CN102557187B - Method and equipment for treating oil-containing waste water - Google Patents
Method and equipment for treating oil-containing waste water Download PDFInfo
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- CN102557187B CN102557187B CN201110439215.XA CN201110439215A CN102557187B CN 102557187 B CN102557187 B CN 102557187B CN 201110439215 A CN201110439215 A CN 201110439215A CN 102557187 B CN102557187 B CN 102557187B
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
- C02F2101/325—Emulsions
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/01—Density
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- Water Supply & Treatment (AREA)
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Abstract
The present invention relates to a method for treating oil-containing waste water, particularly operation cooling lubricant for metal machining, wherein, the oil-containing waste water is stored in at least one waste water storage container (1a-1e) and particularly determine water content and/or oil content of the water-containing waste water through density measurement automatically, wherein, the oil-containing waste water is controllably guided into a reutilization container (11) or a first waste water treatment stage (4) or a second waste water treatment stage (5). Furthermore a first threshold value S1 and a second threshold value S2 of the oil content are selected so the waste water with oil content which is higher than or equal with S1 is guided into the reutilization container (11) for further recovery. The waste water with oil content which is larger than or equal with S2 and is smaller than S1 is guided into the first waste water treatment stage (5). Particularly the oil content is enlarged particularly through ultrafiltration in the second waste water treatment stage (5). The invention also relates to a set of equipment which is suitable for applying the method.
Description
Technical field
The present invention relates to a kind of for the treatment of oily waste water, the method for the operation cooling lubricant of metal processing use especially.In addition, the invention still further relates to a kind of for the treatment of oily waste water, the equipment of the operation cooling lubricant of metal processing use especially.
Background technology
In a lot of industrial manufacture processes, all produce oily waste water.When workpiece during cut, produces by the mechanical force occurring the heat that some must discharge from lathe in lathe.In order to reduce the generation of heat, on the other hand in order to discharge heat from lathe, use suitable oil-containing cooling lubricant on the one hand.This cooling lubricant except refrigerating function and lubricating function, the task that the smear metal producing while generally also having workpiece cut is discharged from lathe.The cooling lubricant adopting for these objects is generally comprised of five kinds to 30 kinds single components, and these single components especially comprise base oil and improve the adjuvant of characteristic.These cooling lubricants generally have the life-span of approximately one year and afterwards by heat, chemistry or physical method resolve into principal ingredient, water and oil.The water reclaiming by this method can directly send back in production cycle or flow to another purification process.The oil producing when cooling lubricant decomposes still has the residual water content of the percentage by weight between 70% to 5% according to used disposal route and the place of production, and heat recovery or flow to outside processing procedure.
In order to optimize frugally waste material situation, the oily waste water with higher moisture can be further processed in processing level.In most of the cases, described processing level is a processing level with atmospheric evaporation device, and the energy requirement of this atmospheric evaporation device is generally greater than 700kW/m
3.
Remaining residual water content is pressed based on Ka Er-Fei Xiu method electrochemical measurement principle, so-called and is determined at this.This for the method for determining water cut except quite consuming time, also there are these shortcomings: must from operational process extract examine sample and can not be immediately for process control provides measurement result.This need to get involved technological process in large quantities.Due to the technological process of some suboptimums, consumed unnecessary energy and damaged the economy of the method.
Summary of the invention
Technical matters to be solved by this invention is, provides a kind of for the treatment of oily waste water, and the method and apparatus of the operation cooling lubricant of metal processing use is especially processed oily waste water that the method and equipment can process optimizationlys, economical and energy-conservation.
