CN220056578U - Machining workshop cutting waste liquid treatment system - Google Patents
Machining workshop cutting waste liquid treatment system Download PDFInfo
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- CN220056578U CN220056578U CN202321391272.XU CN202321391272U CN220056578U CN 220056578 U CN220056578 U CN 220056578U CN 202321391272 U CN202321391272 U CN 202321391272U CN 220056578 U CN220056578 U CN 220056578U
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- dosing
- waste liquid
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- 239000007788 liquid Substances 0.000 title claims abstract description 44
- 239000002699 waste material Substances 0.000 title claims abstract description 26
- 238000005520 cutting process Methods 0.000 title claims abstract description 21
- 238000003754 machining Methods 0.000 title description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 230000001105 regulatory effect Effects 0.000 claims abstract description 18
- 238000000926 separation method Methods 0.000 claims abstract description 17
- 238000005189 flocculation Methods 0.000 claims abstract description 16
- 230000016615 flocculation Effects 0.000 claims abstract description 16
- 238000004062 sedimentation Methods 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 13
- 239000002253 acid Substances 0.000 claims abstract description 10
- 239000003513 alkali Substances 0.000 claims abstract description 8
- 239000010802 sludge Substances 0.000 claims description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 abstract description 8
- 239000006228 supernatant Substances 0.000 abstract description 6
- 239000002173 cutting fluid Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
- 208000028659 discharge Diseases 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
The utility model discloses a cutting waste liquid treatment system of a processing workshop, which comprises a grating pool, wherein the grating pool is connected with a workshop drainage ditch, an outlet of the grating pool is connected with an oil separation pool, a clear water outlet of the oil separation pool is connected with a regulating pool, the regulating pool is connected with a neutralization pool, an acid dosing device and an alkali dosing device are connected to the neutralization pool, a waste water outlet of the neutralization pool is connected with a demulsifier pool, a demulsifier dosing device is connected to the demulsifier pool, a water outlet of the demulsifier pool is connected with a flocculation reaction pool, a PAC dosing device and a PAM dosing device are connected to the flocculation reaction pool, a water outlet of the flocculation reaction pool is connected with an air floatation machine, a water outlet of the air floatation machine is connected with a sedimentation pool, a supernatant water outlet of the sedimentation pool is connected with a filtering device, and a water outlet of the filtering device is connected with a discharge channel or a discharge pipe; the acid dosing device, the alkali dosing device, the demulsifier dosing device, the PAC dosing device and the PAM dosing device all comprise dosing tanks. The operation is simple, and the standard can be continuously reached.
Description
Technical Field
The utility model relates to the technical field of water treatment, in particular to a cutting waste liquid treatment system of a processing workshop.
Background
When the metal appearance is processed in the simple lathe industry, the numerical control lathe industry, the milling machine industry, the mechanical finish machining industry, the tool machining industry and the like, the lathe used has high rotation speed of a mechanical rotating shaft, high heat is generated on the surfaces of a lathe bit and a processed material due to friction, and the industrial multipurpose cutting fluid is injected into the surfaces of the lathe bit and the processed material to achieve the purposes of cooling, lubrication, cleaning and rust prevention, so that the cutting fluid and the cuttings become main pollutants. Since cooling is a main purpose of cutting, water accounts for about 90-95% of the cutting fluid composition, grease is unavoidable for lubrication, and water-oil mixing and dissolution, and surfactants become one of important factors, and are difficult to handle. Conventionally, cutting fluid wastewater is called one of "cancer water" in industrial wastewater, and must be strictly treated to be discharged.
The current treatment method of the cutting waste liquid comprises the following steps:
1. the physical treatment mainly separates ion suspended matters and turbid matters in the wastewater from aqueous solution, and mainly can be separated by sedimentation and floating separation, and filtration and centrifugation.
2. And a chemical treatment for treating fine suspended particles or colloidal particles which are not physically separated or for chemically treating harmful components in the waste liquid to make them harmless. Such as agglomeration, oxidation-reduction, adsorption, ion exchange, etc.
3. Biological treatment, which is to decompose and treat organic matters in the waste liquid by utilizing microorganisms.
4. The combustion treatment generally includes a direct combustion method and an evaporation concentration method in which the waste cutting fluid is evaporated and concentrated and then subjected to combustion treatment. The evaporation concentration method is a common physical treatment mode, and most of water in the waste cutting fluid is removed by heating, so that the treatment capacity of the waste fluid is reduced.
