A device and method for recovering chromatographic-grade organic reagents from organic reagent waste liquid

Abstract

The invention discloses a device and a method for recovering a chromatographic grade organic reagent from an organic reagent waste liquid. The device comprises an organic reagent waste liquid salting-out tank, an organic reagent distillation kettle, an organic reagent pervaporation membrane separation device and a saturated salt solution distillation tank. The method comprises the following steps: the organic reagent waste liquid enters the organic reagent waste liquid salting-out tank; after the organic reagent waste liquid is added into the organic reagent waste liquid salting-out tank from the saturated salt solution distillation tank according to a certain proportion, carrying out sufficient stirring and standing; after stratification, a supernviaould like liquid returns to the saturated salt solution distillation tank for distillation; after the distillation, a saturated salt solution is obtained for repeated use; a supernatant organic solvent liquid is transferred to the organic reagent distillation kettle. Through the adoption of the device, a chromatographic grade organic reagent waste liquid can be collected; the chromatographic grade organic reagent, namely an effective constituent in the waste liquid, can be recovered by certain means, such as the coupling between salting-out and dewatering, the coupling between distillation and impurity removing, and the coupling between pervaporation and liquid-liquid separation; the recovered chromatographic grade organic reagent can reach the national standard.

Description

technical field [0001] The invention belongs to the field of environmental protection applications, in particular to a device and method for recovering organic reagents from organic reagent waste liquid. Background technique [0002] Chromatographic-grade organic reagents are often used in high-performance liquid chromatography. According to the principle of high-performance liquid chromatography, high-performance liquid phase waste liquid contains a large amount of chromatographic-grade organic reagents. With the national development strategy of rejuvenating the country through science and education, science and technology as the primary productive force and other national development strategies, colleges and universities and major scientific research institutions pay more and more attention to scientific research. In recent years, with the rapid development of scientific research, the method of using high performance liquid chromatography to analyze the content and composi...

AI Technical Summary

Problems solved by technology

This method is simple and rude, wastes a lot of resources, and releases a lot of carbon dioxide at the same time, aggravating the greenhouse effect

What's more, for convenience, such organic reagent waste liquid is directly discharged, causing pollution of water environment and soil environment, increasing the load of sewage treatment plants and tap water plants to treat organic reagent waste liquid

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