According to the present invention, this technical matters is by a kind of for the treatment of oily waste water, and especially the method and apparatus of the operation cooling lubricant of metal processing use solves.By of the present invention, for the treatment of oily waste water, especially in the method for the operation cooling lubricant of metal processing use, stipulate, oily waste water is stored at least one effluent storage container and especially and automatically determines water cut and/or the oleaginousness of oily waste water by density measurement, wherein, according to oleaginousness, controllably oily waste water is imported in recycling container or in the first wastewater treatment level or the second wastewater treatment level, and the first threshold values S1 and the second threshold values S2 that select like this oleaginousness, make
-waste water of oleaginousness >=S1 is imported in recycling container, for recycling,
-waste water of oleaginousness >=S2 and < S1 is imported in the first wastewater treatment level, in this first wastewater treatment level, by evaporation of water, increase (aufkonzentrieren) oleaginousness,
-waste water of oleaginousness < S2 is imported in the second wastewater treatment level, in this second wastewater treatment level, especially by super diafiltration, increase oil content.
Advantage by method of the present invention is, the oleaginousness of oily waste water and/or water cut are especially automatically determined by density measurement, wherein, measure and are directly integrated in the processing procedure of operation, make to carry out on the whole process optimization.The measured data of density measurement can especially connect by Ethernet or (PROFIBUS: connection Process FieldbusROFIBUS) is transferred to control device can controllably import to streams and processes in one of level or import in recycling container by this control device according to PROFIBUS standard in order further to process.The great many of experiments that inventor does with the different cooling lubricant (oil-aqueous mixtures) in source component shows, density is a suitable physical measurement parameter, and this measurement parameter is obviously better than the measurement parameter conductivity of using so far with the relevance of the water cut of cooling lubricant.Experimental result confirms that the relation of density relative water content is suitable method.At this, can draw almost linear relation.Therefore, the density of cooling lubricant is direct and water cut is proportional, and water cut is relative with oleaginousness again, that is, and and the percentage by weight-water cut (percentage by weight) of oleaginousness (percentage by weight)=100%.By automatic detection density and definite oleaginousness and/or water cut, can accurately identify various streams.This information can realize the wastewater treatment step of the best aspect ecological and economics respectively.Therefore, the streams that oleaginousness can be more than or equal to the first threshold values S1 controllably imports in recycling container, so that recycling, and needn't be through the processing procedure of consuming time and Expenses Cost.The waste water of oleaginousness >=S2 and < S1 can controllably import in the first wastewater treatment level, in this first wastewater treatment level internal procedure, increases oleaginousness frugally by evaporation of water.And the waste water of higher moisture (also therefore oleaginousness is less, i.e. oleaginousness < S2) is controllably supplied in the second wastewater treatment level, in this second wastewater treatment level, for example waste water is surpassed to diafiltration process economy.
By method of the present invention, especially having advantages of can conserve energy.According to oleaginousness, by being processed immediately and not, waste water imports in recycling container to recycle the processing that can partly save oily waste water.The duration of processing procedure or again processing procedure is sometimes obviously being shortened.In a word, the invention provides a kind of for the treatment of method oily waste water, process optimization, economy and conserve energy.
The water cut of the oily waste water that its oleaginousness increases in the first or second wastewater treatment level and/or oleaginousness are preferably especially automatically definite by density measurement subsequently, wherein
-waste water of oleaginousness >=S1 is controllably imported in recycling container, for recycling,
-waste water of oleaginousness < S1 is controllably flowed to at least one process again level, at this, process again in level especially by the desorb increase oleaginousness of water.
The method is supplemented economy and the feature of environmental protection that has further improved the method.
In order further to improve process economy and the economy of the method, in a kind of particularly advantageous form of implementation, stipulate, the first threshold values S1 of oleaginousness is set as 45% to 55% percentage by weight, preferably approximately 50% percentage by weight.By the first threshold values S1 be set as a value within the scope of this value have advantages of such, that is, no longer oleaginousness must be surpassed this first threshold S1 and therefore higher waste water flow to the processing procedure of consuming time and Expenses Cost.But the waste water of this floorboard with high oil content can be flowed to the recycling of bringing income immediately.