The method for treating the waste liquid of the cutting fluid comprises the following steps: (1) Removing metal scraps in the cutting waste liquid through magnetic separation; (2) Filtering the cutting waste liquid through a filter screen to remove solid impurities in the cutting liquid, thereby obtaining a first treatment liquid; (3) Adding an emulsifying agent into the first treatment liquid to remove greasy substances in the cutting waste liquid to obtain a second treatment liquid; (4) Adding a medicament into the second treatment liquid to promote the oxidation reaction of the oxide in the second treatment liquid to obtain a third treatment liquid; (5) Adjusting the PH value of the third treatment liquid to be a neutral value, adding a coagulating agent into the neutral third treatment liquid to form suspended particles in the third treatment liquid into a flocculated object, and obtaining a fourth treatment liquid; (6) filtering the fourth treatment liquid to obtain clear liquid. The utility model can rapidly realize the treatment of the cutting waste liquid and effectively remove grease, metal scraps, high organic matters and substances difficult to degrade. The method is simpler, but at present, the treatment requirement of the industrial park owner on the cutting fluid is the indexes of pH, COD, surfactant, SS and petroleum in the secondary discharge standard of Integrated wastewater discharge Standard (GB 8978-2002), so a new treatment method is required.
Table 1 secondary emission Standard of Integrated wastewater discharge Standard (GB 8978-2002)
mg/L
The sewage detection index is as follows: pH, COD, surfactant, SS, petroleum.
Disclosure of Invention
In order to solve the technical problems, the utility model provides another processing workshop cutting waste liquid treatment system which can continuously reach the secondary emission standard pH, COD, surfactant, SS and petroleum of the integrated wastewater emission standard (GB 8978-2002) and can realize automatic dosing operation.
In order to achieve the above purpose, the utility model is realized by the following technical scheme: the system comprises a grid pond, wherein the grid pond is connected with a workshop drainage ditch, an outlet of the grid pond is connected with an oil separation pond, a clear water outlet of the oil separation pond is connected with a regulating pond, the regulating pond is connected with a neutralization pond, an acid dosing device and an alkali dosing device are connected to the neutralization pond, a waste water outlet of the neutralization pond is connected with a demulsifier dosing device, a water outlet of the demulsifier pond is connected with a flocculation reaction pond, the flocculation reaction pond is connected with a PAC dosing device and a PAM dosing device, a water outlet of the flocculation reaction pond is connected with an air floatation machine, a water outlet of the air floatation machine is connected with a sedimentation pond, a supernatant water outlet of the sedimentation pond is connected with a filtering device, and a water outlet of the filtering device is connected with a discharge channel or a discharge pipe; the acid dosing device, the alkali dosing device, the demulsifier dosing device, the PAC dosing device and the PAM dosing device all comprise dosing tanks, and a spiral-flow type gas stirrer is arranged in each dosing tank.
In the scheme, the method comprises the following steps: the outlet of the dosing tank is provided with a metering pump through which dosing is performed.
In the scheme, the method comprises the following steps: a liquid level meter is arranged in the dosing tank. The liquid level in the dosing tank is conveniently monitored.
In the scheme, the method comprises the following steps: the system also comprises an accident pool, wherein the accident pool and the regulating pool can be communicated with each other through a pipeline. The emergency treatment when the accident occurs is convenient.
In the scheme, the method comprises the following steps: the sludge of scum, sedimentation tank and filter equipment of air supporting machine gets into the sludge impoundment, be provided with the mud retort on the sludge impoundment, also be connected with PAC charge device and PAM charge device on the mud retort, the export of mud retort passes through the pipeline and links to each other with the plate frame filter pressing device, the delivery port and the equalizing basin of plate frame filter pressing device link to each other.
In the scheme, the method comprises the following steps: the filtering device comprises a multi-medium filter and an activated carbon filter which are sequentially connected. Both multi-media filters and activated carbon filters are prior art.
The multi-medium filter takes layered anthracite, sand, finely crushed garnet or other materials as a bed layer, when raw water passes through a filter material from top to bottom, suspended matters in the water are intercepted by the surface of the filter layer due to adsorption and mechanical choking action; when water flows into the middle of the filter layer, the sand grains in the filter layer are arranged more tightly, so that particles in the water have more opportunities to collide with the sand grains, the surfaces of the water floc, the suspended matters and the sand grains are adhered to each other, and impurities in the water are trapped in the filter layer, so that clarified water quality is obtained. The filtered effluent suspension can be below 5 mg/L.
The work of the activated carbon filter is done by a carbon bed. The active carbon particles forming the carbon bed have very many micropores and huge specific surface area, and have strong physical adsorption capacity. The water passes through the carbon bed, and organic pollutants in the water are effectively adsorbed by the activated carbon.
In the scheme, the method comprises the following steps: the air floatation machine is an integrated dissolved air floatation machine.
