-carbon micro-electrolysis reaction system 2 and the Fenton oxidation reaction in the Fenton reaction system 3 are combined with each other, the emulsion stock solution can be directly decomposed and oxidized, a distillation process is not needed, and a large amount of electric energy can be saved; on the other hand, the Fenton reaction reducing agent in the Fenton reaction system 3 utilizes a large amount of ferrous ions generated by the iron-carbon micro-electrolysis reaction in the iron-carbon micro-electrolysis reaction system, and does not need to add a reducing agent additionally, so that a large amount of medicament cost can be saved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of a waste emulsion treatment apparatus according to the present invention.
In the drawings:
1. oil-water separation system 2, iron-carbon micro-electrolysis reaction system 3 and Fenton reaction system
4. Sedimentation tank 5, membrane processing system 6, biochemical treatment system
7. Slag scraping device 8 and sludge dewatering system
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are illustrative of some, but not all embodiments of the invention, and are intended to be exemplary only and not limiting of the invention, and that all other embodiments obtained by those skilled in the art without making any inventive change thereto will fall within the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one skilled in the art that the embodiments may be practiced without these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.
The first embodiment is as follows:
as shown in fig. 1, a waste emulsion treatment device comprises the following components connected in sequence:
the oil-water separation system 1 comprises oil-water separation equipment, and the oil-water separation system 1 is used for carrying out oil-water separation on floating oil in the waste emulsion; the iron-carbon micro-electrolysis reaction system 2 comprises an iron-carbon reactor, and the iron-carbon micro-electrolysis reaction system 2 is used for carrying out iron-carbon micro-electrolysis reaction on the waste emulsion; the Fenton reaction system 3 comprises a Fenton reactor, and the Fenton reaction system 3 is used for carrying out Fenton oxidation on the waste emulsion; the online instrument is arranged outside the waste emulsion treatment device; the waste emulsion treatment device further comprises a PLC automatic controller, wherein the PLC automatic controller is respectively connected with the oil-water separation system 1, the iron-carbon micro-electrolysis reaction system 2 and the Fenton reaction system 3.
The oil-water separation equipment can be an oil separation tank, a floating oil collector and the like, and the waste oil separated from the waste emulsion is sent out for treatment or recycling, so that the pollution and the waste are reduced.
By adopting the technical means, the iron-carbon micro-electrolysis reaction system 2 and the Fenton reaction system 3 are arranged, on one hand, the iron-carbon micro-electrolysis reaction in the iron-carbon micro-electrolysis reaction system 2 and the Fenton oxidation reaction in the Fenton reaction system 3 are combined with each other, the emulsion stock solution can be directly decomposed and oxidized, no additional distillation process is needed, and a large amount of electric energy can be saved; on the other hand, the Fenton reaction reducing agent in the Fenton reaction system 3 utilizes a large amount of ferrous ions generated by the iron-carbon micro-electrolysis reaction in the iron-carbon micro-electrolysis reaction system, and does not need to add a reducing agent additionally, so that a large amount of medicament cost can be saved.