In the favourable form of implementation of another kind, stipulate, the second threshold values S2 of oleaginousness is set as 3% to 7% percentage by weight, is preferably about 5% percentage by weight.The value that the second threshold values S2 is set as within the scope of this value is the cognition based on such,, therefore the waste water that oleaginousness is less than the second threshold values S2 can also be subject to frugally super diafiltration in process economy ground in the second wastewater treatment level, otherwise, can process economy compared with the waste water of floorboard with high oil content ground and processing again by evaporation frugally.Certainly, obviously can replace oleaginousness or addedly can also control the method flow process by relative waste water water cut.97% to 93% percentage by weight of waste water water cut, preferably approximately the second threshold values of 95% percentage by weight is obviously equivalent to 3% to 7% percentage by weight of waste water oleaginousness, preferably approximately the second threshold values S2 of 5% percentage by weight.
For needn't Expenses Cost the water that produces during by wastewater treatment flow to outside waste disposal process (for example, in purification plant), in a kind of especially favourable form of implementation, stipulate, the water producing in processing level is more directly drawn and got back in production run, for generation of new cooling medium and the potpourri of lubricant.
In order to be further increased to recycling, be stored in the oil concentration of the oily waste water in recycling container, in a kind of especially favourable form of implementation, stipulate, the oil obtaining from waste water at least one processes level is again imported in recycling container.By accessible higher oil concentration by this way, can improve in an advantageous manner the oily waste water water reuse income being stored in recycling container, therefore can further improve the economy of the method.
In order to improve flow when implementing the method, in a kind of especially preferred form of implementation, stipulate, a plurality of effluent storage containers are provided, these effluent storage container storages for the treatment of oily waste water.Advantageously can on each effluent storage container, connect a measurement mechanism, by this measurement mechanism, by density measurement, automatically determine water cut and/or the oleaginousness that is stored in the oily waste water in corresponding effluent storage container.Realize thus, can for each effluent storage container, determine individually water cut and/or the oleaginousness of oily waste water.Alternative as it, can also be advantageously provided a unique measurement mechanism, the system that this measurement mechanism can consist of pipeline and valve is connected on an effluent storage container of difference in conversion according to selecting.
In a kind of especially favourable form of implementation, can stipulate, by detecting variation of resonant frequency, determine the density of oily waste water, Coriolis force when this variation of resonant frequency is passed through measurement volume that limit, that can be placed in vibrational state by the mass rate of waste water produces.Coriolis measuring principle be take and controllably produced Coriolis force as basis, and Coriolis force always occurs in translation with while rotating stack.Coriolis intensity of force is relevant with size, speed v and the flow of the quality of motion at this.Coriolis force especially can produce when the mass rate process measurement volume that limit, that be placed in vibrational state of oily waste water.When density measurement, can comprise that outstanding two measurement volume of measurement mechanism that can be placed in the measuring tube of vibrational state produces resonant frequency.This resonant frequency is the function of density, so variable density also causes variation of resonant frequency.Correspondingly adjust the excited frequency for generation of vibration, making to measure volume can be all the time with resonant frequency vibration again.The corresponding measurement mechanism using in the method that is suitable for introducing herein can buy and for example at DE 11 2,004 001 119 B4, record.Created by this way a kind of healthy and strong fast and in measuring technique, measure the density of waste water and determine thus the possible mode of oleaginousness and water cut.Thisly can determine by flow measurement the measuring technique of density, can directly be integrated in oil processing process in simple mode.According to Coriolis-measuring principle, measure waste water accurate mass rate in the volume of regulation.By quality and volume, obtain the density as business, this density is the inspection parameter of expectation at this.Therefore can identify exactly streams, to know corresponding water cut and the oleaginousness of waste water.
