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Waste water processing method in yam saponin production

A technology for wastewater treatment and acid solution, which is applied in the field of water treatment to achieve the effect of realizing large-scale industrial production, solving wastewater pollution and realizing zero discharge of wastewater

Inactive Publication Date: 2013-06-19
城固县振华生物科技有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, wastewater treatment in production has become a bottleneck restricting the production of diosgenin

Method used

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  • Waste water processing method in yam saponin production
  • Waste water processing method in yam saponin production
  • Waste water processing method in yam saponin production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Collect the hydrolysis acid and washing liquid in a reservoir, add lime 30kg / m 3 , PAC 400g / m 3 , polyacrylamide 3g / m 3 , neutralize and coagulate under stirring, and then stand still; collect the supernatant, add 40kg / m 3 Activated carbon is decolorized for 60-90 minutes, and then subjected to vacuum distillation, vacuum: 0.065-0.070MPa; temperature: 65°C-80°C. Neutral colorless water was obtained.

Embodiment 2

[0027] Collect the hydrolysis acid liquid and washing liquid in a reservoir, add lime 40kg / m 3 , PAC 500g / m 3 , polyacrylamide 4g / m 3 , neutralize and coagulate under stirring, and then stand still; collect the supernatant, add 50kg / m 3 Activated carbon is decolorized for 60-90min. Subsequent processing is carried out by the process step and condition of embodiment 1.

Embodiment 3

[0029] Collect the hydrolysis acid and washing liquid in a reservoir, add lime 50kg / m 3 , PAC 600g / m 3 , polyacrylamide 5g / m 3 , neutralize and coagulate under stirring, and then stand still; collect the supernatant, and add 60kg / m 3 Activated carbon is decolorized for 60-90min. Subsequent processing is carried out by the process step and condition of embodiment 1.

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Abstract

The invention discloses a waste water processing method in the yam saponin production, which is characterized by: merging hydrolysis acid liquor and cleaning solution in the production process of saponin, sequentially adding 30-50kg / m<3> of lime, 400-600g / m<3> of polymeric aluminium and 3-5g / m<3> of polyacrylamide for neutralization and coagulation; collecting liquid supernatant, adding 40-60 kg / m<3> of activated carbon in the clear liquid for decolorization processing, and then carrying out the reduced pressure distillation to obtain colorless neutral water. The waste water processing methodfundamentally solves the waste water pollution problem in the yam saponin production process, is simple, and has very good water processing effect; the processed waste water can be used as neutral water to be recycled and used in the production process; and the waste resource is effectively recycled, thus realizing the zero emission of the waste water in the production process.

Description

technical field [0001] The invention belongs to water treatment technology, and relates to a waste water treatment process, in particular to a treatment method for waste water in the production process of diosgenin. Background technique [0002] Turmeric belongs to the Dioscoreaceae plant and is the main raw material for processing adrenal cortex hormones and contraceptives. The market demand for saponin is very large. In 2008, the global demand for saponin was about 3,000 tons, and it is increasing at an annual rate of about 8% in recent years. [0003] At present, the production of saponin generally adopts the traditional process method, that is, the turmeric is processed into diosgenin after crushing, fermentation, acid hydrolysis, extraction and other processes. Although this method is relatively backward, it is a mature, stable technology with relatively low production costs. In the production process of this traditional method, the starch separation after acid hydrol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/10C02F1/04C02F1/52C02F1/28C02F1/66C02F103/26
Inventor 李建国葛红光刘金生赖普辉郭小华刘志峰赵蔡斌李旭午
Owner 城固县振华生物科技有限责任公司