The iron-carbon micro-electrolysis reaction system 2 includes: the blower is one of a Roots blower or a magnetic suspension blower, the blower is used for aerating the iron-carbon reactor, the gas is common air, and the gas-water ratio is 3: 1; and the slag scraping device 7 is arranged at the top of the iron-carbon reactor, the slag scraping device 7 is used for removing scum generated in the reaction process, and the gas distribution device is arranged at the bottom of the iron-carbon reactor and is used for ensuring that the fan is uniformly aerated. Adopt above-mentioned technical means, through the fan to carry out the aeration in the indisputable carbon reactor for the medicament of adding can fully contact with indisputable carbon stone and useless emulsion, simultaneously, scrape the dross that sediment device 7 got rid of the reaction process production, promote going on of reaction, both combined action, thereby make indisputable carbon microelectrolysis reaction can fully go on. The gas distribution device that iron carbon reactor bottom set up ensures the fan aeration is even to promote the abundant contact of the medicament of adding with iron carbon stone and useless emulsion, promote the abundant of the little electrolysis reaction of iron carbon to a certain extent and go on. The iron-carbon reactor comprises: the filler is iron-carbon stone, the iron-carbon stone is selected from high-temperature sintering filler, the iron-carbon stone in the iron-carbon reactor is selected from high-temperature sintering filler, in the embodiment, the filler iron-carbon stone in the iron-carbon reactor has the specific gravity of 1.3-1.6 tons/m3The specific surface area is 1.2 square meters per gram, and the filling amount of the filler is as follows: weight of wastewater: filler weight 1: 1, the high-temperature sintered iron-carbon stone with the specification is used as a filler, and is not hardened or passivated in the use process and long in service life; first measuring pump, first measuring pump is acidproof diaphragm pump, first measuring pump passes through on-line instrument table with PLC automatic control controls, and PLC automatic control cooperates on-line instrument automatic control measuring pump and adds the medicament, realizes the automatic accurate medicament of throwing, the medicament is the spent acid, generally is sulphuric acid, and concentration about 30%, and PH adjusts and throws through on-line instrument and PLC automatic control measuring pump, realizes the automatic accurate medicament of throwing, adds the spent acid in the indisputable carbon reactor and adjusts useless emulsion PH to about 2-3, produces a large amount of ferrous ions in the solution, and useless emulsion goes into fenton reaction system 3 after reacting 90-120min in the indisputable carbon reactor. 30 percent of sulfuric acid by adopting the technical meansThe iron-carbon microelectrolysis reaction can generate a large amount of ferrous ions which are used as a Fenton reaction reducing agent in a Fenton reaction system in the next step, and the reducing agent does not need to be added additionally, so that a large amount of medicament cost is saved, and the comprehensive treatment cost is greatly reduced.
In the fenton reaction system 3, the fenton reactor includes: the defoaming device is arranged at the top of the Fenton reactor; and the second metering pump is an acid-proof diaphragm pump, and is controlled by the online instrument and the PLC automatic controller. By adopting the technical means, the defoaming device at the top of the Fenton reactor eliminates bubbles generated by reaction, the reaction is promoted to be carried out, and the PLC automatic controller is matched with the on-line instrument to automatically control the metering pump II to feed the medicament, so that the automatic and accurate feeding of the medicament is realized. Adding a reagent into the Fenton reaction system 3 to obtain waste acid, adjusting the pH of the solution to 3-4, wherein the waste acid is generally sulfuric acid and has a concentration of about 30%, and the pH adjustment is carried out by adding the waste acid through an online instrument and a PLC (programmable logic controller) automatic control metering pump; and then, a PLC (programmable logic controller) controls a metering pump II to automatically add a hydrogen peroxide solution into the solution, and the waste emulsion reacts in a Fenton reactor for 60min and then enters a sedimentation tank 4.
The waste emulsion treatment device also comprises a Fenton reaction system 3 which is sequentially connected with the following components: the sedimentation tank 4 comprises a third metering pump, the third metering pump is an alkali-resistant diaphragm pump, and the third metering pump is controlled by the online instrument and the PLC automatic controller; the membrane treatment system 5 is used for carrying out membrane treatment on the waste emulsion; and the biochemical treatment system 6 is used for performing biochemical treatment on the waste emulsion. By adopting the technical means, the waste emulsion can respectively enter different reaction systems according to the water content of the waste emulsion after being reacted in the sedimentation tank 4, and if the waste emulsion has larger waste water content, the waste emulsion enters the biochemical treatment system 6 for biochemical treatment; if the amount of the wastewater is small, the wastewater enters a membrane treatment system 5 for membrane treatment; finally, the wastewater is discharged after reaching standards or is recycled.
Treating the emulsion by a Fenton reactor, then feeding the emulsion into a sedimentation tank 4, adjusting the pH value to 8-9, adding a medicament which is sodium hydroxide, dissolving solid sodium hydroxide into a 10% solution, adjusting the pH value by an online instrument and automatically controlling a metering pump III to add, wherein the metering pump III is an alkali-resistant diaphragm pump. After the emulsion enters a sedimentation tank 4 through a Fenton reaction system 3, a proper amount of PAC solution with the concentration of 3% and PAM solution with the concentration of 3 per mill are added into the sedimentation tank 4 through three-way feeding of an online instrument and a PLC (programmable logic controller) automatic control metering pump, and the adding amount is determined through a small test.