Press another aspect of the present invention regulation, for the treatment of oily waste water, especially the operation cooling lubricant of metal processing use, by equipment of the present invention, comprise:
-at least one effluent storage container, in this effluent storage container, can store for the treatment of oily waste water,
-at least one measurement mechanism, this measurement mechanism is connected/can connects and be designed to described at least one effluent storage container, make this measurement mechanism especially by density measurement, automatically to determine water cut and/or the oleaginousness that is stored in the waste water in described at least one effluent storage container
-at least one recycles container, in this recycling container, can store the oily waste water for recycling,
-with the first wastewater treatment level of at least one vaporising device, by this vaporising device, can increase by evaporation of water the oleaginousness of oily waste water,
-with the second wastewater treatment level of at least one super percolating device, by this super percolating device, can increase by super diafiltration the oleaginousness of oily waste water,
-first control device, it is connected/can connects and be designed to at least one measurement mechanism of at least one effluent storage container, make this first control device can according to by the definite oleaginousness of at least one measurement mechanism by oily waste water or flow at least one recycling container, or flow to the first wastewater treatment level or the second wastewater treatment level.
Especially preferred, this equipment also comprises:
-at least one measurement mechanism, for especially automatically determine water cut and/or the oleaginousness of oily waste water by density measurement after the first wastewater treatment level is processed,
-at least one measurement mechanism, for especially automatically determine water cut and/or the oleaginousness of oily waste water by density measurement after the second wastewater treatment level is processed,
-at least one processes level again, and the waste water after processing in the first or second wastewater treatment level can import to this and process in level again,
-second control device, this second control device is connected with the measurement mechanism of the second wastewater treatment level/can connects and be designed to the measurement mechanism of the first wastewater treatment level, make this second control device can be according to by attaching troops to a unit in the definite oleaginousness of the measurement mechanism of relevant wastewater treatment level the oily waste water of processing in the first or second wastewater treatment level or flowing at least one recycling container, or flow to and process again level.
At this, feasiblely in principle be, first measurement mechanism and second measurement mechanism second exhaust-gas treatment level after of replacement after the first exhaust-gas treatment level is provided with a unique measurement mechanism, and the system that this measurement mechanism can consist of conduit and valve is connected respectively in the outlet of the first exhaust-gas treatment level or the outlet of the second exhaust-gas treatment level in conversion according to selecting.
Be particularly useful for implementing the inventive method, by equipment of the present invention, especially by oleaginousness and/or water cut automatically determine and by first and the process control of second control device optimization if desired realized the processing of oily waste water process economy.The data that recorded by measurement mechanism can especially connect by Ethernet or by according to PROFIBUS standard (PROFIBUS: connection Process FieldbusROFIBUS) is transferred to first control device or is transferred to if desired second control device in order further to process.This it should be noted that first and if desired the process control task of second control device also can be born by respective design, independent control device in principle.According to determined oleaginousness and water cut, waste water can be imported and be applicable to its processing level and also import if desired processing again level.Generally speaking, obtain thus the possibility of oil-containing waste gas optimization process aspect process economy.By the use of present device, due to what cause equally that CO2 emissions reduce, energy-conservationly there is economical and ecological advantage.The processing level again existing if desired preferably includes desorption apparatus, can desorb water outlet from oily waste water by this desorption apparatus.By this way, can from water-oil mixture, extract oil by efficient especially method.
In a kind of especially favourable form of implementation, advise, measurement mechanism is designed to, make this measurement mechanism can determine by measuring variation of resonant frequency the density of oily waste water, this variation of resonant frequency can be by the mass rate of waste water Coriolis force during through the measurement volume that limit, that can be placed in vibrational state of each measurement mechanism produce.Thus, measurement mechanism can be integrated in this equipment and the density of oily waste water can be measured especially reliably, and needn't interrupt processing procedure.
Accompanying drawing explanation
With reference to accompanying drawing 1, according to the following explanation of preferred embodiment, draw other features and advantages of the present invention.
Fig. 1 has obviously schematically illustrated calcspar simplifiedly, and this square illustrates for the treatment of the structure of the equipment of oily waste water and by the basic procedure of the method for the treatment of oily waste water of the preferred embodiment of the invention.
