Centrifugal extraction machine in 10-channel DMAC wastewater treatment technology was studied
Dimethyl ethyl phthalein amine (
Is a kind of chemical raw materials and organic solvents, the boiling point of 165.
More than 5 ℃, used as a solvent, catalyst, etc. , widely used in chemical, petroleum, medicine and other fields.
In practice in the process of production, can produce a large number of 10-channel DMAC wastewater and wastewater with strong chemical stability, biological toxicity, belongs to the high concentration of poisonous and harmful, difficult biochemical waste water, dirty and poisonous.
Therefore, in view of the 10-channel DMAC wastewater treatment can be used solvent extraction, pollutants removal effect is good, can achieve discharge standards.
days extraction for 10-channel DMAC wastewater processing experiment, the CWL50 -
M type experiment using centrifugal extraction machine, the selected extraction solvent, compared to adjust, as well as the raw material liquid PH adjustment, after pretreatment extraction experiments were conducted.
will first two phase solution according to certain proportion respectively from two feeding tube into the drum and the mixing zone, formed between the shell of the rotating drum with, through the turbine disc and the impeller to make two phase mixing and dispersing quickly, two phase solution fully mass transfer, mixing and mass transfer process.
After mixing of two phase fluid under the action of vortex disk into the rotary drum, in under the action of centrifugal force, completed two phase separation process.
load after extracting organic phase to reverse extraction, lye solution as extraction agent to reverse extraction of loaded organic phase, after the extraction of regeneration extractant can be repeatedly used for many times without affecting the extraction effect.
in the extraction experiments found that have great influence on the effect of temperature on the extraction.
Basic industrial production extraction is often conducted at room temperature, the temperature at 25 ℃ or so for the best.
Experiments show that the extraction effect as temperatures rise, there is slightly lower, but if the temperature difference is not too big, the extraction effect change much.
By the experiment,
10-channel DMAC wastewater by solvent extraction method, the effect significantly, can effective recovery of valuable material in the waste water, waste water after oil removal, extraction, COD removal rate as high as 967% above, reach discharge standards.
related extraction equipment figure:
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