Reutilization method of waste liquid obtained by extracting tigogenin from sisal hemp

A technology of sisal saponin and waste liquid, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve problems such as high sugar content, large chroma pollution, high salt content, etc. Achieve the effects of improving oxygen content and PH value, improving PH value and chroma, and reducing the content of acid and salt

Active Publication Date: 2017-08-08
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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  • Reutilization method of waste liquid obtained by extracting tigogenin from sisal hemp

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Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

[0035] b. adding particle size to the waste liquid is 200 mesh phosphate rock powder, and the taste of the phosphate rock powder is 31%P 2 o 5 , the ratio of added phosphate rock and sulfate radical equivalent is 1:1, stir evenly, wherein phosphate rock reacts with sulfate radical to generate superphosphate crystals and calcium sulfate and releases hydrogen fluoride gas, and the hydrogen fluoride gas and dihydrogen fluoride in phosphate rock Silicon oxide and silicate react to form silicon tetrafluoride, and the escaped gas is collected and introduced into a water washing tower to obtain a fluorosilicic acid solution with a solute mass fraction of 25%. The calcium sulphate reacts with oxalic acid in the waste liquid to form calcium oxalate pre...

Embodiment 2

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

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

[0042] b. adding particle size to the waste liquid is 100 mesh phosphate rock powder, the taste of the phosphate rock powder is 33%P 2 o 5， The ratio of added phosphate rock to sulfate radical equivalent is 1:3.5, stir evenly, wherein phosphor rock reacts with sulfate radicals to generate superphosphate crystals and calcium sulfate and release hydrogen fluoride gas, the hydrogen fluoride gas and the carbon dioxide in phosphate rock Silicon and silicate react to generate silicon tetrafluoride, collect the escaped gas and introduce it into the 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 liquid to form calcium oxalate precipitate and s...

Embodiment 3

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

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

[0049] b. adding particle size to the waste liquid is 150 mesh phosphate rock powder, the taste of which is 35%P 2 o 5 The ratio of added phosphate rock to sulfate radical equivalent is 1:2, stir evenly, wherein phosphor rock reacts with sulfate radical to generate superphosphate crystals and calcium sulfate and release hydrogen fluoride gas, the hydrogen fluoride gas and the carbon dioxide in phosphate rock Silicon and silicate react to generate silicon tetrafluoride, collect the escaped gas and introduce it 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 to form calcium oxalate precipitate and sulfuric acid , the sulf...

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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 sapogenin, sisal sapogenin, also known as tecoginine, etc., is the basic raw material for the synthesis of steroid hormone drugs, known as "medicine gold" and " Known as the mother of hormones. Sisal saponin is extracted from sisal by squeezing the sisal slag after defiberization, and the sisal juice is hydrolyzed with acid at a certain temperature and pressure, and the hydrolyzate obtained after hydrolysis is mixed with lime, dried with ethanol Reflux extraction, acidification and decolorization of the extract, concentration and crystallization to obtain crude sisal saponin, and recrystallization of the crude product to obtain the product. The downstream product monoene produced by si...

Claims

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Application Information

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Patent Type & Authority Applications(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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