Embodiment
For the treatment of oily waste water, especially the equipment (can implement described method by this equipment) of the operation cooling lubricant of metal processing use has a plurality of effluent storage container 1a to 1e, in these effluent storage containers, store pending, for the treatment of oily waste water.This cooling lubricant is generally comprised of five to 30 kinds of single components, and these single components especially comprise base oil and improve the adjuvant of characteristic.Waste water contains the following oil-aqueous mixtures that is also known as emulsion fluid.In Fig. 1, altogether show five effluent storage container 1a to 1e.It should be noted that herein the number of five effluent storage container 1a to 1e that clearly draw at this just for example.In other words, also can arrange more than five or be less than the effluent storage container 1a to 1e of five.
In addition, this equipment has first group of measurement mechanism 2a to 2e, and they are provided for determining water cut and the oleaginousness of oil-aqueous mixtures.On each effluent storage container 1a to 1e, be connected with a measurement mechanism 2a to 2e respectively, make to determine water cut and the oleaginousness in being equipped with each effluent storage container 1a to 1e of relevant measurement mechanism 2a to 2e.Measurement mechanism 2a to 2e is designed at this, makes described measurement mechanism can determine the density of cooling lubricant, and this density and water cut are directly proportional.In other words, between the density of cooling lubricant and water cut, have linear relationship, this linear relationship again can be for determining the oleaginousness (oleaginousness [percentage by weight]=100 percentage by weights-water cut [percentage by weight]) of oily waste water.
Measurement mechanism 2a to 2e is designed to, and makes described measurement mechanism be suitable for implementing flow measurement, and therefore can directly be integrated in technological process.Measurement mechanism 2a to 2e is designed to, and makes described measurement mechanism according to the Coriolis-measuring principle elaborating below, can measure the accurate mass flow of the fluid in the volume of regulation.From quality and volume, obtain the density as business, density is the inspection parameter of expectation at this.Coriolis-measuring principle of using in measurement mechanism 2a to 2e be take and controllably produced Coriolis force as basis, the always appearance after translation and transhipment stack of this Coriolis force.Coriolis intensity of force is relevant with size, speed v and the mass rate of moving-mass at this.Coriolis force especially can produce when mass rate process each measurement mechanism 2a to 2e of oily waste water measurement volume that limit, that be placed in vibrational state.When density measurement, can comprise that outstanding two measurement volume of measurement of correlation device 2a to 2e that can be placed in the measuring tube of vibrational state produces resonant frequency.This resonant frequency is the function of density, so variable density also can cause the variation that resonant frequency can evaluation.Excited frequency for generation of vibration is automatically adjusted at this again, and making to measure volume all the time can be with resonant frequency vibration.Be suitable for using measurement mechanism 2a to 2e in the method for introducing herein, corresponding can buy and for example in Germany Patent document DE 11 2,004 001 119 B4, record.
First group of measurement mechanism 2a to 2e especially connects by Ethernet or according to (the PROFIBUS: Process FieldbusROFIBUS) connect and is connected with first control device 3, this first control device 3 is provided for the wastewater streams that this equipment is passed through in data that assessment records by first group of measurement mechanism 2a to 2e and control of PROFIBUS standard.Below also the function of first control device 3 will be further illustrated.
This equipment also comprises the first wastewater treatment level 4 and the second wastewater treatment level 5 and recycling container 11, and this second wastewater treatment level and the first wastewater treatment level 4 are connected in parallel, and in this recycling container, can store the oily waste water for recycling.The first wastewater treatment level 4 comprises vaporising device, for increasing oleaginousness by evaporation of water.The second wastewater treatment level 5 comprises super percolating device, imports the emulsion fluid of this second wastewater treatment level 5 for super diafiltration.This super diafiltration is equally for increasing the oil content of oil-aqueous mixtures.
According to the water cut and/or the oleaginousness that record, be stored in the oily waste water in effluent storage container 1a to 1e, waste water otherwise be imported into recycling container 11 in, and needn't in other step, process waste water, or by first control device 3 select in two wastewater treatment levels 4,5, be suitable for processing that wastewater treatment level that is stored in the waste water in each effluent storage container 1a to 1e most.
