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Plumbagin process wastewater treatment method

A technology of plumbagin and treatment method, which is applied in the field of environmental protection and medicine, can solve the problems of potassium cyanide wastewater with severe toxicity and inability to discharge, and achieve the effect of environmental protection treatment and rapid dissolution of wastewater

Inactive Publication Date: 2020-08-07
SHANGYU ZHONGXIAN BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art, the present invention provides that the present invention solves the problem that potassium cyanide wastewater is highly toxic and cannot be discharged, and uses hydrogen peroxide to convert potassium cyanide into potassium carbonate and potassium chloride, thereby realizing environmental protection treatment of wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A treatment method for plumbagin process wastewater, comprising the steps of:

[0024] Step 1, the waste water is filtered and treated, and the solid impurity particles in the waste water are removed;

[0025] Step 2, subjecting the waste water to a constant temperature distillation reaction, removing the solvent to obtain a precipitate;

[0026] Step 3, the precipitate is added to hydrogen peroxide to continue the reaction, and then the reaction is distilled under reduced pressure to obtain potassium carbonate crystals;

[0027] Step 4, dissolving potassium carbonate with dimethyl sulfoxide, then adding calcium chloride for precipitation, to obtain potassium chloride-dimethyl sulfoxide solution;

[0028] Step 5, distilling the potassium chloride-dimethyl sulfoxide solution to obtain dimethyl sulfoxide recovery liquid and potassium chloride.

[0029] The wastewater filtration treatment in the step 1 can quickly remove the selenium powder in the wastewater and recycle ...

Embodiment 2

[0037] A treatment method for plumbagin process wastewater, comprising the steps of:

[0038] Step 1, the waste water is filtered and treated, and the solid impurity particles in the waste water are removed;

[0039] Step 2, subjecting the waste water to a constant temperature distillation reaction, removing the solvent to obtain a precipitate;

[0040] Step 3, the precipitate is added to hydrogen peroxide to continue the reaction, and then the reaction is distilled under reduced pressure to obtain potassium carbonate crystals;

[0041] Step 4, dissolving potassium carbonate with dimethyl sulfoxide, then adding calcium chloride for precipitation, to obtain potassium chloride-dimethyl sulfoxide solution;

[0042] Step 5, distilling the potassium chloride-dimethyl sulfoxide solution to obtain dimethyl sulfoxide recovery liquid and potassium chloride.

[0043] The wastewater filtration treatment in the step 1 can quickly remove the selenium powder in the wastewater and recycle ...

Embodiment 3

[0051] A treatment method for plumbagin process wastewater, comprising the steps of:

[0052] Step 1, the waste water is filtered and treated, and the solid impurity particles in the waste water are removed;

[0053] Step 2, subjecting the waste water to a constant temperature distillation reaction, removing the solvent to obtain a precipitate;

[0054] Step 3, the precipitate is added to hydrogen peroxide to continue the reaction, and then the reaction is distilled under reduced pressure to obtain potassium carbonate crystals;

[0055] Step 4, dissolving potassium carbonate with dimethyl sulfoxide, then adding calcium chloride for precipitation, to obtain potassium chloride-dimethyl sulfoxide solution;

[0056] Step 5, distilling the potassium chloride-dimethyl sulfoxide solution to obtain dimethyl sulfoxide recovery liquid and potassium chloride.

[0057] The wastewater filtration treatment in the step 1 can quickly remove the selenium powder in the wastewater and recycle ...

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PUM

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Abstract

The invention belongs to the field of medicine, and relates to the field of environmental protection, in particular to a plumbagin process wastewater treatment method which comprises the following steps: step 1, filtering wastewater to remove solid impurity particles in the wastewater; 2, carrying out a constant temperature distillation reaction on the wastewater, and removing the solvent to obtain a precipitate; step 3, adding the precipitate into hydrogen peroxide for continuous reaction, and then performing reduced pressure distillation reaction to obtain potassium carbonate crystals; 4, dissolving potassium carbonate in dimethyl sulfoxide, and then adding calcium chloride for precipitation to obtain a potassium chloride-dimethyl sulfoxide solution; and step 5, distilling the potassiumchloride-dimethyl sulfoxide solution to obtain a dimethyl sulfoxide recovery solution and potassium chloride. The method solves the problem that the potassium cyanide wastewater is severe in toxicityand cannot be discharged, converts potassium cyanide into potassium carbonate and potassium chloride by utilizing hydrogen peroxide, and realizes environment-friendly treatment of the wastewater.

Description

technical field [0001] The invention belongs to the field of medicine and relates to the field of environmental protection, in particular to a treatment method for plumbagin process wastewater. Background technique [0002] Plumbagin (IV) is the root extract of the medicinal plant Plumbago sinensis. It is a natural naphthoquinone compound with various biological activities, including anti-oxidation, anti-atherosclerosis, anti-tumor, anti-bacteria and Fungi, etc., are widely used in the world, especially in Southeast Asia. [0003] The Chinese invention patent with the publication number CN109438306A discloses a preparation method of plumbagin derivatives containing diselenide; the method reacts in dimethyl sulfoxide, and simultaneously uses potassium cyanide as one of the raw materials. The wastewater after the reaction step contains a certain amount of potassium cyanide, which cannot be discharged directly, and the production wastewater is difficult to treat based on the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C07C315/06C07C317/04C02F101/18
CPCC02F1/001C02F1/04C02F1/722C02F9/00C02F2101/18C07C315/06C07C317/04
Inventor 李诗雅钱强王建明章良张浩
Owner SHANGYU ZHONGXIAN BIOTECH
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