As mentioned above, PAC is polyaluminium chloride, which is a water purification material, an inorganic polymer coagulant, also called polyaluminium for short, PAM is polyacrylamide, which is a linear organic polymer and is a polymer water treatment flocculant product, which can specially adsorb suspended particles in water, and has the functions of bridging among particles, forming relatively large flocs of fine particles and accelerating the speed of precipitation, PAM has ① flocculation properties, PAM can enable suspended matters to play a role of flocculation through electric neutralization, ② adhesion can play a role of adhesion through physical and chemical actions, ③ thickening effect under neutral and acidic conditions, PAM is easy to hydrolyze if the pH value is more than 10, and the adding amount is determined through a small test.
A waste emulsion treatment method based on a waste emulsion treatment device comprises the following steps:
the waste oil enters an oil-water separation system 1, oil-water separation equipment is used for carrying out oil-water separation on floating oil in the waste emulsion, and the separated waste oil is sent out for treatment or recycling;
the waste emulsion after oil-water separation enters an iron-carbon micro-electrolysis reaction system 2, waste acid is added into an iron-carbon reactor to adjust the pH of the waste emulsion to about 2-3, a large amount of ferrous ions are generated in the solution, and the waste emulsion reacts in the iron-carbon reactor for 90-120min and then enters a Fenton reaction system 3;
adding waste acid into a Fenton reactor to adjust the pH value of the solution to 3-4, then automatically adding a hydrogen peroxide solution into the solution by a PLC (programmable logic controller) controlled metering pump II, reacting the waste emulsion in the Fenton reactor for 60min, and then feeding the waste emulsion into a sedimentation tank 4;
a metering pump is controlled by a PLC (programmable logic controller) to automatically add sodium hydroxide into the solution to adjust the pH value of the solution to 8-9, then add an appropriate amount of PAC (polyaluminium chloride) solution and PAM (polyacrylamide) solution into the solution, and determine the adding amount by a small test;
if the amount of the wastewater is large, entering a biochemical treatment system 6 for biochemical treatment; if the amount of the wastewater is small, the wastewater enters a membrane treatment system 5 for membrane treatment;
the wastewater reaches the standard and is discharged or recycled.
According to an embodiment of the present invention, further, after the waste emulsion after oil-water separation enters the iron-carbon micro-electrolysis reaction system 2, the blower aerates the iron-carbon reactor, and the gas distribution device disposed at the bottom of the iron-carbon reactor distributes gas, so that the blower aerates uniformly, and the waste emulsion reacts fully in the iron-carbon micro-electrolysis reaction system 2.
According to an embodiment of the present invention, further, when the waste emulsion enters the iron-carbon micro-electrolysis reaction system 2 for reaction, the scum scraping device 7 removes scum generated in the reaction process.
According to an embodiment of the present invention, further, after the waste emulsion is reacted in the sedimentation tank 4, a large amount of sludge is obtained, and the sludge enters the sludge dewatering system 8, and is subjected to dewatering treatment to make the sludge into a sludge cake for outward transportation.
Although the illustrative embodiments of the present invention have been described above to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the embodiments, and it is apparent to those skilled in the art that all the inventive concepts using the present invention are protected as long as they can be changed within the spirit and scope of the present invention as defined and defined by the appended claims.
Claims (10)
1. The utility model provides a useless emulsion processing apparatus, includes as follows and connects gradually:
the oil-water separation system (1) comprises oil-water separation equipment, and the oil-water separation system (1) is used for carrying out oil-water separation on floating oil in the waste emulsion;
the iron-carbon micro-electrolysis reaction system (2) comprises an iron-carbon reactor, and the iron-carbon micro-electrolysis reaction system (2) is used for carrying out iron-carbon micro-electrolysis reaction on the waste emulsion;
the Fenton reaction system (3) comprises a Fenton reactor, and the Fenton reaction system (3) is used for carrying out Fenton oxidation on the waste emulsion;
the online instrument is arranged outside the waste emulsion treatment device;
the waste emulsion treatment device further comprises a PLC automatic controller, wherein the PLC automatic controller is respectively connected with the oil-water separation system (1), the iron-carbon micro-electrolysis reaction system (2) and the Fenton reaction system (3).