Depending on definite oleaginousness, may there is different situations:
A) when by one of measurement mechanism 2a to 2e percentage by weight (the first threshold values S1) definite, that be stored in oleaginousness >=50% of the oil-aqueous mixtures in corresponding storage container 1a to 1e, in two are processed one of level 4,5, emulsion fluid is not further processed.Emulsion fluid is directly imported in recycling container 11, for recycling.
B) when the percentage by weight (the first threshold values S1) of percentage by weight (the second threshold values S2) that determine, that be stored in oleaginousness >=5% of the oil-aqueous mixtures in corresponding storage container 1a to 1e and < 50% by one of measurement mechanism 2a to 2e, emulsion fluid is flowed to the first wastewater treatment level 4, in this first wastewater treatment level 4, by evaporation of water, increase oleaginousness.
C) when by one of measurement mechanism 2a to 2e oleaginousness < 5% (percentage by weight) definite, that be stored in the oil-aqueous mixtures in corresponding storage container 1a to 1e, this emulsion fluid is fed to the second wastewater treatment level 5, in this second wastewater treatment level 5, by super diafiltration, increases oleaginousness.
The first oil content threshold values S1 generally can be set as 45% to 55% (percentage by weight), and the second oil content threshold values S2 is set as 3% to 7% (percentage by weight).In order to import to one of two processing levels 4,5 according to its oil concentration or by emulsion fluid, directly import in recycling container 11, this equipment has the guiding device that clearly do not illustrate at this and controlled valve and pumping unit in a manner known way, and this valve is connected with first control device 3 with pumping unit and can be controlled by first control device.
Each in two wastewater treatment levels 4,5 also has measurement mechanism 6,7, can determine water cut and the oleaginousness of the emulsion fluid after processing in corresponding wastewater treatment level 4,5 by this measurement mechanism.Two measurement mechanisms 6,7 especially connect by Ethernet or according to PROFIBUS standard (PROFIBUS: connection Process FieldbusROFIBUS) is connected with second control device 8, this second control device 8 is provided for, and control linkage is at two wastewater treatment levels 4,5 valve downstream, that clearly do not illustrate at this and pumping unit.The measurement mechanism 6,7 of two wastewater treatment levels 4,5 is preferably designed to again, makes described measurement mechanism can pass through to detect by the density measurement of above-mentioned Coriolis-measuring principle oleaginousness and/or the water cut of emulsion fluid.When processing the percentage by weight of oleaginousness >=50% afterwards in one of two wastewater treatment levels 4,5, emulsion fluid is imported in recycling container 11 for recycling.Otherwise, if the percentage by weight of the oleaginousness < of emulsion fluid 50%, emulsion fluid is imported and processed in level 9 again, this is processed level again and is connected to two wastewater treatment levels, 4,5 downstreams and preferably includes desorption apparatus, so that separated with oil by desorb Jiang Shui.At this, first oil-aqueous mixtures is heated to a definite temperature (being generally heated to about 60 to 90 degrees Celsius), is then subject to cold and dry air effect.This air heating and can absorb moisture and therefore draw water from oil-aqueous mixtures.By determining the density of oil-aqueous mixtures and therefore determine oleaginousness by another measurement mechanism 10 of above-mentioned Coriolis-measuring principle work equally.The oil obtaining in processing level 9 is again imported in recycling container 11 in order to recycle, and preferably mixes with the oil water mixture being stored in recycling container, makes further to increase oil content.During the water obtaining in processing again level 9 is imported to purification plant 12 and purify in this purification plant.Water also can directly be recycled in production run, for generation of new cooling and lubricating agent composition.