The cutting fluid waste liquid is collected by a drainage ditch, is pretreated by a grid to remove solid impurities, and enters an oil separation tank to separate oil and precipitate, so as to intercept greasy dirt; and the mixture passes through an oil separation tank and then enters an adjusting tank for homogenizing average adjustment.
After homogenizing the average amount, lifting the mixture to a neutralization reaction tank by a lifting pump, adding NaOH or acid to adjust the pH value to 7, neutralizing the mixture, then feeding the mixture into a demulsifier tank, adding demulsifier to demulsifie, feeding the demulsifier tank into a flocculation reaction tank, and adding PAC and PAM to carry out flocculation reaction.
And then removing tiny oil drops and suspended matters in the sewage through an air floatation machine, enabling the subsequent sewage to enter a sedimentation tank for solid-liquid separation, enabling clear liquid to enter a multi-medium filter and an activated carbon filter for filtering through a booster pump, further removing suspended matters in the water, and discharging filtered effluent into a municipal pipe network through a discharge channel or a discharge pipe.
The scum of the air floatation machine, the sludge at the bottom of the sedimentation tank and the sludge backwashed by the filter are discharged into a sludge concentration tank, the supernatant of the sludge tank flows back to the regulating tank, the concentrated sludge is lifted to a sludge reaction tank by a lifting pump, PAC and PAM are added for flocculation reaction, the sludge is lifted to a plate-and-frame filter press for dehydration by a pneumatic diaphragm pump, and the sludge is transported outwards.
The dosing device automatically measures dosing through the liquid level cooperative metering pump, does not need manual dosing of workers, and saves manpower and material resources. The spiral-flow type air stirring system has the advantages of simple structure, stable and reliable operation, low operation cost, simple operation and complete fault-free operation.
The system has stronger bearing capacity to the fluctuation of raw water quantity and quality, and ensures that the water output stably reaches the required quality standard in the annual operation. The system is designed according to unattended operation, so that the middle maintenance cost and the personnel operation management difficulty are reduced. Economical and simple in operation and maintenance.
Drawings
FIG. 1 is a process flow diagram of the present utility model.
Detailed Description
The utility model is further described below with reference to the drawings and examples.
Example 1
As shown in figure 1, a processing workshop cutting waste liquid treatment system comprises a grating pool 1, the grating pool 1 is connected with a workshop drainage ditch, an outlet of the grating pool 1 is connected with an oil separation pool 2, the grating pool 1 and the oil separation pool 2 adopt a self-flowing mode, water in the grating pool directly flows into the oil separation pool 2, a clear water outlet of the oil separation pool 2 is connected with a regulating pool 3, the regulating pool 3 is connected with a neutralization pool 4, water in the regulating pool 3 is pumped into the neutralization pool 4 through a lifting pump, an acid dosing device and an alkali dosing device are connected onto the neutralization pool, a water outlet of the neutralization pool 4 is connected with a demulsifier dosing device, a water outlet of the demulsifier pool is connected with a flocculation reaction pool 6, a PAC dosing device and a PAM dosing device are connected onto the flocculation reaction pool 6, a water outlet of the flocculation reaction pool 6 is connected with an air floatation machine 7, and the air floatation machine 7 is an integrated dissolved air floatation machine. The system is also designed with an accident pool 11, and the accident pool 11 and the regulating pool 3 can be mutually communicated through pipelines. When an emergency occurs, the water in the regulating tank can be discharged to the accident tank for temporary storage. The accident pool can collect accident wastewater and then enter the regulating pool for treatment.
The water outlet of the air floatation machine 7 is connected with a sedimentation tank 8, the sedimentation tank 8 is an inclined tube sedimentation tank, the supernatant water outlet of the sedimentation tank 8 is connected with a filter device, and the filter device comprises a multi-medium filter 9 and an activated carbon filter 10 which are sequentially connected.
The water outlet of the filtering device is connected with a discharge channel or a discharge pipe to be discharged to a municipal pipe network.
The acid dosing device A, the alkali dosing device B, the demulsifier dosing device C, PAC dosing device D and the PAM dosing device E all comprise a dosing tank 12, a rotational flow type gas stirrer 13 is arranged in the dosing tank 12, and the rotational flow type gas stirrer 13 is in the prior art and is not described in detail herein. The outlet of the dosing tank 1 is provided with a metering regulating valve 14 and an automatic dosing electromagnetic valve 15. Of course, the outlet of the dosing tank is also provided with a metering pump, and the dosing pump doses the medicament. Or a gravity flow system is directly adopted without a metering pump, namely, the dosing tank is placed at a high position, and gravity is utilized to automatically flow into a corresponding reaction tank. A fluid level gauge 16 is disposed within the canister 12.
