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Processing method of cutting fluid wastewater

A treatment method and cutting fluid technology, applied in the field of cutting fluid waste water treatment, can solve the problems of hazards, high cost of cutting waste fluid treatment, inability to completely remove waste fluid suspension, colloidal particles and organic matter, etc., and achieve guaranteed treatment. effect of effect

Inactive Publication Date: 2018-09-11
CHAOHU NANTE PRECISION MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The emulsified cutting fluid widely used in modern metal processing is an industrial liquid used to improve the cutting effect. During its use, the emulsified cutting fluid decomposes to varying degrees and deteriorates, resulting in reduced performance. Therefore, a large amount of Waste cutting fluid, waste cutting fluid and waste emulsion have the hazards of general oily wastewater, and their surfactants are also harmful to organisms, and can also dissolve some toxic substances that are insoluble in water, which need to be treated and meet the local regulations. It can only be discharged after the treatment standard, but the cost of cutting waste liquid treatment is high. Faced with the high cost of waste liquid treatment, many enterprises are overwhelmed, and a small number of enterprises even take risks, discard or "sneak discharge", which is harmful to our living environment and safety. Caused a major impact, the existing cutting fluid wastewater treatment method cannot completely remove the suspended solids, colloidal particles and organic matter in the waste liquid, for this reason, we propose a cutting fluid wastewater treatment method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] First, centrifugal separation is carried out through a centrifugal device to remove suspended matter in the water-based cutting fluid; the filtered waste liquid is injected into the treatment tank, and then an inorganic coagulant or an organic coagulant is added to promote the coagulation of fine particles and colloidal particles; it is treated by coagulation method Finally, add an oxidant, or treat the harmful components in the waste liquid by electrolysis redox reaction; inject the redox waste liquid into the filter box, and absorb the harmful components in the waste liquid through the activated carbon in the filter box; filter the The final waste liquid is added to the ion exchange box, which is equipped with ion exchange resin, and the ion exchange resin performs ion exchange on the ionic harmful components in the waste liquid to achieve the purpose of treatment; the waste liquid after ion exchange is finally passed through the loose water filter bed The waste liquid...

Embodiment 2

[0027] In embodiment one, add following operation:

[0028] Suspended matter in step (1) refers to chips, grinding dust, oil particles, etc. in the waste liquid.

[0029] First, centrifugal separation is carried out by a centrifugal device to remove suspended matter in the water-based cutting fluid. The suspended matter refers to chips, abrasive powder, oil particles, etc. in the waste liquid; the filtered waste liquid is injected into the treatment tank, Then add an inorganic coagulant or an organic coagulant to promote the coagulation of fine particles and colloidal particles; after coagulation treatment, add an oxidant, or treat harmful components in the waste liquid by electrolysis redox reaction; inject the waste liquid after redox into the filter The activated carbon in the filter box adsorbs the harmful components in the waste liquid; the filtered waste liquid is added to the ion exchange box, and the ion exchange box is equipped with an ion exchange resin, which is har...

Embodiment 3

[0031] In embodiment two, add following operation:

[0032] In step (2), the inorganic coagulant is one of polyaluminum chloride and alumina sulfate, and the organic coagulant is polyacrylamide.

[0033] First, centrifugal separation is carried out by a centrifugal device to remove suspended matter in the water-based cutting fluid. The suspended matter refers to chips, abrasive powder, oil particles, etc. in the waste liquid; the filtered waste liquid is injected into the treatment tank, Then add an inorganic coagulant or an organic coagulant to promote the coagulation of fine particles and colloidal particles. The inorganic coagulant is one of polyaluminum chloride and alumina sulfate, and the organic coagulant is polyacrylamide; processed by coagulation Finally, add an oxidant, or treat the harmful components in the waste liquid by electrolysis redox reaction; inject the redox waste liquid into the filter box, and absorb the harmful components in the waste liquid through the...

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PUM

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Abstract

The invention discloses a processing method of cutting fluid wastewater. The processing method comprises following steps: at first, carrying out centrifugal separation by a centrifuge to remove suspended solids in water base cutting fluid; injecting filtered waste liquid into a processing box, then adding an inorganic / organic flocculant to promote the flocculation of fine particles and colloid particles; after flocculation, adding an oxidant or carrying out electrolysis oxidation-reduction to process harmful substances in the waste liquid; after oxidation-reduction, injecting the waste liquidinto a filter box, absorbing harmful substances in the waste liquid by active carbon in the filter box; and adding filtered waste liquid into an ion exchange box. Through physical, chemical and biological treatments, suspended solids, colloid particles and organic substances in waste liquid are radically removed, the processing effect is guaranteed; and solved is the problem that in the prior art,the suspended solids, colloid particles and organic substances in waste liquid cannot be completely removed by a conventional processing method.

Description

technical field [0001] The invention relates to the technical field of cutting fluid treatment, in particular to a treatment method for cutting fluid wastewater. Background technique [0002] Cutting fluid is an industrial liquid used in metal cutting and grinding to cool and lubricate cutting tools and workpieces. Cooling performance, lubricating performance, anti-rust performance, degreasing and cleaning function, anti-corrosion function, easy to dilute. It overcomes the shortcomings of traditional soap-based emulsions, which are easy to smell in summer, difficult to dilute in winter, and poor anti-rust effect, and has no adverse effect on lathe paint. It is suitable for cutting and grinding of ferrous metals and is currently the most advanced grinding product. The indicators of cutting fluid are better than saponified oil. It has good cooling, cleaning, anti-rust and other characteristics, and has the characteristics of non-toxic, odorless, non-erosion to human body, non...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F1/283C02F1/38C02F1/40C02F1/42C02F1/461C02F1/5236C02F1/56C02F1/72C02F1/722C02F1/78C02F3/34C02F9/00
Inventor 陈盛远王胜陈勇孙海峰贾飞
Owner CHAOHU NANTE PRECISION MFG