List of numerals
1a to 1e effluent storage container
2a to 2e measurement mechanism
3 first control devices
4 first wastewater treatment levels
5 second wastewater treatment levels
6 measurement mechanisms
7 measurement mechanisms
8 second control devices
9 process level again
10 measurement mechanisms
11 recycling containers
12 purification plants
Claims (14)
1. one kind for the treatment of oily waste water, especially metal is processed the method for the operation cooling lubricant of use, wherein, described oily waste water is stored at least one effluent storage container (1a-1e) and especially and automatically determines water cut and/or the oleaginousness of described oily waste water by density measurement, wherein, according to oleaginousness, oily waste water is controllably imported in recycling container (11) or in the first wastewater treatment level (4) or the second wastewater treatment level (5), and the first threshold values S1 and the second threshold values S2 that select so described oleaginousness, make
-waste water of oleaginousness >=S1 is imported in described recycling container (11), for recycling,
-waste water of oleaginousness >=S2 and <S1 is imported in described the first wastewater treatment level (4), in this first wastewater treatment level, by evaporation of water, increase oleaginousness,
-waste water of oleaginousness <S2 is imported in described the second wastewater treatment level (5), in this second wastewater treatment level, especially by super diafiltration, increase oleaginousness.
2. the method for claim 1, is characterized in that, especially by density measurement, automatically determines water cut and/or the oleaginousness of the oily waste water that its oleaginousness increases in the described first or second wastewater treatment level (4,5), wherein
-waste water of oleaginousness >=S1 is controllably imported in described recycling container (11), for recycling,
-waste water of oleaginousness <S1 is controllably flowed to at least one process again level (9), at this, process again in level especially by the desorb increase oleaginousness of water.
3. method as claimed in claim 1 or 2, is characterized in that, the first threshold values S1 of described oleaginousness is set as to 45% to 55% percentage by weight.
4. method as claimed in claim 3, is characterized in that, the first threshold values S1 of described oleaginousness is set as to 50% percentage by weight.
5. method as claimed in claim 1 or 2, is characterized in that, the second threshold values S2 of described oleaginousness is set as 3% to 7% percentage by weight.
6. method as claimed in claim 5, is characterized in that, the second threshold values S2 of described oleaginousness is set as 5% percentage by weight.
7. method as claimed in claim 2, is characterized in that, the water gathering in described processing level again (9) is directly drawn to be got back in production run, for generation of new cooling medium and the potpourri of lubricant.
8. method as claimed in claim 2, is characterized in that, by described at least one process again the oil that level obtains in (9) from described waste water and import in described recycling container (11), for recycling.
9. the method for claim 1, is characterized in that, a plurality of effluent storage containers (1a-1e) are provided, the storage of these effluent storage container for the treatment of oily waste water.
10. the method for claim 1, it is characterized in that, at the upper measurement mechanism (2a-2e) that connects of each effluent storage container (1a-1e), by this measurement mechanism, by density measurement, automatically determine water cut and/or the oleaginousness that is stored in the oily waste water in corresponding effluent storage container (1a-1e).
11. the method for claim 1, it is characterized in that, by detecting variation of resonant frequency, determine the density of oily waste water, Coriolis force when this variation of resonant frequency is passed through measurement volume that limit, that be placed in vibrational state by the mass rate of described waste water produces.
12. 1 kinds for the treatment of oily waste water, the equipment of the operation cooling lubricant of metal processing use especially, and it comprises
-at least one effluent storage container (1a-1e), in this effluent storage container (1a-1e), can store for the treatment of oily waste water,
-at least one measurement mechanism (2a-2e), this measurement mechanism (2a-2e) is connected and is designed to described at least one effluent storage container (1a-1e), make described measurement mechanism especially by density measurement, automatically to determine water cut and/or the oleaginousness that is stored in the waste water in described at least one effluent storage container (1a-1e)
-at least one recycles container (11), can store the oily waste water for recycling in this recycling container (11),
-with the first wastewater treatment level (4) of at least one vaporising device, by this vaporising device, can increase by evaporation of water the oleaginousness of oily waste water,
-with the second wastewater treatment level (5) of at least one super percolating device, by this super percolating device, can increase by super diafiltration the oleaginousness of oily waste water,
-first control device (3), this first control device is connected and is designed to described at least one measurement mechanism (2a-2e) of described at least one effluent storage container (1a-1e), make this first control device energy according at least one recycles container (11) by described oily waste water or described in flowing to by the definite oleaginousness of described at least one measurement mechanism (2a-2e), or flow to described the first wastewater treatment level (4) or described the second wastewater treatment level (5).