2. The waste emulsion treatment apparatus according to claim 1, wherein the iron-carbon micro-electrolysis reaction system (2) comprises:
the fan is used for aerating the iron-carbon reactor, and the gas is ordinary air;
and the slag scraping device (7) is arranged at the top of the iron-carbon reactor, and the slag scraping device (7) is used for removing scum generated in the reaction process.
3. The waste emulsion treatment device according to claim 2, wherein the blower is one of a roots blower or a magnetic suspension blower;
and the bottom of the iron-carbon reactor is provided with a gas distribution device for ensuring the uniform aeration of the fan.
4. The apparatus of claim 1, wherein the iron-carbon reactor comprises:
the filler is iron-carbon stone, and the iron-carbon stone is selected from high-temperature sintering fillers;
the first metering pump is an acid-proof diaphragm pump and is controlled by the online instrument and the PLC automatic controller.
5. The apparatus of claim 1, wherein the Fenton reactor comprises:
the defoaming device is arranged at the top of the Fenton reactor;
and the second metering pump is an acid-proof diaphragm pump, and is controlled by the online instrument and the PLC automatic controller.
6. The waste emulsion treatment apparatus according to claim 1, further comprising a Fenton reaction system (3) connected in sequence:
the sedimentation tank (4) comprises a third metering pump, the third metering pump is an alkali-resistant diaphragm pump, and the third metering pump is controlled by the online instrument and the PLC automatic controller;
the membrane treatment system (5) is used for carrying out membrane treatment on the waste emulsion;
and the biochemical treatment system (6) is used for carrying out biochemical treatment on the waste emulsion.
7. A waste emulsion treatment method based on a waste emulsion treatment device comprises the following steps:
the waste oil enters an oil-water separation system (1), oil-water separation equipment is used for carrying out oil-water separation on floating oil in the waste emulsion, and the separated waste oil is sent out for treatment or recycling;
the waste emulsion after oil-water separation enters an iron-carbon micro-electrolysis reaction system (2), waste acid is added into an iron-carbon reactor to adjust the pH of the waste emulsion to about 2-3, a large amount of ferrous ions are generated in the solution, and the waste emulsion reacts in the iron-carbon reactor for 90-120min and then enters a Fenton reaction system (3);
adding waste acid into a Fenton reactor to adjust the pH value of the solution to 3-4, then automatically adding a hydrogen peroxide solution into the solution by controlling a metering pump II through a PLC (programmable logic controller), reacting the waste emulsion in the Fenton reactor for 60min, and then feeding the waste emulsion into a sedimentation tank (4);
a metering pump is controlled by a PLC (programmable logic controller) to automatically add sodium hydroxide into the solution to adjust the pH value of the solution to 8-9, then add an appropriate amount of PAC (polyaluminium chloride) solution and PAM (polyacrylamide) solution into the solution, and determine the adding amount by a small test;
if the amount of the wastewater is large, entering a biochemical treatment system (6) for biochemical treatment; if the amount of the wastewater is small, the wastewater enters a membrane treatment system (5) for membrane treatment;
the wastewater reaches the standard and is discharged or recycled.
8. The method for treating waste emulsion according to claim 7, further comprising aerating the iron-carbon reactor by a blower after the oil-water separated waste emulsion enters the iron-carbon micro-electrolysis reaction system (2), and distributing gas by a gas distribution device arranged at the bottom of the iron-carbon reactor, so that the aeration of the blower is uniform, and the waste emulsion is fully reacted in the iron-carbon micro-electrolysis reaction system (2).
9. The method for treating waste emulsion according to claim 7, further comprising the step of removing scum generated in the reaction process by a scum scraper (7) when the waste emulsion enters the iron-carbon micro-electrolysis reaction system (2) for reaction.
10. The method for treating waste emulsion as claimed in claim 7, further comprising the step of obtaining a large amount of sludge after the waste emulsion is reacted in the sedimentation tank (4), wherein the sludge enters the sludge dewatering system (8) and is dewatered to be made into sludge cakes for transportation.
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