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A kind of reuse method of waste liquid after extracting sisal saponin from sisal

A technology of sisal saponin and waste liquid, applied in chemical instruments and methods, multi-stage water/sewage treatment, filtration treatment, etc., can solve the problems of high sugar content, large chroma pollution, difficult waste water, etc., and achieve improvement Oxygen content and PH value, reducing the content of acid and salt, improving the effect of PH value and chroma

Active Publication Date: 2020-08-25
温岭市旗亮鞋业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, during the extraction process of sisal saponin, a large amount of difficult-to-treat wastewater will be generated, which poses a serious threat to water resource protection.
Saponin production wastewater is organic wastewater with high acid concentration, and the following problems are common: high COD concentration, high sugar content, high salt content, high acidity, high chloride ion and sulfate ion content, and large chroma pollution, etc.
Although the discharged wastewater complies with the discharge standard of "Saponin Industrial Water Pollutant Discharge Standard" (GB20425-2006), the residual amount of bacterial colonies in the water body is large, and it is easy to destroy the balance of the microbial ecosystem of the water body after discharge, thereby affecting the living environment of animals and plants

Method used

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  • A kind of reuse method of waste liquid after extracting sisal saponin from sisal

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The recycling method of waste liquid after extracting sisal saponin from sisal, is characterized in that, comprises the following steps:

[0034] a. Measure the ion content of sulfate, oxalate and chloride ions in the waste liquid;

[0035] b. Add phosphate rock powder with a particle size of 200 meshes to the waste liquid, and the taste of the phosphate rock powder is 31%P 2 O 5 , the ratio of the added phosphate rock powder and the sulfate radical equivalent is 1:1, and stir evenly, wherein the phosphate rock powder and the sulfate radical react to generate calcium superphosphate crystals and calcium sulfate and release hydrogen fluoride gas, the hydrogen fluoride gas and phosphate rock powder Silica and silicate react to generate silicon tetrafluoride, the escape gas is collected and introduced into the water washing tower to obtain a fluorosilicic acid solution with a solute mass fraction of 25%, and the calcium sulfate reacts with oxalic acid in the waste liquid t...

Embodiment 2

[0040] The recycling method of waste liquid after extracting sisal saponin from sisal, is characterized in that, comprises the following steps:

[0041] a. Measure the ion content of sulfate, oxalate and chloride ions in the waste liquid;

[0042] b. Add phosphate rock powder with a particle size of 100 meshes to the waste liquid, and the taste of the phosphate rock powder is 33%P 2 O 5 , the ratio of the added phosphate rock powder and the sulfate radical equivalent is 1:3.5, and stir evenly, wherein the phosphate rock powder reacts with the sulfate radical to generate calcium superphosphate crystals and calcium sulfate and release hydrogen fluoride gas, the hydrogen fluoride gas and the phosphate rock powder. Silica and silicate react to generate silicon tetrafluoride, the escape gas is collected and introduced into a water washing tower to obtain a fluorosilicic acid solution with a solute mass fraction of 30%, and the calcium sulfate reacts with oxalic acid in the waste l...

Embodiment 3

[0047] The recycling method of waste liquid after extracting sisal saponin from sisal, is characterized in that, comprises the following steps:

[0048] a. Measure the ion content of sulfate, oxalate and chloride ions in the waste liquid;

[0049] b. Add phosphate rock powder with a particle size of 150 meshes to the waste liquid, and the taste of the phosphate rock powder is 35%P 2 O 5 , the ratio of the added phosphate rock powder and the sulfate radical equivalent is 1:2, and stir evenly, wherein the phosphate rock powder and the sulfate radical react to generate calcium superphosphate crystals and calcium sulfate and release hydrogen fluoride gas, the hydrogen fluoride gas and phosphate rock powder Silica and silicate react to generate silicon tetrafluoride, the escape gas is collected and introduced into the water washing tower to obtain a fluorosilicic acid solution with a solute mass fraction of 25%, and the calcium sulfate reacts with oxalic acid in the waste liquid t...

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Abstract

The invention discloses a reutilization method of waste liquid obtained by extracting tigogenin from sisal hemp, belonging to the technical field of saponin industrial wastewater treatment. According to the method disclosed by the invention, by a mode of combining chemical reaction with physical filtration, hazards substances are decomposed and filtered out, and the aim of recycling sediments, waste gases and waste liquid is achieved. Compared with a traditional neutralization method and a microbiological method for treating the waste liquid generated in the production process of the tigogenin, the reutilization method disclosed by the invention has the characteristics of simple process, low cost, change of wastes into valuables and no secondary pollution.

Description

technical field [0001] The invention belongs to the technical field of saponin industrial sewage treatment, in particular to a method for reusing waste liquid after extracting sisal saponin from sisal. Background technique [0002] Sisal saponin, English name: tigogenin, Chinese alias: sisal saponin, sisal saponin, also known as ticogining, etc., is the basic raw material for the synthesis of steroid hormone drugs, known as "medicine gold" and "medicine gold" The "Mother of Hormones". To extract sisal saponin from sisal, the sisal slag after defibration is squeezed into juice, the sisal juice is hydrolyzed with acid at a certain temperature and pressure, the hydrolyzate obtained after the hydrolysis is mixed with lime, and dried with ethanol. Reflux extraction, the extract is acidified and decolorized, concentrated and crystallized to obtain crude sisal saponin, and the crude product is recrystallized to obtain the product. Using the downstream product monoene produced fro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F101/10C02F101/12C02F101/34
CPCC02F1/00C02F1/001C02F1/283C02F1/42C02F1/78C02F9/00C02F2101/101C02F2101/12C02F2101/34
Inventor 卢易达
Owner 温岭市旗亮鞋业有限公司
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