13. equipment as claimed in claim 12, is characterized in that, this equipment also comprises
-at least one measurement mechanism (6), for especially automatically determine water cut and/or the oleaginousness of described oily waste water by density measurement after described the first wastewater treatment level (4) is processed,
-at least one measurement mechanism (7), for especially automatically determine water cut and/or the oleaginousness of described oily waste water by density measurement after described the second wastewater treatment level (5) is processed,
-at least one processes level (9) again, the waste water after processing in the described first or second wastewater treatment level (4,5) can import to described at least one process again in grade (9),
-second control device (8), this second control device is connected and is designed to the described measurement mechanism (7) of described the second wastewater treatment level (5) with the described measurement mechanism (6) of described the first wastewater treatment level (4), make this second control device can be according to by attaching troops to a unit in the definite oleaginousness of the measurement mechanism (6,7) of the described first or second relevant wastewater treatment level (4,5) the oily waste water of processing in the described first or second wastewater treatment level (4,5) or flowing to described at least one recycling container (11), or described in flowing to, process again grade (9).
14. equipment as described in claim 12 or 13, it is characterized in that, described measurement mechanism (2a-2e, 6,7) is designed to, make described measurement mechanism can determine by measuring variation of resonant frequency the density of described oily waste water, by the mass rate of waste water, the Coriolis force during through the measurement volume that limit, that can be placed in vibrational state of described each measurement mechanism (2a-2e, 6,7) produces described variation of resonant frequency.
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| DE102010056418.4 | 2010-12-23 | ||
| DE102010056418.4A DE102010056418B4 (en) | 2010-12-23 | 2010-12-23 | Process and device for the treatment of oily sewage |
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| CN102557187A CN102557187A (en) | 2012-07-11 |
| CN102557187B true CN102557187B (en) | 2014-08-06 |
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| CN103951133B (en) * | 2014-05-16 | 2016-08-24 | 东莞市英硫净水服务有限公司 | A kind of oil-well wastewater Zero-discharge treating process and device |
| DE102014215405A1 (en) | 2014-08-05 | 2016-02-11 | Bayerische Motoren Werke Aktiengesellschaft | Process for wastewater treatment of oily wastewater and wastewater treatment plant |
| CN104817234B (en) * | 2015-04-26 | 2016-08-17 | 常州大学 | High concentration wire drawing lubricant Waste Water Treatment |
| CN110508591B (en) * | 2019-07-11 | 2022-04-12 | 广州中国科学院先进技术研究所 | Separation and crystallization system and method for waste mixed salt |
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| GB1456304A (en) * | 1973-02-20 | 1976-11-24 | Abcor Inc | Process for treating waste aqueous streams |
| DD260007A1 (en) * | 1987-04-20 | 1988-09-14 | Werkzeugmasch Forschzent | METHOD FOR REGENERATING A CIRCULATED POLLUTED OIL WATER EMULSION |
| DE19830046C1 (en) * | 1998-07-04 | 1999-09-09 | Sommer | Removal of water from metalworking coolant-lubricating emulsions |
| CN1412531A (en) * | 2002-12-09 | 2003-04-23 | 常荫铎 | Technological process for testing liquid production quantity and water content of oil well and its equipment |
| US7072775B2 (en) | 2003-06-26 | 2006-07-04 | Invensys Systems, Inc. | Viscosity-corrected flowmeter |
| CA2754682C (en) * | 2009-03-11 | 2014-07-22 | Ennio Bitto | Measuring system for media flowing in a pipeline |
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| DE102010056418B4 (en) | 2015-12-17 |
| DE102010056418A1 (en) | 2012-06-28 |
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