The scum of the air flotation machine 7, the sedimentation tank 8 and the sludge of the filtering device enter a sludge tank 17, a supernatant discharge pipe of the sludge tank 17 is connected with the regulating tank 3, a sludge reaction tank 18 is arranged on the sludge tank 17, a PAC dosing device and a PAM dosing device are also connected on the sludge reaction tank, an outlet of the sludge reaction tank is connected with a plate and frame filter pressing device through a pipeline, and a water outlet of the plate and frame filter pressing device is connected with the regulating tank.
The cutting fluid waste liquid is collected by a drainage ditch, is pretreated by a grid to remove solid impurities, and enters an oil separation tank to separate oil and precipitate, so as to intercept greasy dirt; and the mixture passes through an oil separation tank and then enters an adjusting tank for homogenizing average adjustment.
After homogenizing the average amount, lifting the mixture to a neutralization reaction tank by a lifting pump, adding NaOH or acid to adjust the pH value to 7, neutralizing the mixture, then feeding the mixture into a demulsifier tank, adding demulsifier to demulsifie, feeding the demulsifier tank into a flocculation reaction tank, and adding PAC and PAM to carry out flocculation reaction.
And then removing tiny oil drops and suspended matters in the sewage through an air floatation machine, enabling the subsequent sewage to enter a sedimentation tank for solid-liquid separation, enabling clear liquid to enter a multi-medium filter and an activated carbon filter for filtering through a booster pump, further removing suspended matters in the water, and discharging filtered effluent into a municipal administration official network through a discharge channel or a discharge pipe.
The scum of the air floatation machine, the sludge at the bottom of the sedimentation tank and the filter residues of the filtering device are discharged into a sludge concentration tank, the supernatant of the sludge tank flows back to the regulating tank, the concentrated sludge is lifted to a sludge reaction tank through a lifting pump, PAC and PAM are added for flocculation reaction, the sludge is lifted to a plate-and-frame filter press for dehydration through a pneumatic diaphragm pump, and the sludge is transported outwards.
The dosing device can realize automatic metering dosing through the metering pump, does not need manual dosing of workman, practices thrift manpower and materials. The spiral-flow type air stirring system has the advantages of simple structure, stable and reliable operation, low operation cost, simple operation and complete fault-free operation.
In each link of the utility model, under the condition that a pump is not mentioned, gravity flow, or advection or pump lifting mode can be adopted to enter the next working procedure.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a workshop cutting waste liquid processing system, includes grid pond, its characterized in that: the device comprises a grid tank, an oil separation tank, a clear water outlet, a regulating tank, a neutralization tank, an acid dosing device, an alkali dosing device, a demulsification tank, a water outlet and a flocculation reaction tank, wherein the outlet of the grid tank is connected with the oil separation tank; the acid dosing device, the alkali dosing device, the demulsifier dosing device, the PAC dosing device and the PAM dosing device all comprise dosing tanks, and a spiral-flow type gas stirrer is arranged in each dosing tank.
2. The process plant cutting waste liquid treatment system according to claim 1, wherein: and a metering pump is further arranged on the outlet of the dosing tank.
3. The process plant cutting waste liquid treatment system according to claim 2, wherein: a liquid level meter is arranged in the dosing tank.
4. A process plant cutting waste liquid treatment system according to claim 3, wherein: the system also comprises an accident pool, wherein the accident pool and the regulating pool can be communicated with each other through a pipeline.
5. The process plant cutting waste liquid treatment system according to any one of claims 1 to 4, wherein: the sludge of scum, sedimentation tank and filter equipment of air supporting machine gets into the sludge impoundment, be provided with the mud retort on the sludge impoundment, also be connected with PAC charge device and PAM charge device on the mud retort, the export of mud retort passes through the pipeline and links to each other with the plate frame filter pressing device, the delivery port and the equalizing basin of plate frame filter pressing device link to each other.
6. The process plant cutting waste liquid treatment system according to claim 5, wherein: the filtering device comprises a multi-medium filter and an activated carbon filter which are sequentially connected.
7. The process plant cutting waste liquid treatment system according to claim 6, wherein: the air floatation machine is an integrated dissolved air floatation machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321391272.XU CN220056578U (en) | 2023-06-02 | 2023-06-02 | Machining workshop cutting waste liquid treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321391272.XU CN220056578U (en) | 2023-06-02 | 2023-06-02 | Machining workshop cutting waste liquid treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220056578U true CN220056578U (en) | 2023-11-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321391272.XU Active CN220056578U (en) | 2023-06-02 | 2023-06-02 | Machining workshop cutting waste liquid treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220056578U (en) |
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2023
- 2023-06-02 CN CN202321391272.XU patent/CN220056578U/en active Active
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